| 牵引拉伸对微挤出成型影响分析 |
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| 引用本文： | 傅志红,肖雄辉,陈玉辉. 牵引拉伸对微挤出成型影响分析[J]. 中国塑料, 2013, 27(1): 87-91. DOI: 10.19491/j.issn.1001-9278.2013.01.017 |
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| 作者姓名： | 傅志红 肖雄辉 陈玉辉 |
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| 作者单位： | 中南大学机电工程学院高性能复杂制造国家重点实验室，湖南长沙410083 |
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| 基金项目： | 长沙市科技计划项目(K1003042-11) |
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| 摘 要： | 研究了聚合物挤出过程拉伸作用对口模出口处流体体系的形态、流变性能的影响。利用Polyfow软件对微管挤出成型过程进行数值模拟，分析了牵引拉伸作用对压力场、速度场及挤出胀大、边界位置变化的影响。结果表明，随着牵引速度的增大，人日压力降低;牵引速度对日模内速度场及挤出胀大影响较小，而对制品在挤出过程中截面尺寸的变化有明显影响。
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| 关 键 词： | 牵引速度 微挤出成型 挤出胀大 数值分析 |
| 收稿时间： | 2012-08-29 |
Analysis of the Influence of Drawing Effect on Micro-extrusion Molding |
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| FU Zhihong,XIAO Xionghui,CHEN Yuhui. Analysis of the Influence of Drawing Effect on Micro-extrusion Molding[J]. China Plastics, 2013, 27(1): 87-91. DOI: 10.19491/j.issn.1001-9278.2013.01.017 |
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| Authors: | FU Zhihong XIAO Xionghui CHEN Yuhui |
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| Affiliation: | State Key Laboratory of High Performance Complex Manufacturing, School of Mechanicaland Electrical Engineering, Central South University, Changsha 410083，China |
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| Abstract: | The influence of drawing on the morphological and rheological property of polymer fluid system near the die exit during extrusion was studied. Numerical simulation of micro-tube extrusion was carried out using software POLYFLOW for analyzing the pressure field, velocity field，the extrusion swelling，and the change of boundary position. The study also showed that as the drawing velocity increased, the inlet pressure extrudate was affected significantly, however，the little affected. reduced，the shape of cross-section of the |
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| Keywords: | drawing velocity micro-extrusion；extrusion swelling numerical analysis |
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