SU537975A1 - Raw mix for the manufacture of thermal insulation products - Google Patents

Description

The invention relates to the compositions for the manufacture of lightweight heat insulating products.

A raw mix is known, including fly ash and lime Jl}. A disadvantage of the known mixture is slow imitation.

Also known is the raw material mixture for the manufacture of heat-insulating products, including cement, fly ash, and polystyrene foam granules. 2 This mixture is the closest to the technical essence and the achieved result.

The disadvantage of the known raw mix; is an increase in mass, which leads to an increase in its bulk density and increases the coefficient of thermal conductivity.

The aim of the invention is to reduce thermal conductivity.

The goal is achieved by the fact that the raw material mixture additionally contains Zh1P-carbide lime-fuzz and aluminum powder in the following ratio of components (in wt.%):

Fly gold cement

80-40

Pranula foam polystyrene 9, 4 Carbidna lime-fluff Aluminum powder ,, ,,

ZOR-40 0.4-0.6

In the manufacture of the raw material mixture, puppies and ash-yos with a specific surface area of 3600-4900 cm / g are supplied together with water and expanded polystyrene granules in a rotary mixer (450 rpm / min) After 2-3 itoH 5 displacements, an aluminum-: additive is introduced in the form of a water-sulphonous sub-suspension. In the mixer, the raw mixture is additionally activated, which is positive, but affects its porosity (equal distribution of pores) and intensity swelling. Water content: 102-130% by weight of dry ingredients.

Moved mass is poured into mold. which covers the open surface: with polyethylene and the mass of the mass

it is kept in molds, kept for 2-3 hours and subjected to heat treatment with saturated steam at atmospheric pressure according to the 3 + 5 -n 2 s regime

3-4 hours of isotherm at

about 100 With dry heated air.

Physico-technical characteristics of thermal insulation materials prepared from raw materials using this method are presented in Table.

The introduction of carded lime powder and aluminum powder into the raw material mixture reduces the bulk density, increases

four

porosity of products, and, consequently, reduces the coefficient of heat conduction. The materials drank well; with allowable loads, they deform without cracks, have a negligible final moisture.

Products in the form of heat-insulating plates and blocks can be used as deposits for stack panels, floor panels, j; jiHT combined roofing, as well as other types of insulation with a temperature not higher than 110 ° C.

2O30 19.4 30

1535 14.5 35

10409.6 40

Claims (2)

1.Submitted for Germany, cl. 8О В 20 / О1 / С04В 23 / О4 /, № 2229698, publ. 01/10/74 2. Authors certificate of the USSR, № .334199, C04 15/02 with priority from 31.07,70 / prototype /.