Heat-resisting powder coating for auto vent pipe and preparing method thereof

Abstract

The invention provides heat-resisting powder coating for an auto vent pipe. The heat-resisting powder coating is prepared from, by weight, 10-20 parts of organosilicon-modified epoxy resin, 80-90 parts of o-cresol formaldehyde epoxy resin, 10-20 parts of hydroxyl polyester resin, 10-15 parts of polyisocyanate, 10-12 parts of polyester polyol, 1-2 parts of silane coupling agent, 1-2 parts of antioxidant 1010, 4-6 parts of ethylene propylene diene monomer, 3-5 parts of silicon carbide, 1-2 parts of boron nitride, 15-20 parts of mica powder, 2-3 parts of 2,6-tert-butyl-4-methylphenol, 0.5-1.0 part of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 15-18 parts of superfine barium sulfate, 8-10 parts of carbon black, 0.5-0.7 part of benzoin and 1-2 parts of performance additive. The coating is high in heat resistance, low in curing temperature, short in curing time, high in adhesive force and resistant to acid and alkali, and can be applied to coating of the auto vent pipe, and a coating film is high in levelling property and good in appearance.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a heat-resistant powder coating for automobile exhaust pipes and a preparation method thereof. Background technique [0002] With the advancement of modern science and technology and the development of modern industry, the problem of environmental pollution has become increasingly prominent, which poses a great threat to human beings themselves and the environment on which human beings depend. Traditional coatings will produce a large amount of toxic and harmful waste gas and waste water during the manufacturing process or during the construction process, which will pollute the environment, air and water resources, especially solvent-based coatings, which will release Volatile organic compounds (VOC) into the atmosphere, its amount has reached more than 50%, causing serious secondary pollution. This problem has attracted the attention of many industrial countries. [0003] As a kind of ...

AI Technical Summary

Problems solved by technology

Although the existing high-temperature-resistant powder coatings are more environmentally friendly than oil-based coatings, their popularization is limited due to their high cost and high-temperature curing (curing conditions are at least 230°C×20 minutes)

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