| 交联聚烯烃热塑性弹性体的性能研究 Ⅱ.应力-应变特性和高温性能 |
| Study on Properties of Cross-linked Thermoplastic Polyolefin Elastomer Ⅱ.Stress-strain Characteristics and High Temperature Performance |
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| DOI： |
| 中文关键词: 聚烯烃热塑性弹性体 结晶度 应力-应变特性 高温性能 |
| 英文关键词: polyolefin elastomer crystallinity stress-strain characteristics high temperature performance |
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| 中文摘要: |
| 研究了硅烷偶联剂改性炭黑补强的交联POE(包括Engage 8003，8150，8180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。 |
| 英文摘要: |
| 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(V TPS) 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 some what 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 POEscharacteristics above related tightly with the existence and amount of crystal domain in them. |
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