摘要
制备了硅烷偶联剂(SCA)与马来酸酐接枝聚乙烯(MAH-g-PE)复合改性的3种不同尺度的杨木纤维(PF)增强增韧再生高密度聚乙烯(RHDPE)复合材料,并对比了三种复合材料的力学性能与非等温结晶性能。结果显示,粒径为80目的协同改性PF可明显提升未改性的PF/RHDPE复合材料的拉伸强度、弯曲模量、以及冲击强度;复合材料的相对结晶度受降温速率和粒径共同作用,且前者作用较为重要;此外,Ozawa指数n将复合材料的结晶过程划分为一维以内和三维以内两个生长阶段。
In this work,three dimensions of poplar fiber(PF)reinforced and toughened recycled high-density polyethylene(RHDPE)composites which surface modified by both silane coupling agent(SCA)and maleic anhydride grafted polyethylene(MAH-g-PE)were prepared.Furthermore,the mechanical and non-isothermal crystallization kinetics properties of these samples were contrasted.The results show that the synergistic modified PF with 80 mesh could improve the tensile strength,flexure modules,and impact strength of pure PF/RHDPE composites.The relative crystallinity of composites are dominated by both cooling rates and PF dimensions,the former is more important.In addition,Ozawa index divides the crystallinity processing of PF/RHDPE into two phases of 1-dimension growing and 3-dimension growing.
作者
吴正环
叶勇
陈阳
董和生
吾兰
WU Zheng-huan;YE Yong;CHEN Yang;DONG He-sheng;WU Lan(School of Mechanic and Engineering,Tianjin University of Technology and Education,Tianjin 300222,China;National-Local Joint Engineering Laboratory of Intelligent Manufacturing Oriented Automobile Die&Mould,Tianjin 300222,China;National mold product quality supervision&inspection center,Dongguan 523841,China;The Key Laboratory of Polymer Processing Engineering of Ministry of Education,National Engineering ResearchCenter of Novel Equipment of Polymer Processing,South China University of Technology,Guangzhou 510640,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2019年第A01期67-72,共6页
China Plastics Industry
基金
天津职业技术师范大学“me+”创客空间项目(20172102)
大学生创新创业训练计划项目(201710066035)
天津市教委科研计划项目(2017KJ104,2017KJ101,2017KJ109)
天津高校科技发展基金项目(JWK1711)
天津职业技术师范大学研究发展项目(XJKC031420,XJKC031451,KJ11-06,KJY14-03)
关键词
再生高密度聚乙烯
协同改性
多尺度杨木纤维
力学性能
非等温结晶动力学
Recycled High Density Polyethylene
Synergistic Modification
Multi-Scale Poplar Fiber
Mechanical Properties
Non-isothermal Crystallization Kinetics
