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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。
DSC Study on Nonisothermal Crystallization Kinetics of UHMWPE / PC and UHMWPE / HDPE-g-MAH / PC Alloy Materials. DSC curve analysis shows that with the same alloy material, as the cooling rate increases, the crystallization onset temperature T0 and crystallization peak temperature Tp move to the low temperature, and the crystallization peak broadens. After adding the compatibilizer HDPE-g-MAH, T0 and Tp increased, while Δt and t1 / 2 increased, the crystallization rate decreased. At the same time, the non-isothermal crystallization process was analyzed by Mo Chi method. The F (T) value of UHMWPE / HDPE-g-MAH / PC was higher than that of UHMWPE / PC under the same relative crystallinity. The addition of the material reduces the crystallization ability of the material.