摘要
研究了硅烷偶联剂改性炭黑补强的交联ＰＯＥ（包括Ｅｎｇａｇｅ８００３，８１５０，８１８０ 和８２００）的动态和静态力学性能，重点考察了其应力应变特性和在高温（１００ ℃） 下的物理性能，探讨了ＰＯＥ分子结构与性能之间的关系，还进行了高温下（１２０ ℃）不同启模方式的恒应变静压缩实验。结果表明：门尼粘度较高的ＰＯＥ（８００３，８１５０ 和８１８０）具有较好的动态抗压缩疲劳性能，而且其综合性能较佳，特别是８００３ 胶料在常温下具有较高的抗撕裂能力；但是在高温下ＰＯＥ的拉伸性能下降较大，其撕裂性能略低于ＥＰＤＭ 和ＳＢＲ 胶料；高温（１２０ ℃）下ＰＯＥ的静压缩实验结果对夹具开启的方式有很大的依赖性，ＰＯＥ的以上这些特性均与交联ＰＯＥ胶料中存在结晶微区结构和此结构含量有关。
The static and dynamic properties,especially the stress strain characteristics and the properties at high temperature of crosslinked thermoplastic polyolefin elastomers(POEs,Engage 8003,8150,8180,8200) filled with pretreated carbon black by silane coupling agent(VTPS) were investigated and the relationship between their structures and properties was discussed.The static compression test at constant strain was made with different mould opening ways at high temperature(120 ℃).The results showed that the POEs with higher Mooney viscosity(8003,8150 and 8180) possessed better dynamic compression fatigue resistance and comprehensive properties,especially 8003 compound had higher tear resistance at normal temperature;but the tensile strength of POE compound decreased dramatically at high temperature,and its tear resistance was somewhat lower than that of EPDM or SBR compound;the static compression test results of POE at high temperature(120 ℃) were strongly dependent upon the mould opening way;and the POEs characteristics above related tightly with the existence and amount of crystal domain in them.
出处
《橡胶工业》
CAS
北大核心
1999年第11期643-648,共6页
China Rubber Industry
关键词
聚烯烃
热塑性弹性体
结晶度
应力
应变
高温
polyolefin elastomer,crystallinity,stress strain characteristics,high temperature performance
