Flame-retardant external wall thermal insulation material and preparation method thereof

Abstract

The invention discloses a flame-retardant external wall thermal insulation material and a preparation method thereof and belongs to the technical field of building materials. The flame-retardant external wall thermal insulation material is prepared from, by weight, 25-35 parts of sepiolite, 4-16 parts of sodium silicate, 4-16 parts of cinerite, 4-8 parts of quartz sand, 3-9 parts of ash-calcium powder, 0.8-1.2 parts of polyvinyl alcohol, 10-20 parts of water and 5-15 parts of fire retardant. The flame-retardant external wall thermal insulation material has the advantages of being good in flame-retardant effect, thermal insulation effect and heat and sound insulation effect, low in water absorptivity, resistant to low temperature and acid-base property and the like, and the preparation method is simple and suitable for large-scale production.

Description

technical field [0001] The invention relates to a flame-retardant external wall thermal insulation material and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] With the implementation and development of building energy conservation, thermal insulation materials and products have been paid more and more attention by people. However, the currently used materials are not ideal in various properties, especially in terms of heat preservation, acid and alkali resistance, and weather resistance, which cannot meet people's needs. At present, the most commonly used external wall insulation material is polystyrene plastic foam board, and its main material is polystyrene resin. Because of its high transparency, good rigidity and good chemical corrosion resistance, it has been favored by people. However, it has the defects of large specificity, high thermal conductivity, prone to stress cracking, and high cost. Conte...

AI Technical Summary

Problems solved by technology

However, the materials currently used are not ideal in various properties, especially in terms of heat preservation, acid and alkali resistance, and weather resistance, which cannot meet people's needs.

At present, the most commonly used external wall insulation material is polystyrene plastic foam board, and its main material is polystyrene resin. Because of its high transparency, good rigidity and good chemical corrosion resistance, it has been favored by people. However, it has the defects of large specificity, large thermal conductivity, prone to stress cracking, and high cost.