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Fluorocarbon coating for aluminum curtain wall plate and spraying process of fluorocarbon coating

A fluorocarbon coating and aluminum curtain wall technology, applied in radiation-absorbing coatings, coatings, devices for coating liquids on surfaces, etc., can solve problems such as weak UV resistance, reduce the use of solvents, and speed up film formation , the effect of good thermal stability

Pending Publication Date: 2020-04-28
广德创丽幕墙有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of fluorocarbon paint and spraying process thereof for aluminum curtain wall, by adding nanocomposite particles in the coating formula, nanocomposite particles are made of nano TiO 2 It is blended and modified with ZnO nanorods, which broadens the UV absorption frequency band of the coating and solves the problem of weak UV resistance of the existing fluorocarbon coatings. The fluorocarbon resin is modified by polyurethane to make the fluorocarbon resin both polyurethane materials. And the characteristics of fluorocarbon resin materials, and because the molecular structure of polyurethane has certain photosensitivity, free radical polymerization can be initiated by photocuring agent to achieve the curing effect of the coating. This process is faster and more energy-saving than the curing process of existing fluorocarbon coatings. Environmental friendly

Method used

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  • Fluorocarbon coating for aluminum curtain wall plate and spraying process of fluorocarbon coating
  • Fluorocarbon coating for aluminum curtain wall plate and spraying process of fluorocarbon coating
  • Fluorocarbon coating for aluminum curtain wall plate and spraying process of fluorocarbon coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation method of modified fluorocarbon resin is as follows:

[0034] S1. Under the protection of nitrogen, add 1.5kg of isophorone diisocyanate into the reaction kettle, heat to 70°C under stirring, add 1kg of polyethylene glycol-200 dropwise and react for 4 hours to obtain compound A. The reaction formula is as follows:

[0035]

[0036]S2. Dissolve 150g of azobisisobutyronitrile in 300g of methyl isobutyl ketone, and add compound A obtained in S1. At the same time, add 800g of chlorotrifluoroethylene and 300g of hydroxypropyl acrylate, and heat up to 90°C to continue the reaction for 5-8h , Methyl isobutyl ketone is removed by distillation under reduced pressure to obtain a modified fluorocarbon resin, the reaction formula is as follows:

[0037]

Embodiment 2

[0039] The preparation method of nanocomposite particles is:

[0040] ① Add 100g of zinc acetate dihydrate solution and 5g of polyacrylamide into 1L of deionized water, heat to 60°C and mix evenly, add 30% ammonia water dropwise, adjust the pH to 12-14, and polish the clean silicon substrate Immerse in the mixed solution, heat in a water bath to 80°C for 3 hours, take out the silicon wafer, dry it in an oven, rinse it repeatedly with hot deionized water, and get ZnO nanorods after drying;

[0041] ② Add 100g nano-TiO 2 Add 200g ZnO nanorods into 1L ethanol solution, stir for 2h, then add 60g epoxy silane coupling agent, continue stirring for 2h, distill under reduced pressure to remove ethanol, dry in a vacuum oven and grind to obtain nanocomposite particles.

Embodiment 3

[0043] The preparation method of fluorocarbon coating is as follows:

[0044] (1) Dissolve 100g of wetting and dispersing agent HY257, 25g of emulsified silicone oil, and 100g of polyacrylamide in deionized water, and stir at a stirring speed of 200r / min for 30min until the wetting and dispersing agent of HY257, emulsified silicone oil and polyacrylamide are dispersed evenly Finally, add 1kg titanium dioxide and 50g of the nanocomposite particles obtained in Example 2, increase the stirring speed to 450r / min and stir for 30min to obtain the pigment slurry;

[0045] (2) Add 2kg methyl methacrylate and 25g emulsified silicone oil to the modified fluorocarbon resin prepared in 3kg Example 1, stir at 450r / min to make the defoamer disperse evenly to obtain a fluorocarbon resin emulsion;

[0046] (3) Mix the modified fluorocarbon resin emulsion with the pigment slurry, stir at a speed of 200r / min for 45min, add 10g of 2-hydroxy-2-methyl-1-phenylacetone, and then continue to stir at ...

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Abstract

The invention discloses a fluorocarbon coating for an aluminum curtain wall plate and a spraying process of the fluorocarbon coating. The fluorocarbon coating is prepared from the following raw materials in parts by weight: 10-30 parts of modified fluorocarbon resin, 0.3-1 part of a wetting dispersant, 0.1-0.5 part of a defoaming agent, 0.5-1 part of a thickening agent, 8-12 parts of titanium dioxide, 10-20 parts of an active diluent, 0.1-0.5 part of nano composite particles and 0.01-0.1 part of a photocuring agent. According to the invention, chlorotrifluoroethylene is modified by polyurethane, such that modified fluorocarbon resin is obtained. The photosensitivity of the fluorocarbon resin is improved; the wear resistance, the adhesion and the water resistance are improved; the added photosensitivity enables the fluorocarbon coating to be subjected to free radical polymerization through the photocuring agent, so that the curing time of the coating is shorter, and the nano composite particles formed by compounding nano TiO2 and ZnO nanorods are added into the formula of the coating, so that the absorption frequency band of the coating to ultraviolet rays is widened, and the ultraviolet resistance of the coating is improved.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a fluorocarbon coating for aluminum curtain wall panels and a spraying process thereof. Background technique [0002] Fluorocarbon resin has small fluorine atomic radius, strong C-F bond energy, and dense internal structure, so it has good weather resistance, chemical resistance, corrosion resistance, and also has good stain resistance, hydrophobicity, and oleophobicity. It is widely used in coating materials of buildings. [0003] Although fluorocarbon resins have these advantages, when exposed to natural light for a long time, ultraviolet rays will cause color changes in appearance, and even coating deterioration and chalking. At present, the protection against ultraviolet rays is mainly through ultraviolet absorbers and hindered amine light stabilization. However, such reagents will partially volatilize after absorbing ultraviolet rays, which will affect the natural environmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/06C09D4/02C09D5/32C08F283/00C08F214/24C08G18/48C08G18/67B05D1/02B05D3/00B05D1/38B05D7/26B05D7/16
CPCB05D1/02B05D3/002B05D3/007B05D7/16B05D7/26B05D7/584C08F283/008C08G18/4833C08G18/672C08K7/08C08K9/06C08K2003/2241C08K2003/2296C08K2201/011C09D4/06C09D5/32C08F214/24
Inventor 南姝妤
Owner 广德创丽幕墙有限公司
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