Contamination protector and treated building board

FIELD: chemistry.

SUBSTANCE: contamination protector contains fine particles of nitrogen dioxide, aqueous solvent containing alcohol dispersing specified particles of nitrogen dioxide, surface-active substance and splash modifier chosen among alkali metal compound, alkaline-earth metal compound, phosphorus compound, clay mineral and mixtures thereof. Specified contamination protector enters into the composition of specified aqueous solvent. It can be applied onto building board coating.

EFFECT: contamination protector and its adhesion to building board coating are enhanced.

3 cl, 30 dwg, 3 tbl, 30 ex

 

The technical FIELD

The present invention relates to a tool for protection from contamination (dust control tool), which is used for surface treatment in order to give them resistance to pollution, for example, for processing cement wood boards, boards of calcium silicate, cement (concrete), metal plates or panels, plates or panels of glass, as well as building boards, which surface is treated with a means to protect from contamination.

The known technical solutions

The surface of the building boards, such as, for example, materials for exterior walls, usually cover covering structure. It was proposed to inflict on them the means to protect from contamination, which forms an anti-contamination film having the property of self-purification that allows you to remove accumulated on the surfaces of pollution.

As mudguard the funds of this type have used a tool that forms on the surface of treated coir film. After applying means to protect from contamination on the surface of the substrate therein is formed superhydrophilic mudguard film. When the surface of the substrate surface becomes soiled, applied to the surface of the substrate water absorbed superhydrophilic mudguard film, Raza is Tate which contamination of surface water and washed (i.e. is self-cleaning).

For the formation of superhydrophilic mudguard film on the surface of the substrate up to the present time mainly used dust control agent consisting of a water dispersion of fine particles of silicon dioxide (colloidal silica).

For example, in published patent application of Japan No. 6-71219 (JP 6-71219 A) disclosed a method of forming a film for protection from contamination, which includes applying a water dispersion of colloidal silica with an average particle diameter of not more than 100 nm on the floor, formed a water emulsion of a synthetic polymer, with the formation of a film of colloidal silicon dioxide on the surface.

In the published patent application of Japan No. 2002-338943 (JP 2002-338943 A) disclosed a method of forming a mud layer, comprising applying a liquid containing colloidal silica, and complex oxides of aluminium/aluminium-magnesium, to enhance surface properties and resistance to water and alkali.

The above-described fine particles of silicon dioxide attach to the treated surface of the substrate superhydrophilic properties thanks to the presence on the particles surface silanol groups.

The above-described fine particles of silicon dioxide contain a certain number of neighboring silanol group is, and present on the particles surface silanol groups are close to each other. Because neighboring silanol groups are linked by hydrogen bonds, the concentration of free silanol groups (i.e. single silanol groups), which contribute to the hydrophilic properties, not so great. Therefore, in order to get mudguard film having high hydrophilicity, it is necessary to increase the concentration of the fine particles of silicon dioxide in water dispersion.

However, increasing the concentration of particles of silicon dioxide is inconvenient for two reasons: first, it increases the cost of the obtained water dispersion, and secondly, the uneven application of this water dispersion leads to the formation of a whitish precipitate fine particles of silicon oxide, which gives a different color from the original color of the coating.

In addition, it is necessary that the above-described mudguard film had good adhesion to the coating formed covering the composition on the surface of the building Board.

In the case of low adhesion between the mudguard film and coated mudguard film exfoliates at an early stage, not providing a prolonged and sustained effect of protection from contamination.

In attempts to improve the adhesion between the mudguard PL is ncoi and coating have been proposed a method of oxidation coatings using flame or oxidizing means (e.g., published patent application of Japan No. 2002-336768) and the method of applying mudguard means after heating the surface up to 60°or more (for example, published patent application of Japan No. 2002-330769).

However, if the coating on the surface of the building Board, which must have a molded surface and fine texture, process, flame or oxidizing agent, the coating may deteriorate: to discolour or lose its Shine, which will reduce the commercial value of the building panel, and the formation of delaminations, cracks or perforations may reduce performance of the panel.

In addition, heating the surface up to 60°or worse from the point of view of temperature control, may be the cause of uneven processing and does not contribute to energy savings.

The INVENTION

In such circumstances, the present invention solves the problem of creating a dust control agent that provides excellent dust control properties and good adhesion between the mudguard film and coating, even if the concentration of the fine particles of silicon oxide does not increase, and the construction plate, obtained by the use of such tools.

