Preparation and Characterization of Polyaspartic and a High Solids Acrylic Copolymer Polyol Based Polyurethanes

Authors : Cemil DIZMAN, Elif CERRAHOĞLU KAÇAKGİL, Levent BABAYİĞİT, Caner ARAR

Pages : 605-620

Doi:10.18596/jotcsa.1216320

View : 141 | Download : 142

Publication Date : 2023-08-30

Article Type : Research Paper

Abstract :In this work, a high solids acrylic copolymer polyol insert ignore into journalissuearticles values(polyinsert ignore into journalissuearticles values(MMA/BA/HEMA/AA);); was synthesized from the polymerization of methyl methacrylate insert ignore into journalissuearticles values(MMA);, butyl acrylate insert ignore into journalissuearticles values(BA);, hydroxyethyl methacrylate insert ignore into journalissuearticles values(HEMA); and acrylic acid insert ignore into journalissuearticles values(AA); and was added to the polyaspartic resin. The polyaspartic-polyol mixtures reacted with polyisocyanates to create hybrid polyurethane-polyaspartic hybrid coatings. Different amounts of synthesized acrylic copolymer insert ignore into journalissuearticles values(5, 10, and 20% of total resin mixture); were mixed into polyaspartic resin and subsequently reacted with polyisocyanates in a 1:1 molar ratio. The characterization of the polymer was performed with Gel Permeation Chromatography insert ignore into journalissuearticles values(GPC);, Fourier-Transform Infrared-Attenuated Total Reflection insert ignore into journalissuearticles values(FTIR-ATR); and Differential Scanning Calorimetry insert ignore into journalissuearticles values(DSC);. The determination of physical and mechanical properties of the hybrid coatings was accomplished by hardness, glossiness, abrasion, stress-strain, corrosion, and impact tests. The results indicated that by adding high solids acrylic copolymer insert ignore into journalissuearticles values(HSAC);, the drawbacks of polyaspartic resin insert ignore into journalissuearticles values(short pot life, hardness and brittleness, and poor adhesiveness); have been largely eliminated without reducing its intrinsic properties. The pot life increased from 16 minutes to 27 minutes and shore D hardness decreased from 60-65 to 52-55 as the polyol content increased in the mixtures. The acrylic polyols and aspartic mixtures may be used in the preparation of paints and varnishes applied on concrete, metal, and wood surfaces.
Keywords : Acrylic copolymer, coating, high solids acrylic polyols, paint, polyaspartic