老化方式对聚氯乙烯材料老化过程的影响规律  

Influence of Aging Methods on Aging Process of Polyvinyl Chloride Materials

作　　者：张健 王若民 方振邦 滕越 缪春辉 张洁 杨洋 ZHANG Jian;WANG Ruo-min;FANG Zhen-bang;TENG Yue;MIAO Chun-hui;ZHANG Jie;YANG Yang(Anhui Xinli Electric Technology Consulting Co.,Ltd.,Hefei 230601,China;Electric Power Research Institute,State Grid Anhui Electric Power Co.,Ltd.,Hefei 230600,China)

机构地区：[1]安徽新力电业科技咨询有限责任公司,安徽合肥230601 [2]国网安徽省电力有限公司电力科学研究院,安徽合肥230600

出　　处：《塑料科技》2022年第6期69-73,共5页Plastics Science and Technology

摘　　要：设计一种集合热、水和力等老化因素的三效耦合老化试验方法,研究聚氯乙烯(PVC)材料在热空气、氙灯和三效耦合条件下的老化过程。通过傅里叶变换红外光谱(FTIR)、凝胶渗透色谱(GPC)、差示扫描量热(DSC)和扫描电镜(SEM),分析PVC材料在不同老化条件下的化学组成和性质变化规律。通过抗冲击强度和拉伸断裂分析,比较老化条件对材料力学性能的影响。结果表明:与氙灯老化和热空气老化方式相比,设计的三效耦合老化试验方法更能够准确反应PVC材料在运动水流中的老化状态。此研究有助于开发和设计耐流动热水老化的PVC淋水填料和管道等材料,并为相关材料器件的维保和质检提供参考。The aging process of polyvinyl chloride(PVC) materials under hot air, xenon lamp and three-effect coupling conditions was studied by designing a three-effect coupling aging test method that integrates heat, water and force. The chemical composition and properties of PVC materials under different aging conditions were analyzed by Fourier transform infrared spectroscopy(FTIR), gel permeation chromatography(GPC), differential scanning calorimetry(DSC)and scanning electron microscopy(SEM). The effects of aging conditions on mechanical properties of materials were compared by impact strength and tensile fracture analysis. The results show that compared with xenon lamp aging and hot air aging, the designed three-effect coupling aging test method can more accurately reflect the aging state of PVC materials in moving water. The research is helpful to the development and design of PVC water-drenching filler and pipeline materials resistant to flowing hot water aging, and provides reference for the maintenance and quality inspection of related materials and devices.

关 键 词：聚氯乙烯 氙灯老化 热空气老化 淋水填料 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]