Benzoxazine resin system, preparation method thereof and method for preparing composite material

The invention discloses a benzoxazine resin system, a necessary method thereof and a method for preparing a composite material, and belongs to the field of composite materials. The benzoxazine resin system comprises the following raw material components: a benzoxazine monomer, a thermosetting modifier, a diluent and inorganic filler particles, has the properties of low viscosity, high temperature resistance, ablation resistance and small contractibility, and is suitable for composite material molding as matrix resin. According to the preparation method of the benzoxazine resin system, by optimizing preparation conditions, the prepared benzoxazine resin system has excellent ablation resistance and good mechanical properties. The composite material prepared by the method for preparing the composite material has excellent compression strength, bending strength and interlaminar shear strength. 本发明公开一种苯并噁嗪树脂体系及其必备方法以及制备复合材料的方法，属于复合材料领域。该苯并噁嗪树脂体系的原料组分包括苯并噁嗪单体、热固性改性剂、稀释剂和无机填料粒子，具有低粘度、耐高温、抗烧蚀、收缩性小性能，作为基体树脂适于复合材料成型。该苯