Wear-proof coating

FIELD: chemistry.

SUBSTANCE: coating is a matrix material into which a mixture of high-strength particles having an irregular shape and spherical solid particles essentially without cutting edges are added. The high-strength particles have Mohs hardness of at least 6, and the solid particles have Mohs hardness of at least 3, where the average diametre of the solid particles is equal to or less than the average diametre of the high-strength particles. The matrix material is a synthetic resin based on melamine, acrylate, epoxide, polyurethane, polyamide, polyester, polyimide, caoutchouc, rubber or mixtures thereof. Said wear-proof coating can be used to make wear-resistant surfaces on wooden materials, decorative paper or wood-fibre boards having a decorative print, in making parquet floors, laminated floors, furniture surfaces and working surfaces, as well as for making wear-resistant surfaces of layers on substrates made from metal, glass, ceramic, plastic, concrete or other materials.

EFFECT: high wear resistance of the wear-proof coating without increasing wearing of the press plate or belt press.

16 cl, 2 dwg, 6 tbl

 

DESCRIPTION

The present invention relates to a coating that protects it from wear and tear with a matrix material with a mixture of spheroidal particles of irregular shape and essentially not having cutting edges round solid particles, according to the restrictive part of paragraph 1 of the claims, as well as to its use to obtain a wear-resistant surfaces on wood material, decorative paper or wood-fiber plates with decorative printing for the manufacture of parquet flooring, laminate flooring, surfaces, furniture or working surfaces, and also for manufacturing wear-resistant surface layers on substrates made of metal, glass, ceramics, plastics, concrete, or other materials, for the glaze for coating tiles and to obtain an enamel for metal tanks or reactors for the chemical industry, as well as for home appliances and devices.

It is well known varnishing the surface of furniture, flooring, ceramics or even commodities from a variety of materials to, on the one hand, to protect the surface and, on the other hand, to give it a decorative appearance. For this purpose a variety of matrix materials, which serve to reduce the sensitivity of the surface to mechanical, thermal or chemical stress, although the NGOs to give them a decorative look. Often the matrix material bases are for example, thermoplastics or elastomers, which can be cured under the action of heat or radiation.

In particular, the surface of the furniture and floors often have a very strong mechanical loads and should be protected.

It is well known also applied to furniture surfaces, floors, etc. of the so-called laminates high pressure to give a decorative look. When this laminate is often consists of three different layers: a layer of colored paper or paper with a decorative print, lying on it transparent paper overlay and several underlying layers of the so-called base paper, which serve as a substrate for decorative paper and paper overlay. Generally, all three types of paper impregnated with thermosetting synthetic resin.

There are other solutions that have decorative paper covered with paper overlay and directly prepressure when heated to a wood-fiber plate, as well as the way in which the decorative printing is applied directly to the prepared and primed wood-fiber plate, after which the surface is covered with full of high-strength aluminum oxide transparent lacquer based on acrylate and then utverjdayut radiation.

As cured with heat and/or irradiation is sinteticheskih resins or coating systems suitable in particular, phenolic resin, acrylic resin, epoxy resin, polyester resin, melamine resin, aminos, polyurethanes, and mixtures of these components. In the past, constantly tried to increase the strength of the laminate to abrasion by introducing spheroidal particles in a resin, which cover, for example, impregnated before the Foundation of the decorative paper.

So many publications and patents describe appropriate ways to obtain a wear-resistant decorative coatings, respectively, laminates, which as suitable high strength particles to obtain a wear-resistant decorative layers are called first of all particles on the basis of aluminum oxide. Thus the preferred range of average sizes of these particles is from 1 to 80 μm.

So in the document US 3,928,706 retrieves a wear-resistant decorative coatings, which consist of a base paper, decorative paper, a protective layer and a paper overlay. Layer of protection against wear of thermosetting synthetic resin with dispersed therein finely dispersed high-strength material having a Mohs hardness of at least 7, is applied to the surface or decorative paper, or paper overlay. All three layers of paper impregnated with thermosetting synthetic resin and processed in the usual way with getting a the tion of the laminate, and they are at temperatures of about 150°C are pressed between polished plates of the press.

