▎ 摘　　要

NOVELTY - Composition comprises 25-90 wt.% alkane phase change material with the phase change temperature of 20-60℃, 5-15 wt.% thermally conductive filler, 5-25 wt.% flame retardants, such as aluminum hypophosphite, an ammonium polyphosphate and pentaerythritol compound, a phosphorus-nitrogen nano composite flame retardant and dipentaerythritol, 0-30 wt.% resin-based material, 0-2 wt.% antioxidant and 0-3 wt.% glass fibers. USE - Composition for preparing high efficiency flame retardant phase change thermal management composite material. ADVANTAGE - The composite material has excellent mechanical property, high heat conductivity coefficient, high encapsulation efficiency on the phase change material, no leakage after phase change, effectively regulate and control the temperature of the battery pack, enables to control the temperature of the battery pack within the optimal working temperature range, and improves the service life and the reliability of the battery pack. The battery pack enables to reach the highest level V-0 of UL 94 standard, has excellent flame retardant property, and improves the safety of the battery pack. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: A high efficiency flame retardant phase change thermal management composite material, is prepared by using the composition. A method for preparing efficient flame-retardant phase-change heat management composite material, which involves: (a) heating and melting the phase change material, (b) mixing the melted phase-change material with a heat-conducting filler, cooling and sieving, (c) mixing the mixed material with a flame retardant, a resin-based material and an antioxidant, and (d) mixing the mixed material with glass fiber, and then extruding and granulating to obtain the efficient flame-retardant phase change thermal management composite material.