复合材料泡沫夹层结构板-芯缺陷注射修补工艺研究  

Study on injecting repair technology of skin-core flaw of composite foam sandwich structure

作　　者：包啸 何凯 周建 彭珂 李平 崔益华[2] Bao Xiao;He Kai;Zhou Jian;Peng Ke;Li Ping;Cui Yihua(AVIC Chengdu Aircraft Industrial(Group)Co.,L td.,Chengdu 610000;Nanjing University of Aeronautics and Astronautics,Nanjing 211100)

机构地区：[1]航空工业成都飞机工业(集团)有限责任公司,成都610000 [2]南京航空航天大学,南京211100

出　　处：《化工新型材料》2020年第9期243-246,共4页New Chemical Materials

摘　　要：制备了复合材料泡沫夹层结构板-芯缺陷试样,并对板-芯缺陷试样进行了注射修补。通过对修补区域进行钻孔,并使用医用注射器将DG-8胶黏剂注射入修补区域,利用热补仪将注射修补后的区域进行加热固化,并对注射修补完成后的复合材料夹层结构试样进行无损检测、力学性能测试以及微观结构分析。结果表明:注射修补后的试样拉伸强度恢复率达到97%以上,弯曲强度恢复率达到75%以上,试样修补区域的胶黏剂与修补件间胶接质量良好。The skin-core flaw samples of composite foam sandwich were prepared,and the flaw samples were repaired by means of injecting repair.The repaired area was drilled and DG-8 adhesive was injected into the repaired area using a medical syringe.Mechanical property,nondestructive testing and microstructure analysis of the repaired samples were carried out.The results showed that,the tensile strength recovery rate of repaired samples was more than 97%,bending strength recovery rate was more than 75%.This was a good combination between DG-8 adhesive,prepreg patch and foam core material.

关 键 词：复合材料 泡沫夹层结构 注射修补 强度恢复率 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]