The document EP 0 519242 A1 describes anti-wear coating with the utmost transparency and luster, which receive the fact that decorative paper supply upper protective layer, which contains coated with silane spheroidal particles. Here, processing in the finished laminate is pressed.

In all cases receive the wear surfaces of the laminate through the introduction of spheroidal particles in the paper overlay or decorative paper or by direct coating filled with high-strength material liquid coating leads to a serious problem at the last stage of manufacture of the laminate, as and when the periodic mode with the use of presses with the polished plates of the press, and in continuous mode with belt presses the surface of the plates of the press or belt presses scratched due to contact with high-strength particles and relatively quickly come into disrepair. The wear plates of the press is a very significant cost factor in obtaining a wear-resistant decorative coatings.

Attempts to solve the problem of wear in the manufacture was limited in most cases to ensure that appropriate measures to prevent direct contact between the high-strength cha is the tics and the press plate.

So in WO 2006/013469 describes a technique in which the first, on the basis of the cause of the first polymer layer, which contains high strength particles, such as corundum, and then on the first wear-resistant layer is applied a second polymer layer, which introduced the particles having a relatively high hardness, but low abrasiveness. As these particles were called, for example, glass beads or glass.

A similar method is described in EP 1 319524 A1, where the task is solved in that apply varnish or impregnating resin systems that contain balls, in particular glass beads having a relatively high hardness, but low self-abrasion. In this case, from the application itself spheroidal particles of refuse.

In document WO 02/066265 A1 describes a method of obtaining a decorative paper in which wear-resistant particles, such as corundum or silicon carbide, which are introduced into the resin, the additional work operation covered by glass beads or glass fibers, to thereby prevent direct contact of particles of corundum or silicon carbide with a mirror surface and press it to prevent damage. So, beads or fibers provide the desired safety distance between the wear-resistant particles and Plato the press or belt press.

Patent EP 1 339545 B1 describes anti-wear coating based on synthetic resins, and synthetic resin in addition to the high strength of particles with a Mohs hardness of at least 6 additionally impose essentially no cutting edges round solid particles in the form of balls with a lower hardness, the average grain size of which is larger than the average grain size spheroidal particles. This is also achieved that a direct contact of the surface of the press plate with high strength particles essentially prevented, and all solid particles are something like struts.

However, all these methods have the disadvantage that it is now in the outer region of the decorative layer instead of spheroidal particles stacked particles with a lower hardness, which decreases the abrasion resistance of the layer as a whole.

But it is in the area of floors or laminate flooring, in particular, in public buildings or industrial plants, as well as for surfaces often used furniture or working surfaces wear resistance plays an increasingly important role and becomes a very strong argument for purchase and a quality criterion. For example, laminate floors spread over the wear resistance, and resistance to wear and tear define the so-called "Taber test, and distribute floors classes durability. Inthis test determines the resistance of the upper layer to the through wiping. Abrasion is achieved by the fact that the sample for testing rotate under loaded cylindrical friction disks covered with sandpaper. Measures the number of revolutions required to achieve a prescribed degree of abrasion.

For this test according to DIN EN 13329 of the element laminate floor is cut test pieces about the size of 100 mm×100 mm and shares marker in four quadrants. The surface of the sample for testing in precisely defined conditions (pressure, speed etc) is handled by two friction disks, certain covered with sandpaper, and strips of sandpaper replaced after every 200 turns. This test continues until, until it reaches the so-called starting point abrasion (IP). The starting point of abrasion (IP) represents the number of revolutions when first appears clearly distinguishable through the wiping decorative printing, and in three of the four quadrants opens the bottom layer. Thus laminate floors are subdivided by classes of abrasion from AC 1 to AC 5, which corresponds to the value of IP ≥900 ≥6000.

