对苯二甲酸乙二酯/聚乙二醇共聚醚酯的热性能研究Study on Thermal Properties of Copolyether-Ester-Terephthalate
陈放,方小兵,张大省
CHEN Fang1,FANG Xiao-bing2,ZHANG Da-sheng1(1.Beijing Institute of Clothing Technology
摘要(Abstract)：
将含有磺酸盐基团化合物及不同添加量的聚乙二醇(PEG)与对苯二甲酸乙二酯共聚合成共聚醚酯(COPEET),利用差示扫描量热分析法(DSC)研究了一系列COPEET的玻璃化转变温度、结晶温度以及熔融温度等的变化规律。结果表明:随PEG添加量的增加,COPEET的玻璃化转变温度有规律地下降;PEG质量分数小于30%时,有利于冷结晶、结晶度下降;继续增加PEG则COPEET变得难于结晶;PEG质量分数小于40%时,热结晶容易,但结晶度下降;PEG添加量更高时,熔融结晶变得困难了;添加PEG会降低COPEET的熔点。
The changing regularities of glass transition temperature,crystallization temperature and milt temperature of copolyether-ester-terephthalate samples with different PEG adding amount and containing sulfonate group were studied by DSC.Results showed that glass transition temperature cut down regulately with the increase of PEG adding amount;the cold crystallization temperature cut down gradually and crystallinity declined with PEG adding range of 0~30 %,there was no cold crystallization peak with PEG adding above 30 %;the heat crystallization temperature rose gradually but crystallinity declined with the PEG adding range of 0~40 %,and the heat crystallization peak did not appear with PEG adding above 40 %;and adding PEG enabled the melt point of copolyether-ester to cut down.
关键词(KeyWords)：
共聚醚酯;热性能;结晶性能
copolyether-ester-terephthalate,thermal property,crystal property
基金项目(Foundation):
作者(Author):
陈放,方小兵,张大省
CHEN Fang1,FANG Xiao-bing2,ZHANG Da-sheng1(1.Beijing Institute of Clothing Technology
DOI: 10.16090/j.cnki.hcxw.2011.12.002