国产5056铝蜂窝芯的制备与性能评价

Preparation and Performance Evaluation of Domestic 5056 Aluminum Honeycomb Core

针对太阳翼基板用高性能低密度5056铝蜂窝芯的需求,开展了国产5056超薄铝箔制备及配套阳极氧化表面处理、国产5056铝蜂窝的制备和性能评价。研制的国产5056铝蜂窝芯公称密度17.28 kg/m^(3),节点强度为1.87 kN/m,蜂窝芯裸压缩、平面压缩、L向剪切、W向剪切强度分别达到了0.29、0.31、0.38、0.27MPa,力学性能均达到了进口蜂窝芯的水平。蜂窝芯胶膜热破工艺性能较好,网格夹层结构节点无脱开,弯曲刚度和强度测试值均达到了进口蜂窝测试值的水平,可以满足使用需求。试验结果可为后续高性能低密度铝蜂窝芯的型号应用及原材料国内自主保障提供数据基础及技术基础。

Aiming at the requirements of the high-performance low-density 5056 aluminum honeycomb core for solar wing substrate,the preparation of domestic 5056 ultra-thin aluminum foil and corresponding anodized surface treatment was carried out,the preparation and performance evalution of domestic 5056 aluminum honeycomb was carried out.The nominal density of domestic 5056 aluminum honeycomb core is 17.28 kg/m^(3),and the joint strength is 1.87 kN/m.The bare compression,plane compression,L-direction and W-direction shear strength of honeycomb core reach 0.29,0.31,0.38 and 0.27 MPa,respectively.The mechanical properties are equivalent to the test values of imported honeycomb core.The hot-breaking process performance of honeycomb core rubber film is good,the nodes of grid sandwich structure are not disconnected,and the bending stiffness and strength are equivalent to the test values of imported honeycomb,which can meet the use requirements.The test results can provide data and technical basis for the subsequent spacecraft application of high-performance low-density aluminum honeycomb core and the domestic independent guarantee of raw materials.