Research on Injection Molding Simulation and Process Parameters of EPDM Coating

被引：0
|
作者：
Liu B.-B. [1 ,2 ]
Zhang H. [3 ]
Li J.-Q. [4 ]
Chen G.-H. [4 ]
Yang S.-S. [4 ]
Peng J. [5 ]
He J.-Y. [1 ,2 ]
Li X.-M. [1 ,2 ]
Yang R.-J. [1 ,2 ]
机构：
[1] School of Material Science and Engineering, Beijing Institute of Technology, Beijing
[2] National Engineering Research Center of Flame Retardant Material, Beijing
[3] Beijing Institute of Aerospace Experiment Technology, Beijing
[4] Xi'an Modern Chemistry Research Institute, Xi'an
[5] School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing
来源：
Huozhayao Xuebao/Chinese Journal of Explosives and Propellants | 2022年 / 45卷 / 01期
关键词：
Applied chemistry; EPDM coating; EPDM rubber; Molding simulation; Process parameters; Rheological equation;
D O I：
10.14077/j.issn.1007-7812.202103005
中图分类号：
学科分类号：
摘要：
In order to improve the development efficiency of ethylene propylene diene monomer (EPDM) rubber coating injection molding process, the flow law of EPDM was studied by combination of numerical simulation and experimental verification and appropriate process parameters were optimized. The rheological properties of EPDM were modeled using the Carreau mode, which was introduced into Moldflow software to simulate the injection molding process of EPDM coating. The simulation obtains the appropriate gate position, and predicts the air pocket, weld line position and the change of front temperature, which is consistent with the experiment. Airhole are easy to form at the top of the arc, and the choice of side-symmetrical double injection ports is more conducive to molding. The influence of temperature, pressure and flow rate on the filling process was analyzed, and preliminary prediction molding parameters were obtained. On the basis of the fitting results, the process parameters of qualified products were further verified by experiments. The influence of the selected pressure and injection rate on the quality of coated products was studied by tensile test. The results show that the appropriate process parameters are as follows: injection temperature 170℃, chrome-plating mold temperature 170℃, maximum injection pressure 30MPa, injection volume 148cm3, and injection rate 12mm/s. © 2022, Editorial Board of Journal of Explosives & Propellants. All right reserved.
引用
收藏
页码：103 / 108
页数：5
相关论文
共 10 条
  • [1] PARK S J, CHOI S, Et al., Study on the improvement of adhesion strength between composite solid propellant, liner, and heat-resistant material, Propellants, Explosives, Pyrotechnics, 45, 8, pp. 1227-1233, (2020)
  • [2] LI Junqiang, XIAO Xiao, LIU Qing, Effect of HEX- (2, 4, 6-tribromophenoxy)cyclotriphosphonitrile on coating properties of solid propellant EPDM rubber, Chinese Journal of Explosives & Propellants(Huozhayao Xuebao), 42, 3, pp. 289-294, (2019)
  • [3] FETECAU C, DOBREA D, Et al., Overmolding injection molding simulation of tensile test specimen, International Journal of Modern Manufacturing Technologies, 2, 2, pp. 45-50, (2010)
  • [4] SUN Wei, Research and trend of rubber injection molding technology, Technology and Innovation, 22, (2016)
  • [5] GUO Lina, Numerical simulation of injection molding and mold structure improvement for automotive triangular window seals, (2015)
  • [6] LI Peng, Li Jun-qiang, LIU Chen, Et al., Study on rheological vulcanization properties of EPDM coating layer and injection molding process, New Chemical Materials, 48, 1, pp. 232-236, (2020)
  • [7] WANG Hong-xia, WU Yan-hua, Causes of injection product defects and case analysis, Mold Technology, 6, pp. 57-60, (2019)
  • [8] TRAD Mohamed Aziz Ben, Et al., Numerical simulation and experimental investigation of mold filling and segregation in low-pressure powder injection molding of metallic feedstock, Advanced Powder Technology, 31, 3, pp. 1349-1358, (2020)
  • [9] GANGULY S, DAS N C., Rheological Properties of Polymer Carbon Composites, pp. 271-294, (2019)
  • [10] (2012)
1