| 高密度聚乙烯熔体拉伸流动特性分析 |
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| 引用本文： | 钟磊,梁基照.高密度聚乙烯熔体拉伸流动特性分析[J].华侨大学学报(自然科学版),2010,31(2). |
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| 作者姓名： | 钟磊 梁基照 |
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| 作者单位： | 广州华南理工大学,机械与汽车工程学院,广东,广州,510640 |
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| 基金项目： | 广西青年自然科学基金资助项目(0542018) |
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| 摘 要： | 基于PTT(Phan-Thien-Tanner)模型,将温度引入结点破坏率H函数中,构建新的聚合物流体本构方程.应用该方程,分析温度对聚乙烯熔体拉伸流动中拉伸应力和拉伸粘度的影响.结果显示,随着温度的升高,熔体的拉伸应力和拉伸粘度都随之下降.
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| 关 键 词： | 聚乙烯熔体 拉伸流动 PTT模型 生成率 温度 |
Analysis of Elongation Flow Properties of High Density Polyethylene Melt |
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| ZHONG Lei,LIANG Ji-zhao.Analysis of Elongation Flow Properties of High Density Polyethylene Melt[J].Journal of Huaqiao University(Natural Science),2010,31(2). |
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| Authors: | ZHONG Lei LIANG Ji-zhao |
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| Institution: | School of Mechanical & Automotive Engineering;South China University of Technology;Guangzhou 510640;China |
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| Abstract: | Temperature as a parameter was considered in H function with respect to the node destroying rate and a new constitutive equation for the polymer fluid was proposed based on Phan-Thien-Tanner(PTT) model.The effects of temperature on stress and viscosity during elongation flow of high density polyethylene melt were analyzed by use of the equation.The results showed that both the stress and extensional viscosity decreased with a rise of temperatures. |
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| Keywords: | polyethylene melt elongation flow Phan-Thien-Tanner model formation rate temperature |
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