Single-component aqueous fluorocarbon paint and preparation method thereof

Abstract

The invention relates to single-component aqueous fluorocarbon paint and a preparation method thereof. On the basis of using a single-component aqueous fluorocarbon emulsion PF-919 as a base material, conventionally used various pigments, fillings and auxiliary agents are added to prepare the single-component aqueous fluorocarbon paint capable of being cured at room temperature. The preparation method comprises the following steps of: adding water into a stirring jar with low speed stirring, sequentially adding a dispersant, a wetting agent, a defoamer, a pH value regulator and propylene glycol butyl ether, and stirring; sequentially adding titanium pigment, precipitated barium sulfate and calcined kaolin, and dispersing at high speed until pulp fineness is smaller than or equal to 30 microns; sequentially adding an aqueous fluorocarbon emulsion, a film forming auxiliary agent and the defoamer; and finally adding an antiseptic, adjusting a product to reach the proper viscosity through a flatting agent and a thickening agent, and stirring at low speed to obtain the product. The single-component aqueous fluorocarbon paint has good weather resisting property and antifouling performance, simple construction and good environmental protection property, and is excellent special paint for external walls.

Description

technical field [0001] The invention relates to a paint for building, in particular to a single-component water-based fluorocarbon paint specially used for exterior walls. The invention also relates to a preparation method of the fluorocarbon paint. Background technique [0002] In recent years, with the rapid development of my country's economy and architectural decoration industry, the environmental pressure has become more and more serious. People's coating requirements for various functional and protective decorative architectural coatings have become increasingly strict and optimized, especially for exterior wall coatings. The anti-fouling performance has higher requirements. [0003] Fluorocarbon resin exterior wall paint is a kind of exterior wall paint with fluorocarbon emulsion as binder. Compared with the C-H bond or C-C bond contained in ordinary resin paint, the F-C bond in fluorocarbon resin paint has a smaller bond distance. , high bond energy, anti-cracking a...

AI Technical Summary

Problems solved by technology

[0005] 1) The production process of fluorocarbon resin is more, the process control precision is high, the production is difficult, the price is about 10 times higher than similar resins, and the price is expensive

[0006] 2) The construction of fluorocarbon coatings is difficult. Compared with ordinary paints, the requirements for base treatment are high and the process is complicated. Complicated putty layers and intermediate coatings must be done well.

[0007] 3) Solvent-based fluorocarbon coatings need to add solvents during the construction process, which can easily cause environmental pollution and put a lot of pressure on environmental protection, limiting their large-scale promotion