Iron oxide forms the base of all sorts of iron paints. Titanium white is not affected by factors such as light, heat as well as acids.ĭue to its high refractive index, titanium white possesses excellent hiding power and is generally used as an undercoat in all types of exterior and interior organic coating. It consists of chemically inert pigment and is non-poisonous in nature. Titanium white is highly opaque in nature. The limitation of zinc oxide is that it is costly, less durable, and less workable.Īfter hardening, it is prone to surface cracking. It is highly desirable because it is non-poisonous and resistive to corrosion as well as sulphur attacks.
Zinc oxide is smooth and transparent in nature. It essentially consists of white powder and is also available in paste form by grinding with linseed oil. It is basically an oxide of zinc and constitutes the base for almost all zinc paints.
The disadvantage of red lead is that it is poisonous in nature and must not be used when fresh. It can also be used as a drier as it solidifies quickly when mixed with linseed oil. It is commonly used for the painting of ironworks and also as a priming coat on wooden surfaces. Red lead as paint base dries quickly, is durable, and has a fresh appearance. It is also available in the market in two forms i.e. The bright red color is imparted by the presence of the oxide of lead. It must always be kept covered as it is prone to discoloration under exposure to the air. However, it is not suitable for metal works. It can be applied easily and has excellent covering powder. White lead is dense and water-proof in nature. The stiff-paste form is made by mixing the white lead with linseed oil. It is available in the market in a variety of forms commonly powder form and stiff paste form. White Lead is used extensively for the painting works of the building and woodworks. White lead, red lead, zinc oxide, zinc white, iron oxide, titanium white, aluminum powder, lithophone, etc. It also prevents the paint from cracking particularly shrinkage cracking. The base makes the paint opaque, harder, and elastic in nature. It can be defined as the solid substance in a fine state which forms the body of the paint. The base is one of the main components of paint and is also commonly referred to as the body of paint. The paint must provide a long-lasting pleasing appearance. The brush marks should not appear after application. It must be resistive to blistering, cracking, and moisture. The color imparted by the paint should not fade away within a short period of time. It must be able to resist the weathering effects as well as corrosion. The paint must have a good hiding power and must impart the required color.Į. It must be able to form an elastic, tough, and hard film upon drying.Ĭ. Paint should have high coverage and durability.ī. The characteristic of good paint can be listed as follows:Ī. For different conditions, different types of paints are desirable. It is also used to enhance the aesthetic appearance of the structure.Īll paints are not suitable for all conditions. It is used as a protective covering to prevent corrosion, chemical attacks, and other weathering effects. It is usually applied to the surface by spraying or brushing. It is a combination of pigments with appropriate thinners or oil. It is basically stored and applied as a liquid but eventually dries into a solid after application.
Paint is also available in a wide variety of colors. The most common types of paint formulae available in the market are oil-based formulae and water-based formulae. it can hide the surface to which it is applied.Ī wide variety of paints with various formulae are used all over the world. Paint is basically a pigmented opaque material i.e. The base, vehicle, thinner, and pigments are the main components of paint. In other words, paint can be understood as the substance that is commonly used as the final finish to the surfaces of the structures for protecting or decorating the surface. The primary objective of paint is to protect, impart color and provide texture to the surface where it is applied. Paint can be defined as the pigmented liquid with a liquefiable nature that substrates into a thin layer and converts to a solid film upon application.
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