Thus, underlying the present invention is to increase the abrasion resistance protects from wear and tear coverage without simultaneous increase of the abrasion of the plates of the press or belt presses. The objective of the decision is as a protective coating against wear with signs of paragraph 1 of the claims.

Unexpectedly it was found that the anti-wear coating with high wear resistance is obtained by introducing the matrix material is a mixture of particles of high-strength material of irregular shape with a Mohs hardness of at least 6 and essentially not having cutting edges round solid particles with a Mohs hardness of at least 3. The average diameter of the solid particles must be equal to or less than the average particle diameter high-strength material.

An unexpected result of a large number of studies on the wear resistance was the fact that the wear-resistant anti-wear coating is increased if part of spheroidal particles, which in fact should provide wear resistance, replace with essentially no cutting edges round solid particles, the average diameter of which is equal to or less than the average diameter of the spheroidal particles. This interesting phenomenon has been confirmed for a number of different matrix materials. Thus, similar effects have been found in varnishes, plastics, glass, ceramics or enamel.

In particular, when using the example thermoplastic or elastomer as a matrix material can be either by the corresponding change of spheroidal particles of irregular shape without cutting edges round solid particles to achieve a noticeable increase p is echnosti abrasion protective coating, that explains, perhaps, a particularly good binding essentially all of the solid particles in this system. In a preferred form of implementation requires that the matrix material was a synthetic resin-based melamine, acrylate, epoxide, polyurethane, polyamide, polyester, polyimide, rubber, rubber or mixtures thereof. These systems are preferably used to protect from wear coatings, and increased wear of the respective layers is of particular technical importance.

Share essentially not having cutting edges all the solid particles in the injected mixture can vary from 0.1 up to 99.0 wt.%, in the calculation of the full contents of the input particles. This wide range of application makes sense because in many areas all the time you have to maneuver between the high wear plates of the press and particularly high wear resistance. Here every time you need to find out what proportion of not having cutting edges round solid particles may contain a mixture that was not marked influence on the wear resistance. Although a high proportion of all solid particles and reduces the wear plates of the press, but at the same time decreases the wear resistance in General. Preferably used from 5 to 70 wt.% all solid particles from the entire mixture. In particular, in the field of laminate flooring, it was found that the CCA is i.i.d. best results can be achieved, if from 10 to 50 wt.% the whole mixture is in the form of a circular solid particles. When these latter ratios for all systems were able to establish the improvement of wear resistance in comparison with the use of only high strength particles.

Spheroidal particles of irregular shape usually chosen from the group consisting of aluminum oxide, corundum, fused corundum, sintered corundum, zirconium corundum, Sol-gel corundum, silicon carbide and boron carbide. As a Mohs hardness of these materials is significantly higher than 6, the hardness of high-strength materials by itself is of secondary importance when choosing a high-strength material for a specific application. Often these materials are chosen for their color, transparency, strength in compression and binding characteristics in the matrix. So one of the favorite high-strength materials for use in anti-wear coating is fused corundum, which in addition to its high hardness differs in that it is available in large quantities, inexpensive to obtain and, in addition, can be obtained in different colouring. So often transparent laminates used white electrocorundum, as the transparency and neutrality of the color protect from wear of the coating remain at relatively high content of corundum. As no cutting is x edges round solid particles are used, as a rule, solid beads of glass and/or sintered ceramics. Depending on the choice of balls you can implement additional options balance between wear resistance and wear plate press.

Particularly useful was the glass beads, as they have a relatively high hardness, are simultaneously transparent and, in addition, can be purchased in large quantities and inexpensively. In addition, glass beads, you can get almost any desired diameter. Along with pure glass beads can also be applied in connection with a higher or lower hardness than pure glass.

For certain applications it can be beneficial use without cutting edges of sintered ceramic particles, and here, however, their use is severely limited due to the lack of transparency. For example, these ceramic particles can be used in opaque colored upper, if we are talking about how to further reduce the hardness of all solid particles, to thereby reduce the share of irregular spheroidal particles of irregular shape while maintaining durability.

