Three-dimensional numerical and experimental investigations on polymer rheology in meso-scale injection molding

被引：47
|
作者：
Khor, C. Y. [1 ]
Ariff, Z. M. [2 ]
Ani, F. Che [3 ]
Mujeebu, M. Abdul [1 ]
Abdullah, M. K. [1 ]
Abdullah, M. Z. [1 ]
Joseph, M. A. [4 ]
机构：
[1] Univ Sains Malaysia, Sch Mech Engn, Nibong Tebal 14300, Penang, Malaysia
[2] Univ Sains Malaysia, Sch Mat & Mineral Resources, Nibong Tebal 14300, Penang, Malaysia
[3] Celest Sdn Bhd, Kulim, Kedah, Malaysia
[4] Natl Inst Technol Calicut, Dept Mech Engn, Calicut, Kerala, India
来源：
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2010年 / 37卷 / 02期
关键词：
Injection molding; Polymer rheology; Volume of Fluid (VOF); Cross model; CAPILLARY RHEOMETER; FLOW VISUALIZATION; FILLING SIMULATION; NATURAL-RUBBER; SHEAR-RATE; TEMPERATURE; MODEL; MELTS; INSTABILITIES; EXTRUSION;
D O I：
10.1016/j.icheatmasstransfer.2009.08.011
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Three-dimensional simulation and experimental investigation of polymer rheology in a miniature injection molding process is presented. The material used in the study is ABS plastic, Toyolac 250-X10 and tests are carried out at different temperatures of the molten thermoplastic which is injected into the mold cavity. FLUENT 6.3 software is used in the simulation to verify the viscosity model (Cross model) and the Volume of Fluid (VOF) method is applied for the melt front tracking. The model is validated by means of experiments performed by using Davenport High Shear Viscometer with injection nozzle. It has been observed that there exists an optimum combination of temperature viscosity and shear rate for the selected injection molding process. Accordingly, the temperature range 200-260 degrees C and shear rate 10(2)-10(4) s(-1) are found good for the process. The mold flow profiles for various temperatures and time steps are also presented. The experimental and the simulation results are in good conformity and the strength of FLUENT 6.3 in handling injection mold filling problems is proved to be excellent. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：131 / 139
页数：9
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