3种汽车密封条用TPV的性能研究
Study on Properties of Three Types of TPV for Automotive Sealing Strip
刘瑞 1郝兴天 2王大庆 3刘振宇 3蒋文军3
作者信息
- 1. 中国石油化工股份有限公司茂名分公司研究院,广东 茂名,525011;中国石油化工股份有限公司石油化工科学研究院,北京,100083
- 2. 中国石油化工股份有限公司茂名分公司研究院,广东 茂名,525011;广东工业大学轻工化工学院,广东 广州,510006
- 3. 中国石油化工股份有限公司茂名分公司研究院,广东 茂名,525011
- 折叠
摘要
研究了 3 种国产汽车密封条用热塑性硫化橡胶(TPV)产品(TPV-1,TPV-2,TPV-3)的力学性能、耐热性能、微观形貌和热氧老化性能.结果表明:3 个产品的树脂相可能均为嵌段共聚聚丙烯(PP).3 个产品中,TPV-3 的拉伸强度、断裂伸长率和撕裂强度均最大,TPV-1 的拉伸强度和断裂伸长率均最小,TPV-1 和 TPV-2 的撕裂强度相当,TPV-1 的耐热性能和热氧老化性能均最好,TPV-3 的耐热性能最差,TPV-2 和 TPV-3 的热氧老化性能相当,在温度 70℃、时间 22h、压缩率25%下,TPV-1 的压缩永久变形最大,TPV-3 最小,在温度 23℃、时间 72h、压缩率 25%下,TPV-1 和 TPV-3 的压缩永久变形相当,TPV-2 的压缩永久变形最小.
Abstract
The mechanical properties,heat resistance,microstructure and thermal-oxidative aging property of three kinds of domestic thermoplastic vulcanized rubber(TPV)products(TPV-1,TPV-2,TPV-3)for automotive seals were studied.The results show that the resin phases of three products may all be block copolymer polypropylene(PP).Among three products,TPV-3 has the highest tensile strength,elongation at break and tear strength,while TPV-1 has the lowest tensile strength and elongation at break.TPV-1 and TPV-2 have similar tear strength,while TPV-1 has the best heat resistance and thermal-oxidative aging property.TPV-3 has the worst heat resistance,while TPV-2 and TPV-3 have similar thermal-oxidative aging property.At a temperature of 70℃,a time of 22 h and a compression rate of 25%,TPV-1 has the highest compression permanent deformation,while TPV-3 has the lowest.At a temperature of 23℃,a time of 72 h and a compression rate of 25%,TPV-1 and TPV-3 have the same compression permanent deformation,while TPV-2 has the smallest compression permanent deformation.
关键词
橡胶/热塑性硫化橡胶/嵌段共聚聚丙烯/汽车密封条Key words
rubber/thermoplastic vulcanized rubber/block copolymer polypropylene/automotive sealing strip引用本文复制引用
出版年
2024
NETL
NSTL
万方数据