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发明公开
CN105802020A 新能源汽车蓄电池外壳用极性改性聚丙烯及其制备方法 无效 - 驳回

新能源汽车蓄电池外壳用极性改性聚丙烯及其制备方法
摘要：
本发明公开了新能源汽车蓄电池外壳用极性改性聚丙烯及其制备方法，包括由嵌段共聚丙烯、混入至少一种颗粒状物质的间规聚丙烯、无规共聚聚丙烯和乙烯均聚物聚合而成的共聚单体乙烯质量分数为8?12%α晶型聚丙烯以及辅料；以此为原料，在造粒阶段加入重量百分比为0.16?0.36%β晶型成核剂；在混合阶段中增加重量百分比为0.1?0.5%的耐老化剂以及重量百分比为0.2?0.4%的增韧剂。本发明提高了新能源汽车用的蓄电池外壳的耐冲击、抗震的机械性能，同时兼顾并提升其热稳定性能以及抗氧化和耐腐蚀的化学性能，进而增强蓄电池外壳的使用寿命，从而降低了其使用成本。
摘要（英）：

The invention discloses polarity modified polypropylene for a new energy automobile battery jar and a preparation method thereof.The polarity modified polypropylene comprises alpha crystal form polypropylene with the comonomer ethylene mass fraction of 8-12% and auxiliary materials.The alpha crystal form polypropylene is formed by polymerization of block copolymer polypropylene, syndiotactic polypropylene in which at least one kind of granular substance is mixed, polypropylene random copolymer and ethylene homopolymer.A beta crystal form nucleating agent with the weight percentage of 0.16-0.36% is added to the raw materials in the pelleting stage, and an anti-aging agent with the weight percentage of 0.1-0.5% and a flexibilizer with the weight percentage of 0.2-0.4% are added in a mixing stage.The mechanical properties of impact resistance and shock resistance of the new energy automobile battery jar are improved, thermal stability and chemical properties of oxidation resistance and corrosion resistance of the new energy automobile battery jar are considered and improved, the service life of the enhanced battery jar is prolonged, and therefore the using cost is reduced.

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