RU2795735C1 - Putty - Google Patents

Abstract

FIELD: compositions of fillers for concrete and stone structures.

SUBSTANCE: putty contains, wt%: slaked lime 20-22, sodium caseinate 0.5-0.6, microcalcite grade KM2 22-28, mivoll microwollastonite 10-97 4.4-5.6, diatomite NDP-D-230 5 .6-7.0, plasticizer Hidetal P-4 0.1-0.2, water 40-44.

EFFECT: accelerating the curing of coatings, increasing the adhesive strength.

1 cl, 8 tbl

Description

The invention relates to finishing compositions used for leveling concrete and plaster 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 styrene-acrylic emulsion Akratam AS 01.1, filler (mixture of sand and clay), silica-containing additive, surfactant additive, 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 lime, filler, mineral additive, microwollastonite, sodium caseinate, plasticizer, water, contains slaked lime as lime, diatomite NDP-D-230 as a mineral additive, microcalcite grade KM2 as filler, in as microwollastonite microwollostanite Mivoll 10-97, as a plasticizer Hidetal P-4 in the following ratio of components, wt. %:

Lime slaked 20-22 Sodium caseinate 0.5-0.6 Microcalcite brand KM2 22-28 Microwollastonite Mivoll 10-97 4.4-5.6 Diatomite NDP-D-230 5.6-7.0 Plasticizer Khidetal P-4 0.1-0.2 Water 40-44

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

- slaked lime (fluff) with an activity of 86%, true density ρ _ist =2200 kg/m ³ and bulk density ρ _sat =480 kg/m ³ (complies with the requirements of GOST 9179-77) [3];

- plasticizer Hidetal P-4 (TU 5745 - 0 05 - 57330160 - 04). The main indicators are shown in table 1;

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

- microvollostanite Mivoll 10-97. The main indicators are shown in table 3;

- diatomaceous earth NDP-D-230. The main indicators are shown in table 4;

- sodium caseinate. The main indicators are shown in table 5

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, the stamp tear-off method (normal tear-off) was used according to GOST 32299-2013 “Paint-and-lacquer 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 glue (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 paint coating, m ² .

Specific examples of putty formulations and the properties of coatings based on it are given in Tables 7, 8. For the experimental study, plates of cement-sand mortar were used as substrates.

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. Patent RU 2448072 COMPOSITION FOR FINISHING THE WALLS OF BUILDINGS. IPC С04В 41/48. Application: 2009142381/03, 2009.11.17. Start date of the patent term report: 2009.11.17. Application date: 2009.11.17, Published: 2012.04.20. Authors: Loganina Valentina Ivanovna (RU) Petukhova Nadezhda Alekseevna (RU) Sadenko Sergey Mikhailovich (RU) Davydova Olga Aleksandrovna (RU). Patent holders: Federal Agency for Education State Educational Institution of Higher Professional Education Penza State University of Architecture and Construction (PGUAC) (RU).

3. GOST 19007-73 “Paint and varnish 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)

Putty, including lime, filler, mineral additive, microwollastonite, sodium caseinate, plasticizer, water, contains hydrated lime as lime, diatomite NDP-D-230 as mineral additive, microcalcite grade KM2 as filler, microwollastonite Mivoll 10 as microwollastonite -97, as a plasticizer Hidetal P-4 with the following ratio of components, wt.%: Lime slaked 20-22 Sodium caseinate 0.5-0.6 Microcalcite brand KM2 22-28 Microwollastonite Mivoll 10-97 4.4-5.6 Diatomite NDP-D-230 5.6-7.0 Plasticizer Hidetal P-4 0.1-0.2 Water 40-44