Abstract: ［Objective］ In order to further enhance the anti-blast performance of aerospace vehicles，［Methods］four types of anti-blast coatings were selected as research objects. The finiteelement simulation software was used to simulate the anti-detonation performance to determine the bestanti-detonation performance of the rigid polyurea system. On this basis，a new type of anti-blast coatings were developed by adjusting the n（—NH₂）∶n（—NCO）ratio and adding functional fillers. The anti-blast performance of the anti-blast coating was verified through TNT flat explosion tests.［Results］The simulation and flat explosion test results showed that when the hard polyurea coatingthickness was 6 mm，the anti-blast performance was the best，with a protection effect of 31. 62%. On the basis of hard polyurea，when the n（—NH₂）∶n（—NCO）ratio was 1∶1. 05 and the carbon nanotube addition amount was 1%，the anti-blast coating could achieve the best anti-blast performance，onlyrequiring a coating thickness of 4 mm，with a protection effect of 28. 24%，approaching the protection effect of the 6 mm thick hard polyurea coating.［Conclusion］The developed product not only meet theanti-blast performance requirements of aerospace vehicles but also reducing the coating thickness， achieving the lightweight requirements of anti-blast coatings aerospace vehicles.

Key words: aerospace vehicle, anti-explosive coatings, polyurea, numerical simulation, target plate deflection

摘要： 【目的】进一步提升航空飞行器抗爆性能。【方法】以 4种抗爆涂料为研究对象，采用有限元模拟软件进行抗爆性能模拟计算，确定硬质聚脲体系抗爆性能最佳。并在此基础上，通过调整 n（—NH₂）∶n（—NCO），加入功能填料，制得新型抗爆涂料，并进行 TNT平爆试验来验证涂料的抗爆性能。【结果】硬质聚脲涂覆厚度为 6 mm时，抗爆性能最佳，防护效果为 31. 62%；在硬质聚脲的基础上，n （—NH₂）∶n（—NCO）为 1∶1. 05，碳纳米管添加量为 1%时，涂层达到最佳抗爆性能，仅需涂覆 4 mm厚度，防护效果n达到 28. 24%，接近硬质聚脲 6 mm厚的防护效果。【结论】研制的产品在满足航空飞行器抗爆性能的同时，降低了涂层厚度，实现了航空飞行器抗爆涂层的轻量化要求。

关键词: 航空飞行器, 抗爆涂料, 聚脲, 数值模拟, 靶板挠度

CLC Number: 

• TQ635. 6&emsp