摘要
利用熔体流动速率测定仪进行了硅烷接枝聚乙烯的水解缩合交联反应的加速试验，发现该反应对水分浓度为一级反应，反应的表观活化能为４２ ｋＪ／ｍｏｌ。由此可推算Ａ 组份的保存期。当催化剂存在时，水解缩合反应明显加快，这时的表观活化能降到２０ ｋＪ／ｍｏｌ。
Using melt flow rate tester, the accelerated test of hydrolytic crosslinking reaction by condensation of silane-grafting LDPE(A component) without catalysts were studied. It was found that the variable of MFR with times followed approximately first order kinetics,and the apparent energy of activation was calculated as 42 kJ/mol. Thus, the storage life of A component can be estimated. In the presence of catalysts, the rate of the moisture catalyzed crosslinking of A component increase obviously, and the apparent activation energy is reduced to 20 kJ/mol.
出处
《功能高分子学报》
CAS
CSCD
1999年第3期289-292,共4页
Journal of Functional Polymers
关键词
硅烷
聚乙烯
交联反应
接枝
储存稳定性
silane
polyethylene
crosslinking
apparent activation energy
storage stability
