丙烯酸树脂基导电油墨正/负升温系数协同效应的研究

In this paper,Glass transition temperature of polymers was designed by using Fox equation, and poly(methyl methacrylate-butyl acrylate) was synthesized by emulsion polymerization. The glass transition temperatures(Tg) of polymers were measured by means of a differential scanning calorimeter (DSC).The effects of the ratio of resin matrix to conductive materials on membrane stability were emphatically investigated. The results of experiments indicated that the performance of electrothermal membrane could be improved by adding appropriate conductive material, and the membrane stability is highly dependent on the ratio resin matrix to conductive material. Conductive net was studied by means of scanning electron microscopy(SEM). The results show that the PTC effect of amorphous acrylic polymer significantly, eliminate the NTC effect of conductive filler in the process temperature rise.