文芳,杨波,彭小坡,张双红,黄国家.石墨烯导电涂料的研究进展[J].表面技术,2021,50(3):141-148, 157. WEN Fang,YANG Bo,PENG Xiao-po,ZHANG Shuang-hong,HUANG Guo-jia.Advance on Graphene Conductive Coatings[J].Surface Technology,2021,50(3):141-148, 157 |
石墨烯导电涂料的研究进展 |
Advance on Graphene Conductive Coatings |
投稿时间:2020-03-12 修订日期:2020-06-03 |
DOI:10.16490/j.cnki.issn.1001-3660.2021.03.012 |
中文关键词: 石墨烯 导电涂料 填料 机理 电导率 |
英文关键词:graphene conductive coatings filler mechanism electrical conductivity |
基金项目:广州市市场监督管理项目(2019KJ16) |
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Author | Institution |
WEN Fang | Guangzhou Special Pressure Equipment Inspection and Research Institute, National Quality Supervision and Inspection Center of Graphene Product, Guangzhou 510663, China |
YANG Bo | Guangzhou Special Pressure Equipment Inspection and Research Institute, National Quality Supervision and Inspection Center of Graphene Product, Guangzhou 510663, China |
PENG Xiao-po | Guangzhou Customs District Technology Center, Guangzhou 510623, China |
ZHANG Shuang-hong | Guangzhou Special Pressure Equipment Inspection and Research Institute, National Quality Supervision and Inspection Center of Graphene Product, Guangzhou 510663, China |
HUANG Guo-jia | Guangzhou Special Pressure Equipment Inspection and Research Institute, National Quality Supervision and Inspection Center of Graphene Product, Guangzhou 510663, China |
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中文摘要: |
石墨烯具有超高的导电性、机械性及导热性,是目前研究最广泛的二维纳米材料,石墨烯作为特殊的功能填料,在导电防腐涂料领域得到广泛研究。首先,简要概述了石墨烯的结构特点,特殊晶体结构使其具有优异的物化性能,石墨烯作填料能够利用优异的导电性及片层结构,提升涂料的导电性及防腐蚀性。其次,针对石墨烯在导电涂料应用过程中的具体问题进行了详细说明,添加助剂以及氧化石墨烯功能化改性解决石墨烯的分散性,适量的添加量是影响导电涂料性能的关键因素,复合材料能够减少石墨烯添加量并产生协同作用,制备工艺主要包括溶液混合法、熔融共混法、原位聚合法。然后,阐述了石墨烯导电涂料的导电机理,竞争机理认为掺杂型导电涂料的导电性是由导电通路、隧道效应、场发射三者竞争的结果,结合导电模型分析了导电机理。最后,对石墨烯导电涂料的应用前景进行了展望,从石墨烯的分散方法、机理研究、制备工艺等方向,提出了石墨烯在导电涂料领域的研究建议。 |
英文摘要: |
Graphene has many physicochemical properties such as ultra-high conductivity, mechanical property and thermal conductivity, which makes it the most widely studied two-dimensional nanomaterials. As a special and functional filler, graphene has been widely studied in the field of conductive anticorrosive coatings. In this paper, the structure characteristics of graphene were briefly summarized. The special crystal structure made it excellent physical and chemical properties. As a filler, graphene could improve the conductivity and corrosion resistance of coatings by taking advantage of its excellent conductivity and lamellar structure. Next, specific problems in the application of graphene in conductive coatings were described in detail. The dispersion of graphene was solved by adding additives and functionalizing modification of graphene oxide; an appropriate amount of additive was the key factor of conductive coating performance; graphene composites could reduce the additive amount of graphene and produce synergistic effects; and the preparation process of graphene conductive coating mainly included:solution mixing, melt blending and in-situ polymerization. Then, the conductive mechanism of graphene conductive coatings was described and analyzed by combining with the conductive model. The competition mechanism suggested that the conductivity of doped conductive coatings was the result of competition among conductive pathways, tunnel effect and field emission. Finally, the application prospect of graphene conductive coatings was prospected, and the research suggestions of graphene in the field of conductive coatings were put forward from the aspects of graphene dispersion method, mechanism research, preparation process, etc. |
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