王静,严福金

• 1:天津工业大学纺织科学与工程学院
• 2:中科院上海硅酸盐研究所

摘要(Abstract)：

为了充分发挥陶瓷材料抗压性能好和碳纤维材料高比刚、高比强、耐冲击性能好等优点，实现两者稳定、高效的连接，采用多壁碳纳米管（MWCNTs）对环氧胶粘剂进行增强改性，探讨了MWCNTs添加量以及胶层厚度对CFRP-陶瓷接头剪切强度和断裂模式的影响。3D轮廓仪、旋转流变仪、综合热分析仪及胶接接头力学性能测试结果表明：MWCNTs提高了CFRP-陶瓷接头的剪切强度，当MWCNTs质量分数为1.00%、胶层厚度为0.5 mm时，接头剪切强度达到最大值20.01 MPa，提高了19.96%；同时，不同胶层厚度的CFRP-陶瓷接头经历不同的失效阶段，胶层厚度为0.5 mm，表现在搭接区端部胶层开裂，胶层厚度超过1.0 mm，表现在搭接区端部胶层开裂逐渐向胶层内部断裂过渡；在此最优含量下，改性后环氧胶粘剂固化反应速率最大、热分解温度最高、热稳定性最佳，热分解残余剩余率提高了9.57%，但是，纳米颗粒的增强效果与其团聚性能相关，随着纳米颗粒含量增加，改性效果反而降低。

关键词(KeyWords)： 环氧胶粘剂;多壁碳纳米管(MWCNTs);碳纤维增强复合材料;陶瓷增强复合材料;胶接

Abstract:

Keywords:

基金项目(Foundation): 科技部重点研发项目（2019YFC0311800）

作者(Author): 王静,严福金

参考文献(References)：

• [1] HALBIG M,JASKOWIAK M,KISER J,et al. Evaluation of ceramic matrix composite technology for aircraft turbine engine applications[C]//51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. Reston,Virginia:AIAA,2013:539.
• [2]史康桥，李敏，朱冬冬，等.陶瓷与金属钎焊连接的研究进展[J].热加工工艺，2021,50(13):7-12.SHI K Q,LI M,ZHU D D,et al. Research progress of brazing joining between ceramic and metal[J]. Hot Working Technology,2021,50(13):7-12(in Chinese).
• [3] PRAMANIK A,BASAK A K,DONG Y,et al. Joining of carbon fibre reinforced polymer(CFRP)composites and aluminium alloys:A review[J]. Composites Part A:Applied Science and Manufacturing,2017,101:1-29.
• [4] SHANG X,MARQUES E A S,MACHADO J J M,et al. Review on techniques to improve the strength of adhesive joints with composite adherends[J]. Composites Part B:Engineering,2019,177:107363.
• [5] CHEN C G,JUSTICE R S,SCHAEFER D W,et al. Highly dispersed nanosilica-epoxy resins with enhanced mechanical properties[J]. Polymer,2008,49(17):3805-3815.
• [6] RAZAVI S M J,AYATOLLAHI M R,NEMATI GIV A,et al.Single lap joints bonded with structural adhesives reinforced with a mixture of silica nanoparticles and multi walled carbon nanotubes[J]. International Journal of Adhesion and Adhesives,2018,80:76-86.
• [7]沈小军，孟令轩，付绍云.石墨烯-多壁碳纳米管协同增强环氧树脂复合材料的低温力学性能[J].复合材料学报，2015,32(1):21-26.SHEN X J,MENG L X,FU S Y. Cryogenic mechanical properties of epoxy composites synergistically reinforced by graphene-multi-walled carbon nanotubes[J]. Acta Materiae Compositae Sinica,2015,32(1):21-26(in Chinese).
• [8] LIEW K M,LEI Z X,ZHANG L W. Mechanical analysis of functionally graded carbon nanotube reinforced composites:A review[J]. Composite Structures,2015,120:90-97.
• [9] TANG L C,WAN Y J,YAN D,et al. The effect of graphene dispersion on the mechanical properties of graphene/epoxy composites[J]. Carbon,2013,60:16-27.
• [10] GHOLAMI R,KHORAMISHAD H,DA SILVA L F M. Glass fiber-reinforced polymer nanocomposite adhesive joints reinforced with aligned carbon nanofillers[J]. Composite Structures,2020,253:112814.
• [11] WANG F Z,DRZAL L T,QIN Y,et al. Enhancement of fracture toughness,mechanical and thermal properties of rubber/epoxy composites by incorporation of graphene nanoplatelets[J]. Composites Part A:Applied Science and Manufacturing,2016,87:10-22.
• [12] JOJIBABU P,JAGANNATHAM M,HARIDOSS P,et al. Effect of different carbon nano-fillers on rheological properties and lap shear strength of epoxy adhesive joints[J]. Composites Part A:Applied Science and Manufacturing,2016,82:53-64.
• [13] GHEIBI M R,SHOJAEEFARD M H,SAEIDI GOOGARCHIN H. Experimental and numerical analysis on the cohesive behavior of an automotive adhesive improved by MWCNT subjected to mode I and II loadings[J]. International Journal of Mechanical Sciences,2019,153/154:271-286.
• [14] JIA Z M,FENG X P,ZOU Y. Graphene reinforced epoxy adhesive for fracture resistance[J]. Composites Part B:Engineering,2018,155:457-462.
• [15] JIA Z M,FENG X P,ZOU Y. An investigation on modeⅡfracture toughness enhancement of epoxy adhesive using graphene nanoplatelets[J]. Composites Part B:Engineering,2018,155:452-456.
• [16] YU S Z,TONG M N,CRITCHLOW G. Wedge test of carbonnanotube-reinforced epoxy adhesive joints[J]. Journal of Applied Polymer Science,2009,111(6):2957-2962.
• [17]王玉奇，何晓聪，邢保英，等.胶厚对单搭粘接接头强度影响的试验与仿真研究[J].机械强度，2014,36(6):873-877.WANG Y Q,HE X C,XING B Y,et al. Research on the influences of bondline thickness on strength of adhesivel bonding of single lap joints based on experiment and simulation[J].Journal of Mechanical Strength,2014,36(6):873-877(in Chinese).
• [18] AKHAVAN-SAFAR A,AYATOLLAHI M R,DA SILVA L F M. Strength prediction of adhesively bonded single lap joints with different bondline thicknesses:A critical longitudinal strain approach[J]. International Journal of Solids and Structures,2017,109:189-198.
• [19] TAIB A A,BOUKHILI R,ACHIOU S,et al. Bonded joints with composite adherends-Part I:Effect of specimen configuration,adhesive thickness,spew fillet and adherend stiffness on fracture[J]. International Journal of Adhesion and Adhesives,2006,26(4):226-236.
• [20] ANYFANTIS K N,TSOUVALIS N G. Loading and fracture response of CFRP-to-steel adhesively bonded joints with thick adherents-Part I:Experiments[J]. Composite Structures,2013,96:850-857.
• [21]熊东箭.玻纤增强复合材料单搭接胶接接头强度研究[D].长沙：湖南大学，2018.XIONG D J. A study on adhesive strength of single lap structural adhesive join of glass fiber reinforced composites[D]. Changsha:Hunan University,2018(in Chinese).