관능성 단량체 종류에 따른 4원 용액형 아크릴계 점착제의 합성과 물성에 관한 연구

The Effects of Functional Monomers on the Synthesis and Physical Properties of Solution Type Quaternary Polymer Acrylic Pressure-Sensitive Adhesives

To prepare a solution type acrylic pressure-sensitive adhesive, quarter polymers were synthesized from butyl acrylate(BA), 2-ethylhexylacrylate(2-EHA) as a base monomer, methyl methacrylate(MMA) as a comonomer, each of methacrylic acid(MAA), acrylic acid(AA) as a functional monomer. Acrylic solution type pressure-sensitive adhesives(PSA s) of isocyanate derivative crosslinking PSA s were prepared by crosslinking of BEMM, BEMA with toluene-2,4-diisocyanate. The structure of adhesive was identified by FT-IR. The viscosity was measured by using Brookfield DV-III and molecular weight was measured by using gel permeation chromatography. The physical properties of polyethylene film coated with BEMMT, BEMAT were measured as a function of the concentration. As the result, BEMMT(0.6, 0.8), BEMAT(0.6) showed peel adhesion of 160～180 gf/ 25 mm width and shear adhesion of more than 24 hours, and tackiness of 4/32～6/32 which was relevant to commercial usage.