气体反压化学发泡注塑产品泡孔结构形成与演变过程的实验研究

doi:10.3976/j.issn.1002-4026.2020.02.006

山东科学 ›› 2020, Vol. 33 ›› Issue (2): 33-39.doi: 10.3976/j.issn.1002-4026.2020.02.006

气体反压化学发泡注塑产品泡孔结构形成与演变过程的实验研究

李帅¹，徐一涵¹，孙雪梅¹，麻晓飞^1*，孙成通¹，卢世伟¹，李洋²

1. 临沂大学机械与车辆工程学院，山东临沂 276005；2. 青岛海信模具有限公司，山东青岛 266114

收稿日期:2019-10-24 出版日期:2020-04-20 发布日期:2020-03-30
作者简介:李帅（1986—），男，博士，研究方向为发泡注塑。E-mail：lishuai@lyu.edu.cn
基金资助:
山东省重点研发计划重大科技创新工程（2019TSLH0102）；国家级大学生创新创业训练计划（201910452016）；临沂大学博士基金（40617014）

Experimental investigation of the formation and evolution processes of cell structure in gas counter pressure assisted chemical foaming injection molded parts

LI Shuai ¹, XU Yi-han¹,SUN Xue-mei ¹, MA Xiao-fei ^1*, SUN Cheng-tong ¹, LU Shi-wei¹, LI Yang ²

1. School of Mechanical &Vehicle Engineering, Linyi University, Linyi 276005, China; 2. Qingdao Hisense Mould Co., Ltd., Qingdao 266114, China

Received:2019-10-24 Online:2020-04-20 Published:2020-03-30

摘要/Abstract

摘要： 以标准拉伸样条为研究对象，系统探讨了气体反压工艺中反压压力和作用时间对化学发泡注塑成型过程中熔体发泡行为的影响。根据实验获得的结果，提出了前沿泡孔不破裂的临界反压压力、熔体不发泡的临界反压压力和二次发泡卸压时间，并揭示了气体反压技术对化学发泡注塑过程中熔体发泡行为的影响机理。

关键词: 发泡注塑, 气体反压技术, 发泡行为, 发泡机理

Abstract: Using standard stretch spline as the research object, the influence of gas counter pressure (GCP) and GCP holding time on melt-foaming behavior in chemical foaming injection molding (CFIM) process was investigated. Based on the results obtained from the experiment, the critical GCP pressure under which melt flow front cell was not cracking, the critical GCP pressure under which melt was not foaming, and the pressure release time of melt second foaming were proposed. Finally, the influence mechanism of GCP technology on melt foaming action during CFIM process was revealed.

Key words: foaming injection molding, gas counter pressure technology, foaming action, foaming mechanism

中图分类号:

TQ328.06

李帅, 徐一涵, 孙雪梅, 麻晓飞, 孙成通, 卢世伟, 李洋. 气体反压化学发泡注塑产品泡孔结构形成与演变过程的实验研究[J]. 山东科学, 2020, 33(2): 33-39.

LI Shuai , XU Yi-han, SUN Xue-mei, MA Xiao-fei, SUN Cheng-tong , LU Shi-wei, LI Yang. Experimental investigation of the formation and evolution processes of cell structure in gas counter pressure assisted chemical foaming injection molded parts[J]. Shandong Science, 2020, 33(2): 33-39.

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气体反压化学发泡注塑产品泡孔结构形成与演变过程的实验研究

Experimental investigation of the formation and evolution processes of cell structure in gas counter pressure assisted chemical foaming injection molded parts

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