| 聚乙交酯及聚乙丙交酯的流变性能研究 |
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| 引用本文： | 徐纪刚,高建辉,陈功林,刘伯林,赵庆章.聚乙交酯及聚乙丙交酯的流变性能研究[J].合成纤维工业,2008,31(3). |
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| 作者姓名： | 徐纪刚 高建辉 陈功林 刘伯林 赵庆章 |
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| 作者单位： | 中国纺织科学研究院,北京,100025 |
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| 摘 要： | 采用毛细管流变仪研究了聚乙交酯(PGA)和聚乙丙交酯(PGLA)的流变性能,分析了剪切速率、温度对聚合物流体流动曲线、非牛顿指数、流动活化能等的影响。结果表明:PGA和PGLA都属于非牛顿型假塑性流体,随着温度的提高,PGA和PGLA的表观粘度降低,非牛顿指数逐渐增大。PGA和PGLA的流动活化能均随着剪切速率的增加呈下降趋势,PGLA流体对剪切速率更敏感,而PGA流体对温度更敏感。
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| 关 键 词： | 聚乙交酯 聚乙丙交酯 流变性能 非牛顿指数 流动活化能 |
Study on rheological behavior of polyglycollide and poly (glycolide lactide) |
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| Xu Jigang,Gao Jianhui,Chen Gonglin,Liu Bolin,Zhao Qingzhang.Study on rheological behavior of polyglycollide and poly (glycolide lactide)[J].China Synthetic Fiber Industry,2008,31(3). |
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| Authors: | Xu Jigang Gao Jianhui Chen Gonglin Liu Bolin Zhao Qingzhang |
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| Abstract: | The rheological behavior of polyglycollide(PGA)and poly(glycolide lactide)PGLA was studied with a capillary rheometer.The effects of the shearing rate and temperature on the flow curves,non-Newtonian index and flow activation energy of the polymers fluid were analyzed.The results showed that PGA and PGLA belonged to non-Newtonian pseudoplastic fluid;the apparent viscosity of PGA and PGLA was decreased and the non-Newtonian index was increased gradually while elevating the tem- perature;the flow activation energy showed a downward tendency while increasing the shearing rate;and PGLA fluid was more sensitive to the shearing rate when PGA fluid was more sensitive to temperature. |
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| Keywords: | polyglycollide poly(glycolide lactide) rheological behavior non-Newtonian index flow activation energy |
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