▎ 摘　　要

NOVELTY - Flexible flame-retardant graphene phase change composite material comprises 5-50 wt.% graphene oxide solution, 50-95 wt.% flame retardant phase change material. USE - Flexible flame-retardant graphene phase change composite material used for manufacturing electronic devices. ADVANTAGE - The flexible flame-retardant graphene phase change composite material has excellent photoelectric and thermal properties, and flexibility character. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing flexible flame-retardant graphene phase change composite material, which involves: (A) preparing graphene oxide solution by modified Hummers method by pacing reactor 1 in the ice water bath; (B) adding 98% of sulfuric acid and potassium nitrate in the reactor 1; (C) stirring to dissolve completely; (D) adding graphite powder and potassium permanganate; (E) heating reactor 2 at 30-40 degrees C for 6-8 hours; (F) dropping de-ionized water into the reactor 1; (G) keeping for 30-40min; (H) taking out the reactor at 70-90 degrees C; (I) dropping hydrogen peroxide solution; (J) standing and layering; (K) pouring the upper layer solution after 12-15h; (L) taking the lower layer solution; (M) centrifuging and washing; (N) dispersing to obtain oxidized graphene solution; (O) preparing flame-retarded phase change material; (P) adding polyethylene glycol, ethyl acetate, 4,4'-diphenylmethane diisocyanate, 2,2-bis(hydroxymethyl)butyric acid and dibutyltin dilaurate into the reactor 2; (Q) reacting the mixture at 40-70 degrees C; (R) adding ethylenediamine into reactor 2; (S) adding triethylamine and 1, 4-butanediol, flame retardant components to continue reaction; (T) stirring the obtained mixture; (U) adding de-ionized water; (V) obtaining inflaming retarding phase change material emulsion; (W) adding graphene oxide solution in inflaming retarding phase change material emulsion at 30-50 degrees C; (X) decompressing and distilling the ethyl acetate; (Y) obtaining the mixed emulsion of the mixed emulsion; and (Z) drying the obtained product.