Heat-dissipation waterproof composite lithium ion battery shell material and preparation method thereof

The invention relates to the technical field of battery shell material preparation, and particularly discloses a heat-dissipation waterproof composite lithium ion battery shell material and a preparation method thereof. The heat-dissipation waterproof composite lithium ion battery shell material comprises the following raw material components in parts by weight: 60-80 parts of polypropylene; 10 to20 parts of polyvinylidene fluoride; 10 to 20 parts of polyethylene; 5 to 10 parts of a modified carbon nanotube; 3-5 parts of lubricant. The composite lithium ion battery shell material provided bythe invention has good insulativity, corrosion resistance and heat conduction performance, and also has good waterproof performance. 本发明涉及电池壳体材料制备技术领域，具体公开了一种散热防水复合锂离子电池外壳材料及其制备方法。所述的散热防水复合锂离子电池外壳材料，包含如下重量份的原料组分：聚丙烯60～80份；聚偏氟乙烯10～20份；聚乙烯10～20份；改性碳纳米管5～10份；润滑剂3～5份。本发明所述的复合锂离子电池外壳材料具备良好的绝缘性、耐腐蚀性以及导热性能，同时还具有良好的防水性能。