JOHNSEN GLOBAL CONSULTING PRESENTS PAINT TECHNOLOGY INTRODUCTION Paint
JOHNSEN GLOBAL CONSULTING PRESENTS PAINT TECHNOLOGY INTRODUCTION Paint and paint composition
Paint definition • A liquid material which can be applied on a suitable substrate and which after drying/curing forms a coherent and adhering film.
Why use paint? Paints are used for: Protecting against: – corrosion – degradation – fouling – abrasion – contamination Other reasons: decocation warning/safety camouflage image ease of cleaning ease of decontamination
Paint Composition • Binders • Solvents • Pigments • Additives • Extenders Binders Pigments Extenders Solvents Additives
Binder Contribute to: • Non-volatile part • Adhesion • Cohesion • Paint properties Click here for examples Binders Pigments Extenders Solvents Additives
Binder examples • Bitumen, Tar • Chlorinated Rubber, Vinyl, Acrylic • Silicone, Silicate • Alkyd, Modified Alkyd • Epoxy, Polyurethane Binders Pigments Extenders Solvents Additives
Pigment characteristics • Non-volatile part • Colour • Opacity • Other functional properties Examples Binders Pigment volume concentration Pigments Extenders Solvents Additives
Pigment examples • Titanium dioxide (white) • Iron oxide (yellow, red) • Iron oxide (black), carbon black • Coloured, organic/inorganic • Metallic Binders Pigments Extenders Solvents Additives
Paint composition Pigment volume concentration glo ss CPVC = Critical Pigment Volumen Concentration Permeability CPVC 0% PVC (%) = Binders 100% pigment volume pigment + binder volume Pigments Extenders x 100 Solvents Additives
Extender characteristics • Non-volatile part • Mechanical strength • Application properties • Cost reduction Examples Binders Pigments Extenders Solvents Additives
Extender examples • Carbonates • Silicates Binders Pigments Extenders Solvents Additives
Solvent characteristics • Volatile part • Dissolution of binder • Application properties • Drying time • Flash point Examples Binders Solvent use Pigments Extenders Solvent in paints Solvents Additives
Solvents examples • Plain hydrocarbon – Aliphatic (white spirits) – Aromatic (benzene, toluene, xylene) • Oxygenated hydrocarbon – Alcohol (ethanol, butanol) – Ester (butyl acetate) – Ether/alcohol (ethylene glycol) – Ketone (MEK, MIBK) Binders Pigments Extenders Solvents Additives
Solvents use – Aliphatic - Alkyd, Acrylic – Aromatic - Chlorinated rubber, vinyl – Alcohol - Zinc silicate, Epoxy – Ester - Epoxy, polyurethane – Ether/alcohol - Epoxy. Polyester – Ketone - Epoxy, Vinyl Binders Pigments Extenders Solvents Additives
Solvents in paints Indicative content of solvent in different generic types of paint Cl-rubber, vinyl, acrylic Alkyd Epoxy, Polyurethane Water borne 0 Binders Pigments 100 Extenders 200 300 400 500 g/ltr Solvents Additives
Additives characteristics • Enhancement of desired properties • Aid in the manufacturing process • Very small amounts (big contribution) Examples Binders Pigments Extenders Solvents Additives
Additives examples • Anti-settling agents • Anti-skinning agents • Driers • Plasticizers • Wetting agents, Coalescing agents • Preservatives, fungicides Binders Pigments Extenders Solvents Additives
Congratulations You completed the first tutorial on paint components and functions. You can now move on to the second Tutorial which is on paint classification.
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