Preparation and characterisation of phenyl silicone-acrylic polyol coatings

Purpose - The paper's aim is to investigate improvement of strength and adhesion of silicone-acrylic hybrid systems. Design/methodology/approach - The presence of Si-C bonds in phenyl silicone should be able to improve strength, adhesion and thermal properties of phenyl silicone-acrylic polyol coating Different weight ratios of phenyl silicone and acrylic polyol resins were blended in order to obtain the composition for optimum strength, adhesion and thermal properties. Strength was evaluated using an impact resistance tester. Coating adhesion was studied by measuring the contact angle and performing cross hatch cutting. The thermal properties were studied using differential scanning calorimetry. Findings - Blending phenyl silicone intermediate resin with acrylic polyol resin showed significant improvement in strength and adhesion properties compared to pure acrylic polyol resin This paper shows that the composition of such coatings influences the glass transition temperature (T-g), which in turn affects the strength and adhesion properties of the coatings The coating consisting of 30 per cent silicone resin and 70 per cent acrylic resin showed good adhesion and impact resistance properties on cold roll mild steel panels Research limitations/implications - Findings may be useful in the development of heat resistant and anti-corrosion paints Practical implications The blending method provides a simple and practical solution to improve the strength and adhesion properties of acrylic polyol resins Originality/value - Durability and functionality of the coating critically depend on the strength and adhesion properties of the materials This may be a useful source of information for the development of organic-inorganic coatings