以 KNG-CZ030石墨烯（graphene nanoplatelets，GNPs）为导电填料，环氧树脂（E-54）为聚合物基体，2-乙基-4甲基咪唑（2，4-EMI）为固化剂，采用溶液混合和超声分散的方法制备导电复合材料。通过添加无机粒子（NaCl， TiO2），研究了无机粒子对石墨烯微片分散均匀性的影响以及对 GNPs ／E-54复合材料导电性能的影响。实验结果表明：加入 NaCl 和 TiO2提高了石墨烯微片在基体中的分散性，降低了复合材料室温体积电阻率，即提高了导电性能；NaCl ／GNPs ／E-54和 TiO2／GNPs ／E-54复合材料室温体积电阻率为106Ω·m 时，石墨烯质量分数分别为0．75％和0．73％，与未添加无机粒子的 GNPs ／E-54复合材料质量分数0．97％相比有所降低。
Conductive composite based on epoxy (bisphenol A,E-54)filled with graphene nanoplatelets (GNPs,KNG-CZ030 )and cured in the presence of 2-ethyl-4-methy imidazole(2,4-EMI)were prepared by solution blending assisted with ultrasonic dispersion. Nonconductive inorganic fillers(NaCl or TiO2 )were added as a second filler to study their effects on dispersal uniformity of GNPs and electrical properties of composite.It is found that by adding NaCl and TiO2 ,the dispersal uniformity of GNPs is improved and the con-ductivity of composite is increased with reduced room temperature resistivity .When the room temperature resistivity of NaCl /GNPs /E-54 and TiO2 /GNPs /E-54 composites is 106 Ω· m,their mass fractions are 0.75% and 0.72% respectively,which are lower than 0.97%,the mass fraction of GNPs /E-54 composite without adding inorganic particles.
参考文献
| [1] | Dan Li;Richard B. Kaner.Graphene-Based Materials[J].Science,20085880(5880):1170-1171. |
| [2] | An, J.-E.;Jeong, Y.G..Structure and electric heating performance of graphene/epoxy composite films[J].European Polymer Journal,20136(6):1322-1330. |
| [3] | C. N. R. Rao;Kanishka Biswas;K. S. Subrahmanyam.Graphene, the new nanocarbon[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,200917(17):2457-2469. |
| [4] | 谷敬凯;季铁正;张教强;李萍;刘欢;陈婷.PE-UHMW／GNPs导电复合材料的制备和表征[J].工程塑料应用,2014(8):26-30. |
| [5] | An, Zhenlian;Yin, Qianqian;Liu, Yaqiang;Zheng, Feihu;Lei, Qingquan;Zhang, Yewen.Modulation of Surface Electrical Properties of Epoxy Resin Insulator by Changing Fluorination Temperature and Time[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,20151(1):526-534. |
| [6] | Quiroga, M.A.O.;Cabeza, G.F..Role of Van der Waals Forces in Graphene Adsorption over Pd, Pt, and Ni[J].Brazilian journal of physics,20133(3):126-129. |
| [7] | Zhang W;Blackburn RS;Dehghani-Sanij AA.Effect of carbon black concentration on electrical conductivity of epoxy resin-carbon black-silica nanocomposites[J].Journal of Materials Science,200718(18):7861-7865. |
| [8] | 郑星卓;季铁正;张教强;杨建锋;李萍;谷敬凯.碳酸钙对炭黑/环氧树脂复合材料电性能的影响[J].航空材料学报,2013(5):61-65. |
| [9] | Wei Zhang;Richard S. Blackburn;Abbas A. Dehghani-Sanij.Effect of silica concentration on electrical conductivity of epoxy resin-carbon black-silica nanocomposites[J].Scripta materialia,20077(7):581-584. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%