SU867911A1 - Composition for making thermal insulation - Google Patents

Description

one

The invention relates to the building materials industry and is intended for the thermal protection of building structures and buildings.

A known composition for the manufacture of heat insulation, including weight,%: expanded perlite sand 30-65; liquid glass 30-35; extraction phosphoric acid with 30% PiOy 2.5-10; alkyl silicate 1.0-10, - water 5-30 in excess of 100%.

A disadvantage of the known composition is low strength and long heat treatment time.

The closest to the proposed invention in technical essence and the achieved result is a composition for the manufacture of thermal insulation, including, wt.%: Vermiculite 65-92; liquid glass 5-30; organic binder 1.3-2796 L2.

A disadvantage of the known composition is that the heat insulation

from it under heating conditions up to 1000–1200 ° C.

The purpose of the invention is to maintain the strength of thermal insulation under heating conditions up to 1000-J200C.

This goal is achieved in that the composition for the manufacture of thermal insulation, including vermico lit, liquid glass and an additive, contains as an additive silicate wastes of petrochemical synthesis and sodium alkyl silicate in the following ratio of components, wt.%:

15

48-68

Vermiculite Liquid Glass

23-37

7-9 Water

Silicate waste nefte30 chemical

1-3 synthesis

Alkyl Siliconate

1-3 sodium 3 Silicate wastes of petrochemical synthesis are characterized by the presence of the following components, wt.%: SlOa 75-78 + Ca.0 21.7-25 0.3 High content of finely dispersed SJO (j (over 50%) in silicate wastes of petrochemical synthesis leads to an increase in the modularity of liquid glass and ensures the obtaining of a clear stone-like material in the process of heat treatment of the product at 15 170 ° C, which contributes to the increase in the strength of thermal insula- tion.The content in the proposed composition of mineral binder and mineral additive — hardener t manufacture thermal insulation that retains strength under conditions of heating to lOOO-IZOO C and does not emit toxic substances in the process of thermal destruction.In addition, the introduction of waste from petrochemical synthesis in the form of a fine mineral filler curing liquid glass x heating reduces the moisture content, which speeds up the curing process. The thermal insulation of the proposed composition is made as follows: silicate wastes of petrochemical synthesis are added to the vermiculite all this but is mixed with liquid glass, after which water was added and alkylsilikonat GYUK-94). The entire composition is thoroughly mixed and it fills the metal mold, which is installed under the press. The product is pulled out for one hour. Specific formulations of the proposed and known composition for the manufacture of thermal insulation are shown in Table 1, The physicotechnical indicators of thermal insulation from the proposed composition and the known composition are listed in Table 2,. It follows from Table 2 that the heat insulation from the proposed composition retains its flexural strength after heating to 1000-1200 s, whereas the thermal insulation of the compositions of the prototype almost loses its flexural strength after heating to 1000-1200 s.

The content of components, wt.%

Offered

23

22 33 1 1

37

33

65-92 5-30

Table 1

8 7 9 Known

1.3-27.6

800 900 850

350-400

Claims (2)

Claims of the invention. A composition for the manufacture of thermal insulation including vermica lit, liquid glass and an additive, characterized in that, in order to maintain strength in the conditions of heating to 1000-1200 0, it contains. as an additive, silicate wastes of petrochemical synthesis of sodium alkylsilconate with the following ratio of components, wt.% Liquid glass23-37 table 2 Offered V 38 50 45. Known 45-55 7-9 Water Silicate wastes of petrochemical 1-3 synthesis of Alkyl Siliconate. 1-3 soda Sources of information taken into account in the examination 1 "USSR Author's Certificate No. 351804, cl. From 04 To 19/04, 1972. 2. Patent of the USSR No. 608483, cl. From 04 To 43/00, 1978.