摘要
用扫描电子显微镜、凝胶渗透色谱、差示扫描量热法等分析了低密度聚乙烯(LDPE)接枝及交联前后微观结构的变化。结果表明,LDPE被接枝后交联,形成了明显的网状结构;LDPE2102TN00被硅烷A151接枝后,交联形成的网状结构比采用2种硅烷A151/A171接枝具有更好的规整性。A151/A171接枝LDPE每11个分子中有1个硅原子。
The variation in microstructure of low density polyethylene (LDPE) pre- and post-grafting and crosslinking was characterized by scanning electron microscopy, gel permeation chromatography and differential scanning calorimetry. The results indicate that after grafting a distinct network structure is formed in LDPE. The regularity of network in LDPE 2102 TN 00 grafted and crosslinked by silane A 151 is much better than that of LDPE adopting the combination of silane A 151 and A 171. In the formula of the LDPE grafted by silane A 151/A 171, there is 1 silicon atom for every 11 molecules, calculated by number-average molecular mass on the assumption that silane monomers are homogeneously dispersed in the LDPE matrix before and after the graft reaction.
出处
《合成树脂及塑料》
EI
CAS
北大核心
2005年第1期40-43,共4页
China Synthetic Resin and Plastics
