| 低熔点共聚酯的流变性研究 |
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| 引用本文： | 齐庆莹,秦伟明,陈文兴.低熔点共聚酯的流变性研究[J].合成纤维,2008,37(8). |
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| 作者姓名： | 齐庆莹 秦伟明 陈文兴 |
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| 作者单位： | 浙江理工大学,材料与纺织学院,浙江,杭州,310018 |
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| 基金项目： | 浙江省科技攻关项目，教育部长江学者和创新团队发展计划 |
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| 摘 要： | 由对苯二甲酸(PTA)、间苯二甲酸(IPA)、丁二醇(BDO)共缩聚制备了低熔点共聚酯。采用Rosand RH7型毛细管流变仪对不同摩尔百分比组成的共聚酯的流变性进行了研究。结果显示:低熔点共聚酯是典型的假塑性流体,随着温度升高,剪切黏度下降,非牛顿指数增大;随着剪切速率的增大,低熔点共聚酯黏流活化能降低。比较了两种组成的低熔点共聚酯的流变性,发现随着第三单体IPA的增加,低熔点共聚酯的剪切黏度降低,非牛顿指数减小。分析了第三单体对低熔点共聚酯流变行为的影响。
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| 关 键 词： | 低熔点共聚酯 流变性 第三单体 非牛顿指数 黏流活化能 |
Study on Rheological Behavior of Low Melting Point Copolyester |
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| QI Qing-ying,QIN Wei-ming,CHEN Wen-xing.Study on Rheological Behavior of Low Melting Point Copolyester[J].Synthetic Fiber in China,2008,37(8). |
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| Authors: | QI Qing-ying QIN Wei-ming CHEN Wen-xing |
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| Abstract: | The low melting point copolyester was synthesized by the copolycondensation of PTA,IPA,BDO.The rheological behaviors of the low melting point copolyester were studied with Rosand RH7 capillary rheometer.The result showed that the low melting point copolyester was a tipical pseudoplastic fluids,the shear viscosity of copolyester declined and the non-Newton index increased with the increasing of temperature.The visco-flow activition energy declined with the increasing of shear rate.Comparing with the two different composition copolyesters,it was found that the shear viscosity and non-Newton index of copolyesters decreasd with increasing of third monomer IPA.The fluences of the third monomer on rheological behavior of low melting point copolyester was investigated. |
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| Keywords: | low melting point copolyester rheological behavior the third monomer non-Newton index visco-flow activation energy |
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