适用于蜂窝增强低密度材料的抗氧化涂层研究  

Study on Anti-oxidation Coating Suitable for Honeycomb-enhanced Lowdensity Materials

作　　者：邓火英[1] 方洲[1] 潘艳 左小彪[1] 代晓伟 DENG Huoying;FANG Zhou;PAN Yan;ZUO Xiaobiao;DAI Xiaowei(Aerospace Research Institute of Materials&Processing Technology,Beijing 100076)

机构地区：[1]航天材料及工艺研究所,北京100076

出　　处：《宇航材料工艺》2025年第1期76-80,共5页Aerospace Materials & Technology

摘　　要：研制开发出了一种适用于蜂窝增强低密度防热材料的抗氧化涂层,研究了抗氧化涂层的工艺性、表面结构、热稳定性,并采用马弗炉烧蚀实验、等离子烧蚀试验以及辐射加热试验对其烧蚀性能进行了考核。结果表明:抗氧化涂层的溶剂含量范围应为25%~75%,适用期大于165 min,涂层厚度≤300μm。酚醛树脂STN-1的涂层热稳定性优于甲基苯基硅橡胶218-1。涂层经历800℃/10 min后出现了比较明显的陶瓷化现象。在1 MW/30 s和1.5 MW/30 s这两个条件下均形成了坚硬、致密的碳层。在2 000℃/300 s的辐射加热环境下,有涂层的蜂窝增强低密度防热材料背面温度降低了10℃,且碳层强度更高。A kind of anti-oxidation coating suitable for honeycomb-enhanced low-density thermal protection material was studied.The processing property,microstructure of surface,heat resistance of the anti-oxidation coating were investigated,and the ablative property was assessed by muffle furnace ablation test,plasma ablation test and radiation heating test.The results indicates that the solvent content of anti-oxidation coating should be in range from 25%to 75%,its pot-life is greater than 165 min and its thickness is less than 300μm.The thermal stability of the phenolic resin STN-1 coating is better than that of the methylphenyl silicon rubber 218-1.After being exposed to 800℃/10 min,a relatively obvious ceramicization phenomenon occurs in the coating.Under the conditions of 1 MW/30 s and 1.5 MW/30 s,a hard and dense carbon layer is formed.Under the radiation heating environment of 2000℃for 300 s,the back surface temperature of the honeycomb-reinforced low-density heat resistance material with coating is reduced by 10℃,and the strength of the carbon layer is higher.

关 键 词：蜂窝增强 防热材料 抗氧化涂层 烧蚀 

分 类 号：TB332[一般工业技术—材料科学与工程]