SU1065388A1 - Composition for making heat insulating material - Google Patents

Abstract

COMPOSITION FOR MAKING HEAT-INSULATING T. TERIALA, INCLUSIVE expanded perlite, hydrated lime, sodium hydroxide and water, so that, in order to increase the possibility of repeated use of the product and reduce the thermal conductivity, it also contains inorganic fibers in the following ratio components, wt.%: Hydrate lime 6-15 Sodium hydroxide 2-4 Water 23-35 Inorganic fibers 2-20 Expanded perlite Rest

Description

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. The invention relates to the permeability of building materials. The known box is du1 thermal insulation C, containing expanded perlite sand, hydrated lime, sodium hydroxide and water in the following ratio, wt.%: Expanded perlite sand55-57 Hydrated lime 6-7 Sodium hydroxide 3-4 Water V 33-35 Disadvantages of the famous The method of use is low temperature and insufficient bending strength.

The closest in technical essence and the achieved result to the invention is the composition of the heat insulating material G2}, content, wt.%:

Expanded perlite sand 67.2-70.8 Lime8.3-11.2

Water l, 7-3jO

Sodium hydroxide 18.6-19.2 A disadvantage of the known composition is the low strength and unsatisfactory reusability.

The aim of the invention is to increase the possibility and reuse of the product and to reduce the thermal conductivity.

This goal is achieved by the fact that the composition for the manufacture of thermal insulation material, which included expanded perlite, hydrated sodium hydroxide, and water, additionally contains inorganic fibers in the following ratio, wt.%:

Hydrated lime 6-15

Sodium hydroxide 2-4

Water 23-35.

Inorganic

fibers2-20

Expanded perlite Else

Asbestos, mineral wool, kaolin fiber or their mixture is used as a fibrous material.

The technology of preparation of the composition and products based on it is carried out as follows. Dry mixing of the components is carried out: expanded perlite, dissolving (or cutting fiber, lime is then added; sodium hydroxide solution in water and again mixed in a paddle mixer. The mass is molded by pressing or padding. The hardening of the masses occurs in 300-600 gf

In the manufacture of products of the proposed composition were used the following mat1 and: al1.

Expanded perlite sand complies with GOST 10832-74, standard with bulk volume; total weight 70-80 kg / m

Hydrate lime (fluff) corresponds to GOST 9179-70 Lime building.

The content of active CaO in terms of dry matter is not less than 67%, moisture content, not more than 5%, dispersity of particles on sieves with a grid of 063-2, 008-10.

. Sodium hydroxide corresponds to GOST 2263-75.

Sodium hydroxide, technical grade RD-2, is used in solution solutions with a density of 1.032.

Chrysotile asbestos (GOST 12871-6 used in the brand M-6-30.

Mineral fiber (GOST 4640-76 u name brand 75 with an average fiber diameter of 6 microns..

Kaolin fiber was applied by bulk weight 80 kg / kA

By. The technology described by BsatHe was made of products whose compositions were given in Table 1-1. 1, and pe, the test results characterizing the properties of the material being prepared are listed in Table. 2. ..- persons a. one

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10 10 3.0 19

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Claims (1)

COMPOSITION FOR THE PRODUCTION OF HEAT-INSULATING MATERIAL, including expanded perlite, hydrated lime, sodium hydroxide and water, which is based on the fact that, in order to increase the possibility of repeated use of the product and reduce the thermal conductivity, it additionally contains inorganic fibers in the following ratio components, May.%: Hydrated lime 6-15 Sodium hydroxide 2-4 Water 23-35 Inorganic lokna 2-20 Expanded Perlite Rest wo GO oo oo 55-57 6-7 3-4 33-35 67.2-70.8 8.3-11.2 1.7-3.0 18.6-19.2 As fibrous material, asbestos, mineral wool, kaolin fiber or a mixture thereof is used. The technology for preparing the composition and products based on it is carried out as follows. Dry mixing of the components is carried out: expanded perlite, loose (or cut) fiber, lime, then a solution of sodium hydroxide in water is added and again mixed in a paddle mixer. The mass is molded by compression or packing. Mass hardening occurs at 300-600 ° C. In the manufacture of products of the proposed composition, the following materials were used. Expanded perlite sand complies with GOST 10832-74, ordinary with a bulk density of 70-80 kg / m. Hydrated lime (fluff) complies with GOST 9179-70 Building lime. The content of active CaO in terms of dry matter is not less than 67%, humidity not more than 5%, particle size dispersion on sieves with a mesh No. 063-2, No. 008-10. Sodium hydroxide corresponds to GOST 2263-75. rt RD-2 was used in solution with 1.032 g / cmg. Chrysotile asbestos (GOST was used grade M-6-30. Mineral fiber (GOST