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Water dispersible fluorocarbon finish coating and preparation method thereof

A fluorocarbon topcoat, dispersion-type technology, applied in the field of coatings, can solve problems such as limited use, and achieve the effects of improving wear resistance, appearance performance, and good stain resistance

Inactive Publication Date: 2014-04-09
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since PVDF resin is insoluble in ordinary solvents, the formation of the coating film requires high temperature sintering at 230-250 ° C to form a film, so it can only be applied to aluminum curtain wall panels, aluminum profiles, color steel plates, etc. with fixed processing places and baking equipment. On the base material of high temperature resistant exterior wall decoration materials, which limits its use

Method used

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  • Water dispersible fluorocarbon finish coating and preparation method thereof
  • Water dispersible fluorocarbon finish coating and preparation method thereof
  • Water dispersible fluorocarbon finish coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The formula of water-dispersible fluorocarbon topcoat coating in the present embodiment is as follows:

[0031]

[0032]

[0033] The fluorocarbon resin described in this example is polyvinylidene fluoride (PVDF) fluorocarbon resin or similar products with the trademark "Kynar500"; the acrylic resin is pure acrylic emulsion with a solid content of 40-60%; Foaming agent, anti-settling agent, antifoaming agent, dispersant, emulsifier, antibacterial agent; solvent is a mixture of water and the aforementioned organic solvent; silica filler is 30±5nm nano-silicon dioxide.

[0034] Add the fluorocarbon resin, acrylic resin and additives in this example to the solvent to disperse evenly; add silica filler at a temperature of 25-45°C, disperse evenly and grind to obtain a water-dispersible fluorocarbon topcoat.

Embodiment 2

[0036] The formula of water-dispersible fluorocarbon topcoat coating in the present embodiment is as follows:

[0037]

[0038] The fluorocarbon resin, acrylic resin, additives, and solvents described in this embodiment are the same as those in Embodiment 1; the silica filler is nano-silica with a particle size of 50±5nm.

[0039] Add the fluorocarbon resin, acrylic resin and additives in this example to the solvent to disperse evenly; add silica filler at a temperature of 25-45°C, disperse evenly and grind to obtain a water-dispersible fluorocarbon topcoat.

Embodiment 3

[0041] The formula of water-dispersible fluorocarbon topcoat coating in the present embodiment is as follows:

[0042]

[0043]

[0044] The fluorocarbon resin, acrylic resin, additives, and solvents described in this example are the same as in Example 1; the silica filler is 6000-mesh silica micropowder.

[0045]Add the fluorocarbon resin, acrylic resin and additives in this example to the solvent to disperse evenly; add silica filler at a temperature of 25-45°C, disperse evenly and grind to obtain a water-dispersible fluorocarbon topcoat.

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Abstract

The invention discloses a water dispersible fluorocarbon finish coating. The finish coating consists of the following components in percentage by weight: 20-25% of fluorocarbon resin, 8-11% of acrylic resin, 1-10% of silicon oxide filler, 5-10% of auxiliaries and 50-60% of a solvent. The water dispersible fluorocarbon finish coating disclosed by the invention has a self-cleaning effect and is excellent in stain resistance; meanwhile, the coating improves apparent property through addition of the inorganic filler silicon oxide; the finish coating, through regulating proportion of the silicon oxide filler, can achieve coating effects of high light, semi matte and lusterless, and can improve wear-resisting property of the coating.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a water-dispersed fluorocarbon topcoat coating and a preparation method thereof. technical background [0002] Fluorocarbon coatings have excellent weather resistance, friction resistance, wipe resistance, stain resistance, acid resistance, alkali resistance, oil repellency, water repellency and other properties. The excellent anti-corrosion performance benefits from the excellent chemical inertness, the paint film is resistant to acids, alkalis, salts and other chemical substances and various chemical solvents, and provides a protective barrier for the substrate; this type of paint film is tough, with high surface hardness, impact resistance, Good buckling resistance and wear resistance, showing excellent physical and mechanical properties. Maintenance-free and self-cleaning characteristics are manifested in the extremely low surface energy of the fluorocarbon coating, the surface dust ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/16C09D133/08C09D7/12C09D5/16
Inventor 张青罗正鸿周寅宁
Owner SHANGHAI JIAO TONG UNIV
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