INDUSTRIAL PAINT ( components,types,applications)

INDUSTRIAL PAINTS

 Paints are colloidal solution composed of pigment (coloured material) and solvent to be applied on different surfaces for different purposes.

Apart from colouring, paints are used for many different purposes.

Different paints have different characteristic properties depending on the pigment, solvent and other components used in it.

PAINT

COMPONENTS OF PAINT

PIGMENT

Pigments are fine insoluble particles that impart colour to paint. Pigment appears coloured because it absorbs and reflects certain wavelengths of the visible light. The wavelength of light it reflects is the colour of the pigment.  The wavelength of light that is reflected by pigment depends on the particle size of pigment.

pigments

SOLVENT

Solvent is used to spread the paint on the surface on which it is to be applied. When the paint is applied on a surface the solvent vaporizes and the pigment settles forming a film of paint on the surface.

BINDER

Binder holds the particles of pigment together in a paint .It is one of the major component of the paint which keeps the pigment in place after the paint dries.

ADDITIVES

Additives are added in paint to improve the storing properties of the paint, to stabilize pigment particles, to improve weather resistance.

COMPOSITION

Pigment – 25%

Solvent – 40%

Binder – 30%

Additives – 5%

VISCOSITY OF PAINTS

It is thickness of the paints and is the ability to resist spreading. It is inversely proportional to the amount of solvent used. Viscosity is necessary to provide consistent results and acceptable brushing and spraying.

brushing

TYPES OF PAINTS

ALKYD PAINTS

These are also called oil based paints. These paints provide a high gloss and a durable finish. It is the most suitable paint for furniture. It also has some negative points which includes yellowing with age. Yellowing is accelerated in absence of light.

ACRYLIC PAINTS

These are fast drying paints which are soluble in water but become resistant to water when they become dry. These are widely used for painting.

ACRYLIC COLOURS

EPOXY PAINTS

These are used to create tough solvent resistant coat. These are commonly used to protect heavily trafficked areas. It can be applied to concrete floors to provide a durable , high performance surface.

EPOXY PAINT

SOMEOF THE BASIC USES OF PAINTS

Paints are used to protect all sort of metal objects from the effects of sun and water.

Many paints are used as heat resistants in hot and dry regions to prevent the conduction of heat in various structures.

Paint is also applied on furniture to prevent the seepage of water into it.

Paints (epoxy paints) are also used in making surfaces smooth.

Many anti-bacterial paints have been discovered to improve hygiene