固体火箭发动机壳体复合裙RTM成型技术

树脂传递模塑工艺(RTM)可实现复合材料承力构件高表面质量净尺寸成型。以A配方为树脂基体、3K缎纹碳布为增强材料,采用RTM工艺制备了固体火箭发动机壳体复合裙。分析了A配方的RTM工艺特性及树脂浇铸体性能,介绍了复合裙注射模具和注射设备,讨论了RTM工艺参数及复合裙材料性能。结果表明:RTM复合裙纤维体积分数达54. 5%,联合载荷(轴压+弯矩)条件下轴压达748 kN,弯矩达94 N·m;纯轴压载荷达1 062 kN,纯弯矩载荷达143. 1 N·m,壳体复合裙整体强度高,满足设计和使用要求。

RTM Forming Technology for Composite Skirts of Solid Rocket Motor Case

Resin transfer moulding(RTM)technology can be used to realize high surface quality and net size moulding of composite force-bearing components. Composite skirt of solid rocket motor case was prepared by RTM process using formula A that resin is as matrix and 3 K satin carbon cloth as reinforcement material. The RTM process characteristics of A formula and the properties of resin castable were analyzed,the injection mould and equipment for composite skirt were introduced,the RTM process parameters and the properties of composite skirt materials were discussed. The results show that the fiber volume fraction of composite skirt reached 54. 5%. Under combined load(axial compression +bending moment),the axial compression reaches 748 kN and the bending moment reaches 94 N·m,pure axial compression load reaches 1 062 kN,pure bending moment load reaches 143. 1 N·m. High strength of shell composite skirt meets the design and application repuirements.