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Aqueous fluorocarbon coating for painting metal base materials

A water-based fluorocarbon, metal substrate technology, applied in anti-corrosion coatings, coatings, etc., can solve problems such as poor performance

Active Publication Date: 2013-07-24
海丰县美达化工涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above-mentioned patents, the structures of fluorocarbon components, acrylic resins, and silicone acrylic emulsions have not been disclosed, and their performance is not good when they are used for coating metal parts.

Method used

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  • Aqueous fluorocarbon coating for painting metal base materials
  • Aqueous fluorocarbon coating for painting metal base materials
  • Aqueous fluorocarbon coating for painting metal base materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Hydrophobic and oleophobic key component of fluorocarbon coatings - preparation of silane / organochlorine co-modified fluororesin emulsion

[0026]Take the preparation of FLCHV resin emulsion as an example. Accurately weigh 27.2g perfluoroalkane ethyl acrylate (FA), 12.8g lauryl methacrylate (LMA), 1.5g hydroxypropyl acrylate (HPA), 2.0g 4-chloromethylstyrene (CMS ), 1.5g vinyltriethoxysilane (VTES), 1.2g sodium perfluoroalkylbenzenesulfonate (FBS), 1.7g fatty alcohol polyoxyethylene ether (AEO-9), 0.4g dodecanethiol, 92.7g of deionized water, mechanically stirred and mixed, and then pre-emulsified by ultrasonic wave at 25±2°C for 20min to make a stable pre-emulsion, recorded as component (I), placed in the dropping funnel (I), and set aside.

[0027] Another 0.8g of potassium persulfate was dissolved in 20g of water to make an aqueous initiator solution, which was recorded as component (II), and placed in the dropping funnel (II) for subsequent use.

[0028] In th...

Embodiment 2

[0043] The key component of hydrophobic and oleophobic fluorocarbon coatings—silane / organochlorine co-modified fluororesin FLCHK emulsion is prepared in Example 1 (1), and the method of crosslinking agent EPOS-1B is described in Example 1 (2).

[0044] In the reactor equipped with a speed-regulating motor, add 100.0g H 2 O, 1.0g dispersant OROTANTM 1124, 1.0g Cathone, stir to make it evenly mixed, then add 1.0g light stabilizer 770 and 100.0g nano-TiO 2 Disperse at high speed for 1 hour, then continue to add 500.0g of acrylic resin BSAHK emulsion, 500.0g of FLCHK emulsion and 30.0g of cross-linking agent EPOS-1B to the system. After stirring and mixing, add 3.0g of hydroxyethylcellulose and 10g of glycerin to adjust The viscosity of the system can be adjusted to obtain a uniform white fluid, that is, water-based fluorocarbon coating.

Embodiment 3

[0046] The key component of hydrophobic and oleophobic fluorocarbon coatings—silane / organochlorine co-modified fluororesin FLCNK emulsion is prepared in Example 1 (1), and the method of crosslinking agent EPOS-1C is described in Example 1 (2).

[0047] In the reactor equipped with a speed-regulating motor, add 200.0g H 2 O, 0.8g sodium polyacrylate PAAS dispersant, 2.0g Cathone, stir and mix well, then add 2.0g light stabilizer-770 and 80.0g nano-iron oxide pigment for high-speed dispersion for 1 hour, and then add 700.0g acrylic resin BSAHK in turn Emulsion, 300.0g FLCNK emulsion and 25.0g cross-linking agent EPOS-1C, after stirring and mixing, add 5.0g hydroxyethyl cellulose and 2.0g leveling agent RM2020 to adjust the viscosity of the system to obtain a uniform white fluid, that is, water-based Fluorocarbon coating.

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Abstract

The invention discloses an aqueous fluorocarbon coating for painting a metal base material. The coating is composed of a waterborne resin, an epoxy polyether-based (sesqui-) siloxane cross-linking agent, a metal nano-pigment, a dispersant, a preservative, a light stabilizer, a thickener, a flatting agent and H2O, wherein the waterborne resin is composed of 25-50% silane / organochlorine co-modifiedfluororesin emulsion and 50-75% acrylic resin emulsion in mass fraction. The aqueous fluorocarbon coating of the invention is capable of producing excellent water repelling pollution resisting effects after being brushed and solid on the surface of the metal base material.

Description

technical field [0001] The invention relates to a water-based fluorocarbon coating that can be used for surface coating of metal substrates such as aircrafts and automobiles, in particular to a water-based composite fluorocarbon based on silane / organochlorine co-modified fluororesin emulsion as the main component coating. Background technique [0002] Fluorocarbon coatings are coatings that use organic fluorine resins or polymers as the main film-forming substance. Fluorocarbon coatings have excellent weather resistance, durability and corrosion resistance, and can provide good antifouling and self-cleaning functions for the substrate. Therefore, they are used in aerospace, vehicles, chemical equipment coating, ship anticorrosion, elevated bridges (such as Hangzhou Bay cross-sea Bridge) and high-rise buildings (such as Beijing Bird's Nest) are widely used in maintenance-free aspects. It is a special functional coating that integrates high, new and unique features. It has th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/08C09D133/14C09D133/02C09D133/16C09D5/08C09D7/12
Inventor 安秋凤马丽许伟胡海龙
Owner 海丰县美达化工涂料有限公司
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