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Etch Primer With Hardener
Etch Primer With Hardener
Tuff Coat Polymers Pvt Ltd, an ISO 9001: 2008 certified company, offers Etch Primer with Hardener. This specification covers, 'Etching Primer' to be used specifically for engineering units. It covers basic know-how of the primer properties, application and advantages. This is two component system. The base is based on polyvinyl acetyl resin say polyvinyl butyral one. Polyvinyl resin gives water resistance through its paraffin structure while dioxin link nucleus of six atoms gives rise to a noticeable chemical resistance. Resin solution is clear, colourless gives excellent hardness and flexibility to the film. Etch primer is also known as wash primer and referred to as metal conditioner. Compared with other corrosion inhibiting materials, this is unique and most effective because it offers in a single treatment several means of preventing corrosion. It gives excellent adhesion to many substrates; faster drying is also advantageous. The action of etch primer over steel or say, for example metal is three folds: Firstly an iron oxide and zinc phosphate film similar to that formed in common phosphating process is deposited on the metal. Secondly this primer also provides a continuous supply of chromate ions for the repair of any pinholes present in the phosphate film. Special chromate rinse is eliminated. And thirdly, the polyvinyl butyral or formal film is chemically bound in the organic layer through a chromium complex, thus providing additional mechanical protection to the metal surface. This primer is used for storage tanks, ships, airplanes, bridges, dam locks, agricultural equipment, etc. Etch primer is applied in all cases where paint coating require weathering, seawater resistance and on damp metallic surfaces. It is having excellent heat resistance and on damp metallic surfaces. It is having excellent heat resistance up to 400°C.