The present invention provides, as a way of addressing the KJV is anotai above General objectives, dust control tool, which after application to the substrate for the construction of the plate forms superhydrophilic mudguard film and contains fine particles of silicon dioxide, an aqueous solvent and an additional tool to improve dust control properties selected from the group consisting of compounds of alkali metals, compounds of alkaline earth metals, compounds of phosphorus, silica, clay minerals, and mixtures thereof.

The present invention also provides a construction plate, obtained by applying a covering composition on the surface of the substrate with the formation of the coating and application of the coating described above mudguard means or while the coating is in an uncured condition, or after the coating was subjected to processing in order to give him roughness.

Effect due to dust control coating according to the present invention can be improved dust control action without increasing the concentration of fine particles of silicon dioxide.

Additionally it provides persistent coir processing without destroying the surface of the substrate construction boards.

BRIEF DESCRIPTION of DRAWINGS

Figure 1 is a photograph of a building plate, used pax the drawing, in order to show the results of tests on dust control action obtained in example (Sample 1) according to method 1 of the present invention. In this picture, a label And a photo of the plate after the application of dust control tools and to test and label In the labeled photo of the plate, which after the application of dust control means cause the contaminated liquid, followed by immersion in warm water, a label marked With the picture of the plate in the process of spraying water on the contaminated areas of the plate, and a label marked D photo of the plate after spraying water.

Figure 2-8 are pictures of the construction of the plates used instead of drawings to show the test results on the mudguard action examples (Examples 2-8) Way to implement 1 according to the present invention. On each of these pictures tag And indicates a picture of the plate on which after the application of dust control means cause the contaminated liquid, followed by immersion in warm water, label denotes a picture of the plate in the process of spraying water on the contaminated areas of the plate, and the mark indicates the photo plate after spraying water.

Figure 9 is a photograph of a building Board is used instead of a drawing, to show the test results gratisami the Noah effect of the comparative example (Sample 9) in the Method of implementation 1 according to the present invention. In this photo tagged And labeled photo of the plate, which after the application of dust control means cause the contaminated liquid, followed by immersion in warm water mark refers to the picture of the plate in the process of spraying water on the contaminated areas of the plate, and the mark indicates the photo plate after spraying water.

Figure 10-15 are pictures of the construction of the plates used instead of drawings to show the results of the test mudguard actions examples (Samples 1-6) implementation Method 2 according to the present invention. On each of these pictures tag And indicates the photo plate, which after the application of dust control means cause the contaminated liquid, followed by immersion in warm water mark refers to the picture of the plate in the process of spraying water on the contaminated areas of the plate, and the mark indicates the photo plate after spraying water.

Fig-20 are pictures of building slabs, used as a drawing, to show the results of the test mudguard action examples for comparison (Samples 7-11) implementation Method 2 according to the present invention. On each of these pictures tag And indicates the photo plate, which after the application of dust control means causing polluted the second liquid, followed by immersion in warm water, mark denotes a picture of the plate in the process of spraying water on the contaminated areas of the plate, and the mark indicates the photo plate after spraying water.

Fig-26 are pictures of the construction of the plates used instead of drawings in order to show the results of the test mudguard actions examples (Samples 1-6) implementation Method 3 according to the present invention. On each of these pictures tag And indicates the photo plate, which after the application of dust control means cause the contaminated liquid, followed by immersion in warm water mark refers to the picture of the plate in the process of spraying water on the contaminated areas of the plate, and the mark indicates the photo plate after spraying water.

Fig-30 are pictures of the construction of the plates used instead of drawings to show the results of the test mudguard action examples for comparison (Samples 7-11) implementation Method 3 according to the present invention. On each of these pictures tag And indicates the photo plate, which after the application of dust control means cause the contaminated liquid, followed by immersion in warm water mark refers to the picture of the plate in the process of spraying water on the contaminated areas of the plate, and stamp With means of pictures is their plates after spraying water.

DETAILED description of the INVENTION

Below is given a detailed explanation of the present invention.

First of all explained to each of the source material to obtain a dust control tools.

[Fine particles of silicon dioxide]

First, it is desirable to use fine particles of amorphous silicon dioxide. Examples of finely dispersed amorphous silica include colloidal silicon dioxide, silica gel, silicasol and white carbon (pyrogenic silica). In particular, it is preferable to use colloidal silica and white soot.

Initially, the particle size of the colloidal silica is in the range from several nanometers to several tens nanometers. However, by dispersing it in an aqueous solvent, the colloidal particles can be aggregated with the formation of secondary particles with a diameter of from several hundred to several tens of nanometers.

Fumed silica can be prepared by combustion and hydrolysis of volatile compounds of silicon, such as silicon tetrachloride in the gas phase, for example, in an oxygen-hydrogen flame.

Initially, the particle size of the fumed silica is in the range from 7 to 40 nm. However, by dispersing it in an aqueous solvent, the particles can be associated with the formation of the mesh, giving the I secondary particles with a diameter of several hundred nanometers (500 nm).

Fumed silica has a specific surface area ranging from about 500,000 to 2000000 cm2/g and contains from 2 to 3 single silanol groups at 1 nm2. Therefore, the pyrogenic silica has a high surface activity and gives high superhydrophilicity the substrate surface.

[Aqueous solvent]

As the aqueous solvent in the present invention mainly use water without additives. However, it is preferable to use, in addition to water, any water-soluble organic solvent, such as water-soluble alcohol, in order to ensure quick drying after application.

Examples of alcohols used in the present invention include methanol, ethanol and isopropanol.

[Tool that improves dust control properties]

Tool that improves mud properties, which add to strengthen or improve mud properties mud means according to the present invention consists of compounds of alkali metal and/or compounds of alkali-earth metal and/or phosphorus compounds and/or a clay mineral.

[Compound of an alkali metal]

Examples of compounds of alkali metals used in the present invention include oxides or hydroxides of alkali metals such as lithium, sodium and potassium, salts are those of alkali metals with inorganic acids such as hydrochloric acid, sulfuric acid, carbonic acid, phosphoric acid, nitric acid or silicic acid, and salts of these alkali metals with organic acids, including acetic acid, formic acid or oxalic acid.

[Connection alkaline earth metal]

Examples of compounds of alkaline earth metals, used in the present invention include oxides or hydroxides of alkaline earth metals such as calcium and magnesium, salts of these alkaline earth metals with inorganic acids such as hydrochloric acid, sulfuric acid, carbonic acid, phosphoric acid, nitric acid or silicic acid, salts of these alkaline earth metals with organic acids such as acetic acid, formic acid or oxalic acid, and inorganic materials, which contain alkaline earth metals, such as FLUOROSILICATES, Dalit and Portland cement.

[Connection phosphorus]

Examples of phosphorus compounds used in this invention include ammonium salts or metal salts of phosphoric acid, Apatity and hydroxyapatite.

[Clay mineral]

Examples of the clay minerals used in the present invention include kaolinite, halloysite, montmorillonite illite, vermiculite, chlorite and bentonite.

[Dispersing agent]

To mudguard tool according to the present invention, it is desirable to add a dispersing agent.

As dispersing substances you can use any of the conventional anionic, nonionic and cationogenic surfactants.

Examples of surfactants include anionic surfactants such as sulfates of higher alcohols (sodium salt or amine), alkylarylsulfonate - sulfonates of aliphatic alcohols (sodium salt or amine), alkylnaphthalene (sodium salt or amine), condensates alkylnaphthalenes of sulfonates, alkylphosphate, diallylmalonate, rosin Soaps and salts of fatty acids (sodium salt or amine); nonionic surfactants, such as alkalemia esters of polyoxyethylene, alkylphenol esters of polyoxyethylene, complex alkalemia esters of polyoxyethylene, alkalemia polyoxyethylene amines, alkylolamides polyoxyethylene amines, alkalemia amides of polyoxyethylene, alkalemia esters sorbitan and alkalemia esters sorbitan of polyoxyethylene; and cationogenic surfactants, such as amylacetate of octadecyl, acetates, imidazoline derivatives, polyalkylene privodnye polyamine or their salts, octadecylsilyl chloride ammonium halides trimethylaminoethyl amides, sulfates alkylpyridine and halides alkyltrimethyl ammonium.

You can use a mixture of two or more surfactants. The examples do not limit the present invention.

Surfactant lowers the surface tension of the mudguard means according to the present invention, facilitates the dispersion of the fine particles of silicon dioxide and increases the affinity with the underlying floor.

[The third component]

Dust control tool according to the present invention may contain components other than the above components, such as organosilicon compounds, for example, polyorganosiloxanes or organopolysiloxane, or inorganic fillers such as aluminum hydroxide, titanium oxide, iron oxide, zinc oxide, aluminum oxide, silicon oxide, silica, diatomite, clay, mica, glass fiber, carbon fiber, white carbon, carbon black, iron powder, aluminum powder, stone dust, or zirconium.

[Song]

Dust control tool according to the present invention usually contains from 0.1 to 10% by weight, preferably from 0.5% to 6% by weight, the fine particles of silicon dioxide, not more than 10% by weight of alcohol (if it is added), usually from 0.1 to 2.0% by mass means improving gryazezaschity the properties, from 0.05 to 1.0% by weight surfactant, and is usually from 0.1 to 2.0% by weight of the third component.

If alcohol is contained in an amount exceeding 10% by weight, the fluidity of the obtained solvent is high enough to adversely affect the procedure of coating.

If a surfactant is contained in an amount of less than 0.05 mass%, the effect of its introduction, which is to reduce the surface tension and the dispersion of highly dispersed silicon dioxide, a minor, and if the content of the surface of the substance exceeds 1.0%, it has a negative influence on the strength, moisture resistance, durability and other properties of the mud layer.

Therefore, it is desirable that the surface tension of the mudguard means according to the invention was less than 20 Dyne/cm at 25°C.

[Base building plate]

As the basis of the construction of the plate, which will cause blanking tool according to the present invention using cement wood slabs, slabs of concrete, reinforced fibers, plates of fiber-reinforced concrete, slabs of concrete, manufactured by molding by extrusion, or fiber-reinforced concrete siding, which is manufactured by molding and subsequent curing of the mixture consisting of the commonly of the reinforcing wood material, such as wood flakes, bundles of wood fibers, wood pulp, wood wool (fine wood chips, wood flour, and the material on the basis of hydraulic concrete. The substrate may have a concave-convex pattern formed by embossing or similar method.

Suitable for use in the present invention the substrate include, in addition to the above-described substrates, for example, concrete (cement) plates, metal plates, glass plates, or plates.

[Cover]

The coating applied to the surface of the substrate.

Covering composition used for coating typically includes a solvent or emulsion composition comprising an acrylic resin, acryl-silicone resin, acryl-urethane resin or acrylic-silicone resin as a diluent.

Usually applied three-layer coating consisting of a bottom coating, intermediate coating and the outer coating, or a two-layer coating consisting of a lower cover and an outer cover.

[Uncured state]

"The floor in an uncured state" when used solvent or emulsion covering composition, means not the state in which the water or solvent is not evaporated, and on the surface of the substrate is formed if the thin film not in the state, or, for the case when the composition is used without solvent, coating an uncured state" means the state in which the media, which is a resin or inorganic carrier, not overide, i.e. is in an uncured state.

Not the condition is usually achieved immediately after or within a few tens of seconds after the formation of the coating by coating, preferably immediately after, or within 10 seconds after the formation of the coating.

When using a solvent or emulsion opaque composition, the concentration of solids increases during this period from 30-50% by weight to about 60-80% by weight.

In the coating, which is in an uncured state, the fine particles of silicon dioxide contained in the mudguard tool, slightly penetrate into the coating, which increases the adhesion force formed mudguard film to the cover and mudguard film firmly bonded to the floor without causing mixing mudguard films and coatings.

Therefore, mudguard film does not adversely affect the coating.

[Processing for roughening]

The processing method for roughening, which should be used in the present invention preferably represents such processing, to ora does not destroy the coating. Such methods include the surface treatment jet fractions and treatment by corona discharge.

Of these methods, it is recommended that the corona discharge, because it provides a very melkosherohovatuyu surface, almost destroys the floor and does not change the appearance of the coating.

The treatment for roughening can be carried out either after curing of the coating or after coating, in the case when a thin film is applied in an uncured state on the surface of the substrate. In the case when the processing for roughening is performed while the coating is in an uncured condition, used less discharge than during the processing of the coating after its hardening.

Treatment for roughening increases the specific surface area of the coating and increases the adhesion between the coating and mudguard film, which is formed on this coating, due to the "anchor effect".

From a security perspective, it is preferable to conduct the treatment by corona discharge are not in the same room where the applied coating, and in another, especially if it is used covering composition containing a solvent.

[Superhydrophilic mudguard tape]

Preferred methods of applying dust control tools include coating spray.

Coating raspy is the group includes, for example, coating by spraying at low pressure in the absence of air, coating spray gun Bella, electrostatic coating.

Other methods of coating include methods of coating by brush, roller and scraper.

In the coating spray dust control tool is ground to a state of air-dust sediment, which adhesives to the surface of the substrate with a convexo-concave structure, on which the tool is easily fixed.

In addition, construction boards usually put a coat of sealant, dried by a drying apparatus, applying an intermediate coating, the application of the exterior coating, drying in a drying apparatus, applying a clear coating and dried by using a drying apparatus. Therefore, the heat of the drying apparatus is accumulated, whereby the plate can be stored at about 50°without having warming up.

