基于微纳层叠技术的PVC分子取向对增塑剂迁移的影响  

Effect of PVC Molecular Orientation on Plasticizer Migration Based on Micro-nano Lamination Technology

作　　者：周星[1] 焦志伟[1] 李长金[1] 谢鹏程[1] 

机构地区：[1]北京化工大学机电工程学院有机无机复合材料国家重点实验室,北京100029

出　　处：《中国塑料》2015年第5期75-79,共5页China Plastics

基　　金：国家自然科学基金(21174015)

摘　　要：利用自制微纳层叠装置在挤出过程中对聚合物薄层产生的持续剪切作用,分别制备了3种具有不同取向程度的聚氯乙烯(PVC)片材,并通过扫描电子显微镜、万能试验机等对PVC片材的性能进行了分析和表征。结果表明,与不经层叠器挤出的试样相比,经2节层叠器和4节层叠器的片材沿挤出方向的拉伸强度分别提高了5.72%和10.18%,密度分别提高了2.81%和4.35%,挥发损失率分别降低了13.12%和37.65%。Three kinds of PVC sheets with different orientation degree were prepared using a selfmade micro-nano lamination device in this paper. The properties of the sheets had been characterized using scanning electron microscope,universal testing machine,density and thermal volatilization loss rate. Mechanical properties,density and heat loss rate test showed that compared with PVC sheets prepared without lamination device,the tensile strength along the extrusion direction of the sheets prepared with 2and 4lamination devices had increased by 5.72%and 10.18 %,the density had increased by 2.81 %and 4.35 %,the volatilization loss rate had decreased by 13.12 %and 37.65 %,respectively.

关 键 词：聚氯乙烯 微纳层叠挤出 分子取向 增塑剂 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]