利用石墨烯微片(GNPs)表面羟基与硅烷偶联剂反应,并通过原子转移自由基聚合(ATRP)方法在GNPs表面接枝了聚甲基丙烯酸甲酯(PMMA).应用扫描电子显微镜、透射电子显微镜、红外光谱和X射线衍射方法分析了化学接枝前后GNPs的微观结构变化.将接枝PMMA的GNPs加入环氧树脂中,研究其对环氧树脂力学性能与尺寸稳定性的影响.研究结果表明,与原始GNPs相比,表面接枝PMMA的GNPs对环氧树脂力学性能的增强作用更明显.添加质量分数为0.5％的GNPs-PMMA可以使环氧树脂拉伸强度和模量分别提高17.4％和75％,弯曲强度和模量也分别增加了6％和12％,同时可以使环氧树脂在低于玻璃化转变温度的线性热膨胀系数(CTE)降低25％.
参考文献
| [1] | 杨卫朋,艾 静,王青松.环氧树脂的增韧改性研究进展[J].材料导报,2011,25(2):394-397.Yang Weipeng,Ai Jing,Wang Qingsong.Modification of epoxy toughening[J].Materials Review,2011,25 (2):394-397. |
| [2] | 卫保娟,郑伟玲,肖潭,等.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,2011,28(5):27-33.Wei Baojuan,Zheng Weiling,Xiao Tan,et al.Preparation and properties of hybrid functionalized multi-walled carbon nanotubes/epoxy resin composite[J].Acta Materiae Compositae Sinica,2011,28(5):27-33. |
| [3] | Sengupta R,Bhattacharya M,Bandyo padhyay,et al.A review on the mechanical and electrical properties of graphite and modified graphite reinforced polymer composites[J].Progress in Polymer Science,2011,36(5):638-670. |
| [4] | 樊玮,张超,刘天西.石墨烯/聚合物复合材料的研究进展[J].复合材料学报,2013,30(1):14-21.Fan Wei,Zhang Chao,Liu Tianxi.Recent progress in graphene/polymer composites[J].Acta Materiae Compositae Sinica,2013,30(1):14-21. |
| [5] | Teng C C,Ma C C M,Lu C H.Thermal conductivity and structure of non-covalent functionalized graphene/epoxy composites[J].Carbon,2011,49(15):5107-5116. |
| [6] | Miller S G,Bauer J L,Maryanski M J,et al.Characterization of epoxy functionalized graphite nanopar-ticles and the physical properties of epoxy matrix nanocom posites[J].Composites Science and Technology,2010,70 (7):1120-1125. |
| [7] | Singh V,Joung D,Zhai L,et al.Graphene based materials:past,present and future[J].Progress in Materials Science,2011,56(8):1178-1271. |
| [8] | Fang M,Wang K,Lu H,et al.Covalent polymer functionalization of graphene nanosheets and mechanical properties of composites[J].Journal of Materials Chemistry,2009,19(38):7098-7105. |
| [9] | Lee S H,Dreyer D R,An J,et al.Polymer brushes via controlled,surface-initiated atom transfer radical polymerization (ATRP) from graphene oxide[J].Macromolecular Rapid Communications,2010,31(3):281-288. |
| [10] | Hsiao M C,Liao S H,Yen M Y.Preparation of covalently functionalized graphene using residual oxygen-containing functional groups[J].ACS Applied Materials & Interfaces,2010,2(11):3092-3099. |
| [11] | Li J,Sham M L,Kim J K,et al.Morphology and properties of UV/ozone treated graphite nanoplatelet/epoxy nanocomposites[J].Composites Science and Technology,2007,67(2):296-305. |
| [12] | 全国塑料标准化技术委员会.GB/T 164211996塑料拉伸性能小试样试验方法[S].北京:中国标准出版社,1996.National Technical Committee on Plastic of Standardization Administration of China.GB/T 16421-1996 Plastics-determination of tensile properties by use of small specimens[S].Beijing:Chinese Standards Press,1996. |
| [13] | 全国纤维增强塑料标准化技术委员会.GB/T 2567-2008树脂浇铸体性能试验方法[S].北京:中国标准出版社,2008.The Fiber Reinforced Plastic Standardization Technical Committee.GB/T 2567-2008 Test metnods for properties of resin casting body[S].Beijing:Chinese Standards Press,2008. |
| [14] | Geng Y,Wang S J,Kim J K.Preparation of graphite nanoplatelets and graphene sheets[J].Journal of Colloid and Interface Science,2009,336(2):592-598. |
| [15] | 冯颖,黄世华,康 凯,等.石墨烯微片的制备与表征[J].新型炭材料,2011,26(1):26-30.Feng Ying,Huang Shihua,Kang Kai,et al.Preparation and characterization of graphene and few-layer graphene[J].New Carbon Materials,2011,26(1):26-30. |
| [16] | Fasolino A,Los J H,Katsnelson M I.Intrinsic ripples in graphene[J].Nature Materials,2007,6(1):858-861. |
| [17] | Wang S,Tambraparni M,Qiu J,et al.Thermal expansion of graphene composites[J].Macromolecules,2009,42(14):5251-5255. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%