中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2016, Vol. 35 ›› Issue (4): 173-178.DOI: 10.3969/j.issn.1674-0696.2016.04.34

• 车辆与机电工程 • 上一篇    下一篇

纤维增强薄壁塑件翘曲变形分析

张继祥,殷筱依,刘凤芝,杨泮   

  1. (重庆交通大学 机电与汽车工程学院,重庆 400074)
  • 收稿日期:2015-06-20 修回日期:2015-11-10 出版日期:2016-08-20 发布日期:2016-08-20
  • 作者简介:第一作者:张继祥(1971—),男,山东单县人,教授,博士,主要从事塑料成型技术研究及模具设计方面的工作。E-mail:jixiangzhang@163.com。

The Analysis of the Warpage of Thin-wall Plastic Part for Fiber Reinforced Plastic

ZHANG Jixiang, YIN Xiaoyi, LIU Fengzhi, YANG Pan   

  1. (School of Mechatronics & Avechicle Engineering, Chongqing Jiaotong University, Chongqing 400074,P.R.China)
  • Received:2015-06-20 Revised:2015-11-10 Online:2016-08-20 Published:2016-08-20

摘要: 选取平均壁厚为1 mm薄壁塑件为研究对象,并选取不同玻璃纤维含量的塑料,以塑件翘曲变形最小为优化目标,采用模流分析软件Moldflow并结合正交实验法分析研究了玻纤含量和模具温度、熔体温度、注射时间等工艺参数对塑件翘曲变形的影响,得到了最优的工艺参数组合和玻纤含量。结果表明:玻纤含量和注射时间是影响塑件翘曲变形的显著因素。使塑件翘曲变形最小的注塑成型工艺方案为模具温度65 ℃、熔体温度260 ℃、注射时间2 s、保压压力85 MPa、保压时间4 s、玻纤含量10%。适当的玻纤含量可以明显减小薄壁塑件的翘曲变形。

关键词: 车辆工程, 薄壁塑件, 翘曲变形, 正交实验, 玻纤含量

Abstract: The thin-wall plastic part with average thickness of 1 mm was selected as the researched object, and plastics of different glass fiber content were selected. Aiming at achieving minimum warpage, and the mold flow analysis software Moldflow combined with the orthogonal experimental method was used to study the effects on the warpage of the plastic part due to glass fiber content and mold temperature, melt temperature, injection time and other parameters, and the optimal process parameters combination and glass fiber content were obtained. The results showed that glass fiber content and injection time are significant factors affecting the warpage of the plastic part. The injection molding process scheme which generated minimum warpage of the plastic parts smallest is one at mold temperature 65 ℃, melt temperature 260 ℃, injection time 2 s, packing pressure 85 MPa, packing time 4 s, and glass fiber content 10%. It is concluded that appropriate content of glass fiber can obviously reduce the warpage of the thin-wall plastic part.

Key words: vehicle engineering;thin-wall plastic part, warpage, orthogonal experiment, glass fiber content

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