废弃PVC/CPE复合材料的力学和摩擦磨损性能研究  

Study on Mechanical and Friction and Wear Properties of Waste PVC/CPE Composites

作　　者：陈盼 陆露 郭川东 向定汉[1] CHEN Pan;LU Lu;GUO Chuan-dong;XIANG Ding-han(School of Materials Science and Engineering,Guilin University of Electronic Technology,Guilin 541004,China;Guilin International Electric Wire&Cable Group Co.,Ltd.,Guilin 541004,China)

机构地区：[1]桂林电子科技大学材料科学与工程学院,广西桂林541004 [2]桂林国际电线电缆集团有限责任公司,广西桂林541004

出　　处：《塑料科技》2023年第12期1-5,共5页Plastics Science and Technology

基　　金：国家工信部绿色制造系统集成项目(工信部节函〔2018〕272号)。

摘　　要：将废弃线缆料聚氯乙烯(PVC)和氯化聚乙烯(CPE)进行机械粉碎预处理,通过转矩流变仪制备复合材料,使用平板硫化机和微型注射机制出废弃PVC/CPE复合材料样条。利用立式电子万能试验机、电热恒温鼓风干燥箱、摩擦磨损试验机测试复合材料的拉伸、热老化和摩擦磨损性能,通过场发射扫描电镜(SEM)观察复合材料拉伸断面、磨损表面微观形貌。结果表明:当CPE添加量为3%时,拉伸强度达到最大(14.22 MPa),比废弃PVC提升了15.23%;摩擦系数达到最小(0.353),比废弃PVC降低了26.15%;比磨损率达到最小(32.78 mm^(3)/(N∙m)),比废弃PVC降低了63.65%。因此,添加适当的CPE能够提升复合材料的拉伸强度,降低材料的摩擦系数和比磨损率,复合材料磨损机制主要为疲劳磨损。The waste cable materials polyvinyl chloride(PVC)and chlorinated polyethylene(CPE)were mechanically crushed and pretreated.The composites of different proportions were prepared by torque rheometer.The test samples of the waste PVC/CPE composites were produced by a plate vulcanizer and a micro-injection molding mechanism.The tensile,thermal aging and friction and wear properties of the composites were measured by a vertical electronic universal testing machine,an electrothermal constant temperature blast drying oven,and a friction and wear testing machine.The tensile section and wear surface morphology of the composites were observed by a field emission scanning electron microscopy(SEM).The results show that when the CPE content is 3%,the tensile strength reaches the maximum(14.22 MPa),which is 15.23%higher than that of waste PVC alone,and the friction coefficient reaches the minimum(0.353),which is 26.15%lower than that of waste PVC alone.The specific wear rate also reaches the minimum(32.78 mm^(3)/(N∙m)),which is reduced by 63.65%lower than that of waste PVC alone.Therefore,the addition of appropriate CPE can improve the tensile strength of the composites,reduce the friction coefficient and specific wear rate of the material,and the wear mechanism of the composites is mainly due to fatigue wear.

关 键 词：废弃聚氯乙烯 废弃氯化聚乙烯 力学性能 摩擦磨损 

分 类 号：TQ325.3[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]