摘要
研究了硅烷交联聚乙烯和过氧化物交联聚乙烯由于结晶和交联的顺序不同而造成的结晶行为的差异，交联密度相同时，过氧化物交联聚乙烯的结晶度和熔点明显低于硅烷交联聚乙烯．交联聚乙烯的非等温结晶动力学表明：交联前后聚乙烯的Ａｖｒａｍｉ指数ｎ基本不变，交联后，半结晶期ｔ１／２延长、结晶速率常数Ｚｃ下降，其中过氧化物交联聚乙烯的变化幅度大于硅烷交联聚乙烯．
The crystallization behavior of silane crosslinked LDPE and peroxide crosslinked LDPE have been compared by using DSC and WAXD techniques. It is found that the crystallinity and melt point of the peroxide crosslinked LDPE are lower than those of the silane crosslinked LDPE when their crosslinking densities are of the same value. DSC measurements show that after crossinking the Avrami exponents ( n ) have no significant change, but the rate constants of crystallization decrease and the half crystallization times increase, whereas the variation range for the peroxide crosslinked LDPE is greater than that for the silane crosslinked LDPE.
出处
《应用化学》
CAS
CSCD
北大核心
1998年第5期31-4,共1页
Chinese Journal of Applied Chemistry
关键词
硅烷交联
聚乙烯
过氧化物交联
结晶
交联改性
peroxide crosslinked LDPE,silane crosslinked LDPE,crosslinking density,crystallinity,non isothermal crystallization kinetics
