VARI工艺成型纤维增强树脂复合材料层合板厚度和纤维体积分数的影响因素

分析了影响真空辅助成型技术（VARI）工艺成型复合材料的纤维体积分数和厚度均匀性的关键因素，即VARI成型工艺的树脂流动控制形式、纤维预制体状态、织物状态、树脂黏度，通过试验分析了各因素对VARI成型复合材料厚度和纤维体积分数的影响。试验结果表明，采用HFVI（high fiber-volume vacuum infusion）工艺、BA9914树脂及真空处理后的U3160单向机织物成型的纤维增强树脂复合材料层合板，其纤维体积分数和厚度均匀性能够接近预浸料/热压罐成型的复合材料制件的水平。

Key factors on the thickness and volume fraction of fiber reinforced resin composite laminates molded via VARI technology

The key factors on the fiber volume fraction and thickness uniformity of the composite molded via vacuum assisted resin infusion(VARI) technology were analyzed, i.e. resin flow control, state of preform, state of fabric and viscosity of resin. The effects of the key factors on the thickness and the fiber volume fraction of the composite molded via VARI technology were verified individually by process test. The results of the tests show that the fiber volume fraction and thickness uniformity of the fiber reinforced resin composite laminates are comparable with those of the composite article molded via prepreg/autoclave process, wherein the fiber reinforced resin composite laminates were molded by HFVI (high fiber-volume vacuum infusion) process and BA9914 resin and vacuum treated U3160 unidirectional woven fabrics are used.