SU1031938A1 - Binder - Google Patents

Abstract

A BINDING comprising semi-aquatic gypsum, an organic additive and water, characterized by. that, in order to increase plasticity and decrease the prod- uct of drying capacity, it is as good as a soda, and has 1-propoxy-3-allyloxypropanol-2 vinyl ester at the following ratios of components, wt.%: Semi-aqueous, 3 gypsum. Vinyl ester of 1-propoxn-3-allyl hydroxypropanol-2 1.5-2.0 Water Rest

Description

WITH

with

oo with

The invention relates to the building materials industry and can be used in the manufacture of various gypsum building products for panels and slabs for partitions, sheets for wall cladding and floors, wall stones / architectural and decorative products.

Known gypsum mixes, including semi-final gypsum, an organic additive copolymer of vinyl alcohol with salts of carboxylic acids 0.05–0.25 wt.% Carbamide resin 0.95–4.75 wt.% And water 1,

However, it takes considerable time to dry products obtained from these mixtures, and the molded products have insufficient strength.

The closest to the proposed technical dryness and the achieved result is a stinging, including gypsum 71 / 65-73.37 wt.%, A complex plasticizing organic additive (aniline 0.1-0.74, turpentine 0.01-0.60 ) Water 2.

A disadvantage to the gang is an insufficient increase in ductility.

In addition, the use of aniline and turpentine requires special precautions and special sealed chemical apparatuses, since aniline refers to flammable and explosive, g, volatile, potent substances, and the compatibility of turpentine and aniline is not high enough. preliminary preparation of the aqueous-organic suspension, which significantly complicates the process of mixture preparation,

one - ---

The purpose of the invention is to increase the plasticity and reduce the duration of drying.

This goal is achieved by the fact that 5, in a sticking, including hemihydrate gypsum, organic additive and water / as an organic additive, contains 1-propoxy-3-allyloxypropanol-2 vinyl ester with the following ratio of components, wt.%: Semi-aquatic

gypsum 70,9-71,3

Vinyl ester of 1-propoxy-3-allyl xyprrpanol-2 1,

WaterEverything

The 1-propoxy-3-allyloxypropanol-2 vinyl ester is characterized by the formula

C.jH OCHo-CH-CH, OCH ,,

I

Och CH2

Primer p. In order to determine the optimal amount of the additive, the content of the additive is prepared for the ones that differ from each other. Mixtures are prepared 30 as follows. First, water and the additive are poured into the mixer, and then the resulting solution is mixed with semi-gypsum and mixed for 1-2 minutes.

In tab. 1 shows the compositions in the recipient and its physico-mechanical properties,.

Gypsum, water

Gypsum, Water Gypsum, Water,

Prototype

Aniline +0.1 Turpentine 0.1 0.49

0.48

12

5.9

ten

0.49

6.0

12

eleven

18

6.0

8, .5

310319384

Tests have shown that using a 35% increase in plasticity and increasing the composition of the proposed composition by 20%, while maintaining strength, can shorten the duration of the characteristics.

Claims (1)

BINDER, including semi-aquatic gypsum, an organic additive and water, which distinguishes me. that, in order to increase the ductility and reduce the drying time, it contains 1-propoxy-3-allyl oxypropanol a-2 vinyl ester as an organic additive in the following ratios of components, wt.%: Semi-aquatic gypsum 70.9—71.3 Vinyl ether 1-pro poxy-3-allyl - oxypropa- e nola - 2 1.5-2.0 8 Water Rest ώ U ™ 1031938 .1031938