文献类型：期刊文献

中文题名：环烷油对PP/EPDM动态硫化热塑性弹性体的影响

英文题名：Effects of Naphthenic Oil on PP/EPDM Dynamic Vulcanized Thermoplastic Elastomer

作者：周登凤 林靖淞 罗煜 周颖 郭建兵 何玮頔

第一作者：周登凤

机构：[1]贵州理工学院贵州省特种功能材料2011协同创新中心;[2]贵州理工学院贵州省轻金属材料制备技术重点实验室;[3]国家复合改性聚合物材料工程技术研究中心

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：2

起止页码：131-137

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：贵州省科技计划项目{黔科合基础[2018]1087号};贵阳市白云区科技计划项目{白科合[2017]66号;白科合[2018]10号};大学生创新训练项目

语种：中文

中文关键词：环烷油;三元乙丙橡胶;聚丙烯;动态硫化热塑性弹性体;结晶;动态力学性能;流变性能

外文关键词：naphthenic oil;ethylene propylene diene monomer rubber;polypropylene;dynamic vulcanized thermoplastic elastomer;crystallization;dynamic mechanics;rheological behavior

摘要：运用动态硫化法制备聚丙烯(PP)/三元乙丙橡胶(EPDM)动态硫化热塑性弹性体(TPV),研究了EPDM含量对TPV性能的影响,发现PP/EPDM质量比为60/40时,TPV的拉伸性能达到最大,在此优化配比下研究了环烷油充油前后TPV拉伸性能、结晶性能、热稳定性能、动态力学性能及流变性能的变化规律。结果表明,环烷油的加入使得PP/EPDM拉伸强度下降,断裂伸长率增加;环烷油阻碍TPV中PP相的结晶,其结晶、熔融温度及相应焓值在充油过后都有所下降;环烷油降低了TPV的热降解速率,且使TPV中EPDM相和PP相分子链的玻璃化转变温度(T_g)降低,其中EPDM相的T_g降低更明显,同时熔融状态下TPV的复数黏度、储能模量和损耗模量下降,表明熔融状态TPV中聚合物分子链运动能力增加,分子链内摩擦减小,加工性能得到提高。
Polypropylene(PP)/ethylene propylene diene monomer rubber(EPDM)dynamic vulcanized thermoplastic elastomer(TPV)was prepared by dynamic vulcanization method,the effects of EPDM content on the properties of TPV were studied,it is found that when the mass ratio of PP/EPDM is 60/40,the tensile properties of TPV reach maximum.Under the optimized proportioning,the changes of tensile and crystallization properties,thermal stability,dynamic mechanics and rheological behaviors of the TPV filled or unfilled with naphthenic oil were studied.The results show that,addition of naphthenic oil makes the tensile strength of the TPV decrease but elongation at break increase.Naphthenic oil can inhibit the crystallization of PP in the TPV,which leads to declines of the values of crystalline and melting temperature including corresponding enthalpy of the TPV.Naphthenic oil decrease the thermal degradation rate of the TPV and the glass transition temperature(Tg)of EPDM or PP molecular chains in the TPV,the Tg of the EPDM decreases more greatly.The value of complex viscosity,storage and loss modulus of the TPV decrease in the molten state after filling the oil,which means,the movement ability of polymer molecular chain of the TPV under the molten state increases,the internal friction of the molecular chain decreases along with the rigidity decreases,the processing performance is improved.