Resistivity optimization and properties of silver nanoparticles-filled alcohol-soluble conductive coating based on acrylic resin

Abstract

An alcohol-soluble acrylic resin used to improve the dispersity of modified silver nanoparticles (AgNPs) was successfully synthesized. The structure of acrylic resin was designated according to the elements and groups on the surface of modified AgNPs. The content of g-(2,3-epoxypropoxy)propytrimethoxysilane (KH-560) and conductive filler, temperature, mechanical properties, anticorrosion, and so on were investigated in order to optimize the electrical conductivity and dispersion of modified AgNPs in coating. Surface chemical structure of modified AgNPs was characterized by X-ray photoelectron spectroscopy. Morphology of conductive coating was characterized by scanning electron microscopy. Groups in modified AgNPs and acrylic resin were characterized by Fourier transform infrared spectroscopy. And surface resistivity of conductive coating was characterized by digital multimeter techniques. The optimum surface resistivity of the acquired AgNPs conductive coating could be up to 0.01 ohm/sq, reaching the level of electromagnetic interference shielding. Moreover, the conductive coating possesses good property of anti-chemical and weather corrosion resistance.

Electromagnetic interference shielding effectiveness of polypyrrole-silver nanocomposite films on silane-modified flexible sheet

“…15 Recently, silver nanoparticles are being recommended for the preparation of conductive composite materials, due to their high electrical conductivity and low manufacturing cost. [16][17][18][19][20][21][22] Indeed, silver nanoparticles uniformly distributed in the conducting polymers matrix have attracted considerable attention because of their potential applications in various fields such as photonics, 23 gas sensing applications, 24,25 and EMI shielding. 26 Furthermore, deposition of conducting polymers films can be accomplished by chemical polymerization 27 and photopolymerization methods.…”