摘要
用光引发剂二苯甲酮及其衍生物4-氯苯酮(4-CBP)和多官能团交联剂三聚氰酸三烯丙酯(TAC)等相结合的引发体系,研究了高密度、线形低密度和支化低密度聚乙烯熔融态光交联的动力学特征。通过对交联产物凝胶含量和交联密度的测定,以及IR和UV光谱方法,着重考察了4-CBP/TAC引发体系的交联效率和引发剂、交联剂及其浓度、光强、辐照温度和环境等因素对光交联过程的影响,初步确定了用于聚乙烯厚样品光交联的高效引发体系和最佳化条件。
The kinetic character of photocrosslinking of high density, linear low density and branched low density polyethylene ia the melt has been studied in this work, using benzo-phenone(BP) and its derivatives such as 4-chlorobenzophenone (4-CBP) as photoinitiators and triallylcyanurate (TAC) etc. as crosslinkers. The efficiency of the 4-CBP-TAC-initi-ated photocrossiuking and various factors affecting the crosslinking process, such as pho-toinitiator, crosslinker and their concentrations, irradiation temperature, atmosphere, UV light intensity were examined emphatically by determining the gel content and the network chain density in the pliotocrosslinked product and using IR, UV spectra. The very efficient initiating system and optimizing irradiations conditions for PE photocrosslinking of thick samples have been found primarily.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1990年第6期37-43,共7页
Polymer Materials Science & Engineering
关键词
聚乙烯
光交联
光引发剂
交联剂
photocrosslinking, polyethylene, photoinitiator, crosslinker, gel content, network chain density. IR, UV.
