摘要
为了提高蜂窝夹层结构的耐热性和高温力学性能,采用石英灯和力学性能测试的方法进行了相关性能测试。弯曲性能测试结果表明,UT500/KH370蜂窝夹层面板的弯曲强度400℃保持率为58%,弯曲模量保持率为85%,层间剪切强度保持率为57%;石英灯静态隔热试验结果表明,冷壁热流为300 kW/m2的条件下,高度为29 mm的蜂窝夹层板的背温为320℃;冷壁热流为168 kW/m2的条件下,背温为296℃。
In order to enhance the heat resistant and mechanical properties of honeycomb sandwich at high temperature,the test of mechanical properties and heat insulation properties with static quartz lamp are carried out.The result shows that the retaining rate of flexural strength,moduli and interlaminate of panel are 58%,85% and 57%,respectively.After the sample heated by static quartz lamp,with 300 kW/m2 and 168 kW/m2 heat flux for 180 s,the back temperature of honeycomb structural composites are 320℃ and 296℃,respectively.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2011年第4期63-66,71,共5页
Aerospace Materials & Technology
关键词
聚酰亚胺
蜂窝夹层结构
复合材料
防热
隔热
Polyimide
Honeycomb sandwich structure
Composite
Thermal protection
Heat insulation
