碳纳米管导静电涂料导静电性能的影响因素  

Influencing Factors on Static Conductivity of Electrostatic Conductive Coating Made of Carbon Nanotube

作　　者：张涛[1] 刘海峰[1,2] 李军[1,2] 潘肇基[1,2] 张小红[1,2] 

机构地区：[1]武汉材料保护研究所,湖北武汉430030 [2]材料表面保护技术湖北省重点实验室,湖北武汉430030

出　　处：《材料保护》2015年第7期45-47,共3页Materials Protection

摘　　要：目前,导静电涂料的导电介质多以碳系和金属氧化物为主,不能兼顾涂料的防腐蚀与导电性能,对以碳纳米管(CNTs)作为导电介质和以环氧改性有机硅树脂作为导静电涂料基体树脂的研究均较少。利用环氧树脂改性有机硅低聚物合成了改性树脂,采用红外光谱对产物进行了表征,研究了碳纳米管含量、酸化处理、固化剂、分散剂含量对由CNTs制备的导静电涂料涂膜的导静电性能的影响。结果表明:CNTs含量对提高涂膜导静电性能有影响,CNTs含量为2.0%时导静电性能很好;CNTs酸化处理后涂膜的导静电性能得到明显提高;固化剂聚酰胺650含量为30.0%时,涂膜固化性能和导静电性能最优;分散剂能很好地提高CNTs分散性能,十二烷基苯磺酸钠/改性树脂(质量比)和十八醇/改性树脂(质量比)均在2.0%时达到其最佳效果。Modified resin was synthesized by using epoxy modifying silicone oligomer,which was characterized by infrared spectrum. The influences of the carbon nanotube,acid treatment,curing agent,and dispersion agent on the performance of electrostatic conductive coating prepared by CNTs were studied. Results showed that the static conductivity of the coating was affected by the CNTs content,and the coating achieved the best static conductivity when the CNTs content was2. 0%. The acid treatment of the CNTs also improved the static conductivity of the coatings significantly. With the 30. 0% poly-amide 650 as curing agent,the coating achieved the best curing performance and static conductive performance. The dispersibility of the coating could be clearly enhanced by the dispersant. The optimum performance was obtained when the mass ratio of sodium dodecyl benzene sulfonate to the modified resin and the mass ratio of octadecanol to the modified resin were both 2. 0%.

关 键 词：导静电涂料 碳纳米管 有机硅 表面电阻率 

分 类 号：TQ637[化学工程—精细化工]