聚酯纤维乙二醇醇解法( Ⅰ) :醇解工艺

纺织学报 ›› 2007, Vol. 28 ›› Issue (11): 21-24.

聚酯纤维乙二醇醇解法( Ⅰ) :醇解工艺

李永贵;李准准;佴友兵;葛明桥

江南大学生态纺织教育部重点实验室

收稿日期:2007-01-23 修回日期:2007-05-30 出版日期:2007-11-15 发布日期:2007-11-15
通讯作者: 李永贵

Glycolysis of recycled polyester f ibers using ethylene glycol ( Ⅰ) :glycolysis technique

LI Yonggui;LI Zhunzhun;NAI Youbing;GE Mingqiao

Received:2007-01-23 Revised:2007-05-30 Online:2007-11-15 Published:2007-11-15
Contact: LI Yonggui

摘要/Abstract

摘要： 为减少废弃聚酯(PET) 纤维对环境造成污染,促进资源循环利用,使用过量乙二醇(EG) ,以Zn (AC) 2 ·2H2O为催化剂,在氮气保护下,对回收PET纤维进行解聚,并分离提纯,研究了乙二醇醇解工艺。结果表明:温度、催化剂用量和反应时间是影响醇解率的主要因素;醇解温度为196 ℃,催化剂用量是PET纤维质量的0. 2 % ,反应时间为2 h ,醇解率达到96. 65 %;对废弃PET纤维采用乙二醇醇解法回收具有一定的实用价值。

Abstract: In order to reduce the pollution produced by polyester fiber wastes and promote resource recycling ,
the recycled polyester fiber was depolymerized through glycolysis using excessive ethylene glycol under a
nitrogen atmosphere in the presence of metal acetate (Zn (AC) 2·2H2O) as a catalyst . Glycolysis product was
purified. It was found that the conversion rate of glycolysis is mainly influenced by reaction temperature and
time , and amount of catalyst . The preferable conversion rate (96. 65 %) can be obtained with 0. 2 % catalyst
(on weight of PET fiber) at 196 ℃for 2 h. The study reveals that the glycolysis of recycled polyester fiber is
a good method with practicality.

李永贵;李准准;佴友兵;葛明桥. 聚酯纤维乙二醇醇解法( Ⅰ) :醇解工艺[J]. 纺织学报, 2007, 28(11): 21-24.

LI Yonggui;LI Zhunzhun;NAI Youbing;GE Mingqiao. Glycolysis of recycled polyester f ibers using ethylene glycol ( Ⅰ) :glycolysis technique[J]. JOURNAL OF TEXTILE RESEARCH, 2007, 28(11): 21-24.

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