工艺与制造英文2021被引 13
非织造亚麻垫制造工艺参数和固化压力对真空辅助树脂传递模塑复合材料性能的影响
Effect of <scp>non‐woven</scp> flax mat manufacturing parameters and consolidation pressure on properties of composites manufactured using vacuum‐assisted resin transfer molding
Md Shadhin, Raghavan Jayaraman, Mashiur Rahman · Research Manitoba
摘要整理
真空辅助树脂传递模塑（VARTM）工艺采用非织造玻纤垫制造运输工业用复合材料零件，其工艺已针对浸渍性、纤维体积分数（Vf）和复合材料性能进行了优化。然而，优化的麻纤维和亚麻垫尚不可得。本研究在气流铺层制造麻垫研究的基础上，系统研究了针刺深度（2 mm或8 mm）、打孔密度（0~72 punches/cm²）和固化压力（101~560 kPa）对非织造亚麻垫渗透性及复合材料性能的影响。结果表明，非织造亚麻垫在面密度（GSM）和纤维分布的空间分布上存在不均匀性，加之亚麻纤维直径和性能的差异，导致复合材料性能测量结果离散度较大。随着打孔密度和针刺深度的增加，垫的面外渗透性和固化程度均下降，结合起始垫中Vf的变化，导致复合材料中Vf呈现复杂变化规律。纤维结合紧密的30-P垫在VARTM低压力（101 kPa）条件下获得最优复合材料性能，而纤维结合松散的0-P和72-P垫则在高压力（560 kPa）条件下获得最优性能。研究结果为亚麻纤维增强复合材料的VARTM工艺优化提供了重要参考。
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