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OALib Journal期刊
ISSN: 2333-9721
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可交联硅烷接枝聚乙烯共混物的性能
Keywords: 可交联硅烷按枝聚乙烯共混物,熔体流动速率
Abstract:
？研究了可交联硅烷接枝聚乙烯共混物（pebx）的熔体流动速率（mfr），维卡软化点试过程中的温度变形关系，拉伸性能及结晶行为等性质。研究结果表明：（ι）纯聚乙烯共混物（peb）的mfr基本上不随时间变化，而pebx的mfr随时间减小；（ⅱ）在相同的温度下，交联后的聚乙烯共混物（cpebx）的变形量小于peb和pebx的，在维卡软化点附近的温度，cpebx的变形速率远小于peb和pebx的；（ⅲ）cpebx有交联，但其断裂伸长率与pebx和peb的相近，未受到交联的影响，其屈服应力高于pebx和peb的；（ⅳ）cpebx的熔点和熔程与pebx及peb的差不多，但结晶度比后两者的有所升高。讨论了产生上述特性的原因。
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