| 微型挤出过程中熔体流变行为的模拟分析 |
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| 引用本文： | 刘斌,岳潼雁,吴明星.微型挤出过程中熔体流变行为的模拟分析[J].塑料工业,2011,39(2). |
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| 作者姓名： | 刘斌 岳潼雁 吴明星 |
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| 作者单位： | 华南理工大学聚合物成型加工工程教育部重点实验室,聚合物新型成型装备国家工程研究中心,广东,广州,510640 |
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| 摘 要： | 首先介绍了应用于熔融沉积快速成型中的微型挤出喷头的结构特点;随后根据微型螺杆的挤出特性,分别对螺杆段和口模段的熔体流变行为进行模拟分析,从而得出影响熔体流变行为的因素.结果表明,熔体流率受螺杆转速影响较大,压力降主要出现在口模附近,在喷嘴中靠近壁面处存在熔体滞留区.
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| 关 键 词： | 微型挤出 熔体 流变行为 模拟分析 |
Simulation Analysis of Rheological Behavior of Plastic Melt in Micro-extrusion |
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| LIU Bin,YUE Tong-yan,WU Ming-xing.Simulation Analysis of Rheological Behavior of Plastic Melt in Micro-extrusion[J].China Plastics Industry,2011,39(2). |
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| Authors: | LIU Bin YUE Tong-yan WU Ming-xing |
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| Affiliation: | LIU Bin,YUE Tong-yan,WU Ming-xing(The Key Laboratory of Polymer Processing Engineering of Ministry of Education,National Engineering Research Center of Novel Equipment for Polymer Processing,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | The structure features of the micro-extrusion spray head used in fused deposition modeling system were introduced firstly,then the melt rheological behavior in the screw and nozzle was simulated respectively by Polyflow to get the factors which influenced the melt rheological behavior.The result showed that the melt flow rate was heavily influenced by the screw rotate speed,nozzle pressure was lost mainly around the die,and there were melt stagnation areas near the barrel wall in the nozzle. |
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| Keywords: | Micro-extrusion Melt Rheological behavior Simulation analysis |
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