Usually round, not having cutting edges solid particles consist essentially of silicon oxide, aluminum oxide, mullite, spinel or Zirconia Ilyich mixtures. Color, hardness, and coefficient of expansion or characteristics at break not having cutting edges round solid particles can be changed more modifying components, such as sodium oxide, lithium oxide, potassium oxide, iron oxide, titanium oxide, magnesium oxide, calcium oxide, neodymium oxide, lanthanum oxide, cerium oxide, yttrium oxide and/or boron oxide.

The full amount of the introduced solid particles is usually from 2 to 80 vol.% in the calculation of the matrix material. This corresponds to the proportion of solid particles introduced into the basis, depending on the difference in relative density between the matrix material and solid particles from 2 to 200 g / m2. For the preferred forms of implementation, in particular in the field of laminates full number of solid particles is from 10 to 50 g / m2.

As for transparency, anti-wear coating and binding high-strength material, respectively, not having cutting edges round solid particles was found that surface treatment of the particles with adhesion promoter leads to improved transparency and associate. Appropriate tools for surface treatment are silanes, in particular organosilane, such as aminoalkylsilane or aminoalkylsilane. Such processing is well known and often use Auda, to improve the bonding solid materials, including solid oxide materials in an organic matrix material. In particular, when using alumina as a high-strength material and glass beads for blasting as not having cutting edges round solids pre-treatment of the particles or their mixtures with aminopropyltriethoxysilane extremely positive effect on the binding and on the transparency of the anti-wear coating.

In one particular form of implementation of the present invention for the surface treatment are used aminoalkylsilane from a group of aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane and/or N-(2-amino-ethyl)-3-aminopropyltrimethoxysilane. The amount of silane is usually from 0.1 to 10 wt.%, in calculating the share of spheroidal particles and/or solid particles. The processing itself known and relatively simple. For example, you can directly add silanes as 20%solution in distilled water of high strength particles, or solids, or mixtures thereof in the mixer, then stir and then dried at a temperature of about 80°C.

Protect from wear coating according to the invention finds application to obtain a wear-resistant p. the surfaces on wood material, on impregnated decorative paper or with decorative printing wood-fiber plates for the manufacture of parquet flooring, laminate flooring, furniture surfaces or working surfaces. In addition, anti-wear coating according to the invention can be applied to obtain a wear-resistant metal surfaces, for example, whether or not containing solvent liquid or powder paint systems. The following interesting application of anti-wear coatings according to the invention relates to the production of glaze for coating tiles and sanitary ceramics or to obtain enamel for coating metal tanks, reactors for chemical industry, household items, such as plates, pots or pans, or utensils.

Hereinafter the invention will be explained more examples that demonstrate the use of laminates, as in this area the assessment of the durability standardized and, thus, ensures the comparability of individual experiments. However, this should not be construed as limiting, on the contrary, the study shows that a similar behavior is also the rest of the systems considered above.

EXAMPLES

Test series 1 (different is concentratie not having cutting edges round solid particles)

As source material for essentially not having cutting edges round solid particles used glass beads for blasting (Sovitec, France), which by analogy with conventional screening for grinding grains according to the FEPA standard 42-D-1984 R 1993 were classified as sifting grain 220". The hardness of glass beads for blasting was 5.1 GPA Vickers (HVof 0.2) (5 on the Mohs scale) and was determined on the balls with a diameter of 0.4-0.6 mm

As source material for spheroidal particles of irregular shape used white electrocorundum (Alodur ZWSK-220, Treibacher Schleifmittel AG, Austria). Hardness Vickers (HVof 0.2)=20.2 HPa (9 on the Mohs scale).

In the following table 1 shows the results of the corresponding sieve analysis according to FEPA, with the results indicated in wt.% balance control sieve or sifting.

Table 1
Room sieve (ám)106755345The bottom
Sieve residue/Sifting (%)
Alodur ZWSK-220 08,372,711,97,1
Glass beads for blasting, grain 22003,276,315,1of 5.4

Table 2 shows the results of measurement of particle size distribution of these samples by laser diffraction spectrometer [production Malvern Instruments Ltd., UK, device type: Mastersizer 2000 with the dispersion module Hydro 2000S(A)]. The results are typically specified as% vol. (d10d50d90).

Table 2
Granulometric composition (vol.%)d90%d50%d10%
particle diameter (ám)
Alodur ZWSK-220112,074,0848,68
Glass beads for blasting, grain 22077,4155,50 39,64
Note: d50%means that 50% of the particles measured by a laser diffraction, have a diameter less than a specified size in microns.

From tables 1 and 2 it follows that despite similar screening on FEPA, measurement using laser diffraction (Malvern) give significantly smaller average particle size d50for glass beads for blasting. From the drawings it is obvious that the description of the relative particle size distribution strongly depends on the actual measurement method. When further specify the average size of the particles, then, unless explicitly stated otherwise, the basis for the numerical values has always been the measurement by laser diffraction.

Spheroidal particles of irregular shape and essentially not having cutting edges all solids were subjected separately to surface treatment, and each time 500 g of particles with 12 g of a 20%aqueous solution of aminopropyltriethoxysilane (AMEO, Degussa, Germany) was administered in distilled water and then mixed in a forced action mixer. Thus obtained mixture was dried in a drying Cabinet at 80°C for several hours.

Then various mixtures (see table 1) from the relevant covered with irregular shape spheroidal particles and what about the merits of not having cutting edges round solid particles were used to obtain samples of the laminate for testing in the so-called Taber test according to DIN EN 13329.

This is known from the prior art of decorative paper impregnated before the Foundation of the melamine-formaldehyde resin (Prefere 70 0562L, Dynea Austria), additives and hardeners (Melatec, Switzerland). This soaked and wet decorative paper method "wet on wet" inflicted protect from wear coating in the form of a suspension of melamine-formaldehyde resin with high strength particles, all solid particles or their mixture and then it was dried in a drying oven at 145°C to a residual moisture content of 5-6%.

The concentration of solid particles in suspension melamine-formaldehyde resin was chosen so that the proportion of solid particles in the finished samples for testing was 25 g/m2that corresponds to a solids content of 30-40%, in the calculation of the matrix material.

Then the decorative paper was laid on the wood-fiber plate high density and covered with a paper overlay, also impregnated with melamine-formaldehyde resin. Under high-density fiberboard laid paper compensating layer. Then all this construction paper concentrating layer/high-density fiberboard/decorative paper/paper overlay extruded 15 seconds at 205°C under a force of 350 N.

Obtained samples for testing were subjected to the Taber test. The test results are shown in table 3, and the respective graph (Phi is .1).

1

From the results in table 3, and the corresponding graphical representation in Fig. 1 one can see that the wear resistance of the test sample of the laminate due to the substitution of high-strength particles softer glass ball first suddenly rises. Replace high-strength particles softer glass ball without significant decrease in wear resistance can be up to content almost 40 wt.%. This not only leads to a marked reduction of the wear plates of the press, and in rare cases can even give up paper overlay, but also to an overall cost reduction as glass beads, usually cheaper than the corresponding spheroidal particles.

Test series 2 (various aspect ratios d50%high strength particles: d50%solid particles)

In this series of tests used the same raw materials as in test series 1, however for glass beads for blasting used in different prosave. And in this case, the screening was carried out according to the FEPA standard.

Table 4 shows the particle size composition of samples used, according to FEPA.

