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对于复杂曲面结构件的树脂传递模塑(RTM)成型工艺，纤维增强体铺覆是影响产品质量和性能的关键。RTM成型中，纤维取向偏差、纤维集束及褶皱等现象易导致结构件翘曲、变形，以及力学性能降低等问题。为此，研究设计分层预成型技术以降低层间剪切应力，采用凸模、磁铁与胶带相结合的三级固定技术以提高铺覆精度，优化凸模安装顺序以避免纤维过度张紧，通过精确控制纤维集束位置并与模具“宽敞”区域对齐以优化树脂浸润效果，剪除余边以减小残余应力。结果显示，这些改进措施有效提升了纤维增强体的铺覆质量，显著改善了RTM成型结构件的整体性能，为该工艺的工业化应用提供了有力支持。
Abstract：For the resin transfer molding(RTM) process of complex-curved structural components, the lay-up of fiber reinforcement is crucial to product quality and performance. During RTM molding, phenomena such as fiber orientation deviation, fiber bundling, and wrinkling can easily lead to issues like part warping, deformation, and degradation of mechanical properties. To address these problems, a hierarchical preforming technology was studied and designed to reduce interlaminar shear stress. A three-stage fixing technique combining punches, magnets, and adhesive tape was adopted to enhance lay-up accuracy. The installation sequence of punches was optimized to prevent excessive fiber tensioning. By precisely controlling the fiber bundling positions and aligning them with the ‘spacious' areas of the mold, resin infiltration was optimized. And excess edges were trimmed to reduce residual stress. The results showed that these improvement measures effectively enhanced the lay-up quality of the fiber reinforcement and significantly improved the overall performance of RTM formed structural components, providing strong support for the industrial application of this process.
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基本信息:
DOI：
中图分类号:TB332;TS941.731.8
引用信息:
[1]张明卓,赵宇,吴国建,等.RTM成型头盔外壳纤维增强体铺覆方法研究[J].产业用纺织品,2025,43(11):9-16.
基金信息:
襄阳市科技计划项目(2021AAS003135)