复合材料科学与工程 ›› 2025, Vol. 0 ›› Issue (3): 63-70.DOI: 10.19936/j.cnki.2096-8000.20250328.009

• 设计与工艺 • 上一篇    下一篇

碳纤维/环氧树脂复合材料拉挤固化过程的数值模拟研究

冯京1, 张鹏翔3, 姜悦2, 朱立平1*, 李爽2, 席剑飞3   

  1. 1.南京玻璃纤维研究设计院有限公司,南京 210012;
    2.中材科技(阜宁)风电叶片有限公司,盐城 224400;
    3.南京师范大学 能源与机械工程学院,南京 210023
  • 收稿日期:2023-12-19 出版日期:2025-03-28 发布日期:2025-04-21
  • 通讯作者: 朱立平(1984—),男,博士,高级工程师,长期从事高性能纤维及复合材料的数值模拟研究,zhuliping@fiberglasschina.com。
  • 作者简介:冯京(1993—),男,硕士,工程师,主要从事复合材料成型的数值模拟研究。
  • 基金资助:
    江苏省碳达峰碳中和科技创新专项资金(BE2022008)

Numerical simulation study on the pultrusion curing process of carbon fiber/epoxy resin composite materials

FENG Jing1, ZHANG Pengxiang3, JIANG Yue2, ZHU Liping1*, LI Shuang2, XI Jianfei3   

  1. 1. Nanjing Fiberglass Research & Design Institute Co., Ltd., Nanjing 210012, China;
    2. Sinoma Wind Power Blade(Funing) Co., Ltd., Yancheng 224400, China;
    3. School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing 210023, China
  • Received:2023-12-19 Online:2025-03-28 Published:2025-04-21

摘要: 在复合材料拉挤成型过程中,其内部温度与树脂的固化速率的变化呈现出一组强耦合关系。根据复合材料固化过程的非稳态热传导和固化动力学理论建立二维模型,系统开展了不同拉挤工况对固化过程的影响研究。数值模拟结果表明,在相同条件下,增大树脂体积分数、提升壁面温度、适当提升拉挤速度均可以促进固化过程。相较于基准案例,当树脂体积分数增大为0.5、壁面温度提高到220 ℃、拉挤速度提升到0.9 m/min时,固化时间分别缩短了约25%、67%、47%。复合材料的有效热导率和固化反应动力学参数对材料的温度场和固化度场影响很大,主导着复合材料的拉挤固化过程。本文研究结果为优化拉挤工艺、确定合理的工艺参数提供了一定的理论依据。

关键词: 碳纤维, 拉挤固化工艺, 固化反应动力学, 数值模拟

Abstract: In the pultrusion process of composite materials, the internal temperature and the curing rate of the resin show a set of strong coupling relationships. According to the theory of unsteady heat conduction and curing dynamics during the curing process of composite materials, a two-dimensional model was established, and systematically carried out different working condition of pultrusion research on the influence of the curing process. The numerical simulation results showed that under the same conditions, increasing the volume fraction of resin, increasing the wall temperature and increasing the pultrusion speed can promote the curing process. Compared with the benchmark case, when the volume fraction of resin increases to 0.5, wall temperature to 220 ℃, pultrusion speed up to 0.9 m/min, the curing time was reduced by about 25%, 67% and 47% respectively. The effective thermal conductivity and curing reaction kinetic parameters of the composite have great influence on the temperature field and curing degree field, which dominate the pultrusion curing process of the composite. The research results in this paper provide a theoretical basis for optimizing pultrusion process and determining reasonable process parameters.

Key words: carbon fiber, pultrusion curing process, curing reaction kinetics, numerical simulation

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