Table 3
ExampleAlodur-ZWSK F220 d50%=74,08 μm*(wt.%)Glass beads for blasting, grain 220, d50%=55,50 μm*(wt.%)The Taber test, the IP value (speed)
1100-4800
280205300
360405000
450504300
540603600
620802600
7-100800
Note: *=laser diffraction (Malvern)
Table 4
The room is ITA (µm) 15010675635345The bottom
Sieve residue/Sifting (%)
Alodur ZWSK-22008,3-72,711,97,1
Glass beads for blasting, grain 180039,457,2-2,70,60
Glass beads for blasting, grain 22003,2-76,31,1 of 5.4
Glass beads for blasting, the fine fraction00,19,923,566,5

Additionally, table 5 shows the results of laser diffraction analysis (Malvern).

Table 5
Granulometric composition (vol.%)d90%d50%d10%
Particle diameter (ám)
Alodur ZWSK-220112,074,0848,68
Glass beads for blasting, grain 180124,7690,0764,90
Glass beads for blasting, grain 22077,4155,5039,64
Glass is ariki for blasting, the fine fraction56,3034,7720,87

From tables 4 and 5 it follows that the description of the relative particle size distribution strongly depends on the appropriate method of measurement. When further specified average particle size d50%then, unless explicitly stated otherwise, the basis for the numerical values has always been the measurement by laser diffraction (Malvern).

In the second series of tests used a mixture of 50:50. The respective mixtures are shown in table 6, indicating a medium size particles (d50%. For comparison, a suspension of pure high-strength material with a share of high-strength material 50% or 100%.

Obtaining samples for testing in the Taber test was conducted similar to test series 1. The results of the Taber test is summarized in table 6 and graphically presented in Fig. 2.

Table 6
ExampleAlodur ZWSK F220 (wt.%)Glass beads for blasting (wt.%)The Taber test is IP (speed)
d50%=74,08 mcm grain 180 d50%=90,07 mcmgrain 220 d50%=55,50 pmdetail d50%=34,77 mcm
85050--3530
450-504300
950--503060
1050---2600
1100---4800

Fig. 2

From the results in table 6 and the graphical representation (figure 2) one can see that already a relatively small offset relationship of the average size d50%round solid particles to the average size of d50% of spheroidal particles in the direction of increasing, due to the solid particles, etc which leads to a surprising deterioration in durability. Apparently, the optimum in terms of wear resistance, corresponds to the case when the average size of d50% of all solid particles is slightly less than the average size of d50%spheroidal particles. If, on the contrary, the average size of all solid particles will be much less (see example 9), we also noted a significant deterioration in durability.

In addition, it is striking that in General adding glass beads to protect from wear coating, containing only high strength particles (example 10 compared with examples 8, 4 and 9), there is a noticeable improvement of wear resistance.

1. Anti-wear coating is introduced into the matrix material is a mixture of spheroidal particles of irregular shape and round solid particles, essentially, not having cutting edges, and high strength particles have a Mohs hardness of at least 6, and the solid particles have a Mohs hardness of at least 3, characterized in that the average diameter of the solid particles is equal to or less than the average diameter of the spheroidal particles.

2. Protect from wear coating according to claim 1, characterized in that the matrix material is selected from the group including varnishes, plastics, glass, ceramics and enamel.

3. Protect from wear coating according to claim 1, characterized in that the matrix material is Duroplast, thermoplastic or ELA what Tomer.

4. Protect from wear coating according to claim 1, characterized in that the matrix material is a synthetic resin-based melamine, acrylate, epoxide, polyurethane, polyamide, polyester, polyimide, rubber, rubber or mixtures thereof.

5. Protect from wear coating according to claim 1, characterized in that the proportion in the mixture introduced, essentially, not having cutting edges round solid particles is from 0.1 to 99.9 wt.%, preferably from 5 to 70 wt.%, particularly preferably from 10 to 50 wt.%, in the calculation of the full content of the injected particles.

6. Protect from wear coating according to claim 1, characterized in that the spheroidal particles of irregular shape selected from the group comprising aluminium oxide, corundum, fused corundum, sintered corundum, zirconium corundum, Sol-gel corundum, silicon carbide and boron carbide.

