文献类型：期刊文献

中文题名：生物降解柔性PBAT/CNT的导电性能和发泡行为

英文题名：Conductive Property and Foaming Behavior of Biodegradable Flexible PBAT/CNT Composites

作者：何仕成 刘伟 杨余杰

第一作者：何仕成

机构：[1]贵州理工学院材料与冶金工程学院

第一机构：贵州理工学院材料与冶金工程学院

年份：2019

卷号：47

期号：5

起止页码：1-5

中文期刊名：工程塑料应用

外文期刊名：Engineering Plastics Application

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家自然科学基金项目(51703039);大学生创新创业训练计划项目(201714440216,2018520629)

语种：中文

中文关键词：聚己二酸对苯二甲酸丁二醇酯;碳纳米管;导电;发泡;可生物降解

外文关键词：polybutylene adipate terephthalate;carbon nano tube;conductive;foam;biodegradable

摘要：通过熔融共混法和超临界 CO2 发泡技术制备聚己二酸对苯二甲酸丁二酯(PBAT)/碳纳米管(CNT)复合材料及其发泡材料,并对其流变性能、发泡行为和导电性能进行研究。流变性能研究表明,CNT 对 PBAT 的流变性能影响显著,导致 PBAT 的熔体弹性下降。发泡行为研究表明,CNT 含量对泡孔形态影响显著,一方面,CNT 起到泡孔异相成核点作用能够增加泡孔成核密度,但是 CNT 含量过高产生团聚现象导致泡孔密度反而降低;另一方面,CNT 影响熔体弹性,使发泡倍率下降。电性能研究表明,随着 CNT 含量增加,PBAT/CNT 的电阻率最低降低至10 5 Ω·m 数量级,达到导体水平;发泡后 PBAT/CNT 的电阻率进一步降低至 10 ^4 Ω·m 数量级。
Polybutylene adipate terephthalate (PBAT)/carbon nano tube (CNT) composites and foams were prepared by melt-mixing method and supercritical CO2 foaming technology. The rheological property,foaming behavior and conductive property of PBAT/CNT composites and foams were studied. The rheological results implied that the melt elasticity of PBAT/ CNT composites was weaken by adding CNT. Studies on foaming behavior showed that the content of CNT had a signi cant effect on the morphology of foam. On the one hand,CNT could increase the nucleation density of foam holes by acting as the nucleation point of heterogeneous bubbles, but the aggregation phenomenon caused by too high CNT content would reduce the density of foam holes. On the other hand,CNT affected the melt elasticity and the foaming ratio decreased. The electrical results showed that the conductivity of PBAT would reach resistivity level of 10 5 Ω m grade with the increasing of CNT content. However,the resistivity of PBAT/CNT foam decreased to 10 ^4 Ω m grade.