| 聚对苯二甲酸丁二醇酯的化学扩链改性研究 |
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| 引用本文： | 刘生鹏,童身毅.聚对苯二甲酸丁二醇酯的化学扩链改性研究[J].合成纤维工业,2003,26(4):15-18. |
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| 作者姓名： | 刘生鹏 童身毅 |
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| 作者单位： | 湖北省新型反应器与绿色化学工艺重点实验室,湖北,武汉,430073 |
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| 摘 要： | 以 2 ,2′ -双 ( 2 -唑啉 ) (BOZ)为扩链剂 ,对聚对苯二甲酸丁二醇酯 (PBT)进行扩链改性 ,考察了反应时间、扩链剂用量对扩链效果的影响 ,测试了扩链后PBT的热失重、力学性能和DSC。结果表明 ,BOZ的用量为 0 .44 % ,反应时间 3～ 5min ,PBT的最大扩链效率可达 72 .9% ,PBT的特性粘数从 0 .83dL/g提高到 1.2 1dL/ g ,扩链后PBT热稳定性和力学性能都得到提高。
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| 关 键 词： | 聚对苯二甲酸丁二醇酯 2 2′-双(2-唑啉) 扩链 改性 |
| 文章编号： | 1001-0041(2003)04-0015-04 |
| 修稿时间： | 2003年1月23日 |
Study on chemical chain- extension modification of poly ( butylene terephthalate) |
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| Liu Shengpeng,Tong Shenyi.Study on chemical chain- extension modification of poly ( butylene terephthalate)[J].China Synthetic Fiber Industry,2003,26(4):15-18. |
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| Authors: | Liu Shengpeng Tong Shenyi |
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| Abstract: | The chain extension modification of poly(butylene terephthalate) (PBT) was conducted with 2,2′-bis(2-oxazoline) (BOZ) as chain-extender. The effects of reaction time and chain-extender amount on the chain-extending effect were investigated. The thermogravimetric difference, mechanical properties and DSC data were measured for PBT after chain-extension modification. The results showed that the chain-extension efficiency could be up to 72.9%, the intrinsic viscosity of PBT was increased from 0.83 dL/g to 1.21 dL/g, and the thermal stability and mechanical properties of PBT were also improved after chain-extension modification by BOZ of 0.44% in 3～5 min. |
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| Keywords: | poly(butylene terephthalate) 2 2′-bis(2-oxazoline) chain extension modification |
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