7. Protect from wear coating according to claim 5, characterized in that, in essence, not having cutting edges round solid particles are solid beads of glass and/or sintered ceramics.

8. Protect from wear coating according to claim 7, characterized in that, in essence, not having cutting edges round solid particles consist essentially of SiO2, Al2O3, mullite, spinel, ZrO2or mixtures thereof, and optionally can contain up to 15 wt.% modifying components, as, for example, Na2O, Li2O, K2 O, Fe2O3, TiO2, MgO, CaO, NbO, LaO, Y2O3, SEO, and/or In2About3.

9. Protect from wear coating according to claim 1, characterized in that the total amount of introduced solids basis is 5-70%, in the calculation of the matrix material.

10. Protect from wear coating according to claim 1, characterized in that the total amount of solids introduced into the matrix, is from 2 to 200 g/m2, preferably from 20 to 50 g/m2.

11. Protect from wear coating according to claim 1, characterized in that the spheroidal particles of irregular shape and/or, essentially, not having cutting edges round solid particles before introduction into the matrix material is subjected to surface treatment of organic and/or inorganic adhesion promoters.

12. Protect from wear floor in claim 11, characterized in that the adhesion promoter is a silane, in particular organosilane, as, for example, aminoalkylsilane or aminoalkylsilane from a group of aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane and N-(2-amino-ethyl)-3-aminopropyltrimethoxysilane.

13. Anti-wear coating on item 12, characterized in that the proportion of silane is from 0.1 to 10 wt.% in the calculation of the full content of spheroidal particles and/or solid particles.

4. The use of anti-wear coating according to one of claims 1 to 13 to obtain a wear-resistant surfaces on wood materials impregnated decorative paper or wood-fiber plates with decorative printing for the manufacture of parquet flooring, laminate flooring, furniture surfaces or working surfaces.

15. The use of anti-wear coating according to one of claims 1 to 11 to obtain a wear-resistant surfaces on the grounds of plastic, glass, ceramic, metal or concrete.

16. The use of anti-wear coating according to one of claims 1 to 11 for the glaze to cover the tiles and sanitary ceramics, as well as to obtain enamel for coating of metal tanks or reactors for the chemical industry, as well as to cover household devices and appliances.



 

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17 cl, 1 dwg

FIELD: woodworking industry.

SUBSTANCE: material comprises fibrous base from craft paper with applied impression of desirable printing dye with impregnation by resin or mixture of resins coloured into a desired colour. Impregnation with resin or mixture of resins is carried out prior to application of impression or after application of impression. Fibre base is soaked with application of one or more layer of resin. Resin or mixture of resins is selected from group, which contains phenol, amine, acryl and/or other similar resins. Coating material is produced by method, where resin or mixture of resins is used, and craft paper is used as fibre base. Resin or mixture of resins are coloured using desired dye. Impression is applied onto craft paper, using desirable printing dye, and impregnated, using specified resin or mixture of resins.

EFFECT: improved strength of coating material and high colour resistance to light and temperature.

18 cl, 4 tbl, 2 ex

FIELD: textiles, paper.

SUBSTANCE: wear proof particles are treated with adhesion promoter based on silane or sylon and then deposited on paper, impregnated with resin, thereby obtaining coating. Fibre is electrically charged and put onto the coating. Drying is then carried out. The device for implementing the given method has a equipment for depositing wear proof particles on paper, equipment for charging fibre and putting the charged fibre onto the paper. The latter consists of a roller with depressions, made with provision for rotating, and a brush mounted near the roller for cleaning the depressions. The device also has apparatus for electrically charging the roller and/or the brush and the roller, which is made with provision for rotation and passing paper sheets under the roller with depressions. Paper, made using this technique, has a wear proof coating and electrically charged fibres on the wear proof coating. The charged fibres used can be made from polyester and/or cotton, and/or cotton linter.

EFFECT: obtaining wear proof paper with improved properties.

