UHMWPE锂电池隔膜树脂微粉气流分级的试验研究  

Experimental Study on Air Flow Classification of UHMWPE Lithium Battery Diaphragm Resin Micro-powder

作　　者：赵英杰 张玉梅 刘奇 ZHAO Yingjie;ZHANG Yumei;LIU Qi

机构地区：[1]上海化工研究院有限公司

出　　处：《化工装备技术》2019年第4期1-5,共5页Chemical Equipment Technology

摘　　要：超高分子量聚乙烯(UHMWPE)锂电池隔膜专用树脂微粉受生产工艺的限制,因静电原因其产品中含有大量团聚粗颗粒,降低了总体的粒度指标,得到的微粉颗粒较粗且分布范围较宽。利用自制WTPC-300型高速气流分级机对UHMWPE微粉进行分级试验,分别考察分级轮转速、分级风速、二次风流量等操作参数对分级细粉平均粒径d50和150μm粒径以下细粉收率的影响。研究结果表明:分级轮转速、分级风速、二次风流量变化对分级细粉平均粒径d50和150μm粒径以下细粉收率的影响都存在中间最优值,即分级轮转速为3300r/s,二次风流量为30m3/h,分级风速为11.5m/s时分级得到的UHMWPE微粉最细,相关粒径指标优于进口产品。UHMWPE resin micro-powder for lithium battery diaphragm was limited by production process.Due to static electricity, the product contained a large amount of agglomerated coarse particles to reduce the overall particle size index, and the obtained fine powder particles were coarse and wide in distribution range. UHMWPE micro-powder was classified by self-made WTPC-300 high-speed air classifier. The effects of operating parameters such as grading rotation rate, grading wind speed and secondary air flow rate on the average particle size of the grading micro-powder d50 and the micro-powder yield below 150 μm were investigated. The results showed that the variation of the grading rotation rate, the grading wind speed and the secondary air flow rate had an intermediate optimum value for the average particle size of the grading micro-powder d50 and the micro-powder yield below150 μm. When the grading rotation rate was 3 300 r/s, the secondary air flow rate was 30 m3/h, and the grading wind speed was 11.5 m/s, the UHMWPE micro-powder obtained by classification was the finest, and the relevant particle size index was better than imported products.

关 键 词：UHMWPE微粉 气流分级机 转速 二次风流量 分级风速 

分 类 号：TQ051.8[化学工程]