China Plastics ›› 2024, Vol. 38 ›› Issue (3): 59-66.DOI: 10.19491/j.issn.1001-9278.2024.03.011

• Processing and Application • Previous Articles     Next Articles

Analysis of influencing factors of warpage deformation of epoxy/carbon fiber composite⁃molded products

ZHAO Chuantao1,2(), JIA Zhixin2(), LIU Lijun2, LI Jiqiang2, ZHANG Chenchen1,2, RONG Di1,2, GAO Lizhen2,3, YAO Jier4   

  1. 1.School of Mechanical Engineering,Zhejiang University,Hangzhou 310012,China
    2.Ningbo Tech University,Ningbo 315100,China
    3.Zhejiang Sci?Tech University,Hangzhou 310018,China
    4.Ningbo Tianlong Electronics Co,Ltd,Ningbo 315336,China
  • Received:2023-08-14 Online:2024-03-26 Published:2024-03-28

Abstract:

This article addressed the issue of warping deformation in epoxy resin/carbon fiber sheet⁃molded composite flat panel products., the flatness of the panel products was measured to characterize the extent of warping deformation by using a three⁃coordinate measurement device. The results indicated that the warping deformation varied from 0.302 to 1.29 mm. Through an orthogonal experimental variance analysis, the significance of various molding process parameters on warping deformation was determined with molding pressure having the most significant impact, followed by demolding speed, holding pressure time, and molding temperature. Furthermore, a Duncan's multiple comparison method was used to assess the differences in the significance levels among these factors, the trends in the influence of each process parameter on warping deformation in the products was further analyzed. The mechanism of influence factors for the warping of the products was analyzed, and these factors include fiber distribution, pore characteristics, upper and lower mold temperatures, and cavity pressure distribution.

Key words: epoxy, carbon, sheet molding compound, compression molding, warping deformation

CLC Number: