SU1375611A1 - Composition for finishing work - Google Patents

Abstract

The invention is intended to produce decorative and protective textured coatings for concrete, asbestos cement and bricks. The purpose of the invention is to reduce the washability of the coating. The finishing composition contains, ma.h: styrene-butadiene latex JOO, sodium carboxymethylcellulose 2.0-2.1; chalk 26,4-35; lime flour 35.5-45.0; pigment 5-6,6; white titanium 8.8- 15.0; water 33.1-34.2; polyethyl siloxane 6.6-12.5; hammer rock argillite-menilitic shale 1,25- 2.2. The composition can be applied to. Owned 1l alkaline surface. 2 tab. with S (L

Description

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The invention relates to building materials and is intended for the production of decorative and protective texture coatings for concrete, asbestos cement and bricks.

The purpose of the invention is to reduce washability.

Hammer rock of argillite-menilitic shales contains, wt%: SiO 50-64 | CH O, 7-13; Ge ,, OZZ-6; . CaO 0.3-1.5 KjO + 0.4-1.6j, the organic part the rest. Fineness, grinding 100 microns.

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The compositions of the proposed composition. are shown in table 1.

The composition is prepared as follows.

An 8% solution of sodium carboxymethyl cellulose is prepared, then pigments, titanium dioxide and 50% of the total amount of latex are added according to the recipe. The resulting mixture is stirred and ground on a spray meter. Separately, bulk components are prepared: chalk, lime flour, ground rock is added to shale and the mixture is thoroughly mixed. The resulting pigment paste is loaded into the mixer, the dry components are added, and polyethylhydrosyloxane is added in small portions with continuous mixing, then latex. The mixture is agitated until homogeneous, passed through a spray and shake.

The composition is applied to the pre-primed surface with a roller or through a sprayer. For the preparation of the primer, the same composition is diluted to a viscosity of 15-20 seconds by VZ-A. The basic composition is separated surfaces 8-10 hours after the application of the rp iting. The composition is applied at one time. Consumption composition 800-900 g / m.

The composition is distinguished by high decorative properties; it allows to obtain a variety of textured textures.

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dog, skrashat small surface defects.

Due to the fact that the composition has a high pH (about iJ), it can be applied to wet, alkaline surfaces. The color of the composition does not change.

The proposed composition has the ability to retain a given texture both in the wet state and after its drying, and the shrinkage cracks characteristic of all the other compositions used are not observed.

Physico-mechanical properties of the proposed composition and coatings based on it in comparison with the known composition are presented in table 2.

Claims (1)

Invention Formula The finishing composition, including styrene-butadiene latex, sodium carboxymethyl cellulose, chalk, limestone flour, pigment, titanium white, water, and silicon organic compound, differs in that ““ One organic compound, polyethylsiloxane, and additionally ground rock of argillite-menilite shale in the following ratio, wt.h.: Styrene butadiene latex. Known Cove flour35.5-45.0 Pigment5-6,6 White titanium 8.8-15 Water 33.1-34.2 Polyethylsiloxane6, 6-12.5 Hammer argiltomenilite schist 1,25-2.2 rock Table j Note. Compounds 1 and 5 are shown to substantiate the selected ratio of components. Table 2 15 20 2020 Micro- Uniform crack texture 2222 8888 10 13 14 14 eleven Wreckage 5.0 18.0 Properties Indicators for composition i.ri.-L ZIGIIEI Composition stability during storage (availability exfoliation through sediment 10 days) The durability of the coating in the chamber Faytron (light resistance, crack resistance), cycle 100 Continuation of table 2 famous No sediment 100