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<p>Composites are among the most commonly used raw materials for automotive lightweighting and could be used to manufacture automotive parts through the integrated overmolding process. The mechanical properties of the composite products were affected by the parameters of the hot pressing process. In this paper, the mechanical properties of continuous glass fiber reinforced polypropylene (CGFRPP) composite products were investigated by orthogonal tests of process parameters. The results of the orthogonal experiments were processed by using the ANOVA method and K-mean cluster analysis. The relationship between molding process, microstructure and product performance was established by studying the influence of process parameters on the mechanical properties and microstructure of the skeleton. Multi-objective optimization of the process parameters resulted in 27.09 %, 23.35 % and 13.73 % optimization for tensile strength, flexural strength and interlaminar shear strength, respectively.</p>

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Effect of hot pressing process parameters on the mechanical properties of integrated overmolded CGFRPP skeleton

  • 期刊论文

  • 发表日期：

    2025年9月4日

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  • Qihui Ying,
  • Zhixin Jia,
  • Di Rong,
  • Lijun Liu,
  • Jiqiang Li

摘要

Composites are among the most commonly used raw materials for automotive lightweighting and could be used to manufacture automotive parts through the integrated overmolding process. The mechanical properties of the composite products were affected by the parameters of the hot pressing process. In this paper, the mechanical properties of continuous glass fiber reinforced polypropylene (CGFRPP) composite products were investigated by orthogonal tests of process parameters. The results of the orthogonal experiments were processed by using the ANOVA method and K-mean cluster analysis. The relationship between molding process, microstructure and product performance was established by studying the influence of process parameters on the mechanical properties and microstructure of the skeleton. Multi-objective optimization of the process parameters resulted in 27.09 %, 23.35 % and 13.73 % optimization for tensile strength, flexural strength and interlaminar shear strength, respectively.