Due to the fact that dust control tool according to the present invention contains, in addition to the fine particles of silicon dioxide, which give the surface of the substrate property superhydrophilicity, the connection of the alkali metal and/or a compound of alkaline earth metal and/or a compound of phosphorus and/or clay mineral as the e substances, improves dust control properties, improves superhydrophilicity fine particles of silicon dioxide, increases the strength of the mudguard of the film, as well as enhanced fixation and adhesion of the fine particles of silicon dioxide to the floor.

DESCRIPTION of the PREFERRED IMPLEMENTATION EXAMPLES

Method of implementation No. 1

Below is the method of implementation 1 shows examples (Examples No. 1 to No. 8)and Comparative example (Sample No. 9).

The components shown in Table 1, were placed in water with obtaining mudguard tools.

For dispersion of colloidal silica used ball mill, followed by dispersion by means of ultrasound for 40 minutes.

In addition, you can use any available for purchase dispersion of colloidal silicon dioxide (e.g., SNOWTEX (trade name) manufactured by Nissan Chemical Industries, Ltd.) without any processing.

On the surface of the reinforced wood fiber plates from calcium silicate (construction Board) size 50×40 mm was applied an aqueous styrene-acrylic opaque composition. After curing of the coating at the coating was applied dust control agent having the composition shown in Table 1, in the amount equal to 5 g/square shaku (approximately 5 g/sq. ft.), and dried plate ol the normal temperature. In further plate used in the test.

"The example for comparison" refers to a sample that does not contain substances that improve dust control properties.

Construction plate, treated with dust control tool, left to stand for one day after treatment, dust control composition was immersed for 10 days in warm water at a temperature of 60°and examined for dust control actions before and after immersion in warm water.

Mudguard effects were assessed by applying a contaminated liquid, which was prepared by dispersing 1% by weight of black soot in the engine oil, the treated coir means the surface of the building Board. In order to simulate the contamination of the plate, the contaminated liquid was applied with a brush to ink, and then on contaminated sites sprayed water to wash away the dirt.

To assess the mud properties were applied the following criteria:

: pollution virtually no

: pollution remain partially

x: contamination remain.

The test results are shown in Table 1. Pictures illustrating the test results, shown in figure 1-9.

Example 1

The test result for Sample 1, representing this example, to the which as substances, improves dust control properties, was added 1% by weight of metasilicate lithium, after immersion in warm water was as shown in Table 1 and figure 1, "dirt almost no", indicating an improvement mudguard properties.

Example 2

The test result for Sample 2, representing this example, in which as substances that improve mudguard properties, was added 1% by weight of magnesium silicate, after immersion in warm water was as shown in Table 1 and figure 2, "dirt almost no", indicating an improvement mudguard properties.

Example 3

The test result for Sample 3, which this example, in which as substances that improve mudguard properties, was added 1% by weight of magnesium oxide, after immersion in warm water was as shown in Table 1 and figure 3, "dirt almost no", indicating an improvement mudguard properties.

Example 4

The test result for Sample 4, which this example, in which as substances that improve mudguard properties, was added 1% by weight of hydroxyapatite, after immersion in warm water was as shown in Table 1 and figure 4, "dirt almost no", indicating an improvement mudguard properties

Example 5

The test result for Sample 5, representing this example, to the which as substances, improves dust control properties, was added 1% by weight of smectite, after immersion in warm water was as shown in Table 1 and figure 5, "dirt almost no", indicating an improvement mudguard properties.

Example 6

The test result for Sample 6, representing this example, in which as substances that improve mudguard properties, was added 1% by weight of calcium silicate and the amount of colloidal silicon dioxide was 3% by weight after immersion in warm water was "pollution partially remain, indicating some improvement mudguard properties.

Example 7

The test result for Sample 7, which this example, in which as substances that improve mudguard properties, was added 1% by weight of calcium silicate and the amount of colloidal silicon dioxide was 6% by weight after immersion in warm water was "dirt almost no", indicating an improvement mudguard properties.

Example 8

The test result for Sample 8, representing this example, in which as substances that improve mudguard properties, was added 1% by weight of calcium silicate and the amount of colloidal silicon dioxide was 9% by weight after immersion in warm water was "dirt almost no", which indicates the improvement of the GRE is tamineh properties.

Comparative Example 1

The test result for Sample 9, representing the example for comparison, which did not add a substance that improves mud properties after immersion in warm water was "pollution remain", which indicates that the mudguard properties of this sample are worse than those of the Samples No. 1 to No. 8 of the examples, which added a substance that improves the mud.

