PET工程塑料的研制  

Development of PET Engineering Plastics

作　　者：陆嘉[1] 王兴仁[1] 凌泽济[1] 兰新 

机构地区：[1]扬子石化公司研究院

出　　处：《塑料》1999年第1期34-37,共4页Plastics

摘　　要：通过共缩聚反应合成了不同ＰＥＧ分子量的ＰＥＴ－ＰＥＧ共聚脂，采用ＤＳＣ法测定了共聚物的结晶性能、结晶速度。还测试了共聚物的力学性能。结果表明：ＰＥＧ的加入能有效地增加分子链柔性，改善结晶性能，其中ＰＥＴ－ＰＥＧ６０００在１００℃的半结晶时间为０７ｍｉｎ。ＰＥＧ的含量在２０％以下，拉伸性能没有恶化，冲击强度、断裂伸长率大大提高。The PET-PEG copolymers with different PEG molecular weight were synthesized through condensation polymerization. The crystal properties and mechanical properties of PET-PEG copolyesters were studied.The results showed that the polymer chain became easy to move and the crystal property was improved.The crystal rate of PET-PEG 6000 copolymer could attain to 0 7 minutes at 100℃.When the content of PEG was below 20%,the tensile strength of the copolyester almost did not change ,the Izod impact strength and elongation at break of the system were greatly improved.

关 键 词：PET PEG 共聚脂 结晶速度 力学性能 聚酯树脂 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]