SU1077859A1 - Composition for extrusion moulding of construction articles - Google Patents

Abstract

COMPOSITION FOR EXTRUSIVE FORMING OF CONSTRUCTION PRODUCTS, including mineral in the living, filler, hydrolyzed polyacrylonitrile, water and a substance from the group: one stripped off of the postpartum bard. methane bolzhka, sodium salt of a copolymer of salicylic acid with formaldehyde, calcium chloride, characterized in that, in order to improve the compressive strength of products, it additionally contains polyacrylamide in the following ratio x 20 tons, 25 wt.% mineral, chewable 5-55 Filler Hydrolyzed 0.2-1.5 polyacrylonitrile Substance from the group: one stripped off of the post-yarn bard, methane mash, 5 sodium salt of salicylic acid copolymer with formhoiddehyde, 0.1-1.8 calcium chloride 0.2-1.5 Polyacrylamide § Else Water but

Description

 K1

00

ate

The invention relates to building materials, namely, compositions for the extrusion molding of products based on mineral materials. A known composition for the manufacture of building products by the method of extrusion-forming, comprising mineral sticking, filler, plasticizer, polyacrylamide and water. The addition of polyacrylamide is introduced into the composition in the amount of 0.255, 0% by weight of dry components Tl3. The closest to the proposed technical essence and the achieved result is the composition t2J for extrusion molding, including the mineral starch; filler; substance from the group: one stripped off of the post-yeast bard, methane mash, sodium salt of the copolymer of salicylic acid with formaldehyde, the product of alkaline hydrolysis of polyacrylonitrile with a samyly degree of 40-80% and a molecular weight of 1-10 - 6-10. A disadvantage of the known solutions is the relatively low compressive strength of the obtained products. The purpose of the invention is to increase the compressive strength of products. This goal is achieved in that the composition for the extrusion molding of building products includes mineral sticking, filler, hydrolyzed polyacrylonitrile, water and vatstvo from groups. Py: evaporated post-harvest bard, methane brew, sodium salt of copolymer of salicylic acid with formaldehyde, calcium chloride, additionally contains polyacrylamide in the following ratio of components / wt.%: Mineral in the living 25-70 Filler 5-55 Hydrolyzed polyacrylonitrile 0.2-1.5 Substance from the group: one stripped off of the post-seasoned bard, methane mash, sodium salt of copolymer of salicylic acid with formaldehyde. Calcium chloride 0.1-1.8 Polyacrylamide 0.2-1.5 Water. Remaining As hydrolyzed polyacrylonitrile and polzujut industrial product GIPAN marks 07 and 1. The mixture for extrusion molding of building products prepared as follows. First, a 2% aqueous solution of polyacrylamide is prepared, for which the polyacrylamide (6-8% concentration) is mixed with an appropriate amount of water. After a uniform mixture is obtained, it is added. Hypan (10-17% aqueous solution) and mix again. Target additives and water are added to the resulting composition. Then the all-dry ingredients in the mixture are thoroughly mixed until smooth and shut with an aqueous solution of the resulting composition. From the prepared mixtures, samples are molded on an extruder, dried to constant weight and tested. Compositions are prepared according to the proposed method and prototype. In tab. Figure 1 shows the mixtures for extrusion molding. Table 2 shows the test results for extrusion molding mixtures. The proposed xjunction provides the resulting products with increased compressive strength, while the quality of the products is not reduced. Table 1

. Mineral stranded: plaster

gypsum cement pozzolanic

Portland cement M400

finely siliceous

70

51

25

25

44

44 Filler: quartz sand - 18 50 20 ash - ablation. TEC 3,4 asbestos fiber - 5 10 fiberglass - 6 cellulose fiber 1, 6 Substance from the group: one stripped off after the season bard - - -. -. o, methane mash 1.8 sodium salt of copolymer of salicylic acid with formaldehyde — 0.1, CaCl-2 —0.1 Water-retaining dobike: polyacrylamide g - - hydrolyzed polyacrylonitrile: hypan-1- - - gypan-07- product with samyleni degree 40 -80% and mol.mae. 1-6-10 1.0 3.0 2.0 0 22.2 21.9 17.9 25.3 22.1 2G, 9 17.9

Continued table. 1 25.3

Claims (1)

COMPOSITION FOR EXTRUSION FORMATION OF BUILDING PRODUCTS, including mineral binder, filler, hydrolyzed polyacrylonitrile, water and a substance from the group: one-off post-yeast bard. methane mash, sodium salt of a copolymer of salicylic acid with formaldehyde, calcium chloride, characterized in that, in order to increase the compressive strength of products, it additionally contains polyacrylamide in the following ratio of components, Mineral binder Filler Hydrolyzed polyacrylonitrile Substance from the group: stripped off yeast methane sodium afterbirth, mash, salt of a copolymer of salicylic acid with formaldehyde, calcium chloride Polyacrylamide Water May.%: 25-70 5-55 0.2-1.5 0.1-1.8 0.2-1.5 The rest h m 00 joint venture