石墨烯导电涂膜的制备研究

Study of the Preparation of Graphene Conductive Coating System

以120～150 μm石墨为原料,通过不同插层剂插层膨胀并超声破碎制备石墨烯,以其为辅料加入到丙烯酸树脂涂料中,并在玻璃上制备涂膜,用红外光谱仪、激光粒度仪和万用表对实验产品进行测定,结果表明,石墨烯添加量越多,涂膜电阻越小,二次插层的石墨烯涂膜电阻均小于一次插层的涂膜,插层剂不同,涂膜的电阻不同,其中SNK体系的涂膜电阻较小.所制石墨烯为8nm左右的厚层石墨烯,石墨烯粒度较小有助于降低涂膜电阻,实验获得石墨烯较优涂膜电阻为87.8Ω.

Graphene were prepared with 120-150 μm graphite through different intercalation, expansion and ultrasonic crushing. Then they were added to the polypropylene coatings on glass to prepare graphene conductive coat. Graphene conductive coat were analyzed by infrared spectroscopy, laser particle size analyzer and multimeter. The results showed that the more graphene were added, the lower the resistance of film was. The resistance of two-intercalation-process graphene film is less than that of one-intercalation-process graphene film. Resistance of the film is different with intercalation agent. The resistance of SNK system coat is the lowest. Particle size analysis showed that smaller particle size can help to reduce the resistance of graphene film. The graphene film resistance is 87.8 12 under the appropriate conditions.