Nano-silica airgel/vitrified microbeads composite thermal insulation mortar

Abstract

The invention discloses nano-silicon aerogel / vitrified microball composite thermal-insulation mortar, which consists of the following raw materials by weight parts: 70-80 parts of silicate cement, 15-20 parts of modified fly ash, 10-20 parts of modified diatomaceous earth, 10-15 parts of coarse whiting, 10-20 parts of nano-silicon aerogel, 10-20 parts of vitrified microballs, 0.5-1 part of redispersible latex powder, 0.5-1 part of cellulose ether, 0.2-0.3 parts of wood fibers and 0.1-0.2 parts of polyimide fibers. The thermal-insulation mortar prepared in the invention has the advantages that the thermal-insulation property, the fire resistance and the construction performance are excellent, the intensity is high, the weather resistance is good, the mortar is environmentally friendly, etc. The mortar is especially suitable for the composite thermal insulation of inner and outer wall bodies in various brick-concrete structures, frame structures and shear wall structures and for the fire proofing and the thermal insulation of public facilities such as basements, garages, fire fighting accesses and has great market space and development prospect in the construction energy-saving application field.

Description

technical field [0001] The invention relates to a building material, in particular to a thermal insulation mortar which uses nano silicon airgel and vitrified microspheres to replace traditional thermal insulation aggregates such as expanded perlite. Background technique [0002] At present, the inorganic thermal insulation mortars used in construction engineering include the following types: expanded perlite thermal insulation mortar, closed-cell perlite thermal insulation mortar, expanded perlite thermal insulation mortar, pottery sand thermal insulation mortar, etc., whether the above inorganic thermal insulation mortar is used for external walls Both internal and external thermal insulation have serious problems, such as high thermal conductivity, easy cracking and hollowing, etc., which affect the overall appearance and thermal insulation effect, and some even fall off the finish layer, resulting in casualties and accidents, and the social impact is very poor. The main ...

AI Technical Summary

Problems solved by technology

An increase in thickness is unsafe, especially for high-rise buildings; second, it increases the cost of the building and affects the promotion and use of inorganic thermal insulation mortar in the market

For organic thermal insulation materials, although their thermal conductivity is very low, their strength is not high, and there are problems in weather resistance, fire resistance, environmental protection, etc.

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