根据流变性能、凝胶时间等参数确定了预浸料树脂的基础配方，并根据固化后树脂浇注体表面质量优化预浸料树脂的合成工艺，降低能耗的同时解决了双氰胺分散不均的问题。引入气相纳米SiO2组分作为增韧剂（最佳添加量为1%），增韧后树脂浇注体拉伸强度为74.41 MPa、冲击强度为20.23 kJ/m2，比原配方分别提高了72.64%和58.79%。最终确定预浸料树脂配方为E-51、E-20、NPCN704、双氰胺、二氯苯基二甲脲、气相纳米SiO2和消泡剂的质量比50:30:20:7:2:1:0.2，根据差示扫描量热分析（DSC）的非等温曲线外推法确定树脂配方的固化工艺为100 ℃/1 h+130 ℃/2 h+150 ℃/2 h。将自制预浸料树脂与商用预浸料树脂进行浇注体和复合材料的力学性能对比，结果表明，自制预浸料树脂各项性能较为优异。采用真空辅助成型工艺制备了玻纤和碳纤增强自制预浸料树脂复合材料，树脂含量分别控制在40%和35%为宜。
According to the rheological properties, gel time, etc., the basic formula of prepreg resin was obtained.The optimum synthesis process of prepreg resin was obtained, taking the surface quality of cured resin as evaluation standard. It can reduce the energy consumption and solve the problem of uneven dispersion of dicyandiamide. The experimental results show that the optimum amount of gas phase nano SiO2 is 1% as toughening agent, the tensile and impact strength of the cured resin are 74.41 MPa and 20.23 kJ/m2 respectively, which are increased by 72.64% and 58.79% compared with those before toughening. Finally, the prepreg resin formula is determined as the mass ratio of E-51, E-20, NPCN704, dicyandiamide, dichlorophenyl dimethyl urea, gas phase nano SiO2, defoaming agent of 50:30:20:7:2:1:0.2, and the curing process is determined as 100 ℃/1 h+130 ℃/2 h+150 ℃/2 h according to the extrapolation of DSC non-isothermal curve. The mechanical properties of the casting and composites were compared with commercial prepreg resin, and the results show that the self- made prepreg resin is excellent. Glass fiber and carbon fiber reinforced self-made prepreg resin composites were prepared by vacuum assisted molding process, and the resin content should be controlled at 40% and 35%, respectively.