锂电池隔膜专用聚丙烯生产过程的研究  

Study on Production Process of Special Polypropylene for Separators of Lithium Battery

作　　者：付莹 付传玉 张彬 王楠 刘忠全 赵胤衡 庄松 李峰荣 殷志华 FU Ying;FU Chuan-yu;ZHANG Bin;WANG Nan;LIU Zhong-quan;ZHAO Yin-heng;ZHUANG Song;LI Feng-rong;YIN Zhi-hua(North Huajin Chemical Industries Group Corporation,Panjin 124021,China)

机构地区：[1]北方华锦化学工业股份有限公司,辽宁盘锦124021

出　　处：《塑料工业》2020年第11期31-34,共4页China Plastics Industry

摘　　要：采用三井油化Hypol工艺生产出锂电池隔膜专用聚丙烯(PP2#),探究生产过程中不同活性催化剂体系、稳定剂体系、外给电子体种类和用量等因素对PP产品灰分、等规度和分子量分布等性能的影响。结果表明,采用活性高的催化剂体系和强抗氧性稳定剂体系均能显著降低PP灰分;外给电子体为二环戊基二甲氧基硅烷(DCPMS)时,PP等规度较大,且随着其在催化剂体系中的物质的量比的增加,等规度逐渐增大;较宽的分子量分布、熔体质量流动速率(MFR)波动幅度较小的锂电池隔膜专用料具有更好的加工性能和成孔性。Polypropylene(PP)for lithium battery membrane was produced by Mitsui Petrochemical Hypol process.The effects of different active catalyst systems,stabilizer systems,types and amounts of external donors on the ash content,isotacticity and molecular weight distribution of polypropylene products were investigated.The results show that the use of the highly active catalyst system and the strong antioxidant stabilizer system can significantly reduce PP ash.When the external electron donor is dicyclopentyl dimethoxysilane(DCPMS),the PP isotacticity is larger,and with the increase of its molar mass ratio in the catalyst system,the isotacticity gradually increases.The lithium battery membrane with wider molecular weight distribution and smaller melt mass flow rate(MFR)fluctuation has better processability and pore forming property.

关 键 词：锂电池隔膜 HYPOL工艺 聚丙烯 催化剂体系 稳定剂体系 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]