UHMWPE隔膜挤出成型工艺的实验研究  

Experimental Research on Extrusion Molding Process of UHMWPE Separator

作　　者：张文阳 茆汉军 王若彤 王新威 ZHANG Wenyang;MAO Hanjun;WANG Ruotong;WANG Xinwei(Shanghai Research Institute of Chemical Industry Co.,Ltd.,Shanghai 200062,China;State Key Laboratory of Polyolefins and Catalysis,Shanghai 200062,China;Shanghai Key Laboratory of Catalysis Technology for Polyolefins,Shanghai 200062,China;School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200030,China)

机构地区：[1]上海化工研究院有限公司,上海200062 [2]聚烯烃催化技术与高性能材料国家重点实验室,上海200062 [3]上海市聚烯烃催化技术重点实验室,上海200062 [4]上海交通大学机械与动力工程学院,上海200030

出　　处：《上海塑料》2024年第1期16-21,共6页Shanghai Plastics

基　　金：上海市科委“扬帆计划”(21YF1418200)。

摘　　要：研究了挤出成型工艺参数如螺杆转速、螺杆温度等对超高分子质量聚乙烯(UHMWPE)湿法隔膜加工过程中冻胶液压力及预制膜厚度的影响。结果表明:随着螺杆转速的增加,相同时间内冻胶液挤出量增加,导致冻胶液压力增加;挤出膨胀率随剪切速率的增加而增加,从而造成挤出胀大现象更加明显;随着熔融段温度梯度的增加,网前、网后压力及预制膜的厚度增加,制品厚度尺寸稳定性降低。The effects of the extrusion molding process parameters, such as screw speed and screw temperature, on the pressure of the gel and the thickness of the prefabricated film during the wet process of ultra-high molecular weight polyethylene(UHMWPE) separator were studied. The results show that as the screw speed increases, the extrusion amount of the gel liquid increases within the same time, leading to an increase in the pressure of the gel liquid. The extrusion expansion rate increases with the increase in shear rate, resulting in more obvious extrusion expansion phenomenon. As the temperature gradient in the melting section increases, the pressure in front of and behind the screen and the thickness of the prefabricated film increase, and the thickness and dimensional stability of the product decreases.

关 键 词：UHMWPE隔膜 挤出成型工艺 预制膜 挤出胀大 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业] TQ320.663