DSC测定PET的热转变实验拓展研究  

Development study of thermal behavior of PET by DSC

作　　者：王艳色[1] 唐萍[1] 李健丰[1] 张春庆[1] 曹玉明[1] 

机构地区：[1]大连理工大学化工与环境生命学部高分子材料系,精细化工国家重点实验室,辽宁大连116024

出　　处：《实验室科学》2016年第3期26-29,33,共5页Laboratory Science

基　　金：中央高校基本科研业务费“基于阻滞阴离子聚合制备星形高抗冲丁二烯/异戊二烯/苯乙烯树脂方法研究”(项目编号:DUT13RC208)

摘　　要：对四种不同来源的PET(聚对苯二甲酸乙二醇酯)材料进行了热转变行为表征和分析,采用两种不同的积分方法计算了淬冷后PET的结晶度,结果表明方法 2得到的结晶度与真实值更加接近。采用MDSC模式详细考察并分析了PET在升温过程中的热转变行为,发现PET的结晶和熔融过程是同时进行的,同时说明了采用方法 1计算结晶度不准确的原因。通过对本教学实验的进一步拓展,使学生对高分子材料的热转变行为有了更加深刻的认识,从而提高了实验教学效果。DSC was used to characterize the thermal behavior of PET from four different sources,and the crystallinity was obtained by two methods. The results showed that the crystallinity obtained by method-2 was more close to the true value. MDSC was used to investigate the thermal behavior of PET in detail,and it was found that the crystallization and melting of PET happened simultaneously,and the reason for the inaccuracy of the method-1 was explained. The development study of thermal behavior of PET enhanced students＇ understanding of the thermal behavior of the polymers,and improve the teaching effect.

关 键 词：聚对苯二甲酸乙二醇酯 热转变 实验拓展 

分 类 号：O631.22[理学—高分子化学]