轨道交通用聚丙烯复合材料的耐低温性能以及力学性能研究  

Study on Low Temperature Resistance and Mechanical Properties of Polypropylene Composites for Rail Transit

作　　者：张艳云[1] 李峰 刘婷婷[3] 孙洋[1] ZHANG Yan-yun;LI Feng;LIU Ting-ting;SUN Yang(School of Road and Bridge Engineering,Xinjiang Vocational&Technical College of Communications,Urumqi 831401,China;School of Architecture and Design,Shanxi Vocational University of Engineering Science Technology,Jinzhong 030619,China;School of Rail Transit,Jilin Communications Polytechnic,Changchun 130000,China)

机构地区：[1]新疆交通职业技术学院道路桥梁工程学院,新疆乌鲁木齐831401 [2]山西工程科技职业大学建筑设计学院,山西晋中030619 [3]吉林交通职业技术学院轨道交通学院,吉林长春130000

出　　处：《塑料科技》2022年第4期69-72,共4页Plastics Science and Technology

摘　　要：将聚丙烯(PP)与聚氯乙烯(PVC)熔融共混,制备PP/PVC复合材料,并对PP/PVC的力学性能、热稳定性、阻燃性能以及耐低温性能进行研究。结果表明:4号样具有较好的经济效益和综合性能。4号样拉伸强度、断裂伸长率以及弯曲强度分别为29.6 MPa、613%和1 152 MPa,均优于纯PP材料。4号样具有较好的阻燃性能,LOI值为46.5%,UL94评级为V-2级,具有较好的火灾安全性。4号样具有最佳的低温冲击强度8.9 kJ/m2,相比纯PP材料增加111.9%。因此,4号样有潜力应用于新型抗冻阻燃轨道交通材料。Polypropylene(PP) and polyvinyl chloride(PVC) were melt blended to prepare PP/PVC composites.The mechanical properties,thermal stability,flame retardancy and low temperature resistance of PP/PVC were studied.The results show that sample 4 has good economic benefit and comprehensive performance.The tensile strength,elongation at break and flexural strength of sample 4 are 29.6 MPa,613% and 1 152 MPa,respectively,which are better than those of pure PP material.The sample 4 has good flame retardant properties,LOI value is 46.5%,UL94 rating is V-2,and has good fire safety.The sample 4 has the best low temperature impact strength of 8.9 kJ/m~2,which is 111.9% higher than that of pure PP.Therefore,sample 4 has the potential to be applied to new anti-freezing and flame retardant rail transit materials.

关 键 词：聚丙烯 聚氯乙烯 耐低温性能 力学性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]