PMI泡沫夹层结构性能研究  

Properties of PMI Foam Sandwich Structure

作　　者：赵锐霞[1] 尹亮[1] 潘玲英[1] 梅立[1] 孙宏杰[1] 

机构地区：[1]航天材料及工艺研究所,北京100076

出　　处：《宇航材料工艺》2012年第5期34-37,共4页Aerospace Materials & Technology

摘　　要：对聚甲基丙烯酰亚胺(PMI)泡沫碳环氧复合材料夹层结构进行了平拉、平压、侧压、弯曲、剪切等性能试验,并对试样破坏模式进行了分析。结果表明:泡沫夹层结构平拉、平压、剪切性能取决于芯材的性能,表现为芯材的破坏,弯剪试样更能表征泡沫的剪切性能,泡沫夹层结构具有优越的侧压和弯曲性能,碳面板(1.05 mm)/泡沫(30 mm)夹层结构侧压强度为26.5 MPa、模量为5.88 GPa,弯曲刚度为3.05 kN.m2、模量为97.5 GPa。The flatwise tension, flatwise compression, edgewise compression, flexure and shear properties of polymethacrylimide （PMI） foam/carbon-fiber epoxy resin composites sandwich structures have been tested. And the failure modes of mechanical testing specimens have also been analysed. Results showed that the flatwise tension, flatwise compression and shear properties mainly depended on the properties of PMI foam core. The flexure testing specimens could better reflect the shear properties of foam. In addition, the foam sandwich structures had excellent edgewise compression and flexure properties. The edgewise compression strength and modulus of carbon-fiber epoxy panel （ 1.05 mm）/foam （30 mm） sandwich structure are respectively 26.5 MPa and 5.88 GPa. The flexure stiffness and modulus of foam sandwich structure are respectively 3.05 kN. mE and 97.5 GPa.

关 键 词：PMI泡沫 夹层结构 性能 

分 类 号：V443.4[航空宇航科学与技术—飞行器设计]