摘要
比较了未交联和动态交联不同组成PB/LDPE共混物的力学性能。共混物的T_g、T_m和T_d不随组成而变化,表明PB和LDPE不具有相容性。但共混物中PE的γ转变向高温方向位移,说明PE非晶部分的分子短链和PB有界面相互作用。形态研究表明,未交联体系中量多的组份形成连续相,动态交联体系在PB/LDPE≤70/30时,PE呈连续相,交联的PB为分散相。
The mechanical properties, dynamic mechanical and thermal behavior, crystalline stru-cture and morphology of PB/LDPE blends were investigated. Comparison of the propertiesof uncured and dynamically cured blends of various compositions showed that the PB/LDPE blend system is incompatible.
出处
《应用化学》
CAS
CSCD
北大核心
1990年第1期38-42,共5页
Chinese Journal of Applied Chemistry
关键词
聚丁二烯
低密度聚乙烯
共混
polybutadiene
polyethylene
blend
dynamic vulcanization
