This disclosure relates to a process for cross-linking polymers, e.g. polyethylene, or degrading polymers, e.g. polypropylene, using peroxides having at least one carbon-carbon double bond in the molecule, e.g. 1-(t-butyl peroxy isopropyl)-3-isopropenylbenzene.
Incorporation of the peroxides into the polymer may be carried out at relatively high temperatures without the risk of premature decomposition of the peroxide, thus allowing easy processability of the polymer mass prior to cross-linking or degradation. The polymeric endproducts obtained are odourless and do not display blooming.
本公开涉及一种利用分子中至少有一个碳碳双键的过氧化物(如 1-(t-丁基过氧化异丙基)-3-异
丙烯基苯)交联聚合物(如聚
乙烯)或降解聚合物(如聚
丙烯)的工艺。
过氧化物与聚合物的结合可以在相对较高的温度下进行,不会出现过氧化物过早分解的危险,从而使聚合物在交联或降解前易于加工。获得的聚合物最终产品无味,也不会出现开花现象。