Performance Study on Acrylic Pressure-Sensitive Adhesive Modified with Metakaolin

Abstract

This paper takes butyl acrylate(BA) and 2-ethylhexyl acrylate(2-EHA) as the soft monomers, vinyl acetate(VAC) as the hard monomer of pressure-sensitive adhesive and acrylamide(AM) and acrylic acid(AA) as the raw materials of modified monomer to synthesize pressure-sensitive adhesive to carry out Fourier Transform Infrared Spectroscopy(FTIR)characterization. In order to satisfy some special requirements and improve its adhesive property, this paper uses metakaolin and metakaolin modified with silane couling agent KH570 to carry out mechanical blending with pressure-sensitive adhesive respectively and prepare composite acrylic pressure-sensitive adhesive. This paper tests the viscosity of composite pressure-sensitive adhesive with metakaolin and modified metakaolin. It is found that with the increase of doping content, the viscosity will be increased accordingly and the viscosity of composite pressure-sensitive adhesive with modified metakaolin has a larger growth. The adhesive property indicates that composite pressure-sensitive adhesive with KH570 modified metakaolin has an obviously better adhesive property than that with unmodified metakaolin, and when 0.8wt% of modified metakaolin is added, inorganic/organic composite acrylic pressuresensitive adhesive has the best comprehensive adhesive property.