The present invention relates to the technical field of building material production, in particular to a building thermal insulation material and a preparation method thereof. The building thermal insulation material is made of the following raw materials in parts by weight: 20–30 parts of modified polystyrene resin, 6–8 parts of functional additives, 5–7 parts of flame retardant, 6–10 parts of mica powder, 4–6 parts of aluminum phosphate and 10–12 parts of dodecyl dimethyl amine oxide. The building thermal insulation material prepared by the present invention is obtained by crushing and mixing functional additives and flame retardant to obtain a crushed material, preheating and sintering mica powder to obtain a sintered material, finally mixing and kneading modified polystyrene resin, crushed material, sintered material, aluminum phosphate and dodecyl dimethyl amine oxide, and injecting the obtained kneaded product into a twin-screw extruder. The prepared building thermal insulation material can not only effectively reduce the thermal conductivity and improve the thermal insulation effect, but also has excellent flame retardant properties.
Country Code: CN
Application Number: CN202410033228.4
