| 不同分子链结构聚乙烯的交联研究 |
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| 引用本文： | 朱兆奇,唐晓红.不同分子链结构聚乙烯的交联研究[J].现代塑料加工应用,1992,4(4):13-17. |
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| 作者姓名： | 朱兆奇 唐晓红 |
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| 作者单位： | 江苏化工学院，江苏化工学院 常州，213016，常州，213016 87级毕业生 |
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| 摘 要： | 研究了线性、短支链和长支链支化三种分子链结构聚乙烯的化学交联过程,对交联体系的机械性能和热性能进行了分析对比。结果表明,在同样交联剂含量情况下,聚乙烯交联体系的凝胶含量顺序是:长支链支化>短支链支化>线性结构;交联引起的拉伸强度变化率为长支链支化>短支链支化>线性结构;交联引起的断裂伸长率变化率为线性结构>短支链支化>长支链支化;交联引起结晶度的下降程度为线性结构>短支链支化>长支链支化。
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| 关 键 词： | 聚乙烯 交联 性能 |
A STUDY ON THE CROSSLINKING OF PES WITH DIFFERENT CHAIN STRUCTURE |
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| Zhu Zhaoqi and Tang Xiaohong.A STUDY ON THE CROSSLINKING OF PES WITH DIFFERENT CHAIN STRUCTURE[J].Modern Plastics Processing and Applications,1992,4(4):13-17. |
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| Authors: | Zhu Zhaoqi and Tang Xiaohong |
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| Affiliation: | Jiangsu Institute of Chemical Technology |
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| Abstract: | The crosslinking of PE s with different molecular chain structures(linear, the branching structuresof short and long branch chain) are studied. The mechanical and thermal properties ofcrosslinked PE systems are analysed and compared. The results show that in the case of samecrosslinking agent, the comparative order of gel content of crosslinked PE systems isLDPE > LLDPE > HDPE . The order of tensile strength and elongation at break isHDPE > LLDPE > LDPE . The order of decrement of melt peak temperature and maximumcystalization rate temprature of different crosslinked PE system is HDPE > LLDPE > LDPE. Simpleexplanations about these orders are given, too. |
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| Keywords: | polyethylene crosslink chain structure |
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