Environment-friendly rust inhibiting primer

Abstract

The invention discloses environment-friendly rust inhibiting primer. The rust inhibiting primer comprises the following components in parts by weight: 20 to 50 parts of hydroxyl resin, 5 to 30 parts of amino resin, 2 to 8 parts of epoxy resin, 2 to 10 parts of coalescent, 8 to 20 parts of pigment, 2 to 30 parts of inorganic filler, 5 to 25 parts of organic solvent, 0.01 to 1.0 part of flatting agent, 0.05 to 3.0 parts of conductivity improver, 0.2 to 4 parts of dispersing agent, and 0.2 to 3.0 parts of coupling agent. The primer has good redissolution resistance, can perform 'wet on wet' spraying with undercoat and varnish, namely 'three spraying-one bake' to produce a film after a workpiece is sprayed by primer, undercoat and varnish in turn and is treated by baking once, and the performance of the film is equivalent to the conventional 'three spraying-three bake' process. The heavy metal content of the rust inhibiting primer can achieve the requirement of related laws and regulations, and is harmless to human health.

Description

technical field [0001] The invention relates to an antirust primer, in particular to an environment-friendly antirust primer. Background technique [0002] In order to obtain better decoration and corrosion resistance, various household appliances, motorcycle accessories and other metal parts are coated with multiple layers, such as primer, intermediate paint, varnish, etc. [0003] The traditional multi-layer coating process is generally carried out in the way of multiple coatings and multiple dryings, that is, after each spraying of a paint, it is dried first, and then the second paint is sprayed and then dried, and so on until the coating is completed. [0004] This production method is time-consuming and labor-intensive, and consumes a lot of energy during the baking process, which is not in line with the development trend of environmental protection. [0005] Traditional anti-rust primers contain a large amount of heavy metals such as lead and hexavalent chromium. Beca...

AI Technical Summary

Problems solved by technology

[0004] This production method is time-consuming and labor-intensive, and consumes a lot of energy during the baking process, which is not in line with the development trend of environmental protection

[0005] The traditional anti-rust primer contains a large amount of heavy metals such as lead and hexavalent chromium. Because this anti-rust primer contains a large amount of harmful substances, it can no longer meet the requirements of new environmental protection regulations, and its use is increasingly restricted.

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