超薄鳞片石墨在电热涂料中的应用  

Application of Ultrathin Scale Graphite in Electrothermal Coatings

作　　者：王凡非 冯启明[1] 王维清[1] 黄阳[1] 

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010

出　　处：《非金属矿》2014年第3期36-39,49,共5页Non-Metallic Mines

基　　金：国家"863"项目(2001AA322070);西南科技大学研究生创新基金(13ycjj22)

摘　　要：以超薄鳞片石墨作为电热涂料导电相,研究了涂料成分配比和超薄鳞片石墨细度对电热涂料的电热性能、耐洗刷性及粘附力等性能的影响.SEM图片和粒度分析显示膨胀石墨磨剥成超薄鳞片石墨效果良好;在苯丙乳液与水质量比为1∶3、P75超薄鳞片石墨用量14％、石英粉和赤铁矿粉各为5％时,涂料电阻率能达到0.19Ω·cm;当外接电压为200V时,涂料升温速率高达19.1℃/min,升温速率快,导电、电热性能优异;涂料粘结强度能够达到ISO标准0～2级,且能够承受500次以上手工洗刷,耐洗刷性强;超薄鳞片石墨使用量只有普通石墨的1/2,具明显成本优势.Using ultrathin scale graphite as conductive phase were studied the influence of the composition ratio of coatings and the ultrathin scale graphite granularity on the electrothermal property, washability and adhesive force of electrothermal coatings. The SEM and particle size analysis showed the stratification of ultrathin scale graphite was well. When styrene acrylate emulsion with water in a mass ratio of 1 ： 3, the dosage of P75 ultrathin scale graphite was 14%, the dosage of quartz and hematite were 5% respectively. The resistivity of electrothermal coatings was 0.19 Ω· cm and the heating rate was 19.1 ℃/min at 200 V. The adhesive strength of electrothermal coatings can reach ISO Standard 0-2 class and able to withstand more than 500 times manually scrubbing. The cost advantage is obvious that the usage of ultrathin scale graphite only 1/2 of natural scale graphite.

关 键 词：电热涂料 超薄鳞片石墨 炭系涂料 电热性能 升温速率 

分 类 号：TM242[一般工业技术—材料科学与工程]