In addition, all samples showed a good mud properties before immersing in warm water. Therefore, the pictures that replaces the drawings and showing the test results mudguard properties, have been omitted.

The implementation method 2

Below is the implementation method 2 shows examples (Examples No. 1 to No. 6), as well as examples for comparison (Samples No. 7 to No. 11).

The components shown in Table 2, were placed in water, receiving mudguard tool.

For dispersion of colloidal silica used ball mill, followed by dispersion by means of ultrasound for 40 minutes.

In addition, instead of preparing a dispersion of colloidal silica as described above can be used available for purchase dispersion of colloidal silicon dioxide (e.g., SNOWTEX (trade name), manufactured by Nissan Chemical Industries, Ltd.).

On the surface of the reinforced wood ox is CNAME plates from calcium silicate (construction Board) size 50× 40 mm was applied an aqueous styrene-acrylic opaque composition. While formed in this way, the floor was in an uncured (not) state that the coating was applied dust control agent having the composition shown in Table 2, in the amount equal to 5 g/square shaku (approximately 5 g/sq ft). The Board with the coating was dried by using a drying apparatus, and then used in the test.

"The example for comparison (Sample No. 7) denotes a sample that does not contain substances that improve dust control properties.

Dust control agent on the coating after it is completely dry (in the examples for comparison, samples No. 8 No. 10), was applied in the same way or through 100 seconds after application covering the composition (for example, comparative sample No. 11). The resulting plate with the coating was dried at normal temperature for further use in the test.

Construction plate, treated with dust control tool left to stand for one day after treatment, dust control composition was immersed for 10 days in warm water at a temperature of 60°and examined for dust control actions before and after immersion in warm water.

Mudguard effects were assessed by applying a contaminated liquid, which was prepared by dispersing 1% by weight of black soot in mA what innom oil, the treated coir means the surface of the building Board. In order to simulate the contamination of the plate, the contaminated liquid was applied with a brush to ink, and then on contaminated sites sprayed water to wash away the dirt.

To assess the mud properties were applied the following criteria:

: pollution virtually no

: pollution remain partially

x: contamination remain.

The test results shown in Table 2. Pictures of the test results shown in figure 10-20.

Example 1

The test result for Sample 1, representing this example, which caused mud medium containing 3% by weight of colloidal silicon dioxide, while the floor was not able, after immersion in warm water was "dirt almost no", indicating an improvement mudguard properties of the plate.

Example 2

The test result for Sample 2, representing this example, which was applied dust control product containing 6% by weight of colloidal silicon dioxide, while the floor was not able, after immersion in warm water was "dirt almost no", indicating an improvement mudguard t is in the plate.

Example 3

The test result for Sample 3, which this example, which was applied dust control tool, containing 9% by weight of colloidal silicon dioxide, while the floor was not able, after immersion in warm water was "dirt almost no", indicating an improvement mudguard properties of the plate.

Example 4

The test result for Sample 4, which this example, which caused mud medium containing 3% by weight of colloidal silicon dioxide and 5% by weight of isopropyl alcohol, until the floor was not able, after immersion in warm water was "dirt almost no", indicating an improvement mudguard properties of the plate.

Example 5

The test result for Sample 5, representing this example, which was applied dust control product containing 6% by weight of colloidal silicon dioxide and 5% by weight of isopropyl alcohol, until the floor was not able, after immersion in warm water was "dirt almost no", indicating an improvement mudguard properties of the plate.

Example 6

The test result for Sample 6, representing this example, which was applied dust control tool, containing 9% by weight of colloidal silicon dioxide and 5% by weight of isopropy the new alcohol, while the floor was not able, after immersion in warm water was "dirt almost no", indicating an improvement mudguard properties of the plate.

The example for comparison 1

The test result for Sample 7, which in this example for comparison, which was not covered with dust control agent was "pollution remain" even before immersing in warm water, which indicates low mudguard properties.

Comparative Example 2

The test result for Sample 8, representing this as an example for comparison, which, after complete curing, the coating was applied dust control agent containing 3% by weight of colloidal silicon dioxide, after immersion in warm water was "pollution remain", which indicates low mudguard properties.

Comparative Example 3

The test result for Sample 9, representing this as an example for comparison, which, after complete curing, the coating was applied dust control product containing 6% by weight of colloidal silicon dioxide, after immersion in warm water was "pollution remain", which indicates low mudguard properties.

Comparative Example 4

The test result for Sample 10, which represents this as an example for comparison, which, after complete curing, the coating was applied mudguard cf is the rotary, containing 9% by weight of colloidal silicon dioxide, after immersion in warm water was "pollution partially remain", which indicates a rather low mudguard properties.

