基于流体力学三大控制方程和幂律粘性本构,针对水辅共注充填过程的特点,经合理假设与简化,建立了二维、瞬态、纯黏性、非等温的理论模型以及水辅共注填充过程中熔体相和水相的数学模型.采用有限体积法对整个水辅共注成型的填充过程进行模拟,研究注水延迟时间对熔体层和水层的分布影响.结果表明,随着注水延迟时间的延长,所需的注水压力增大,芯层熔体平均厚度增加,均匀度更好；同时水的穿透深度变大,宽度变小.
参考文献
| [1] | S. C. Chen;N. T. Chen;K. S. Hsu;K. F. Hsu .Study of Polymer Melt Flow in Sequential Injection Molding Process[J].AIChE Journal,1996(6):1706-1714. |
| [2] | Schlatter G;Davidoff A;Vincent M;Agassant JF .An unsteady multifluid flow model: application to sandwich injection molding process[J].Polymer engineering and science,1999(1):78-88. |
| [3] | 周国发,孙懋.聚合物全三维非稳态非等温多相分层流动成型过程的理论模型和数值模拟[J].机械工程学报,2004(09):16-22,27. |
| [4] | A. Polynkin;L. Bai;J. F. T. Pittman .Water assisted injection moulding: development of insights and predictive capabilities through experiments on instrumented process in parallel with computer simulations[J].Plastics, Rubber and Composites,2008(2/3/4):131-141. |
| [5] | S.-J.Liu;M.-H.Hsieh .Residual Wall Thickness Distribution at the Transition and Curve Sections of Water-assisted Injection Molded Tubes[J].International Polymer Processing: The Journal of the Polymer Processing Society,2007(1):82-89. |
| [6] | 周国发,苏婷,闫丽.聚合物水辅共注成型过程数值模拟研究[J].中国塑料,2008(01):58-62. |
| [7] | 刘旭辉,黄汉雄.工艺参数对水辅助注塑弯曲圆管内径的影响[J].现代塑料加工应用,2011(01):32-35. |
| [8] | 周润恒,黄汉雄,刘旭辉,何建民.水辅助注塑制品残留壁厚和穿透长度影响因素的研究[J].中国塑料,2008(03):52-56. |
| [9] | 刘旭辉,黄汉雄.工艺参数对水辅助熔体充模流动的影响[J].化工学报,2011(02):520-524. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%