Prepreg for power battery pack and preparation method of prepreg

The embodiment of the invention discloses a prepreg for a power battery pack and a preparation method of the prepreg. The prepreg is an epoxy resin and saturated polyester resin composition and is prepared from epoxy resin, saturated polyester resin, a latent curing agent, a flame retardant, an accelerator and a solvent; the flame retardant is selected from one or more of a phosphorus-based flameretardant, a phosphorus-nitrogen-based flame retardant and an inorganic flame retardant, and the solvent is selected from one or more of acetone, ethyl acetate, methyl acetate, butyl acetate, butanone, toluene and xylene. The epoxy resin and saturated polyester resin composition for the prepreg is suitable for coating modes of smooth rolls and comma scrapers, and the storage period at normal temperature is long. 本发明实施例公开了一种动力电池包用预浸料及其制备方法。一种预浸胶为环氧树脂及饱和聚酯树脂组合物，其制备的原材料包括：环氧树脂、饱和聚酯树脂、潜伏性固化剂、阻燃剂、促进剂及溶剂；其中，阻燃剂是选自磷系阻燃剂、磷氮系阻燃剂、无机阻燃剂中的一种或多种，溶剂是选自丙酮、乙酸乙酯、乙酸甲酯、乙酸丁酯、丁酮、甲苯、二甲苯中的一种或多种。通过上述方式，本发明实施例的预浸胶用环氧树脂及饱和聚酯树脂组合物适合光辊以及逗号刮刀的涂布方