Comparative Example 5

The test result for Sample 11, representing this as an example for comparison, which was applied dust control product containing 6% by weight of colloidal silicon dioxide, while the floor was in a semi-dry state, after immersion in warm water was "pollution partially remain", which indicates a rather low mudguard properties.

In addition, the test mudguard properties for sample 7 of example for comparison is not carried out, because mudguard properties of this sample were low and immersion in warm water.

In addition, all samples, except for sample 7, before immersing in warm water showed good mud properties. Therefore, the pictures that replace the drawings and demonstrate the results of the test on mud properties, omitted.

Method of implementation 3

Below is the method of implementation 3 shows examples (Samples No. 1 to No. 6), as well as examples for comparison (Samples No. 7 to No. 10).

The components shown in Table 3, were placed in water, receiving mudguard tool.

For dispersion of colloidal silica used ball mills is, followed by dispersion by means of ultrasound for 40 minutes.

In the present invention, instead of preparing a dispersion of colloidal silica as described above, can be used available for purchase dispersion of colloidal silicon dioxide (e.g., SNOWTEX (trade name), manufactured by Nissan Chemical Industries, Ltd.).

On the surface of the reinforced wood fiber plates from calcium silicate (construction Board) size h mm was applied an aqueous styrene-acrylic opaque composition. Once formed in this way, the coating was hardened, carried out the treatment by corona discharge. Thereafter, the coating was applied dust control agent having the composition shown in Table 1, in the amount equal to 5 g/square shaku (approximately 5 g/sq ft). The resulting plate was dried at normal temperature, and then used in the test.

On the surface of the reinforced wood fiber plates from calcium silicate (construction Board) size 50×40 mm was applied an aqueous styrene-acrylic opaque composition. While the thus formed coating was in an uncured (not) state that the coating was applied dust control agent having the composition shown in Table 3, in the amount equal to 5 g/square shaku (approximately 5 g/sq ft). Received the th resulting plate was dried by a drying apparatus for use in the test.

"A comparative Example (Sample No. 7) denotes the sample that do not cause dust control tool.

In each of Comparative examples for comparison (Sample No. 8 No. 10), dust control tool was applied in a similar way after complete curing (drying) of the coating without corona treatment, and the resulting plate with the coating was dried at normal temperature for further use in the test.

Dust control tool was applied on the thus formed coating or after the drying (in the examples for comparison, samples No. 8 No. 10), or after 100 seconds after application covering the composition (for example, comparative Sample No. 11), and the resulting plate with the coating was dried at normal temperature for use in the test.

In these examples was visually observed changes in the plate surface after corona treatment.

Construction plate, treated with dust control tool left to stand for one day after treatment, dust control composition was immersed in warm water at a temperature of 60°for 10 days and examined for dust control actions before and after immersion in warm water.

Mudguard effects were assessed by applying a contaminated liquid, which was prepared by the Vara is responses 1% by weight of black soot in the engine oil, the treated coir means the surface of the building Board. In order to simulate the contamination of the plate, the contaminated liquid was applied with a brush to ink, and then on contaminated sites sprayed water to wash away the dirt.

To assess the mud properties were applied the following criteria:

: pollution virtually no

: pollution remain partially

x: contamination remain.

The test results shown in Table 3, and the pictures presented on Fig-30.

Example 1

The test result for Sample 1, representing this example, in which after the treatment by corona discharge was applied dust control agent containing 3% by weight of colloidal silicon dioxide, after immersion in warm water was "dirt almost no", indicating an improvement mudguard properties of the plate.

It is recognized that the appearance of the plate is almost unchanged even after corona treatment.

Example 2

The test result for Sample 2, representing this example, in which after the treatment by corona discharge was applied dust control product containing 6% by weight of colloidal silicon dioxide, after immersion in warm water was "dirt out of the remains", indicating an improvement mudguard properties of the plate.

It is recognized that the appearance of the surface plate virtually unchanged even after corona treatment.

Example 3

The test result for Sample 3, which this example, in which after the treatment by corona discharge was applied dust control tool, containing 9% by weight of colloidal silicon dioxide, after immersion in warm water was "dirt almost no", indicating an improvement mudguard properties of the plate.

It is recognized that the appearance of the surface plate virtually unchanged even after corona treatment.

Example 4

The test result for Sample 4, which this example, in which after the treatment by corona discharge was applied dust control agent containing 3% by weight of colloidal silicon dioxide and 5% by weight of isopropyl alcohol, after immersion in warm water was "dirt almost no", indicating an improvement mudguard properties of the plate.

