The composition for the modification of solid surfaces

 

(57) Abstract:

Use for the treatment of articles made of ceramics, wood, paper, fabric, metal. The inventive composition contains, wt%: the organosilicon compound is 0.1 - 10, hydrophobic powder filler with a particle size of from 10 μm 2 - 40, an organic solvent to 100. The composition may optionally contain from 0.2 to 15 wt.% adhesive from the group of epoxy Dianova resin, paraffin, vaseline, polyacrylic resin, and 0.1 to 2 wt.% bicarbonate of sodium or aluminum acetate. 3 C.p. f-crystals, 4 PL.

The invention relates to the field of materials science, physical and colloid chemistry, chemistry of organosilicon compounds and technologies protective coating for various purposes. The invention can be used for finishing ceramics, concrete, wood, paper, fabric, metals and to increase resistance to external influences and comprehensive improvement of operational characteristics.

Known composition for modification of a solid surface products, including water emulsion (0.5 to 10 wt.) silicone fluids type NGL-94. The composition is intended for treating fabrics, paper and other materials with tableuse a solution of (1-5 wt.) polyorganosiloxane in an organic solvent. The composition is intended for treating textile materials with the aim of imparting high water-repellent properties.

Closest to the invention to the technical essence is a composition for the modification of solid surfaces, construction materials, solvent containing organosilicon compound in an amount of 0.2 to 2.5 wt. and 0.01-0.5 wt. hydrophobic filler with a specific surface area of more than 50 m2/g and a particle size of 100 μm. The composition is intended for waterproofing building materials: bricks, concrete blocks, ceramic products.

A disadvantage of the known composition of the low efficiency of waterproofing solid materials with a smooth surface such as metal. plastic, enamel, and also the lack of a comprehensive protective effect, increasing corrosion, chemical and microbiological stability in combination with hydrophobic and anti-icing effects.

The objective of the invention is to increase the efficiency of waterproofing materials with a smooth surface and extend the scope of application of the composition due to the simultaneous increase in chemical, corrosion, microbiological, vodostoykomu modified surfaces boom"ptx2">

The problem is solved due to the fact that the composition for the modification of solid surfaces comprises, by weight. the organosilicon compound is 0.1-10, hydrophobic powder filler with a particle size of from 40 to 40 to 10 μm from the group perlite, talc, Aerosil and/or metal oxide 2-40, organic solvent to 100. As organosilicon composition contains a clear, polyethylsiloxane liquid polymethylsiloxane liquid or polymethyl of Selatan. The composition may optionally contain from 0.2 to 15 wt. adhesive from a group of epoxy resin, paraffin, vaseline, polyacrylic resin, for modification of materials from metal, plastics, painted and enameled surfaces. For modification of tissue composition may additionally contain 0.1 to 12 wt. bicarbonate of sodium, or aluminum acetate.

When the content of the hydrophobic filler is less than 2 wt. the composition gives modified the surface of concrete products water-resistant, but does not provide comprehensive protection of ferrous and non-ferrous metals, wood, plastics, fabrics from mikroorganizmov, and chemicals.

When the content of the hydrophobic filler is more than 40 wt. protective effect of modifying sostavlenie conglomerates, which are less resistant to vibration, mechanical stress, temperature changes. In the operation of the products, treated with concentrated (more than 40 wt.) the dispersions of large agglomerates of filler particles fall off, leaving local areas of the surface unprotected. Vsledstvii this disappears the integrated effect of composition and significantly reduced water-repellent effect.

A distinctive feature of this song from the famous counterparts is the absence on the treated surface of the polymer film or layer kremniiorganicheskie connection. Deposited on the surface of the individual particles of the filler is finely dispersed hydrophobic powders with particle sizes 40 40 -- 10 µm 10 µm are retained in it by adhesion. Thus the higher microporosity treated surface, the greater the strength of adhesion, holding superfine powders. Materials such as paper, roofing, concrete, slate, brick, plaster, unpolished wood, textiles, leather and fur do not require special surface preparation for applying and securing therein the composition of the modifying composition.

Methods of accelerated testing shows that n>/P>For fixing composition on smooth surfaces such as polished wood, enameled and polished metal goods requires prior preparation putty, primer standard methods.

The invention is illustrated in the examples of the composition and methods of its use for the enhancement of protective functions of materials.

P R I m e R 1. Prepare ingredients for modification of a solid surface of the brick. Using the solvent hexane is 87.1 wt. the organosilicon compound of the clear 1.9 wt. the hydrophobic filler methylsilicone perlite with a particle size of 1-40 μm in the amount of 4 wt. adhesive acrylic lacquer AK-113 (TU-6-01-432-69) 7 wt.

To obtain hydrophobic perlite powder sample of expanded perlite 5.3g a bulk density of 75 kg/m GOST 10832-83) is subjected to pre-hydroxylation by boiling in water for 24 hours After boiling perlite dried in vacuum to remove physically adsorbed water for 8 h at 200aboutC and a pressure of 1.3 PA. Then spend methylsilicone perlite, with clear and 3-fold stekhiometricheskom excess of the latter (43,2 g) for 8 h at 95aboutC.

The composition is stirred for 15 spymania on the resistance continue 1 h, using the original brick, brick, processed in a known manner, and the brick-treated composition of example 1. The original bricks were wet and the weight has increased its 12-15% Brick, treated with a known composition containing 0.5 wt. Aerosil, darkened the mass increased by 4% Brick, treated with a composition according to the invention, has not changed color and weight.

P R I m e R 2-5. The composition for surface modification of wood, plaster, roofing, marble, travertine, concrete is given in table. 1. The surface of the solid material does not change when exposed to a jet of water for 1 h, if it is treated with the composition given in table. 1. As the adhesive in examples 2-5 use epoxy resin ED-20, polymethylmethacrylate (PMMA) brand L-1, paraffin wax and petrolatum. As organosilicon compounds used polymethylsiloxane (PMS-100 or PMS-50), polyethylsiloxane (PES-5), clear (DMDCS).

P R I m e R 6-10. The composition for the modification of solid surfaces with the content of the hydrophobic filler 1 (control) 2, 20, 40 and 45 wt. (control), other components in example 2, and the solvent 86, 67, 47, 42 and up to 100 wt. apply for comprehensive protection of steel products 3 and the aluminum alloy D16T. Examples of metals of obezjjana the surface of the sample compositions for the modification of surfaces with different filler contents, accordingly, for examples.

Samples of steel 3-treated composition according to the invention and reference compounds with a content of hydrophobic Aerosil 1 and 45 wt. first is subjected to vibration on the stand in an environment of sand for 6 h, and then immersed in 2% aqueous solution of sulfuric acid. Time 100% corrosion of the surface of samples of steel in acid solution according to the examples shown in the table. 2.

Samples of aluminum alloy D16T (elements of whip antennas) with a diameter of 20 mm, the treated composition, placed in the climate chamber.

Samples of aluminum alloy D16T (elements of whip antennas) with a diameter of 20 mm, the treated composition, placed in the climate chamber.

The tube is subjected to cyclic temperature from +3 to -10aboutC at a relative humidity 115-120% within 3 hours After the test tube is externally examined. Exposed tube in the tube according to example 6 is coated with a layer of ice over the entire surface with a thickness of 1 mm On all three tubes, protected by the composition according to example 8-10, visible traces of ice (or moisture) is not observed.

Coatings of this type can be used as protivoobledinitelnoy funds for aircraft, marine and Rania on the corrosion of metals, the treated composition in examples 6-10, carried out in a climatic chamber GOST 9.902-81.

The essence of the test is alternately exposed to samples of high relative humidity and high temperature. For testing produce 6 flat metal samples of steel 08KP size 50 x 100 mm and thickness of 2 mm to 3 sample cause the protective composition according to examples 8, 9, 10 of a thickness of 1100 μm, and 3 control sample composition in examples 6, 10 and coating based on acrylic lacquer AK-113 of the same thickness. Samples exposed in the climate chamber and subjected to cyclic vozdeistviy temperature relative vlagnui air 92% of Each test cycle includes the sequential exposure of the samples at a temperature of 3aboutC for 30 min, with temperature 25aboutC for 1 h, at a temperature of 50aboutC for 1 h Just spend 180 test cycles.

Assessment of corrosion damage metal samples carried out according to GOST 9.076-77. The results are shown in table. 3.

As follows from Fig. 3, the application of the proposed composition of the metals dramatically reduces the corrosion processes in the concentration range of hydrophobic filler 2-40 wt.

P R I m e R 11. For p the one solvent P-5; 5,0 methoxylamine magnesium hydrosilicate (talc); 0.5 a clear and 5.5 adhesive (silicone lacquer KO-85) by the method of dipping in the composition, soak in it for 10 min and dried at room temperature for 2 hours thus Treated a box of matches immersed in water for 2 h, after which matches perfectly lit. At the same time raw, matches is not ignited even after 10-15 seconds after being in water.

At present, addressed the issue of an experimental batch of hydrophobic matches for use in areas with high humidity, for hunters, RYBOLOVOV, geologists, expeditions.

