耐热聚丙烯专用料的结构与性能  

Structure and Performance of Heat-Resistant Polypropylene Special Material

作　　者：康文倩 马宗立 高玉林 王雄[1] 杨宝 闫功臣[2] KANG Wenqian;MA Zongli;GAO Yulin;WANG Xiong;YANG Bao;YAN Gongchen(PetroChina Lanzhou Petrochemical Research Center,Lanzhou 730060,China;PetroChina South China Chemicals Marketing Company,Guangzhou 510000,China;PetroChina Lanzhou Petrochemical Company,Lanzhou 730060,China)

机构地区：[1]中国石油天然气股份有限公司兰州化工研究中心,兰州730060 [2]中国石油天然气股份有限公司华南化工销售公司,广州510000 [3]中国石油天然气股份有限公司兰州石化公司,兰州730060

出　　处：《中国塑料》2020年第7期10-13,共4页China Plastics

摘　　要：采用凝胶色谱仪、升温淋洗分析仪、差示扫描量热仪以及X射线衍射仪对国产耐热聚丙烯H8020和2种进口耐热聚丙烯的结构进行表征,进一步采用熔体流动速率仪、万能材料试验机、摆锤冲击仪以及维卡热变形测定仪对性能进行测定。结果表明,H8020的弯曲强度为39.4 MPa、弯曲模量为1820 MPa、拉伸强度为37.5 MPa、冲击强度为3.2 kJ/m^2,具有良好的刚韧平衡性,热变形温度为115℃,维卡软化温度为158℃,综合性能达到甚至超过国外同类材料。The structure of heat-resistant polypropylene special material(H8020)was characterized by gel permeation chromatography,temperature rising elution fractionation,differential scanning calorimetry and X-ray diffractometer,and its mechanical and heat-resistant properties were investigated by melting flow rate instrument,universal material testing machine,pendulum machine and thermal deformation&Vicat softening temperature tester.The results indicated that the heat-resistant polypropylene exhibited the flexural strength of 39.4 MPa,the flexural modulus of 1820 MPa,the tensile strength of 37.5 MPa and the izod impact strength of 3.2 kJ/m^2,presenting a good balance between rigidity and toughness.Moreover,this special material also showed a thermal deformation temperature of 115℃and a Vicat softening temperature of 158℃.It is concluded that the comprehensive performance of the domestic product H8020 is superior to that of foreign products.

关 键 词：耐热聚丙烯 均聚聚丙烯 冲击强度 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]