SU722882A1 - Raw mixture for heat insulating material production - Google Patents

Description

I

This invention relates to building materials and can be used for the manufacture of thermal insulation.

The closest to the technical essence and the achieved effect to this invention is the cf'ya mixture; for the manufacture of thermal insulation, including, wt.%: liquid glass 3-10, outlet 5-12, expanded vermusulite 55-75, expanded clay sand 3-37 ij.

A disadvantage of the known mixture is that when exposed to fire, the expanded vermiculite and expanded clay, melted HCbj, are compacted, increasing the bulk weight, and hence the coefficient of thermal conductivity, and reducing the fire retardant effect during exposure to high temperature.

The purpose of the invention is to increase the fire resistance, decrease the bulk density and the coefficient of thermal conductivity.

Delivered) 1A pell is achieved by the fact that the raw mix, including liquid glass, hardened sol, expanded clay sand

And vermiculite, contains vermiculite, preheated at temperature ZOO-350 C in the following ratio of components, wt.%:

Liquid glass (in terms of dry substance) 2-B

Hardener 3-1О

Expanded clay grit1O-30

Claims (1)

Vermiculite, preheated at a temperature of ZOO-350 ° C52-85 Vermiculite ore, previously heat treated with GGy ZOO350 C, is characterized by the fact that the removal of interlayer water leads to the beginning of the swelling of the material, but the low temperature does not allow it to finish. As a result of further processing of the mixture, vermiculite is rehydrated, but its structure remains loosened, as a result of which we have a positive effect during the use of fire-proof thermal insulation. When exposed to high temperature, the proposed vermiculite ore, having a greater degree of swelling, increases the heat-shielding layer in its volume, absorbing part of the heat and reducing the aggressiveness of the fire. Thermal insulation properties are retained for a longer time due to curing of vermiculite ore. The use of conventional unfired microcite ore does not allow the use of a semi-dry shotcrete fireproofing stack. The essence of% of the Internet is also a new quantitative content of the components. The proposed mass is prepared by mixing the suzogh filler of preheated vermschulite ore at a temperature of 300-35 ° C with expanded clay sand and a hardener. The dry components are mixed with a binder solution (liquid glass at 1.43 g / cm) is produced in the process. gunning inside cement-gun nozzle. The table shows the compositions and basic properties of the material obtained from the proposed mixture 1-3, and the material obtained from the known mixture 4 (change in the physicomechanical properties of the fire-retardant thermal insulation with a sudden increase in temperature to 85 ° C). Cock can be seen from the table, fire-resistant thermal insulation mixtures with ordinary rricprrrypo (C) have almost the same physical and mechanical properties as the known composition. When exposed to r & ture from 7509OOC, vermiculite ore re-compresses with, and the depletion degree of swelling is high, as a result of which the heat-insulating layer increases in volume up to 2-3 times, absorbs part of the heat, reducing the aggressive effect of fire, and improves the heat-insulating property of fire-retardant heat insulation fire resistance is increased to 27%. The best results in thermal conductivity and fire resistance at high TQvinepaType have composition 3, composition 4 has a high thermal conductivity in comparison with experimental compositions has increased dramatically from 0.125 to 0.232 kcal / m-hr. Thus, the described mixture for fire-retardant thermal insulation has a higher thermal insulation properties and fire resistance for more than 3 hours. At the same time, the use of vermiculong ore, heated and heated at 300-350 ° C, allows the semi-dry method to be kept 1X per hour, the Invention reduces consumption iektroenergii topl1goa and the preparation of components since instead vspuchilis) shogo vermiculite ore used verm1psulitova pre natpeTan at ZOO GRO C togla like rspu chenny vo.1K {ikulit izpestno n | a floor) prr 8OO-90OS. Led for an hour of fire resistance of the proposed fire-retardant thermal insulators and warmers guarantees a guarantee of metal structures and, therefore, economic energy is possible (} 1 effect. Invention formula for the manufacture of thermal insulation, including liquid glass, hardener, ceramsite sand and ideal weather insulation; the fact that, in order to increase the fire resistance, decrease the bulk mass and the thermal conductivity coefficient of thermal insulation, it contains vermiculite, preheated at a temperature of 300-35 ° C with it ratio, Liquid steklo2-8 Otverditel3-10 Expanded clay-sand LP Vermiculite, preheated at 52-85 temperatlee 300-35os. Istochnischg SH11 yurmatsii, received in BHUN aHiie under examination 1.Copyright svidetelstrh) № USSR 482415, cl. C O4 B 19/02, 1073 (prototype).