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

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