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从理论上推导了 LDPE-BP-TAIC 体系的光交联反应动力学方程,并与从抽提,溶胀,热延伸等实验所得的结果相比较而得到检验。通过分析,着重阐明了交联剂在光敏化交联过程中的促进机理;它既是能量捕捉剂,又是活性基团的载体和交联网络的纽带。高分子链以通过交联剂分子而相互连接成为交联的主要形式,从而使交联的速度和深度都得到显著的提高。
The kinetic equation of photocrosslinking reaction in LDPE-BP-TAIC system is derived theoretically and compared with the results obtained from experiments such as extraction, swelling and thermal elongation. Through the analysis, the promotion mechanism of cross-linking agent in the process of photo-sensitized crosslinking is emphatically expounded. It is not only the energy trapping agent, but also the carrier of the active group and the link of the crosslinking network. The polymer chains are linked to each other by the cross-linking agent molecules to become the main form of cross-linking, so that both the speed and the depth of cross-linking are significantly improved.