目的 研究涂料颜 / 填料的分散工艺与涂料的成膜过程以及涂层防热性能、环境适应性的关联。方法 采用不同方法对涂料进行分散,并喷涂于钢基、钛合金基体及铝合金基体表面,对比分析涂层的物理性能、防热性能及环境适应性。 结果 分散良好的涂料细度约为 60 ~ 70 滋m。 实验室烧蚀试验和空中搭载试验结果验证了良好分散有助于降低内应力,增强涂层的环境适应性,延长涂层的服役寿命,提高涂层的热防护性能。 结论 经过充分分散得到的涂层,其外观、防热性能及寿命均达到最优。

Objective To discuss the study on relationships between the process of filler and paints decentralization and the film formation of paints, as well as the thermal protection and environment adaptability of the coating. Methods The applied paint was dispersed with different techniques, and then sprayed on steel, titanium and aluminum alloy substrates. The physical properties,thermal protective performance and environmental adaptability of the coating were compared and analyzed. Results The results showed that the degree of fineness of the effectively dispersed coating could reach 60 ~ 70 滋m. Ablation experiments and air-equipped laboratory test results verified that grinding and dispersion helped reduce stress, increase the coating ’ s environmental adaptability, prolong the service life of the coating and improve the thermal protective performance. Conclusion The coating with full dispersion had the best appearance, performance and service life.