中国塑料 ›› 2025, Vol. 39 ›› Issue (5): 1-8.DOI: 10.19491/j.issn.1001-9278.2025.05.001

• 材料与性能 •    下一篇

PP⁃CGFR/PP⁃LGFR热压⁃注塑一体成型制品力学性能分析

吴希然1,2(), 贾志欣2(), 刘立君2, 李继强2, 赵川涛1,2, 陈博杰3   

  1. 1.浙江大学机械工程学院,杭州 310012
    2.浙大宁波理工学院机电与能源工程学院,浙江 宁波 315100
    3.宁波市计量测试研究院,浙江 宁波 315100
  • 收稿日期:2024-07-10 出版日期:2025-05-26 发布日期:2025-04-26
  • 通讯作者: 贾志欣(1970—),女,教授,从事复合材料成型工艺优化、模具技术、模具表面激光强化研究,jzx@nit.zju.edu.cn
    E-mail:22225153@zju.edu.cn;jzx@nit.zju.edu.cn
  • 作者简介:吴希然(2000—),男,研究生,从事复合材料热压⁃注塑一体成型工艺研究,22225153@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 mechanical properties of PP⁃CGFR/PP⁃LGFR⁃integrated over⁃molding products

WU Xiran1,2(), JIA Zhixin2(), LIU Lijun2, LI Jiqiang2, ZHAO Chuantao1,2, CHEN Bojie3   

  1. 1.School of Mechanical Engineering,Zhejiang University,Hangzhou 310012,China
    2.School of Mechatronics and Energy Engineering,NingboTech University,Ningbo 315100,China
    3.Ningbo Institute of Measurement and Testing,Ningbo 315100,China
  • Received:2024-07-10 Online:2025-05-26 Published:2025-04-26
  • Contact: JIA Zhixin E-mail:22225153@zju.edu.cn;jzx@nit.zju.edu.cn

摘要:

采用玻璃纤维增强聚丙烯制备热压⁃注塑一体成型制品,通过正交实验分析影响拉伸强度和弯曲强度的显著性因素,分析工艺参数对制品力学性能的影响;研究了不同工艺参数下的拉伸和弯曲失效模式,并对失效断面进行微观形貌观察,建立了成型工艺参数、微观结构及制品力学性能之间的关系。结果表明,影响制品拉伸强度的显著性因素为预热温度、保压压力、模具温度,影响制品弯曲强度的显著性因素是预热温度、熔体温度、保压压力,制品有机片材与注塑材料的结合强度和有机片材纤维⁃树脂结合程度是影响制品力学性能的主要因素。

关键词: 聚丙烯, 玻璃纤维, 热压?注塑一体成型, 力学性能, 微观结构

Abstract:

Glass⁃fiber⁃reinforced polypropylene was used to prepare integrated over⁃molding products. The significant factors affecting tensile strength and bending strength of the molded products were investigated by an orthogonal experiment, and the influence of process parameters on their mechanical properties was analyzed. Furthermore, the tensile and bending failure modes of the molded products under different process parameters were discussed, the microscopic morphology of their failure section was observed, and the correlations between their molding process and microstructure and mechanical properties were established. The results indicated that the significant factors affecting the tensile strength included the preheating temperature, holding pressure, and mold temperature. The significant factors affecting the bending strength were the preheating temperature, holding pressure, and melt temperature. The bonding strength between organic sheets and injection molding materials and the degree of fiber⁃resin bonding of the organic sheet were the main factors affecting the mechanical properties of the molded products.

Key words: polypropylene, glass fiber, integrated over?molding, mechanical property, microstructure

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