弹性体及填料对退役汽车保险杠回收料性能的影响  

Properties of Retired Automobile Bumper Material Modified by Using Elastomer and Inorganic Fillers

作　　者：尚搏宁 郭巍[1,2,3] 石添文 郑丽嫦[1] 苑铁强 Shang Boning;Guo Wei;Shi Tianwen;Zheng Lichang;Yuan Tieqiang(Wuhan University of Technology, Wuhan 430070, China;Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan 430070, China;Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan 430070, China)

机构地区：[1]武汉理工大学,武汉430070 [2]现代汽车零部件技术湖北省重点实验室,武汉430070 [3]汽车零部件技术湖北省协同创新中心,武汉430070

出　　处：《工程塑料应用》2017年第7期1-7,共7页Engineering Plastics Application

基　　金：国家自然科学基金青年基金项目(51605356);中央高校基本科研业务费专项资金项目(201IVB035;2017-QC-B1-15)

摘　　要：针对退役汽车保险杠老化后的性能提升问题,采用熔融共混改性法研究了三元乙丙橡胶(EPDM)、乙烯–辛烯共聚物(POE)两种弹性体,碳酸钙、滑石粉和纳米蒙脱土(nano-MMT)三种无机填料对退役汽车保险杠回收料性能的影响。结果表明:弹性体的加入能够显著增强回收料的韧性,对回收料的刚度有一定程度的影响,也能一定程度提高回收料的流动性;POE改性回收料的综合性能优于EPDM改性的回收料,在POE含量为10%时回收料的综合性能最优,拉伸强度为21.2 MPa,断裂伸长率为201.5%,弯曲强度为17.6 MPa,缺口冲击强度为56.3 kJ/m^2,熔体流动速率为12.4 g/10 min;无机填料改性回收料的综合性能表现较差,加入相容剂能够显著提升无机填料共混体系的综合性能,nano-MMT对回收料的改性效果优于另外两种无机填料。To solve the problem of performance improvement of the retired automobile bumper,the effects of two kindsof elastomer,such as ethylene propylene terpolymer(EPDM)and ethylene-1-octene copolymer(POE),and three kinds ofinorganic fillers,such as CaCO3,talc and nano-MMT on the performance of retired automobile bumper were studied by meltblending modification method.The results show that the addition of elastomer can significantly enhance the toughness of therecycled material,and have a certain degree of negative influence on stiffness,also can improve the liquidity.The performanceof POE modified recycled material is better than that of EPDM modified recycled material.When the content of POE is10%,thecomprehensive performance of the recycled material is the best.Its tensile strength is21.2MPa,the elongation at break is201.5%,the bending strength is17.6MPa,the notch impact strength is56.3kJ/m2,and melt flow rate is12.4g/10min.The performanceof the inorganic filler modified recycled material is poorer,the addition of compatilizer can significantly enhance the comprehensiveperformance of inorganic fillers modified recycled material,and the performance of nano-MMT modified recycled material is betterthan the other two kinds of inorganic filler.

关 键 词：汽车保险杠 回收利用 弹性体 改性 

分 类 号：X734.2[环境科学与工程—环境工程]