新型碳纤维点阵复合材料技术研究  

Interlacing Technique for New Carbon Fiber Lattice Materials

作　　者：范华林[1] 杨卫[1] 方岱宁[1] 庄茁[1] 陈祥宝[2] 邢丽英[2] 李斌太[2] 蒋诗才[2] 

机构地区：[1]清华大学工程力学系,北京100084 [2]航空材料研究院,北京100095

出　　处：《航空材料学报》2007年第1期46-50,共5页Journal of Aeronautical Materials

基　　金：国家高技术研究发展计划(863计划)项目(2003AA754033)

摘　　要：为了制备新型轻质高强材料,研究了满足拉伸主导型设计和临界细长比限制的点阵材料构形特征。针对碳纤维复合材料特点,开发了三维穿插编织工艺,在此基础上设计制备了碳纤维点阵复合夹层梁结构。对比蜂窝和碳泡沫材料分析点阵夹层结构的基本力学性能。研究表明点阵夹层结构具备整体成型、不发生层间脱胶破坏、比刚度和比强度高等优点,是一种很有前景的新型航空航天材料。To get lattice materials with higher loading capacity than honeycombs and foams but much lighter, unit lattice cell structures were studied. Rules for stretching dominated structures must be satisfied and the aspect ratio of the lattice struts should be smaller than the critical value. A lattice structure reinforced by carbon fibers was designed. The three dimensional interlacing method was developed to manufacture sandwich structures with lattice cores. The mechanical behaviors of lattice sandwich structures were analyzed comparing with honeycombs and foams. It＇s shown that lattice sandwich structures have advantages of higher specific strength and stiffness, integrally manufactured, and no debonding between the face sheets and the cores, which make them attractive for the use in aeronautic and astronautic structures.

关 键 词：碳纤维 点阵材料 穿插编织 轻质高强 

分 类 号：TB332[一般工业技术—材料科学与工程]