LEGEND OF CIVIL

    The essential ingredients of paints are: Base Vehicles Pigment Drier/ accelerator Thinner Base: It is a principal constituent of paint. It also possesses the binding properties of the finely divided material. It is opaque (untransparent) in nature. Commonly used bases for paints are white lead, red lead, zinc oxide, iron oxide, titanium white, aluminum powder and lithophone. A lead paint is suitable for painting of iron and steel works, as it sticks to them well. However it is affected by atmosphere action and hence should not be used as final coat. While zinc forms good base but is costly. Lithophone, which is a mixture of zinc sulphate and barytes, is cheap. It gives good appearance but is affected by day light. Hence it is used for interior works only. Vehicles : It helps to mix the various ingredient use in paint. The vehicles are the liquid substances which hold the ingredients of a paint in liquid suspension and allow them to be applie...