论文部分内容阅读
探索采用酚醛纤维代替传统的玻璃纤维、高硅氧纤维及碳纤维,用于防热材料增强体,并对复合材料的力学性能、热物理性能、燃气流动态烧蚀性能、石英灯静态隔热性能几方面进行了相应的测试。研究表明:该复合材料与传统烧蚀防热材料相比密度更低、隔热性能更好;燃气流烧蚀试验后的材料表面碳层较为致密且结构完整;在热流密度17.3 kW/m2,总加热时间300 s,以及热流密度150 kW/m2,总加热时间150 s 2个石英灯静态加热条件下,相比同样厚度的高硅氧/酚醛复合材料在减重、隔热方面具有一定的优势。
Explore the use of phenolic fiber instead of the traditional glass fiber, high silica fiber and carbon fiber, for the heat-resistant material reinforcement, and mechanical properties of the composite material, thermal physical properties, gas flow dynamic ablation performance, quartz lamp static insulation performance Several aspects of the corresponding test. The results show that the composites have lower densities and better thermal insulation properties than the traditional ablative and heat-resistant materials. The carbon layer on the surface of the material after the gas-flow ablation test is relatively dense and structurally intact. At the heat flux density of 17.3 kW / m2, Total heating time 300 s and heat flux density 150 kW / m2, total heating time 150 s 2 quartz lamps under static heating conditions, compared with the same thickness of high silicon oxygen / phenolic composite material in terms of weight loss, heat insulation has a certain Advantage.