摘要
为增强增韧再生高密度聚乙烯(RHDPE),探索了不同配比下硅烷偶联剂(SCA)与马来酸酐接枝聚乙烯(PEg-MAH)协同表面改性碳酸钙(CaCO3)与RHDPE复合材料的力学性能,并对其结晶性能进行了研究。结果表明:当RHDPE为75份,CaCO3为25份,无论SCA含量为CaCO3的0.5%、1%或1.5%时,都存在某一种含量的PE-g-MAH能使RHDPE/CaCO3复合材料的拉伸性能与弯曲性能比纯RHDPE有较高提升。随着PE-g-MAH含量的增多,RHDPE/CaCO3复合材料的熔融温度逐渐升高,结晶度逐渐增大。升降温速度加快后会使RHDPE/CaCO3复合材料的熔融温度升高,结晶温度下降,并且引起晶区紊乱,结晶粒径差异大的情况。
In order to reinforce and toughen RHDPE, the mechanical properties of the surface-modified RHDPE/CaCO3 composites synergistically modified by silane coupling agent (SCA) and maleic anhydride grafted polyethylene(PE-g-MAH) at different ratios were investigated, and their crystallization properties were studied. The results show that: when the RHDPE content is 75 phr, and the CaCO3 content is 25 phr, whether the SCA content is 0.5%, 1%, or 1.5% of the CaCO3, there always exist a curtain content of PE-g-MAH, which can greatly increase the tensile properties and flexural strength of RHDPE/CaCO3 composites than those of pure RHDPE. With the increase of PE-g-MAH content, the melting temperature of RHDPE/CaCO3 composites and the crystallinity increase. The melting temperature of RHDPE/CaCO3 increases and the crystallization temperature decreases with the increase of heating and cooling rate, which leads to the disorder of crystal zone and the large difference of crystal size.
作者
吴正环
赵学礼
王权
王睿
董和生
刘思慧
陈阳
叶勇
Wu Zhenghuan;Zhao Xueli;Wang Quan;Wang Rui;Dong Heshen;Liu Sihui;Chen Yang;Ye Yong(National-Local Joint Engineering Laboratory of Intelligent Manufacturing Oriented Automobile Die &Mould,Tianjin 300222,China;School of Mechanic and Engineering,Tianjin University of Technology and Education,Tianjin 300222,China;Key Laboratory of Tianjin Automobile Injection Mold Enterprise,Tianjin 300222,China;Logistics Management Department,Tianjin University of Technology and Education,Tianjin 300222,China)
出处
《塑料科技》
CAS
北大核心
2018年第12期52-57,共6页
Plastics Science and Technology
基金
天津市智能制造重大专项(17ZXZNGX00100)
天津市高校“中青年骨干创新人才培养计划”(RC180202)
天津市教委科研计划项目(2017KJ104,2017KJ109,2017KJ101)
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)
国家级大学生创新创业训练计划项目(GJ201733)
天津职业技术师范大学“me+”创客空间项目(20172102)
关键词
再生高密度聚乙烯
协同表面改性
力学性能
结晶性能
RHDPE
Synergistic surface modified
Mechanical properties
Crystallization properties
