高导电粗旦聚乙烯纤维的制备及性能研究  

Preparation and properties of high-conductivity coarse-denier polyethylene fiber

作　　者：丁丹宁 吕晓洁 梁姣姣 方楚怡 夏于旻[1,2] 王依民[1,2] 王燕萍[1,2] DING Danning;LU Xiaojie;LIANG Jiaojiao;FANG Chuyi;XIA Yumin;WANG Yimin;WANG Yanping(School of Materials Science and Engineering,Donghua University,Shanghai 201620;State Key Laboratory of Fiber Material Modification,Donghua University,Shanghai 201620)

机构地区：[1]东华大学材料科学与工程学院,上海松江201620 [2]东华大学纤维材料改性国家重点实验室,上海松江201620

出　　处：《合成纤维工业》2022年第1期1-6,共6页China Synthetic Fiber Industry

基　　金：中央高校基本科研业务费专项资金资助(2232021G-06)。

摘　　要：以高密度聚乙烯(HDPE)和导电炭黑(CB)为原料,聚离子液体(P(MIMH-AD))为分散剂,利用熔融混合的方法制备导电母粒,并通过单螺杆纺丝机使导电母粒与HDPE切片进行熔融纺丝制得导电HDPE纤维,研究了聚离子液体对CB的分散作用,以及导电HDPE纤维的导电性能和力学性能。结果表明:聚离子液体P(MIMH-AD)不仅在水溶液中可以有效分散CB,在熔融状态下也可以通过π-π的相互作用使CB在导电母粒HDPE/CB/P(MIMH-AD)中均匀分散;制备的导电HDPE初生纤维经拉伸后,断裂强度提高约5倍,达到109 MPa,断裂伸长率达到124%,电导率提高至400.4Ω·m,但仍可以点亮灯泡,力学性能得到提高的同时,具有良好的导电性能。A conductive masterbatch was prepared by melt mixing using high-density polyethylene(HDPE)and conductive carbon black(CB)as raw materials and polyionic liquid(P(MIMH-AD))as dispersant and was melt spun with HDPE chip to produce a conductive HDPE fiber on a single screw extruder.The dispersion of CB by polyionic liquid and the electrical and mechanical properties of conductive HDPE fiber were studied.The results showed that polyionic liquid P(MIMH-AD)can not only effectively disperse CB in aqueous solution,but also uniformly disperse CB in conductive HDPE/CB/P(MIMH-AD)masterbatch throughπ-πinteraction in molten state;and the prepared conductive HDPE primary fiber had good conductivity while the mechanical properties were improved after stretching,i.e.the breaking strength increasing by about 5 time to 109 MPa,the elongation at break up to 124%,and the conductivity increasing to 400.4Ω·m,but it can still light the bulb.

关 键 词：聚乙烯 导电母粒 聚离子液体 炭黑 分散剂 导电性能 

分 类 号：TQ342.61[化学工程—化纤工业]