材料和结构对柔性热防护材料性能的影响研究

Research on the Influences of Material and Structure on the Performance of Flexible Thermal Protection Material

为了对比不同结构与组成的耐高温柔性热防护材料,设计了地面热试验方案,模拟实际使用中的热辐射环境,分别对以高硅氧方格布、高硅氧缝合垫、高硅氧与玄武岩复合缝合垫为主体材料的热防护材料进行隔热性能测试,得到在650℃和900℃热流下保持1800 s时间的试验数据。在本试验工况下,采用高硅氧与玄武岩复合缝合垫为主体材料的热防护材料具有较好的高温隔热性能。通过分析不同材料的隔热性能及其差异产生的原因,试验结果可为今后相关领域的防热设计提供参考。

In order to compare the high temperature resistant and flexible thermal protection materials with different structures and compositions, a ground thermal test program was designed to simulate the thermal radiation environment in actual use. Thermal protection materials with high silica roving cloth, high silica wool mattress and high silica wool/basalt wool composite mattress as main substance respectively were tested for thermal insulation performance, obtaining deta of these materials lasting for 1800 s under the heat flow of 650 ℃ and 900 ℃. Under this test condition, the thermal protection material with high silica wool/basalt wool composite mattress as the main substance has better high-temperature insulation performance. By analyzing the thermal insulation performance of different materials and the reasons for their differences, the test results can provide a reference for future thermal protection design in related fields.