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The chemistry of painting cars and the recent development of water based paints.
Member rating: No Rating | Words: | Submitted: Mon Mar 15 2004
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The chemistry of painting cars and the recent development of water based paints Why paint cars? It is necessary to paint cars because the paint protects the steel of the car from corrosion, paint fills and smooths out any imperfections in the steel surface and it provides a durable, decorative, glossy appearance. If rusting continually takes place the car becomes unsafe. When water and oxygen come in contact with the metal of the car surface, several redox reactions happen. The oxygen is reduced to hydroxide ions and iron is oxidized to Fe2+ ions which pass into solution. More reactions happen which ultimately produce rust - Fe2O3H2O. The components of car paint There are three components of car paint, each one has different roles: * The pigment provides a barrier to protect car from atmosphere slowing the rate of corrosion. It disguises appearance of the steel car body, gives colour and other effects which enhance...
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