Crosslinking of ultra-high molecular weight polyethylene in the melt by means of 2,5-dimethyl-2,5-bis(tert-butyldioxy)-3-hexyne: 2. Crystallization behaviour and mechanical properties
Crosslinking of ultra-high molecular weight polyethylene in the melt by means of 2,5-dimethyl-2,5-bis(tert-butyldioxy)-3-hexyne: 2. Crystallization behaviour and mechanical properties
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DOI：
10.1016/0032-3861(82)90222-1
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发表时间：
1982-12
期刊：
影响因子：
4.6
通讯作者：
J. Boer;A. Pennings
中科院分区：
文献类型：
--
作者：
J. Boer;A. Pennings
超高分子量聚乙烯，在180℃下通过2,5-二甲基-2,5-双(叔丁基二氧基)-3-己炔进行熔融交联。结果表明，交联和缠结，无论是否被截留，都会在交联时导致相同程度的聚乙烯结晶度降低。交联将一种非常稳定的自由基引入聚乙烯中。结论是，使用低至 0.2-0.3 wt% 的过氧化物即可获得几乎完全交联的材料，具有高结晶度，因此具有良好的机械性能。
Ultra-high molecular weight polyethylene, was crosslinked in the melt at 180°C by means of 2,5-dimethyl-2,5-bis(tert-butyldioxy)-3-hexyne. It is shown that crosslinks and entanglements, whether trapped or not, contribute to the same degree to the decrease in crystallinity of the polyethylene upon crosslinking. Crosslinking introduced a very stable type of radical into the polyethylene. It was concluded that an almost completely crosslinked material with high crystallinity and therefore good mechanical properties, could be obtained by using as little as 0.2–0.3 wt% of peroxide.