利用氨基化多壁碳纳米管(MWCNTs-NH2)与环氧化合物苄基缩水甘油醚(EP 692)和十二-十四烷基缩水甘油醚(EP AGE)反应,通过球磨工艺制备了两种不同分子结构环氧化合物上浆处理的多壁碳纳米管(MWC-NTs)MWCNTs-692和 MWCNTs-AGE。将均为1wt%的 MWCNTs-NH2,MWCNTs-692和 MWCNTs-AGE 分别添加到二氨基二苯甲烷(DDM)固化双酚 A二缩水甘油醚(DGEBA)环氧树脂体系中,分析了三种 MWCNTs 对树脂体系黏温关系、固化动力学、热力学性能和弯曲性能的影响。FT-IR,TGA 和 XPS 测试表明,EP 692和 EP AGE通过共价键接枝到碳纳米管的表面。与 MWCNTs-NH2相比,MWCNTs-692和 MWCNTs-AGE 可以有效提高碳纳米管在环氧树脂基体中的分散性和相容性,减少纳米粒子对树脂体系黏度和固化动力学的影响。此外,添加上述三种碳纳米管都可以改善纯环氧树脂体系的储能模量和弯曲性能,其中经过含有刚性分子结构上浆剂处理的 MWCNTs-692增强效果最为显著。添加1 wt% MWCNTs-692后,MWCNTs-692/环氧树脂复合材料的常温储能模量提高了30.6%,弯曲强度和模量分别提高了18.8%和22.5%。
By the reaction of epoxy ring and the amino group on the surface of amine functionalized multiwalled carbon nanotube (MWCNTs-NH2 ),monofunctional epoxy compound benzyl ether (EP 692)and twelve-fourteen alkyl ether (EPAGE)were grafted onto the surface of MWCNTs using ball milling techndogy,known as sizing treatment.As a result,the MWCNTs-692 and MWCNTs-AGE with different molecular structure of sizing were prepared.On this basis,1wt% of MWCNTs-NH2 ,MWCNTs-692 and MWCNTs-AGE were added into diaminodi-phenylmethane (DDM)cured bisphenol a diglycidyl ether (DGEBA)system,respectively,and the effects of these MWCNTs on the viscosity-temperature relationships,cure kinetics,thermal-mechanical and flexural properties of the resulting epoxy composites were investigated.The results of FT-IR,TGA and XPS show that EP 692 and EP AGE can be successfully grafted onto the surface of MWCNTs via covalent bond.Comparing with MWCNTs-NH2 , MWCNTs-AGE and MWCNTs-692 can effectively improve the dispersion states and compatibility of MWCNTs in epoxy resin,reduce the influence of nanoparticles on the viscosity and curing kinetics of epoxy resin.Moreover, these MWCNTs can improve the storage modulus and flexural properties of epoxy resin,especially for the MWC-NTs-692 reinforced ones due to the existence of rigid functional groups.Comparing with the neat epoxy,the storage modulusof MWCNTs-692/epoxy composite increases by 30.6% after being added 1wt% MWCNTs-692,and the flexural strength and modulus of epoxy resin exhibit enhancement of 18.8% and 22.5%,respectively.
参考文献
| [1] | Domun, N.;Hadavinia, H.;Zhang, T.;Sainsbury, T.;Liaghat, G. H.;Vahid, S..Improving the fracture toughness and the strength of epoxy using nanomaterials - a review of the current status[J].Nanoscale,201523(23):10294-10329. |
| [2] | 卫保娟;郑伟玲;肖潭;吴萍.混杂功能化多壁碳纳米管/环氧树脂复合材料的制备及性能[J].复合材料学报,2011(5):27-33. |
| [3] | 赫玉欣;张丽;朱伸兵;姚大虎;张志强;张玉清.碳纳米管的表面改性对环氧树脂低温（77K）冲击性能及热膨胀系数的影响[J].复合材料学报,2012(4):56-62. |
| [4] | 郑国栋;张清杰;邓火英;蒋文革;杨小平;隋刚.不同官能化碳纳米管对MWCNTs-碳纤维/环氧树脂复合材料力学性能的影响[J].复合材料学报,2015(3):640-648. |
| [5] | 孟振强;刘如铁;熊拥军;赵福安;李溪滨.球磨方式对多壁碳纳米管形貌和结构的影响[J].中国有色金属学报,2012(12):3421-3426. |
| [6] | Sankaran Murugesan;Kirby Myers;Vaidyanathan (Ravi) Subramanian.Amino-functionalized and acid treated multi-walled carbon nanotubes as supports for electrochemical oxidation of formic acid[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20113/4(3/4):266-274. |
| [7] | Characterization of epoxy functionalized graphite nanoparticles and the physical properties of epoxy matrix nanocomposites[J].Composites science and technology,20107(7):1120. |
| [8] | E.R. Edwards;K.G. Kostov;E.C. Botelho.Evaluation of the chemical interaction between carbon nanotubes functionalized with TGDDM tetrafunctional resin and hardener DDS[J].Composites, Part B. Engineering,2013Aug.(Aug.):197-203. |
| [9] | Wei-Hong Zhong;Jiang Li;Luoyu R. Xu;Jason A. Michel;Lisa M. Sullivan;Charles M. Lukehart.Graphitic Carbon Nanofiber (GCNF)/Polymer Materials. I. GCNF/Epoxy Monoliths Using Hexanediamine Linker Molecules[J].Journal of nanoscience and nanotechnology,20047(7):794-802. |
| [10] | Zehua, Q.;Guojian, W..A comparative study on the properties of the different amino-functionalized multiwall carbon nanotubes reinforced epoxy resin composites[J].Journal of Applied Polymer Science,20121(1):403-411. |
| [11] | Shiren Wang;Zhiyong Liang;Tina Lin.Effective amino-functionalization of carbon nanotubes for reinforcing epoxy polymer composites[J].Nanotechnology,20066(6):1551-1557. |
| [12] | Fu, Y.;Zhong, W.-H..Cure kinetics behavior of a functionalized graphitic nanofiber modified epoxy resin[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,20111/2(1/2):58-63. |
| [13] | 马传国;于英俊.碳纳米管的偶联剂修饰及其在环氧树脂复合材料中的应用[J].复合材料学报,2010(3):22-28. |
| [14] | Chen, Xiaoming;Zhang, Liuyang;Zheng, Meng;Park, Cheol;Wang, Xianqiao;Ke, Changhong.Quantitative nanomechanical characterization of the van der Waals interfaces between carbon nanotubes and epoxy[J].Carbon: An International Journal Sponsored by the American Carbon Society,2015:214-228. |
| [15] | 许丹;隋刚;杨青;张清杰;曾娟娟;杨小平.石墨烯微片表面接枝PMMA及其环氧树脂复合材料性能[J].复合材料学报,2014(2):368-374. |
| [16] | Jianfeng Shen;Weishi Huang;Liping Wu.The reinforcement role of different amino-functionalized multi-walled carbon nanotubes in epoxy nanocomposites[J].Composites science and technology,200715/16(15/16):3041-3050. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%