Halogen-free low-viscosity flame-retardant toughened epoxy resin material and preparation method thereof

The invention discloses a halogen-free low-viscosity flame-retardant toughened epoxy resin material and a preparation method thereof, the resin material is formed by mixing a compound resin, a phosphate flame retardant and an amine curing agent, and the compound resin is composed of one or more epoxy resins and a thermoplastic resin. The adopted thermoplastic resin is high in mechanical property and good in compatibility with epoxy resin and dispersity, so that the defect that the epoxy resin is insufficient in toughness is overcome, and the thermoplastic resin has the advantages of being environmentally friendly, excellent in physical property, good in processing property, stable in storage, low in VOC content and the like and can serve as a main force bearing part to be used in the field of aerospace. 本发明公开了一种无卤低粘阻燃增韧环氧树脂材料及其制备方法，该树脂材料由复配树脂、磷酸酯类阻燃剂及胺类固化剂混合组成，复配树脂由一种及一种以上环氧树脂和热塑性树脂组成。本发明采用的热塑性树脂力学性能较高,与环氧树脂混溶性及分散性较好,从而克服环氧树脂自身韧性不足的缺点，本发明制备有绿色环保、物理性能优异、工艺性能良好、储存稳定、低VOC含量等特点，可作为主承力件用于航空航天领域。