工艺与制造英文2024被引 3
采用深共晶点固化剂的真空辅助树脂注入工艺制备阻燃玻纤增强环氧复合材料
Preparation of Flame-Retardant Glass Fiber-Reinforced Epoxy by Vacuum-Assisted Resin Infusion Process with Deep Eutectic Point Curing Agent
Changzeng Wang, Jihui Wang, Pengyu Li, Chengxin Xu, Shuxin Li, Aiqing Ni · School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
摘要整理
提高纤维增强环氧树脂的阻燃性能可拓展其应用领域。然而，在含阻燃剂的环氧树脂中加入固化剂会缩短工艺时间，给阻燃复合材料的制造带来挑战。本研究采用深共晶溶剂（DES）作为固化剂，改善了阻燃环氧树脂的工艺性能。凝胶时间和粘度曲线表明，含DES的阻燃环氧树脂在60 °C下具有优异的可加工性，粘度为430 mPa·s。随后进行了阻燃环氧树脂（E-M）和复合材料（E-MC）的制造与性能研究。E-M的阻燃等级按UL-94标准达到V0级，极限氧指数（LOI）值为36.8%。阻燃剂的加入还略微改善了环氧树脂的力学性能。E-MC通过真空辅助树脂注入（VARI）工艺成功制备，UL94测试等级为V2，并获得了优异的力学性能。基体和复合材料的显著阻燃性能和力学性能表明，DES固化剂能够均匀分散并固化环氧树脂。本研究为通过VARI工艺制造阻燃复合材料提供了一种经济高效的解决方案，使多种阻燃剂能够应用于复合材料领域。
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