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本文是继应用WAXD与SAXS研究退火时间对HEPP结构影响后的第二部分工作,即退火温度的影响。结果指出:FRS-XRSA是研究择优取向聚合物结晶与取向的合理方法;HEPP的X_c~x与L_(kkl)随T_(an)存在着熔融-结晶-再熔融及趋于平稳的过程,当t_(an)=30min,T_(an)≥140℃是较佳结晶条件;与前人工作不同,HEPP中的片晶似呈扭曲状,且随T_(an)增加,扭曲片晶向伸展片晶转变,当T_(an)≥140℃,伸展取向渐趋稳定;SAXS结果指出,d随T_(an)线性增加,d_c在T_(an)从110°—120℃出现剧变增厚,d_0的变化与晶粒的熔融和片晶的增厚相对应,片晶层是由二层晶粒堆砌而成。T_(an)与t_(an)相比,两者对HEPP的结构都有明显的影响。
This paper is the second part of the work on the effect of annealing time on the structure of HEPP by using WAXD and SAXS, that is, the effect of annealing temperature. The results show that FRS-XRSA is a reasonable method to study the crystallization and orientation of the preferred orientation polymer. The melting-crystallization-remelting and the stabilization of X_c ~ x and L_ (kkl) of TEP (HEPP) t_an = 30min, T_ (an) ≥140 ℃ is the better crystallization condition. Unlike the previous work, the lamellae in HEPP appear to be distorted, and with the increase of T an, (T) (an) ≥140 ℃. The SAXS results show that d increases linearly with T an, while d_c increases dramatically from 110 ° -120 ℃ at T an, The changes correspond to the melting of the grains and the thickening of the platelets, which are made up of two layers of grains. T_ (an) and t_ (an) compared to both have a significant impact on the structure of HEPP.