SU1689333A1 - Putty and method of its preparation - Google Patents

Abstract

The invention relates to building materials and is intended for finishing work in civil and industrial construction. The purpose of the invention is to increase the crack, water and frost resistance, improve workability and appearance. The putty contains, in wt%: butadiene styrene latex 3-8. aqueous solutions of sodium salt of carboxymethylcellulose (on a dry basis) 1.5-3.0 and technical soap (on a dry basis) 0.5-1.0. ethyl or methyl silicate sodium 1.0-3.0. hydrated lime 5-20, phosphogypsum 65-89. The method for preparing the putty is as follows. The phosphogypsum is first mixed with sodium ethyl or methyl silicate to neutralize acidic impurities. Then, slaked lime, aqueous solutions of sodium salt of carboxymethylcellulose and technical soap, butadiene styrene latex and water are added successively to obtain a working consistency. Frost resistance putty 14 cycles, the viability of more than 1 month. 2 sec. f-ly. 2 tab. (Ls

Description

The invention relates to building materials and may find application in civil and industrial construction.

The purpose of the invention is to increase crack resistance, water and frost resistance, as well as to improve the applicability and appearance.

The compositions of putty and physico-mechanical parameters are given in Tables 1 and 2.

The method for preparing the putty is as follows.

Phosphogypsum is loaded into runners and sodium ethyl or methylsiliconate is added (NGL

10 or NGL-11), mix for 10 minutes (until neutralization of acidic impurities). Then slaked lime, aqueous solutions of sodium carboxymethyl cellulose salt and technical soap, butadiene styrene latex are added successively, after which water is added to obtain a working consistency.

A consequence of the high viability, non-shrinkability and workability of the putty obtained is an increase in its workability due to the possibility of using -mechanized application means, i.e. putting shpakO

00

yu so

with gj

Levki thick layer in one move of the mechanism. High water resistance leads to increased frost resistance putty. High whiteness is provided by the white color of the components, which reduces paint consumption or eliminates staining.

Claims (2)

1. Putty, including butadiene styrene latex, aqueous solution of sodium carboxymethyl cellulose and technical soap, hydrated lime, ethyl or methyl silicate of sodium and filler, in that. In order to improve the crack resistance of water and frost resistance, as well as improve the usability and appearance, it contains phosphogypsum as a filler in the following ratio of components, wt.%: Styrene butadiene latex3-8 An aqueous solution of carboxymethylcellulose sodium salt (on a dry basis) 1.5-3.0 Aqueous solution of technical soap (on a dry basis) 0.5-1.0 Hashen lime5-20 Ethyl or Methyl Siliconate Sodium 1-3 Phosphogypsum 65-89 2. A method for preparing putty, including mixing slaked lime, a filler, aqueous solutions of sodium salt of carboxymethyl cellulose and technical soap, styrene latex and ethyl or methyl sodium silicate, characterized in that the precursor phosphogypsum is mixed with ethyl or methyl silicate sodium, then the remaining components are added in the specified sequence and water until the working consistency is reached. table 2 Shrinkage (cracking after hardening), mm Convenience Water resistance, h Appearance Viability Absent in the crack cracking layer in a layer of 2 mm Up to 7 up to 5 up to 3 up to 7 up to 5 up to 3 Does not fold, don t net for spatula, T net for elastic spatula  24 2416 Linen color, smooth surface color, roughness, 8 cycles More than 1 month 60-90 days Note. The frost resistance of the putties is determined according to GOST 10060-87 (for compositions 1-6 in a layer of 5 mm, for a prototype in a layer of 1 mm, since with a greater thickness the network of cracks is formed already during curing).