Advances in Polyurethane and Polyurea Technology - PaintSquare文档.ppt

Application Equipment * Application Equipment * Polyurethane Applications Roof coatings Pipe Tank interior/exterior Truck bed liners Railcars Parking decks Anti-graffiti coatings Caulk/joint/sealant materials * Polyurea Applications Roof coatings Pipe Tank linings Truck bed liners Railcars Parking decks Caulk/joint/sealant materials * Polyurethane Systems Conventional polyurethane for steel structures (exterior tank, bridges) Surface preparation: SP 10, profile 2-3 mils Application: Zinc primer @ 3 – 5 mils DFT Epoxy intermediate @ 4 – 6 mils DFT Aliphatic polyurethane @ 3 – 5 mils DFT * Polyurethane Systems Waterborne polyurethane for steel /concrete (anti-graffiti coating) Surface preparation: abrasive blast cleaning Application: Sealer/primer for concrete 2 coats waterborne urethane primer @ 2 – 3 mils DFT/coat 2 coats waterborne urethane finish @ 2 – 3 mils DFT/coat * Polyurethane Systems Waterborne polyurethane properties Tensile strength: 5950 psi Elongation: 150% Taber abrasion: 45 mg loss/1000 cycles Graffiti resistance: Level 3, ASTM D6578 * Polyurethane Systems Waterborne polyurethane chemical resistance MEK double rubs, 300+ cycles Gasoline: no effect after 7 days 50% NaOH: no effect after 24 hours 10% HCl: no effect after 24 hours Toluene: no effect after 4 hours * Polyurethane Systems Steel pipe (exterior) coating Surface preparation: SP 10, profile 2.5 mils minimum Application: 100% solids polyurethane @ 13 – 15 mils DFT * Polyurethane Systems Concrete tank lining Surface preparation: ASTM D4259/ ICRI 03732, CSP 5 Application: Epoxy primer @ 5 – 7 mils DFT 100% solids elastomeric polyurethane @ 60 – 80 mils DFT * Polyurethane Systems Elastomeric polyurethane properties Shore A hardness: 60 Adhesion to concrete: 350 psi Elongation: 400% Tear strength: 150 psi Tensile strength: 900 psi * Polyurethane Systems Elastomeric polyurethane chemical immersion Acetic acid, 10% Hyrdochloric acid, 10% Methanol Nitric acid, 10% Phos