摘要
复合材料以质轻高强、疲劳性能好等优异性能在航空航天领域获得广泛应用,高性能复合材料低成本化对其推广应用具有关键意义,一直是工程和学术的热点领域。本文结合当前具有广泛用于前途的真空辅助成型(VARI)工艺制造复合材料的不足进行研究,提出将热塑性薄膜材料(聚醚砜)通过一定方式置于织物层间,并使用热压定型工艺获得改性预制体,然后基于VARI工艺制造复合材料制件,通过低成本的简便定型操作显著提高了最终复合材料制件性能。论文针对在0.1MPa、0.3MPa和0.6MPa下所得改性复合材料的拉伸性能进行测试验证方法的可行性,结果表明,与未改性复合材料相比,改性复合材料的拉伸强度分别提高16.78%,41.21%和29.47%,拉伸模量分别提高2.48%,19.01%和13.22%,为低成本制造高性能复合材料提供了参考。
Composites have been used in the aerospace field for the high property,however,the high cost has compromised its broader use and manufacture the high property composites in a low cost has obtained much more concerns.The tackified process was adopted to overcome the poor mechanical property of the composite using VARI process with a thermoplastic thin film which was stacked into the fabrics layers at a certain temperature and pressure.Finally,the modified composites were obtained with the VARI with the modified preforms.The pressures of 0.1MPa,0.3MPa and 0.6MPa were used to study the effect of tackifier pressure on the tensile property on the modified composites,as compared with the unmodified composites.The results show the tensile strength of the modified composites for the three tackifier pressures have respectively improved by 16.78%,41.21%and 29.47%,and the tensile modulus have improved by 2.48%,19.01%and 13.22%,which provide the guidance to obtain the high performance composites with low cost process of VARI.
作者
王长春
WANG Changchun(COMAC Shanghai Aircraft Manufacturing Co.,Ltd.,Composites Center,Shanghai 200123;COMAC Beijing Aircraft Technology Research Institute,Beijing Key Laboratory of Civil Aircraft Structures and Composite Material,Beijing 102211)
出处
《纤维复合材料》
CAS
2020年第1期13-16,共4页
Fiber Composites
