SU770563A1 - Coating producing method - Google Patents

Description

The invention relates to the production of building materials and can be used in the production of cladding tiles with imitation finishing, characterized by artificial 5 reproduction of texture, not characteristic of the finished surface,

There is a known method of coating by immersion. Substrates in a bath of water, on the surface of which there is a film of coloring pigment. To obtain a pattern that simulates a rock, purified turpentine is added to the bath.

A method of obtaining a coating is known by depositing a coloring composition by spraying £ 2}. In this method, the finishing compositions are sprayed with sprays, spray guns due to high pressure at 20

jet sprayed dye solution or spray paint with a jet of compressed air.

The disadvantages of this method are significant losses of paintwork materials, the need to work in special spray chambers, air pollution in the finishing room, and significant energy consumption.

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The quality of the coating in the course of finishing in a known manner depends on the design of the sprayer and whether this design corresponds to the spray mode (pressure, speed of movement of the sprayer, nozzle distance from the surface to be treated).

The aim of the invention is to eliminate the above disadvantages, as well as to achieve the accuracy of the reproducible pattern.

According to the invention, polymeric binders applied on the surface _and containing coloring pigments of various colors are treated with a stream of compressed air at a pressure of 0.15 atm until hardening.

The essence of the method of decorative finishing is as follows.

A composition based on a polymeric binder containing coloring pigments is applied to the prepared surface of the tree and then, not allowing the composition to dry, the polymer binder containing coloring pigments of another gamma is applied again, and the surface is then treated with a composition with a stream of air under pressure. 0.1-5 MPa before curing the polymer binder.

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Example 1. Surface finish in black marble.

To 500 g of epoxy resin ED-20 add 50 g of dibutyl phthalate (plasticizer) and 5 g of oil art paint carbon black. The mixture is thoroughly mixed and 50 g of polyethylene polyamine (hardener) is added.

The mixture obtained is applied to a 100 x 100 mm chipboard.

Then prepare a new portion of the mixture: to 50 g of epoxy resin add 5 g of dibutyl phthalate and 0.5 g of white zinc white paint. The mixture is thoroughly mixed, add 5 g of poly-15 ethylene polyamine.

The resulting composition is randomly poured onto the applied black mixture in. in the form of strips 20 mm wide, after which a freshly applied composition is treated with a jet of compressed air from a compressor 20 for 5-10 minutes. After polymerization, the product is polished, filled with polyester varnish and polished and polished again. __

Example 2. Surface finish · under malachite.

50 g of green pentaphthalic enamel are applied on a 500 x 150 mm plate made of glass profile. Then, randomly pour 30 5 g of brown enamel and 5 g of dark green enamel onto the plate. Freshly applied enamel is treated with a stream of compressed air for 3-5 minutes. After the enamel has dried, the plate is sanded and polished.

25 g of ivory oil-based paint are applied to a 200 x 200 mm gypsum tile. Then, using dark-brown oil paint, random strokes are applied to the tile, which is immediately blown with a jet of compressed air for 6-10 minutes.

Example 4. Surface finish under carnelian.

250 g of black pentaphthalic enamel with a 20% content of fine-ground quartz sand are applied to a veneer of wood with dimensions of 500 x 500 mm. The viscosity of the enamel 40 with VZ-4.

On a freshly applied black background, 100 g of yellow and fine enamel of the same viscosity are applied arbitrarily, after which the compositions are treated with a stream of compressed air at a pressure of 2 atm.

Example 5. Surface finishing for flint.

On asbestos cement slab size

"G * -

250 x 250 mm apply brown epoxy enamel with a 25% filler content (fine ground quartz sand), then randomly pour 40 cream, 20 yellow and 20 g white enamel of the same viscosity.

Freshly applied formulations are treated with a stream of compressed air under a pressure of 3 MPa.

The following intervals of viscosity of compositions based on polymeric binders are recommended: 30-80 seconds according to VZ-4 at 20 ° C at air pressure of 1-5 atms, compositions with a viscosity of 15-29 seconds at pressures of 5 atm are allowed.

Comparative characteristics of the efficiency of various methods of applying coatings are shown in the table.

Example 3. Surface finish under Karelian birch.

Indicator Application Method Proposed ¹ Spraying Rolls Pouring cold hotter Dry thickness film, micron 145 145 145 145 145 Material consumption on 1 m, kg 0.3 1.34 0.72 0.47 0.4 2 Film-forming, % 35 18 29 39 39 Application number 2 four s ten Useful is about Vanye materials % 95 60 70 80 90 Working time on 1'm, min 0.6 3.2 2.4 1.6 0.6 Power,. kw 0.2 2 four, 0.4 1.2 Required arbitrariness own area. per 100 m ² products CII. thirty 60 120 }about 75 ' The cost of electricity - energy per 1 m ² _ _ 6 3 6

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Coating the proposed method compared with rollers and spraying is much more economical in terms of cost per 1 m ^{2 of} finishing materials and working time, as well as the required production areas.

Claims (1)

Claim A method of obtaining a coating by applying to the treated surface compositions based on polymeric binders containing coloring pigments of various colors, curing and polishing, distinguished by the fact that, in order to obtain a coating with a clear decorative pattern and to save material, the surface is coated with compositions treated for mixing with a jet of air at a pressure of 0.1 to 5 ati before curing.