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Water-based paint applied in aluminum-plastic plates and color steel coiled material

A water-based paint and pigment technology, applied in the paint field, can solve the problems of increasing respiratory diseases, reproductive system diseases, failing to meet the process requirements, poor paint effect, etc., achieving excellent solvent resistance (xylene) and not affecting production Efficiency, the effect of good marketing value

Active Publication Date: 2014-02-26
天津梓明涂料制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the most common surface coating products for decorative aluminum-plastic panels on the market are acrylic amino baking varnish, polyester amino baking varnish, epoxy baking varnish, etc. They are all oily products, and their common disadvantages are: all use toluene, di Toluene, ethyl acetate, butyl acetate and other harmful volatile solvents
It has high requirements on construction conditions and is extremely harmful to the environment, which greatly increases the chances of operators and users suffering from respiratory diseases, reproductive system diseases, cancer and other malignant diseases
Moreover, the above-mentioned types of products all contain a large amount of harmful heavy metals, which will remain in the coating for a long time and seriously affect the environment.
Moreover, in practice, it is found that most water-based resins have the characteristics of slow drying speed, low gloss, poor chemical resistance, and lower solid content than oil-based resins, resulting in poor coating effects or unable to meet the actual production process requirements.

Method used

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  • Water-based paint applied in aluminum-plastic plates and color steel coiled material
  • Water-based paint applied in aluminum-plastic plates and color steel coiled material
  • Water-based paint applied in aluminum-plastic plates and color steel coiled material

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preparation example Construction

[0022] The preparation method of nano fumed silica slurry is to add 5 parts of water-based dispersant and 2 parts of water-based wetting agent to 100 parts of ethanol and stir until uniform, then add 20 parts of fumed silica and stir until uniform, soak for 24 hours and then grind Complete the preparation to a fineness of 2 μm

[0023] The character description for the used component of the present invention is as follows:

[0024] Water-soluble acrylic resin: an acrylic resin that contains enough polar groups or ions in the main chain or side chain to be soluble in water; mainly includes poly(meth)acrylic acid, poly(meth)acrylamide and some N-substituted poly(meth)acrylamide, poly(meth)acrylate, etc.; used in the examples of the present invention were purchased from Tianjin Ziming Chemical Co., Ltd., the product model is 503.

[0025] Water-soluble amino resin: it is an amino resin that can dissolve in water. The amino resin used in the embodiment of the present invention is...

Embodiment 1

[0041] Embodiment 1 is used for the white paint of aluminum-plastic panel surface coating

[0042] First prepare adhesion promoter, its preparation method is as follows:

[0043] 1) Mix and stir 100 g of branched-chain polyester resin and 5 g of N, N-dimethylethanolamine; the stirring time is 20 min;

[0044] 2) Then mix and stir 50 g of N-methylpyrrolidone and 5 g of 3-(2,3-epoxypropoxy)propyltrimethoxysilane; stir for 20 minutes in the same way;

[0045] 3) Warm up the mixed solution prepared in step 1) to 95°C, then add dropwise the solution prepared in step 2) (completely added within 10-15 minutes), stir and react for 30 minutes, and then cool down to 40°C after the reaction is completed. After ℃, add 1 g of N,N-dimethylacetamide, and stir for 20 minutes to complete the preparation.

[0046] Prepare nano fumed silica slurry, add water-based dispersant 5g, water-based wetting agent 2g in 100ml ethanol (in the specification sheet of the present invention, ethanol, water 1...

Embodiment 2

[0051] Embodiment 2 is used for the silver paint of aluminum-plastic panel surface coating

[0052] The silver paint used for the surface coating of aluminum-plastic panels, the distribution ratio of each component (by weight):

[0053]

[0054] Wherein the adhesion promoter and the nano fumed silica slurry are prepared by the method described in Example 1, but the amounts of the components can be adjusted within the scope of the description of the invention.

[0055] When preparing coatings, add water-soluble acrylic resin, water-soluble amino resin, water-based polyurethane resin, water-based leveling agent, water-based dispersant, adhesion promoter, and water-based defoamer to a clean container in sequence, stir evenly, and filter (800-mesh filter screen) for subsequent use; then mix and stir with nano fumed silica slurry for 30 minutes, then add aluminum slurry and water and stir evenly to obtain the finished water-based paint. In order to have a better effect during u...

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Abstract

The invention provides a water-based paint applied in aluminum-plastic plates and a color steel coiled material. The water-based paint comprises the following components by weight: 30-55 parts of water soluble acrylic resin, 5-10 parts of water-based polyurethane resin, 4-10 parts of water soluble amino resin, 0.1-2 parts of a water-based dispersion agent, 0.1-2 parts of a water-based leveling agent, 0.1-2 parts of a water-based defoaming agent, 20-30 parts of water for the paint, 3-8 parts of an adhesion promoter, and 0.5-2 parts of a nano fumed silica slurry. The water-based paint has the main volatile which is water, thereby having no harm to the environment and operators. The water-based paint has the product quality which is equal to or slightly higher than the coating effect of an oily product. Moreover, the water-based paint has fast drying speed, can satisfy continuous and high-speed production in aluminum-plastic plate industry, and does not affect the production efficiency. Compared with an oily acrylic amino stoving varnish, the water-based paint has excellent solvent resistance, and has quite good market popularizing value.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a water-based coating applied to aluminum-plastic panels and color steel coils. Background technique [0002] At present, the most common surface coating products for decorative aluminum-plastic panels on the market are acrylic amino baking varnish, polyester amino baking varnish, epoxy baking varnish, etc. They are all oily products, and their common disadvantages are: all use toluene, di Toluene, ethyl acetate, butyl acetate and other harmful volatile solvents. It requires high construction conditions and is extremely harmful to the environment, which greatly increases the chances of operators and users suffering from respiratory diseases, reproductive system diseases, cancer and other malignant diseases. And the above-mentioned several types of products all contain a large amount of harmful heavy metals, which will remain in the coating for a long time and seriously affect t...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D175/04C09D161/20C09D7/12
Inventor 王立明
Owner 天津梓明涂料制造有限公司
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