| 高黏度聚酯流变行为的研究 |
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| 引用本文： | 蔡晓娇,徐德增,于维才,郭大生,朱湘萍.高黏度聚酯流变行为的研究[J].合成纤维工业,2013,36(1):17-19. |
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| 作者姓名： | 蔡晓娇 徐德增 于维才 郭大生 朱湘萍 |
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| 作者单位： | 1. 大连工业大学纺织与材料工程学院,辽宁大连,116034
2. 大连合成纤维研究设计院股份有限公司,辽宁大连,116023 |
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| 摘 要： | 采用毛细管流变仪研究了高黏度聚酯(PET)的表观黏度及黏流活化能随温度(280～300℃)及剪切速率(20～104s-1)的变化。结果表明:高黏度PET熔体随着剪切速率的增加出现切力变稀现象,随着熔体温度升高,剪切速率对熔体的表观黏度的影响降低;高黏度PET的黏流活化能随着剪切速率的提高而降低;在温度为300℃,剪切速率为3 000 s-1时,高黏度PET熔体具有较好的流动性。
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| 关 键 词： | 聚对苯二甲酸乙二酯 高黏度聚酯 流变性 表观黏度 黏流活化能 |
Rheological behavior of high-viscosity polyester |
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| Cai Xiaojiao
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Xu Dezeng
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Yu Weicai
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Guo Dasheng
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Zhu Xiangping.Rheological behavior of high-viscosity polyester[J].China Synthetic Fiber Industry,2013,36(1):17-19. |
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| Authors: | Cai Xiaojiao Xu Dezeng Yu Weicai Guo Dasheng Zhu Xiangping |
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| Affiliation: | 1.School of Textile and Material Engineering,Dalian Polytechnic University,Liaoning 116034; 2.Dalian Synthetic Fiber Research and Design Institute Co.,Ltd.,Dalian 116023) |
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| Abstract: | The change of the apparent viscosity and viscous flow activation energy of high-viscosity polyester(PET) with the temperature(280-300 ℃) and shear rate(20-104 s-1) was studied with a capillary rheometer.The results showed that the high-viscosity PET melt exhibited a shear thinning behavior while increasing the shear rate;the shear rate had a lower effect on the apparent viscosity of the melt while elevating the melt temperature;the viscous flow activation energy was decreased with the increase of shear rate;and the high-viscosity PET melt exhibited favorable fluidity at 300 ℃ and shear rate 3 000 s-1. |
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| Keywords: | polyethylene terephthalate high-viscosity polyester rheological behavior apparent viscosity viscous flow activation energy |
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