▎ 摘　　要

NOVELTY - Composite thermal insulation material comprises 5-8 pts. wt. polyimide aerogel, 10-15 pts. wt. cetyl alcohol, 2-5 pts. wt. vitrified microbeads, 10-15 pts. wt. glass fiber reinforced graphene aerogel, 30-40 pts. wt. polyethylene glycol-800, 4-8 pts. wt. lauric acid, 15-18 pts. wt. phosphorus oxychloride, 1-2 pts. wt. foam stabilizer, 100-120 pts. wt. polyether polyol, 25-35 pts. wt. diethanolamine, 0.5-1 pts. wt. triethanolamine, 0.6-1 pts. wt. dibutyltin dilaurate, 0.5-0.8 pts. wt. triethylenediamine, 150-180 pts. wt. polyisocyanate, 100-130 pts. wt. tetrahydrofuran, 50-70 pts. wt. n-hexane and 2-5 pts. wt. distilled water. USE - Used as composite thermal insulation material. ADVANTAGE - The composite thermal insulation material has low thermal conductivity, excellent mechanical property and flame retardant effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing composite thermal insulation material comprising (i) dissolving polyethylene glycol-800, cetyl alcohol and lauric acid in tetrahydrofuran to obtain solution A, (ii) mixing phosphorus oxychloride and n-hexane to obtain solution B, pouring into a constant pressure funnel, rapidly stirring at 45 degrees C and slowly dropping into solution A, then allowing to stand for 1-1.5 hours and rotating evaporating to obtain solution C, (iii) heating the solution C at 90-100 degrees C, adding the polyether polyol under rapid stirring, and reacting for 1.5-2 hours, (iv) adding diethanolamine and stirring for 5-10 minutes, (v) adding triethanolamine, dibutyltin dilaurate, triethylenediamine, foam stabilizer and distilled water, mixing and dispersing for 10-20 minutes to obtain component D, (vi) adding vitrified microbeads at 30 degrees C and stirring for 10-20 minutes to obtain component E, (viii) mixing polyimide aerogel, glass fiber reinforced graphene aerogel and polyisocyanate, and stirring at 30 degrees C to obtain component F, (viii) mixing component E and component F, and stirring at high speed for 30-40 seconds, quickly injecting into the mold, quickly clamping the mold, and placing in the oven at 100-120 degrees C for 4-6 hours, and (ix) open the mold to taking out the sample and removing hard skin surface to obtain final product.