14 cl, 3 dwg

FIELD: paper industry.

SUBSTANCE: base paper for decorative coating materials contains 10 to about 65% of pigment, which includes silicon- and aluminum-modified titanium dioxide in combination with another, white pigment. Titanium dioxide-based pigment is characterized by oil capacity at least 25% and solubility in sulfuric acid at least 15% TiO2. Invention also provides decorative paper or decorative film containing above base paper.

EFFECT: increased opacity of base paper at lower consumption of titanium dioxide.

7 cl, 1 tbl, 8 ex

FIELD: papermaking.

SUBSTANCE: pre-impregnate is manufactured by impregnation of crude paper with thermosetting formaldehyde-free resin until content thereof 10 to 70%. Residual moisture content in pre-impregnate is 2-3%. Resin contains: at least one radical-polymerization polymer with less than 5% of α,β-ethylenically unsaturated mono- or dicarboxylic acid; at least one radical-polymerization polymer containing more than 5% of α,β-ethylenically unsaturated mono- or dicarboxylic acid; and at least one alkanolamine with at least two hydroxyl groups; or resin contains at least one radical-polymerization polymer with 5-100%, particularly 5-50%, or more particularly 10-40% of α,β-ethylenically unsaturated mono- or dicarboxylic acid and at least one above alkanolamine.

EFFECT: improved quality of surface, printing properties, delamination resistance, and varnishing capacity.

16 cl, 3 dwg, 2 tbl, 2 ex

The invention relates to a method for impregnating decorative paper, intended for the manufacture of highly wear-resistant laminated flooring materials, in which the decorative paper is first moistened and thereby impregnate amenomori, and thus regulate the content of the resin

The invention relates to the technology of making paper-the basics and allows to increase its strength in dry and wet conditions, to reduce the fragility obtained on the basis of the protective film

The invention relates to the production of adhesive compositions used in the manufacture of materials with a layer of permanent stickiness, and can find application in the production of sticky tape on a paper basis

FIELD: textile industry, paper industry.

SUBSTANCE: method (version) relates to production of paper base meant for vulcanising and parchmentising and can be used in paper-pulp industry. The method includes the following stages. Energy radiation of cellulose fiber in dry condition. Grinding and refining of irradiate fiber in aqueous media till homogeneous fiber solution is prepared. Formation of web from prepared fibrous suspension, which is dewatered and dried to prepare paper base. According to another version, after paper web forming paper base is exposed to radiation to decrease polymerisation degree of fiber.

EFFECT: development of clean and economically effective process of paper base production for vulcanising and parchmentising as well as decrease of environmental pollution.

26 cl, 4 tbl, 3 ex

The invention relates to a method for impregnating decorative paper, intended for the manufacture of highly wear-resistant laminated flooring materials, in which the decorative paper is first moistened and thereby impregnate amenomori, and thus regulate the content of the resin

The invention relates to the production of film materials based on paper and can be used in the manufacture of high-quality low-toxic coated materials, for example, in the manufacture of furniture and standard construction

FIELD: textiles, paper.

SUBSTANCE: wear proof particles are treated with adhesion promoter based on silane or sylon and then deposited on paper, impregnated with resin, thereby obtaining coating. Fibre is electrically charged and put onto the coating. Drying is then carried out. The device for implementing the given method has a equipment for depositing wear proof particles on paper, equipment for charging fibre and putting the charged fibre onto the paper. The latter consists of a roller with depressions, made with provision for rotating, and a brush mounted near the roller for cleaning the depressions. The device also has apparatus for electrically charging the roller and/or the brush and the roller, which is made with provision for rotation and passing paper sheets under the roller with depressions. Paper, made using this technique, has a wear proof coating and electrically charged fibres on the wear proof coating. The charged fibres used can be made from polyester and/or cotton, and/or cotton linter.

EFFECT: obtaining wear proof paper with improved properties.

14 cl, 3 dwg

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