碳纳米管导电防腐涂料微观形貌及性能研究

发布时间：2018-05-23 14:28

本文选题：接地网 + 碳纳米管　；参考：《高电压技术》2016年05期

【摘要】：为制备1种接地网用碳纳米管改性导电防腐涂料,采用球磨工艺将填料分别分散在有机硅树脂和环氧树脂内制得了导电防腐涂料。将涂料喷涂固化,研究了涂层形貌和碳纳米管质量分数对涂层电导率、附着力以及耐蚀性能的影响。结果表明:碳纳米管在有机硅中分散均匀,在环氧内则存在团聚;2种涂层的渗流阈值均1%,当碳纳米管质量分数为8%时,有机硅和环氧涂层电导率分别为1.3 S/cm和1.7×10~(-2) S/cm;少量的碳纳米管有助于提高涂层的内聚力,当碳纳米管质量分数6%时,有机硅涂层的附着力与耐蚀性能都呈下降趋势,这种现象在环氧涂层中更为明显。与环氧树脂相比,有机硅树脂更适合作为碳纳米管改性导电防腐涂料的成膜剂,当碳纳米管质量分数为5%时,有机硅树脂涂层具有较好的综合性能。
[Abstract]:In order to prepare a kind of conductive anticorrosive coating modified by carbon nanotubes (CNTs) for grounding nets, the filler was dispersed in organic silicone resin and epoxy resin by ball milling process to prepare conductive anticorrosive coatings. The effects of coating morphology and carbon nanotube mass fraction on the conductivity, adhesion and corrosion resistance of the coating were studied. The results show that the carbon nanotubes are dispersed uniformly in organosilicon, and the percolation thresholds of the two coatings are 1. When the mass fraction of the carbon nanotubes is 8, the percolation threshold of the two coatings is 1, and when the mass fraction of the carbon nanotubes is 8, The conductivity of silicone and epoxy coatings were 1. 3 S/cm and 1. 7 脳 10 ~ (-2) S / cm, respectively. A small amount of carbon nanotubes helped to improve the cohesion of the coatings. When the mass fraction of carbon nanotubes was 6, the adhesion and corrosion resistance of organic silicon coatings decreased. This phenomenon is more obvious in epoxy coating. Compared with epoxy resin, organic silicone resin is more suitable as film forming agent for carbon nanotube modified conductive anticorrosive coating. When the mass fraction of carbon nanotube is 5, the organic silicone resin coating has better comprehensive properties.
【作者单位】：国网电力科学研究院武汉南瑞有限责任公司;
【基金】：国家电网公司科技项目~~
【分类号】：TM862

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