P R I m e R s 12-13. The composition for the modification of solid surfaces can be applied on the human skin to protect the skin from chemical burns, acids, bases, electrolytes, rocket fuels and other highly toxic substances, hot WADSYANAME solutions and water.

The composition includes, by weight. 13-15 oil vaseline or liquid paraffin, 5-10 purified turpentine, 2-15 highly dispersed hydrophobic powder (methyluracil, methoxylamine magnesium hydrosilicate) and 60-79 ethyl alcohol. The composition for the modification, which represents the viscous iconairlines acid (hydrochloric, sulphuric, nitric, phosphoric), alkali (caustic potash and caustic soda), electrolytes, chemical scorch is not observed.

P R I m e R s 14-15. Composition for modification of the treated tissue samples (cotton, wool, canvas, felt). The composition includes, by weight. 97,0 organic solvent (ethyl alcohol), 2,0 modified highly dispersed hydrophobic powder (methyluracil, methoxylamine magnesium hydrosilicate), 1,0 acetic acid aluminum. The modification is performed by soaking in the solution for 20 min with wringing and drying for 30 min, heat treatment at a temperature of 120-150aboutWith under pressure (Ironing). Treated in this way tissues are highly water-repellent - nodding and waterproof properties for a long time. When exposed to such fabrics concentrated acids (HC1H2SO4, HNO3H3PO4) electrolyte and alkali is not their destruction.

The composition for the modification of example 1 is applied onto the paper to create gidrofobizirovannogo capping material (paper, cardboard) used to enhance the durability and reliability of instruments and equipment, preservation of building materials (commentof. The treated paper is dried or is passed between calender rolls rotating at different speeds.

Two packages of Kraft paper, cement filled, one of which is treated with the composition for example, be immersed in water. After 30 minutes remove packages. In normal service the cement absorbs water and becomes unfit for use, and processed remains dry.

P R I m e R s 16-19. The modifier composition according to example 3, but using as filler hydrophobized PMS-100 powders of zinc oxide and titanium, are used to increase the resistance of the semi-linen canvas art, 11201) and packaging Kraft paper to vozdeistviy microscopic fungi. Impregnation of the samples produced by dipping into composition and subsequent drying to constant weight. The gain of samples is for fabric 4,5-4,8% paper 3.9 to 4.1% of Test samples for ustoichivost to the effects of microscopic fungi performed according to GOST 9,049-75, GOST 9.802-84, GOST 9.048-75. The essence of the test is keeping the samples, infected mushrooms for their development, and the subsequent evaluation of gribostojki samples and their fungicidal properties.

Evaluation of gribostojki carried out according to the degree of growth of fungi on which was installed not less than 3 samples. If the growth of fungi preseve 3 points, the sample is considered as negribossi.com. The test duration for funginertness 84 days. The test results for funginertness are given in table. 4.

From table. 4 shows that samples of tissue and paper impregnated with the composition, are ribostamycin when the content of the hydrophobic filler is within the specified limits from 2 to 40 wt.

P R I m e R s 20-22. Compositions for modification of enameled metal products and polished wood contain the following components in wt. Perlite methylsilicone (0.5 µm) 10 chromium Oxide (III), hydrophobe - zeerovannyy paraffin 10 zinc Oxide, hydrophobe - zeerovannyy polymethyl - silazanes brand 141-50P (0.02 mm) 10 Epoxy train 20 5 Acetone 65

The composition is applied after the primer or lacquer surface by a spray gun. The products can be more than 100 cycles UKI in example 7 without corrosion and provide grabotologist no more than 2 points according to example 17.

P R I m e R 23 (control). The composition according to example 3, but with perlite having a particle size of 20 to 80 μm, applied to paper, wood and painted steel 45. Paper and wood when tested according to example 21 do not increase gribostojki (4 and 5 points). Steel 45 corrod is of SOLID SURFACES, containing organosilicon compound, a hydrophobic powder filler with a particle size of 10 μm and an organic solvent, characterized in that the hydrophobic powder filler it contains perlite, talc, Aerosil and/or metal oxide in the following ratio, wt.

The organosilicon compound 0,1 10,0

Hydrophobic powder filler with a particle size of from 2 to 10 microns 40

Organic solvent To 100

2. Composition under item 1, characterized in that as the organosilicon it contains a clear, polyethylsiloxane liquid polymethylsiloxane liquid or polymethylsilane.

3. Composition under item 1, characterized in that it further contains 0.2 to 15.0 wt. adhesive from the group of epoxy, polyacrylate, polyamide resin, paraffin, vaseline.

4. Composition under item 1, characterized in that it additionally contains 0.1 - 2.0 wt. bicarbonate of sodium or aluminum acetate.

 

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