中国塑料 ›› 2025, Vol. 39 ›› Issue (5): 50-56.DOI: 10.19491/j.issn.1001-9278.2025.05.008

• 加工与应用 • 上一篇    下一篇

复合材料热压注塑一体成型平板制品翘曲变形影响因素分析

应祺辉1,2(), 贾志欣1(), 高利珍1,3, 刘立君1, 李继强1, 吴希然1,2, 陈博杰4   

  1. 1.浙大宁波理工学院机电与能源工程学院,浙江 宁波 315100
    2.浙江大学机械工程学院,杭州 310012
    3.浙江理工大学机械工程学院,杭州 310018
    4.宁波市计量测试研究院,浙江 宁波 315100
  • 收稿日期:2024-06-19 出版日期:2025-05-26 发布日期:2025-05-22
  • 通讯作者: 贾志欣(1970—),女,教授,从事复合材料成型工艺及模具技术、模具表面激光强化研究,jzx@nit.zju.edu.cn
    E-mail:22225151@zju.edu.cn;jzx@nit.zju.edu.cn
  • 作者简介:应祺辉(1999—),男,研究生,从事复合材料热压⁃注塑一体成型工艺研究,22225151@zju.edu.cn
  • 基金资助:
    宁波市重点研发计划暨“揭榜挂帅”项目(2022Z044);浙江省市场监督管理局科技计划项目(ZC2023061)

Analysis of factors affecting warping and deformation of composite⁃integrated over⁃molding flat products

YING Qihui1,2(), JIA Zhixin1(), GAO Lizhen1,3, LIU Lijun1, LI Jiqiang1, WU Xiran1,2, CHEN Bojie4   

  1. 1.School of Mechatronics and Energy Engineering,NingboTech University,Ningbo 315100,China
    2.School of Mechanical Engineering,Zhejiang University,Hangzhou 310012,China
    3.School of Mechanical Engineering,Zhejiang Sci?Tech University,Hangzhou 310018,China
    4.Ningbo Institute of Measurement and Testing,Ningbo 315100,China
  • Received:2024-06-19 Online:2025-05-26 Published:2025-05-22
  • Contact: JIA Zhixin E-mail:22225151@zju.edu.cn;jzx@nit.zju.edu.cn

摘要:

热压⁃注塑一体成型复合了热压工艺和注塑工艺,一体成型制品因材料收缩率的不同,冷却定型后形成中间凹四边翘曲的“碗形”结构。为了研究预浸料预热时间、模具温度、熔体温度、注射速度、注射压力和保压压力,设计正交实验,分析工艺参数对复合制品翘曲变形的影响规律。结果表明,预热时间对翘曲变形有显著影响,而注射速度的影响较小。通过信噪比极差分析可知,各因素对复合制品翘曲量影响程度的主次排序为:预热时间>保压压力>注射压力>熔体温度>模具温度>注射速率,并获得了制造较小翘曲量复合制品的最优工艺参数。

关键词: 复合材料, 翘曲变形, 工艺参数, 一体成型, 信噪比

Abstract:

Integrated over⁃molding is based on a combination of hot press and injection molding processes. Owing to the different shrinkage rates of materials, the molded products formed a “bowl⁃shaped” structure with a concave center and warped sides after cooling and shaping. To investigate the preheating time of prepregs, mold temperature, melt temperature, injection speed, injection pressure and holding pressure, an orthogonal experiment was designed to analyze the influence of process parameters on the warping and deformation of the molded products. The results indicated that the preheating time had a significant effect on the warpage deformation, whereas the injection speed showed a smaller effect. Through the signal⁃to⁃noise ratio analysis, the influence of each factor on the warpage of composite products was followed by by an order of preheating time>holding pressure>injection pressure>melt temperature>mold temperature>injection speed. The optimal process parameters were obtained for manufacturing composite products with small warpage.

Key words: composite material, warp deformation, process parameter, integrated over?molding, signal?to?noise ratio

中图分类号: