摘要
根据软模热膨胀压力与复合材料推力筒壁厚和复合材料预成型体之间的变化关系,推导出了软模尺寸控制方程,并采用整体浇铸成型技术制备软模。对整体制备出的复合材料推力筒的轴压性能测试结果表明,复合材料推力筒整体力学性能优异,满足设计要求。与传统VARTM工艺相比较,软模辅助RTM能通过软模的膨胀挤胶作用,提高构件的纤维体积分数;通过加压作用,提高构件的致密性和表面质量,最终使其力学性能提高。
The size control equation of the thermal expansion mould was derived from the relative relation between the expansion pressure of the thermal expansion mould and the wall thickness of the composite thrust cylinder and the thickness of the preform used for fabricating the composite thrust cylinder. The thermal expansion mould was fabricated by an integrally casting method. The axial compressive experiment on the integrally fabricated thrust cylinder shows that the thrust cylinder has good mechanical properties and satisfies the design specification. Compared with traditional VARTM, the thermal expansion mould assisted RTM process improves the fiber volume fraction by squeezing the resin out through an inflated thermal expansion mould and improves the compactness of the composites by expansion pressure of the mould; therefore the mechanical properties of the composites were increased.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2007年第4期46-50,共5页
Acta Materiae Compositae Sinica
基金
国家"863"计划项目(2002AA724052)
关键词
软模工艺
VARTM工艺
复合材料推力筒
轴向压缩
thermal expansion moulding process
VARTM process
composite thrust cylinder
axial compression