It is recognized that the appearance of the surface plate virtually unchanged even after corona treatment.

Example 5

The test result for Sample 5, representing this example, in which after the treatment by corona discharge was applied dust control product containing 6% by weight of colloidal silicon dioxide and % by weight of isopropyl alcohol, after immersion in warm water was "dirt almost no", indicating an improvement mudguard properties of the plate.

It is recognized that the appearance of the surface plate virtually unchanged even after corona treatment.

Example 6

The test result for Sample 6, representing this example, in which after the treatment by corona discharge was applied dust control tool, containing 9% by weight of colloidal silicon dioxide and 5% by weight of isopropyl alcohol, after immersion in warm water was "dirt almost no", indicating an improvement mudguard properties of the plate.

It is recognized that the appearance of the surface plate virtually unchanged even after corona treatment.

Comparative Example 1

The test result for Sample 7, which in this example for comparison, which do not cause dust control tool, was "pollution remain" even before immersing in warm water, which indicates low mudguard properties.

Comparative Example 2

The test result for Sample 8, representing this as an example for comparison, which caused mud medium containing 3% by weight of colloidal silicon dioxide without corona treatment, after immersion in warm water was "pollution remain", which indicates low gratisami the main properties.

Comparative Example 3

The test result for Sample 9, representing this as an example for comparison, which was applied dust control product containing 6% by weight of colloidal silicon dioxide without corona treatment, after immersion in warm water was "pollution remain", which indicates low mudguard properties.

Comparative Example 4

The test result for Sample 10, which represents this as an example for comparison, which was applied dust control tool, containing 9% by weight of colloidal silicon dioxide without corona treatment, after immersion in warm water was "pollution partially remain", which indicates that several low mudguard properties.

In addition, the test mudguard properties for sample 7 of example for comparison is not carried out, because mudguard properties of this sample were low and immersion in warm water.

1. Means for protection from contamination, which contains fine particles of silicon dioxide, an aqueous solvent containing alcohol to the dispersion of these particles are silicon dioxide, surface-active substance and a substance that improves dust control properties selected from the group comprising a compound of an alkali metal, a compound of alkaline earth metal, a compound of phosphorus, clay miner and mixtures thereof, but such a substance that improves mud properties, is part of the specified water solvent.

2. Construction plate treated with the means to protect from contamination, but such means of protection from dirt contains fine particles of silicon dioxide, an aqueous solvent containing alcohol to the dispersion of these particles are of silicon dioxide, a substance that improves dust control properties selected from the group comprising a compound of an alkali metal, a compound of alkaline earth metal, a compound of phosphorus, a mineral clay, and mixtures thereof, with the specified substance is included in the specified aqueous solvent, surfactant, with specified construction the plate is coated, and the tool for protection against pollution caused by the said coating in an uncured state.

3. Construction plate treated with the means to protect from contamination, but such means of protection from dirt contains fine particles of silicon dioxide, an aqueous solvent containing alcohol to the dispersion of these particles are of silicon dioxide, a substance that improves dust control properties selected from the group comprising a compound of an alkali metal, alkaline earth connection meta is La, connection phosphorus, mineral clay and mixtures thereof, with the specified substance is included in the specified aqueous solvent, surfactant, with specified construction the plate is coated, and the tool for protection from contamination deposited on the said coating, pre-treated to give it the rough edges.



 

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FIELD: construction.

SUBSTANCE: invention is related to protective devices used in highly explosive and radioactive objects: easy-drop roofs, anti-explosion gates, valves of excessive pressure relief, etc. Anti-explosion panel includes metallic armoured frame with metallic armoured paneling and lead-filler, which has four immovable support nozzles in the ends, where four support rods are telescopically inserted and sealed outside in object covering.

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FIELD: construction.

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8 cl, 1 tbl, 4 ex

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FIELD: chemistry.

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20 cl, 11 ex, 1 tbl

FIELD: chemistry.

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12 cl, 9 tbl, 1 dwg, 7 ex

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12 cl, 9 tbl, 1 dwg, 7 ex

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25 cl, 18 dwg, 11 tbl, 9 ex

FIELD: chemistry.

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EFFECT: enhanced corrosion resistance of coating.

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FIELD: construction industry.

SUBSTANCE: filler contains the following, wt %: liquid glass 18-20, ground chalk 30-40, butadiene-styrene latex 8-12, water 14-16, ground crushed glass 18-24.

EFFECT: improving bond strength of filler with concrete surface.

1 tbl

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