▎ 摘　　要

NOVELTY - Three-dimension graphene framework composite phase change material comprises 5-95 wt.% organic phase change material and balance amount of graphene, where the graphene is self-assembled to obtain a three-dimension framework structure of interconnected organic phase change material, and organic phase change material is fatty alcohol or fatty acid. USE - Three-dimension graphene framework composite phase change material. ADVANTAGE - The three-dimension graphene framework composite phase change material is prepared in simple and cost-effective manner, has heat storage capacity, solves the problem of leakage of organic phase change material effectively, and improves thermal conductivity of organic phase change material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing three-dimension graphene framework composite phase change material, which involves: (A) mixing 1.2g graphite with 60ml 98% concentrated sulfuric acid and then reacting the mixed material with a mixed solution of 2g potassium persulfate and 2g phosphorus pentoxide at 85 degrees C for 4.5 hours; (B) diluting reaction liquid with 400 mL deionized water and then filtering, washing and drying the diluted material at 60 degrees C to obtain graphene oxide; (C) adding 100mg graphene oxide with 50mL 98% concentrated sulfuric acid and 2g potassium permanganate and then reacting the obtained material for 2 hours; (D) adding the reacted material with 80mL deionized water for reacting for 0.5 hours at 95 degrees C and then adding the reacted material with 120 mL deionized water and 30% hydrogen peroxide solution to perform termination reaction; (E) centrifuging, washing and drying the reacted material at 30-40 degrees C and then washing the dried material with hydrochloric acid solution and deionized water; (F) dispersing the washed material with 100 mL deionized water and then adding the dispersed material with 0.1g ascorbic acid; (G) stirring the obtained material for 24 hour and then adding the stirred material with to water or cyclohexane as a solvent; (H) mixing the obtained material and then stirring and heating the mixed material for 5 hours to evaporate solvent; and (I) drying the stirred material to obtain the desired product. An INDEPENDENT CLAIM is included for a method for preparing three-dimension graphene framework composite phase change material, which involves: (A) mixing 1.2g graphite with 60ml 98% concentrated sulfuric acid and then reacting the mixed material with a mixed solution of 2g potassium persulfate and 2g phosphorus pentoxide at 85 degrees C for 4.5 hours; (B) diluting reaction liquid with 400 mL deionized water and then filtering, washing and drying the diluted material at 60 degrees C to obtain graphene oxide; (C) adding 100mg graphene oxide with 50mL 98% concentrated sulfuric acid and 2g potassium permanganate and then reacting the obtained material for 2 hours; (D) adding the reacted material with 80mL deionized water for reacting for 0.5 hours at 95 degrees C and then adding the reacted material with 120 mL deionized water and 30% hydrogen peroxide solution to perform termination reaction; (E) centrifuging, washing and drying the reacted material at 30-40 degrees C and then washing the dried material with hydrochloric acid solution and deionized water; (F) dispersing the washed material with 100 mL deionized water and then adding the dispersed material with 0.1g ascorbic acid; (G) stirring the obtained material for 24 hour and then adding the stirred material with to water or cyclohexane as a solvent; (H) mixing the obtained material and then stirring and heating the mixed material for 5 hours to evaporate solvent; and (I) drying the stirred material to obtain the desired product.