可重复使用飞行器用低密度烧蚀防热涂层研究  

Research on Low-density Ablative and Thermal Protection Coating for Reusable Aircraft

作　　者：闫雪 高超 杜宝宪[1] 贺晨[1] 刘健柠 曾一兵[1] YAN Xue;GAO Chao;DU Baoxian;HE Chen;LIU Jianning;ZENG Yibing(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》2024年第2期94-101,共8页Aerospace Materials & Technology

摘　　要：通过简便、高效的方法合成了硅氮化合物,以此为固化剂,分别完成了轻量化组元和烧蚀维形组元研究,最终获得了热稳定性优异、高温下尺寸稳定性高、抗烧蚀性能好的可重复使用飞行器用低密度防热涂层。结果表明,该防热涂层经过有限次静态烧蚀,密度、质量保留率均趋于稳定,力学性能能够满足使用需求。涂层经过高达10次石英灯烧蚀考核,防隔热性能无下降;经过5次风洞烧蚀考核,防热涂层抗烧蚀、防隔热性能无下降,进一步证明该种防热涂层经过有限次重复使用,仍能够对飞行器起到良好的热防护作用。The silazane compounds was synthesized through convenient and efficient method.Using it as a curing agent,lightweight components and ablative dimensional components were studied separately.Finally,a lowdensity heat-resistant coating for reusable aircraft with excellent thermal stability,high dimensional stability at high temperatures and good ablation resistance was obtained.The results indicates that the density and mass retention rate of the heat-resistant coating tend to stabilize after a finite number of static ablations,and the mechanical properties meet the usage requirements.The coating has undergone up to 10 times of quartz lamp ablation assessments,and its thermal insulation performance has remained unchanged.In addition,after 5 times wind tunnel ablation assessments,ablation resistance and thermal insulation performance of heat-resistanct coating has remained unchanged,which shows that heat-resistant coating can still provide good thermal protection for aircraft after a finite number of repeated use.

关 键 词：硅氮化合物 防热涂层 可重复使用飞行器 

分 类 号：V45[一般工业技术—材料科学与工程]