碳纳米管膜层间增韧对碳纤维复合材料力学性能的影响  

Effect of Carbon Nanotube Film Interlayer Toughening on Mechanical Properties of Carbon Fiber Reinforced Composite

作　　者：邓火英[1] 王立敏[1] 冯奕钰[2] 陈名海[3] 蒋文革[1] 

机构地区：[1]航天材料及工艺研究所,北京100076 [2]天津大学材料科学与工程学院,天津300072 [3]中国科学院苏州纳米技术与纳米仿生研究所,苏州215123

出　　处：《宇航材料工艺》2015年第5期31-35,共5页Aerospace Materials & Technology

摘　　要：分别采用两种碳纳米管膜进行层间增韧,应用热压罐工艺成型了碳纳米管膜/碳纤维增强树脂基复合材料,研究了碳纳米管膜的成型工艺、取向、面密度对复合材料力学性能和层间韧性的影响。结果表明:CNT膜平行于碳纤维铺放时复合材料的压缩强度、90°弯曲强度和层剪强度均高于CNT膜垂直于碳纤维铺放时的复合材料性能。面密度较小的CNT膜对复合材料的增韧效果较好。喷涂法成型的碳纳米管膜层间改性的复合材料层间断裂韧性明显优于拉膜法碳纳米管膜层间改性的。CNT无规膜的面密度为0.75 g/m2时,复合材料的GIC和GIIC最优,相比改性前分别提高了21%和42%。Carbon nanotube film （CNTF）/carbon fiber reinforced resin composite were tabncated via autoclave process with two kinds of carbon nanotube film interlayer toughening respectively. Effect of the molding process, ori- entation and planar density of the carbon nanotube film on the mechanical properties and interlaminar toughness of composite were investigated. The result reveals that compared to the vertical direction, when the CNTF were layed paralleling to the carbon fiber, the compression strength ,90° flexural strength and interlaminar shear strength of com- posite were better. The toughening effect of the composite enhanced as the planar density of the carbon nanotube film decrease. The interlaminar fracture toughness of composite interlayer toughened by carbon nanotube film sprayed is more outstanding evidently than carbon nanotube film drawed. When the planar density of the carbon nanotube ran- dom film was 0.75 g/m^2, GIC and GIC of composite were optimum, increased by 21% and 42%, respectively,com- pared to composite before toughening.

关 键 词：碳纳米管膜 层间增韧 复合材料 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]