有机硅材料用于冲压发动机绝热层的研究

Organic Silicon Material for Ramjet Adiabatic Layer

介绍了以硅树脂作为冲压发动机绝热层的基体材料,以YJ短纤维或纤维织物作为增强材料的两种绝热层配方的烧蚀性能。考察了YJ短纤维的含量、硅树脂/纤维织物的质量配比对绝热层烧蚀率和工艺性能的影响。结果表明:YJ短纤维为4份时,硅树脂/YJ短纤维/氧化锆配方的烧蚀与工艺的综合性能最佳,而硅树脂与纤维织物的质量配比为1.1∶1时,硅树脂/纤维织物配方的氧乙炔烧蚀率最小,仅为15.2μm/s。20 s缩比发动机地面试验结果表明,两种配方绝热层均对冲压发动机实施了有效热防护。

This paper introduces using silicon resin as a ramjet engine insulation layer of matrix material,with YJ short fiber or fabric as reinforced two insulation formula ablative properties of materials.The influence of content of YJ short fibers and the mass ratio of silicone resin/fiber fabric,on the insulation ablation rate and the process performance was studied.The results show that YJ short fiber is 4 phr,the comprehensive performance of ablation and silicon resin/YJ short fiber/zirconia formula was the best,and the mass ratio of silicone resin and the fabric is 1.1∶1,silicone resin/fiber fabric formulations of oxyacetylene ablation rate is the smallest,with only 15.2 μm/s.20 seconds compression ratio engine ground test results show that the two formulations,insulation of ramjet engine implemented effective thermal protection.