| 应用微波法对废PET进行醇解的研究 |
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| 引用本文： | 徐寒松,简令奇,宁莉萍,王建民.应用微波法对废PET进行醇解的研究[J].聚酯工业,2009,22(2). |
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| 作者姓名： | 徐寒松 简令奇 宁莉萍 王建民 |
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| 作者单位： | 中国科学院嘉兴材料与化工技术工程中心,浙江,嘉兴,314006 |
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| 基金项目： | 浙江省面上科研工业项目经费资助项目，嘉兴市中科专项经费资助项目 |
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| 摘 要： | 研究了一种应用微波技术在常压下对废PET催化降解以实现化学回收的方法。考察了在微波作用下,醇解温度、物料配比、催化剂含量及醇解剂官能度对废PET降解程度及降解产物的影响,并利用红外光谱仪对降解产物的化学结构进行了分析。结果表明:综合考虑废PET的醇解程度、醇解产物的性能以及经济成本因素,选定的最佳工艺条件是微波功率500W时,醇解时间15min、反应温度220℃、二甘醇与废PET的质量比为1.25、醋酸锌用量0.2%;其他反应条件不变,将醇解剂改为甘油和二甘醇的混合醇,混合醇与废PET的质量比为1.5,当二甘醇与甘油质量比为1:1时,醇解产物羟值最高,可以达到477mg/g;实验所得的废PET的二甘醇醇解产物是羟基封端分子链含有醚键的聚酯多元醇。
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| 关 键 词： | 废PET 醇解 微波法 |
Study on alcoholysis of waste Poly(ehtylene terephthalate) by microwave method |
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| XU Han-song,JIAN Ling-qi,NING Li-ping,WANG Jian-min.Study on alcoholysis of waste Poly(ehtylene terephthalate) by microwave method[J].Polyester Industry,2009,22(2). |
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| Authors: | XU Han-song JIAN Ling-qi NING Li-ping WANG Jian-min |
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| Affiliation: | Lancer Chemical Engineering & Materials Center of Chinese Academy of Sciences;Jiaxing 314006;China |
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| Abstract: | The way to implement chemical recylcling by catalytic degradation of waste PET under normal pressure was researched in this paper.The influence of the reaction temperature,the material ratio,the amount of catalyst and the functionality of glycolysis agent on the degradation degree and degradation products of waste PET under the microwave function were investigated.The chemical structure of the degradation products were characterized by FTIR.The results show that for the comprehensive consideration of the de... |
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| Keywords: | waste PET alcoholysis microwave |
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