复合材料纵横加筋隔框RTM成型工艺  

Study on Composite Frame With Stringer-Stiffened Feature by Resin Transfer Molding

作　　者：罗维 郭强 赵文琛 彭珂[1] 黄海超 LUO Wei;GUO Qiang;ZHAO Wenchen;PENG Ke;HUANG Haichao(AVIC Chengdu Aircraft Industrial(Group)Co.,Ltd.,Chengdu 610091)

机构地区：[1]航空工业成都飞机工业(集团)有限公司,成都610091

出　　处：《宇航材料工艺》2021年第6期44-48,共5页Aerospace Materials & Technology

基　　金：四川省科技计划(2019YFG0381)。

摘　　要：航空次承力框结构因结构复杂、精度要求高,目前仍然大多使用铝合金材料通过数控机加方式进行制造。为探索该类框结构的复合材料整体化成型的可行性,本文针对含纵横加筋及局部翻边结构特征的机身次承力框结构,对一薄壁复合材料隔框的整体化RTM成型工艺方法进行了研究。隔框结构的铺层变形仿真结果表明,采用全(0°/90°)铺层组合能够最大程度地减少结构的翘曲变形,且得到实际验证;流动仿真结果表明,较点注胶及线注胶方案,采用面注胶方式能够显著减少充填时间及充填压力;将优化的方案结合铺层自动下料、填充材料拉挤成型等自动化工艺相结合,成功制备了无损检测内部质量合格、取样力学性能与传统热压罐成型工艺相近的复合材料整体隔框。Due to the complicated structure and high precision requirement,the subordinate frame structure of aviation is still mostly made of aluminum alloy by CNC machines.In order to explore the feasibility of integrated forming solution for composite frame structure,this paper studies the resin transfer molding(RTM)method of a thinwall composite frame with longitudinal and transverse stiffeners and partial flanging structure characteristics.Simulation results show that the full(0/90)8 layer combination can reduce the warping deformation of the structure to the greatest extent,which was also verified by the actual manufacturing results.The flow simulation results show that surface-injection method can significantly reduce the filling time and pressure compared with point-injection and line-injection plans.By combining the optimized scheme with automatic laying-up blanking,pultruded filling material and other automatic processes,the integral insulation frame of composite material with qualified internal quality and similar sampling mechanical properties to the traditional autoclave forming process was successfully fabricated.

关 键 词：复合材料 框结构 RTM 成型工艺 

分 类 号：TQ323.7[化学工程—合成树脂塑料工业]