摘要
用DSC法研究UHMWPE/PC与UHMWPE/HDPE-g-MAH/PC合金材料非等温结晶动力学。DSC曲线分析表明:对于同一种合金材料,随着降温速率的增加,结晶起始温度T0、结晶峰温度Tp都向低温移动,结晶峰宽化。加入增容剂HDPE-g-MAH后,T0、Tp均有所提高,Δt和t1/2增大,结晶速率降低。同时采用莫志深法分析非等温结晶过程,在相同相对结晶度下,UHMWPE/HDPE-g-MAH/PC的F(T)值大于UHMWPE/PC的F(T)值,也表明增容剂的加入降低了材料的结晶能力。
The non-isothermal cryatallization kinetics of UHMWPE/PC and UHMWPE/HDPE-g-MAH/PC at different cooling rates had been investigated by differential scanning calorimetry （DSC）. The analysis of DSC curves showed that for the same blends,the onset temperature （ T0） and the peak temperature （ T ） of crystallization shifted to lower temperature, and crystallization peak broadening. With the addition of compatibillizer, To and Tp shifted to higher temperature, and the whole-time （△t） and half-time （t1/2） increased, the crystallization rate decreased. The Mo＇s method was used to study the non-isothermal cryatallization process. It was found that when the relative crystallinity of both UHMWPE/PC and UHMWPE/HDPE-g-MAH/ PC reached the same, F（T） of UHMWPE/HDPE-g-MAH/PC blends was bigger than that of UHMWPE/PC blends, the crystallization capacity decreased.
出处
《塑料》
CAS
CSCD
北大核心
2011年第3期68-70,9,共4页
Plastics
关键词
超高分子量聚乙烯
聚碳酸酯
非等温结晶动力学
高分子合金
增容剂
ultra-high molecule weight polyethylene
polycarbonate
non-isothermal crystallization kinetics
polymer alloy
compatibillizer
