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针对IM7/CYCOM5230-1罐外固化预浸料,研究了自动铺放(AFP)罐外固化(OOA)预浸料的制备过程并优化了铺放工艺参数,采用热分析手段研究了CYCOM5230-1树脂固化动力学以及黏度特性,在此基础上开发了一种短时固化工艺,并评价了基于此工艺制备的罐外固化复合材料力学性能。结果表明,AFP铺放过程中预浸料间缝隙会影响OOA复合材料的成型质量,采用铺放压力为180N,加热温度为50℃,铺放速率为0.20m/s的铺放参数,可获得表面平整、成型质量优异的复合材料样件。热分析结果表明,罐外固化CYCOM5230-1树脂室温黏度大,满足OOA工艺中真空压实排气需求。短时固化工艺可达到与典型固化工艺相同水平固化度,提升了固化效率,且制备的复合材料可以达到59%的纤维体积分数以及低于0.5%的孔隙率,其力学性能与典型固化工艺制备的复合材料相当,并且能够达到热压罐复合材料的水平。
In view of the IM7 / CYCOM5230-1 can curing the prepreg, the automatic preparation (AFP) can outer curing (OOA) prepreg preparation process and optimization of the laying process parameters, the use of thermal analysis CYCOM5230-1 Resin curing kinetics and viscosity characteristics, based on which a short-time curing process was developed, and the mechanical properties of the externally cured cans based on this process were evaluated. The results show that the gap between prepregs during the AFP laying process will affect the forming quality of OOA composites. The laying parameters such as laying pressure 180N, heating temperature 50 ℃ and deposition rate 0.20m / s can be obtained Surface formation, forming high quality composite samples. The results of thermal analysis show that the viscosity of CYCOM5230-1 resin cured at room temperature is large and meets the requirement of vacuum compaction and exhaust in OOA process. The short-time cure process achieves the same level of cure as the typical cure process, enhances the cure efficiency, and the prepared composite material achieves a fiber volume fraction of 59% and a porosity of less than 0.5%, with mechanical properties comparable to those of a typical cure process Of the composite material, and can reach the level of autoclave composite material.