POE/LDPE共混交联改性发泡PP力学性能的研究  

Study on the mechanical property of blending-crosslinking modified foaming polypropylene

作　　者：蒋鹭翔 陈雷雨 刘畅 许绿丝[1,2] 马晟佳 JIANG Luxiang;CHEN Leiyu;LIU Chang;XU Liisi;MA Ssengjia(Department of Environmentnl Science and Engineering, Huaqiao University, Xiamen 361021, China;Fujian Provinciol Reseoch Centeo of Adustiiol Wastewater Biochemical Treatment, Xiamen 361021, China)

机构地区：[1]福建省华侨大学环境工程研究所,福建厦门361021 [2]福建省工业废水生化处理工程技术研究中心,福建厦门361021

出　　处：《材料科学与工艺》2019年第4期24-29,共6页Materials Science and Technology

基　　金：国家自然科学基金资助项目(21603077)

摘　　要：采用低密度聚乙烯(LDPE)和乙烯-1-辛烯共聚物(POE)作为增韧材料,以过氧化二异丙苯(DCP)和三羟甲基丙烷三甲基丙烯酸酯(TM)为交联体系制备共混交联改性聚丙烯(PP),通过多指标正交实验研究共混交联改性的配方,分析了共混交联改性对PP力学性能的影响.结果表明:最佳改性配方为PP70%,LDPE/POE20/10%,DCP0.2%,TM0.6%,纳米ZnO1%;共混交联改性对PP具有良好的增韧作用,冲击强度提高了490%;共混交联改性PP的结晶速率下降,熔融温度范围由原来的17.3℃增加到21.8℃,而结晶度还有所增大.实验最终表明:采用POE/LDPE共混交联改性PP制备出的发泡塑料发泡效果较好.LDPE and POE were selected as toughening material. The blending-crosslinking polypropylene was successfully obtained by adding crosslinked systems DCP and TM. The influence of blending-crosslinking modification on PP’s mechanical property was investigated by researching the optimum formula of blending-crosslinking modification. Results indicated that the optimum formula was PP 70% LDPE 20%/POE 10%, DCP 0.2%, TM 0.6%, and nano ZnO 1%. The impact strength of blending-crosslinking modified PP increased by 490%, its crystallization rate decreased, its fusing temperature range increased from 17.3 ℃ to 21.8 ℃, and its crystallinity was slightly bigger than PP. The experiment showed that the foaming effect of foamed plastic prepared by blending-crosslinking modified polypropylene was much better.

关 键 词：聚丙烯 低密度聚乙烯 乙烯-1-辛烯共聚物 共混 交联改性 发泡 

分 类 号：TQ365.14[化学工程]