工艺与制造英文2022被引 1
树脂膜注入工艺：数值算法
Resin Film Infusion Process: Numerical Algorithm
Ahmed Ouezgan, Mouad Bellahkim, Said Adima, Aziz Maziri, El Hassan Mallil, Jamal Echaabi
摘要整理
液体复合材料模塑（LCM）是复合材料制造工艺的重要分支。该工艺将纤维织物预制体放入模腔中，用低粘度热固性树脂浸渍，直至纤维骨架完全填充，最后固化形成高分子复合材料制品。由于其优势显著，LCM工艺在复合材料制造中获得广泛关注。树脂膜注入（RFI）工艺属于LCM家族，但与树脂传递模塑（RTM）和真空辅助树脂注入（VARI）等工艺不同。RTM和VARI采用液态树脂注入或注射方式，而RFI工艺将半固化态树脂膜放入模腔中，在压力和温度作用下，树脂膜液化并沿厚度方向浸渍纤维增强体。这一特性使RFI工艺能够制造大型复杂复合材料结构，相比传统RTM工艺显著降低设备成本。然而，由于仅采用真空袋作为上半模具，制品存在厚度不均匀、尺寸公差低和纤维体积分数低等问题。本文提出一种数值算法，用于研究制品厚度对RFI填充时间的影响。数值模拟基于显式有限差分法。结果表明填充时间与制品厚度呈抛物线关系。
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