Normal temperature curing fluorocarbon resin coating and preparation method thereof

Abstract

The invention discloses a normal temperature curing fluorocarbon resin coating. The coating comprises the following components in percentage by weight: 38 to 60 percent of chlorotrifluoroethylene-vinyl ester polymer, 5 to 10 percent of coupling agent, 1 to 6 percent of pigment, 1 to 5 percent of nanoparticles, 0.05 to 2 percent of aid, 20 to 45 percent of solvent, 5 to 15 percent of curing agent and 0.003 to 0.05 percent of drier, wherein the coupling agent is fluorosilane with -CF3 and -CF2 groups; the aid is a defoamer or a surfactant; the solvent is xylene and methyl isobutyl ketone or butyl acetate and the methyl isobutyl ketone; and the drier is dibutyltin dilaurate. By adopting a specific coating formula, the solubility of fluorocarbon resin in the solvent is improved, the added aid, pigment and the like are soluble, various components are easy to disperse in various dispersion modes, the coating is convenient to operate on site, the adhesion of the coating can reach level 0 and the coating has high scratch resistance and high acid, alkali and salt resistance.

Description

technical field [0001] The invention belongs to the paint industry, in particular, the invention relates to a normal temperature curing fluorocarbon resin paint and a preparation method thereof. Background technique [0002] The fluorine atoms in the anti-fouling flashover normal temperature curable trifluoro resin are wrapped around the carbon chain with its extremely low surface energy and the small van der Waals radius between the fluorine atoms. After being fully dispersed with other additives in an organic solvent, the system will Due to the self-delamination effect, the cured coating film is neatly arranged on the surface due to the ultra-low surface energy of fluorine atoms, so that the substrate is completely isolated from the outside world, and it is difficult for water, air and other chemicals to penetrate. The ultra-low surface energy of the paint surface, and the addition of wax powder to the paint makes the paint have a rough structure on the surface. The paint ...

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Problems solved by technology

[0004] Nowadays, room temperature curing fluorocarbon resin (FEVE) is widely used in heavy-duty anti-corrosion, and the research on steel anti-corrosion has achieved good results. However, due to the high building energy of the C-F bond, the solubility of fluorocarbon resin in solvents is poor. Added additives, pigments, fillers, etc. are difficult to dissolve, and the dispersion of the paint becomes a big difficulty, which brings great inconvenience to the construction on site