Zinc oxide-containing powder coating and preparation method thereof

Abstract

The invention discloses a zinc oxide-containing powder coating and a preparation method thereof. The powder coating comprises the following raw materials by weight part: 40-50 of novolac resin, 45-55 of novolac epoxy resin, 70-75 of rosin resin, 18-22 of nanoscale titanium dioxide, 8-12 of zinc oxide, 25-30 of dolomite powder, 4-6 of dapsone, 8-10 of activated carbon powder, 3.5-5.5 of hexamethylenetetramine and 4.0-5.0 of a film forming agent. The powder coating disclosed in the invention adopts the novolac resin and novolac epoxy resin as main raw materials, and zinc oxide, activated carbon powder and the film forming agent are added to enhance the mixing property among each raw material. Meanwhile, the surface leveling of the powder coating is improved, and the powder coating has high gloss retention and improved decorative property. The prepared product has a high qualified rate.

Description

Technical field [0001] The invention relates to powder coatings, in particular to a powder coating containing zinc oxide and a preparation method thereof. Background technique [0002] With the continuous and stable growth of China's economy and the continuous improvement of people's living standards, the powder coating business of metal components is also increasing, especially in the industries of instrumentation, transportation facilities, and aluminum profiles. Powder coating can provide excellent corrosion protection for metals. Protection and decoration performance, but due to the unsatisfactory anti-pollution performance of the existing coatings used in the above fields, various types of dust, dirt and even oil stains are often attached to the coating; the anti-sticking ability is not ideal, and the existing powder coatings are formed The coating is prone to blistering, cracking, and peeling under the influence of natural conditions such as long-term outdoor exposure and r...

AI Technical Summary

Problems solved by technology

[0002] With the continuous and stable growth of my country's economy and the continuous improvement of people's living standards, the powder coating business of metal components is also increasing, especially in industries such as instruments and meters, transportation facilities, and aluminum profiles. Powder coating can provide metals with excellent anti-corrosion However, due to the unsatisfactory anti-pollution performance of the existing coatings used in the above fields, various types of dust, dirt and even oil are often attached to the coatings; the anti-sticking ability is not ideal, and the existing powder coatings form Under the influence of natural conditions such as long-term outdoor exposure and rain, the coating is prone to blistering, cracking, peeling, etc. Therefore, the mechanical properties of the coating are not ideal