聚酰亚胺泡沫夹层结构胶接工艺  

Bonding Process of Polyimide Foam Laminate Structure

作　　者：房怡 孔静 陈雪婷 马立 赵琪 FANG Yi;KONG Jing;CHEN Xueting;MA Li;ZHAO Qi(Beijing Spacecraft Factory,Beijing 100094;China Aerospace Components Engineering Center,China Academy of Space Technology,Beijing 100094)

机构地区：[1]北京卫星制造厂有限公司,北京100094 [2]中国空间技术研究院宇航物资保障事业部,北京100094

出　　处：《宇航材料工艺》2022年第4期83-87,共5页Aerospace Materials & Technology

摘　　要：新型卫星平台对具有较低热导率和较高尺寸稳定性的聚酰亚胺泡沫提出应用需求,为保证聚酰亚胺泡沫夹层结构胶接质量可靠性及工艺可实施性,需要对胶黏剂进行选型与性能评价。本文对硅橡胶(RTV-X,GD414)进行试验和讨论,通过胶黏剂力学性能、耐温性能、流变性能、90°剥离性能对比,确认RTV-X胶黏剂适用于聚酰亚胺泡沫夹层结构胶接工艺。通过分析验证确定胶接加压方式和胶接压力,并对试样进行高低温力学性能、温度冲击后力学性能考核,总结出以RTV-X为胶黏剂采取正压力≥1 kPa制备出的聚酰亚胺泡沫夹层结构胶接工艺可靠,制品胶接质量良好。所得结果可为深空探测等更多型号任务需求提供工艺参考。The new satellite platform put forward application requirements for polyimide foam with lower thermal conductivity and higher dimensional stability.In order to ensure the reliability of the bonding quality and process feasibility of the polyimide foam sandwich structure,it was necessary to evaluate the agent selection and performance evaluation.In this paper,the silicone rubber(RTV-X,GD414)was tested and discussed.Through the comparison of the mechanical properties,temperature resistance,rheological properties,and 90°peel properties of the adhesive,it was confirmed that the RTV-X adhesive is suitable for bonding process of polyimide foam sandwich structure.Through analysis and verification,the bonding pressure method and bonding pressure were determined,and the high and low temperature mechanical properties and mechanical properties of the specimen after temperature impact were evaluated.It is concluded that with the selection of RTV-X adhesive and positive pressure≥1kPa,the bonding process of polyimide foam sandwich structure is reliable,and the bonding performance of products is good.The obtained results can provide technological reference for more task requirements of spacecraft products such as deep space exploration.

关 键 词：聚酰亚胺泡沫 泡沫夹层结构 RTV-X胶黏剂 胶接工艺 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]