RU2800786C1 - Putty - Google Patents

Abstract

FIELD: compositions.

SUBSTANCE: compositions of putties for plaster, concrete and stone structures. Putty comprises, wt.%: dry hydrated glass HISOL-K 9-12.4, sodium caseinate 0.4-1.2, microcalcite grade KM2 50-55, water 34-38.

EFFECT: accelerated curing of coatings.

1 cl, 6 tbl

Description

The invention relates to finishing compositions used for leveling concrete, plaster and stone surfaces.

Known compositions containing VAT residues of synthetic fatty acids, carboxymethylcellulose, soda ash, laundry soap, chalk [1].

The closest in technical essence and the achieved result is putty, including water glass, styrene-butadiene latex, chalk, silicic acid, water [2].

The disadvantages of the prototype are slow curing time.

The objective of the invention is to eliminate these disadvantages

The problem is solved by the fact that the putty, including a binder, filler, additive, water, contains dry hydrated glass HISOL-K as a binder, KM2 microcalcite as a filler, sodium caseinate as an additive in the following ratio, wt. %:

Dry Hydrated Glass HISOL-K 9-12.4 Sodium caseinate 0.4-1.2 Microcalcite brand KM2 50-55 Water 34-38

The putty preparation technology consists in mixing a mixture of all dry ingredients and water. For the preparation of putty used the following materials:

- powdered hydrated sodium silicate (Liquid glass sodium, dry) (TU20.13.62-002-06051139-2020). The main indicators are shown in table 1;

- microcalcite brand KM2. The main indicators are shown in table 2;

- sodium caseinate. The main indicators are shown in table 3;

- water.

To study the properties of the presented formulations of the composition and coatings based on it, the following methods were used:

- drying time according to GOST 19007-73 “Paint-and-lacquer materials. Method for determining the time and degree of drying” [3];

- adhesion - by tear-off method according to GOST 32299-2013 (ISO 4624:2002) Paintwork materials. Determination of adhesion by pull-off method

The adhesive strength of the coatings was determined by two methods: the method of lattice cuts and the method of punch separation.

To assess the adhesive strength, we used the stamp tear-off method (normal tear-off) according to GOST 32299-2013 “Paint and varnish materials.

Determination of adhesion by the detachment method. The method consists in measuring the force required to tear off the coating from the concrete surface using a glued cylindrical metal stamp with a diameter of 18 mm. The pull-off force was measured using a dynamometer. Epoxy adhesive (EDP-TU 0751-018-48284381-00) was used to glue stamps to the coating. The adhesion strength of the paint to the substrate _Rsc , MPa was determined by the formula:

where P - separation force, N;

F is the area of contact of the stamp with the paintwork, m ² .

Specific examples of putty formulations and properties of coatings based on it are given in Table. 5, 6. Samples of cement-sand mortar were used as substrates for the experimental study.

BIBLIOGRAPHY

1.A.c. 544631 Construction putty (MPK С04В 25/04 (1990.01) Application: 2311142, Application date: 11/1975/25. Published: 01/1977/30, Authors: Pogorelskaya Clara Yakovlevna, Kodochigova Svetlana Petrovna, Kondrashova Nina Vasilievna, Zhidkova Galina Mikhailovna, Okhmanyuk Tamara Ivanovna.

2. A.s. 1454808 Putty (MPK С04В 28/26 (1990.01) Application: 4207415/31-33 Application date: 03/10/87. Published on 01/30/1989. Authors: Yurentlicher Lidia Petrovna, Loganina Valentina Ivanovna.

3. GOST 19007-73 “Paint-and-lacquer materials. Method for determining the time and degree of drying "(with Changes N 1, 2). M .: IPK Standards Publishing House, 2003.

4. GOST 32299-2013 (ISO 4624: 2002) Paint and varnish materials. Determination of adhesion by the separation method - M.: Strandartinform, 2014.

Claims (2)

The putty, including a binder, a filler, an additive, water, contains dry hydrated HISOL-K glass as a binder, microcalcite grade KM2 as a filler, sodium caseinate as an additive in the following ratio, wt. %: Dry Hydrated Glass HISOL-K 9-12.4 Sodium caseinate 0.4-1.2 Microcalcite brand KM2 50-55 Water 34-38