过氧化二异丙苯对竹纤维增强聚烯烃复合材料机械与流变特性的影响  

Effects of Dicumyl Peroxide on Mechanical and Rheological Properties of Bamboo Fiber Reinforced Polyolefin Composite

作　　者：徐成 江太君 胡灿 XU Cheng;JIANG Taijun;HU Can(Research and Development Department,Dongguan Mingfeng Biomass Technology Co.,Ltd.,Dongguan Guangdong 523049,China;Engineering Research Center,Dongguan Mingfeng Packaging Co.,Ltd.,Dongguan Guangdong 523049,China;College of Liling Ceramic,Hunan University of Technology,Zhuzhou Hunan 412007,China)

机构地区：[1]东莞铭丰生物质科技有限公司技术研发部,广东东莞523049 [2]东莞铭丰包装股份有限公司工程技术研发中心,广东东莞523049 [3]湖南工业大学醴陵陶瓷学院,湖南株洲412007

出　　处：《包装学报》2022年第1期48-52,共5页Packaging Journal

基　　金：国家自然科学基金资助项目(51973056,52173034);湖南省科技创新计划基金资助项目(2020NK2035)。

摘　　要：采用过氧化二异丙苯(DCP)对聚丙烯及聚乙烯体系进行热降解处理,以提高竹纤维增强聚烯烃复合材料的熔融指数;借助聚丙烯与聚乙烯之间的微交联结构,提升竹纤维/聚烯烃复合材料的力学性能,降低复合材料的模塑收缩率。研究结果表明:DCP可以很好地促进聚烯烃的降解,聚烯烃的熔融指数与DCP的质量分数呈近线性关系;竹纤维的加入会降低DCP含量变化对竹纤维/聚丙烯复合材料熔融指数的影响;当复合材料中竹纤维质量分数为45%、DCP质量分数为0.3%时复合材料的力学性能最佳。Dicumyl peroxide(DCP)was used to improve the melt flow index of polypropylene and polyethylene composite by thermal degradation in order to enhance the melt flow index of bamboo fiber reinforced polypropylene and polyethylene composite.The micro-crosslinking induced by DCP greatly enhanced the mechanical property and reduced the moulding shrinkage of bamboo fiber reinforced polypropylene and polyethylene composite.The results show that DCP could greatly promote the degradation of polyolefin and the melt flow index of polypropylene and polyethylene composite corelate linearly with DCP concentration.The addition of bamboo fiber could narrow the variation of melt flow index induced by DCP concentration.The composite with bamboo fiber concentration of 45%could obtain the best mechanical property at the optimum DCP concentration of 0.3%.

关 键 词：过氧化二异丙苯 聚烯烃 微交联 熔融指数 力学性能 模塑收缩率 

分 类 号：TQ327[化学工程—合成树脂塑料工业]