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	碳纳米管膜层间改性碳纤维/环氧树脂复合材料; CARBON NANOTUBE FILM INTERLAYER TOUGHENED CARBON FIBER REINFORCED EPOXY RESIN HYBRID COMPOSITES
	刘刚 ; 胡晓兰 ; 张朋 ; 余荣禄 ; 包建文 ; 陈名海 ; 李清文 ; 益小苏
	2013-10-20
关键词	复合材料 碳纳米管膜 层间改性 RTM Composites Carbon nanotube film Interlaminar toughening Resin transfer molding
英文摘要	采用碳纳米管膜作为碳纤维/环氧树脂复合材料的层间改性材料,应用液态成型树脂传递模塑工艺制备了碳纳米管膜/碳纤维/环氧树脂混杂复合材料,利用Ⅰ型层间韧性与Ⅱ型层间韧性表达了其韧性相关性能,并分析了改性机理.碳纳米管膜在混杂复合材料层间仍然保持其原有连续网格结构形式,这种形式对张开型Ⅰ型层间断裂韧性没有明显的改性作用,但对于滑移型Ⅱ型层间断裂韧性具有显著的改性效果.碳纳米管膜/碳纤维/环氧树脂混杂复合材料的Ⅱ型层间断裂韧性从碳纤维/环氧树脂复合材料的1292 J/M2提高到了2869 J/M2,提高了120%.材料微观形貌分析表明,这种由碳纳米管相互交叠、缠结而形成的网络结构有效地阻碍了层间微裂纹的扩展.; Carbon nanotube film(CNTF) interlayer toughened carbon fiber(CF) reinforced epoxy resin(EP) hybrid composites were fabricated via resin transfer molding(RTM) processing in this paper.Multiwalled carbon nanotubes were prepared by chemical vapour deposition,and carbon nanobute films were prepared through vacuum filtration.Model I interlaminar fracture toughness G IC of laminates and model II interlaminar fracture toughness G IIC of laminates are used to characterize the fracture toughness of the RTM laminates.Furthermore,the toughening mechanism is discussed through microstructure of the fracture surface combining mechanical properties.The compact degree of the carbon nanotube films was influenced by the ratio of the multi-walled carbon nanotubes,which led to different impregnation of the carbon nanobute films to the epoxy resin.Experimental results indicated that the carbon nanotube films from carbon nanotubes of large aspect ratios exhibited better impregnation effect than those films from carbon nanotubes of small aspect ratios.The carbon nanotube films intercalated in the interlayer of the composites between the carbon fiber and the matrix resin as a whole laminated structure,and they still kept a continuous grid structure in the CNTF/CF/EP hybrid composites.As to the model I interlaminar fracture toughness GIC of laminates,the carbon nanotube films have no obvious improvement on the GIC value.However,the carbon nanotube films laid between the carbon fiber layers changed the failure mode of the CF/EP composites,leading to increased initial failure load and breaking load.As to model Ⅱ interlaminar fracture toughness GⅡC of laminates,experimental results exhibited that the reinforcing efficacy on the sliding mode shear failure was remarkably increased for the CNTF/CF/EP hybrid composites.Model Ⅱ interlaminar fracture toughness GⅡC of laminates has increased from 1292 J/m2 of the CF/EP to 2869 J/m2 of the CNTF/CF/EP hybrid composites.There is 120% amplification in GⅡC testing value.Microstructures of the CF/EP composites and the CNTF/CF/EP hybrid composites were characterized through scanning electron microscope(SEM) for understanding the prominent improvement on the toughening properties.SEM pictures showed that there was strong shear history of the carbon nanotube films via the sliding mode failure.The carbon nanotubes absorbed a great deal of energy through shear sliding and hindered crack growth,leading to increase of the GⅡC value outstandingly.; 国家自然科学基金(基金号51103121;51203144); 航空科学基金(基金号20115221003;20125268002); 高等学校博士学科点专项科研基金(基金号20090121120036); 厦门市科技计划项目(项目号2010S0720); 福建省重大科技平台建设基金(基金号2009J1009)资助项目
语种	zh_CN
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/98433]
专题	材料学院－已发表论文
推荐引用方式 GB/T 7714	刘刚,胡晓兰,张朋,等. 碳纳米管膜层间改性碳纤维/环氧树脂复合材料, CARBON NANOTUBE FILM INTERLAYER TOUGHENED CARBON FIBER REINFORCED EPOXY RESIN HYBRID COMPOSITES[J],2013.
APA	刘刚.,胡晓兰.,张朋.,余荣禄.,包建文.,...&益小苏.(2013).碳纳米管膜层间改性碳纤维/环氧树脂复合材料..
MLA	刘刚,et al."碳纳米管膜层间改性碳纤维/环氧树脂复合材料".(2013).

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