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Environment-friendly water-based single-component aluminum paint and preparation method thereof

A one-component, environmentally friendly technology, used in anti-corrosion coatings, fire-retardant coatings, coatings, etc., can solve the problems of low thickening efficiency of water-based rheological additives, inability to achieve strong pseudoplasticity, and narrow construction window. Reduce damage and harm to the human body, fast drying, smooth appearance

Inactive Publication Date: 2018-05-18
西安经建油漆有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the construction window of these methods is narrow, and often when the air humidity is high and the spraying film thickness is high, the silver powder will still appear black, especially when some water-soluble resins or high-hydroxyl content aqueous dispersion resins are selected. Contains a large number of hydrophilic groups, which makes the thickening efficiency of water-based rheological additives extremely low, and cannot meet the requirements of strong pseudoplasticity

Method used

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  • Environment-friendly water-based single-component aluminum paint and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0021] An environment-friendly water-based one-component aluminum color paint, which is composed of the following raw materials in weight percentage: 75%-80% of water-based acrylic emulsion, 5.0%-8.0% of water-based aluminum powder paste, 3.0%-6.0% of silver powder alignment aid, Wet agent 0.3%~0.5%, defoamer 0.5%~0.8%, adhesion promoter 0.1%~0.5%, thickener 0.2%~0.6%, amine neutralizer 0.2%~0.5%, cosolvent 5.0% ~9.0%, dispersant 0.1%-0.3%.

[0022] The water-based acrylic emulsion selected by the present invention is a thermoplastic product with macromolecular type and low hydroxyl content (%). After adjusting the pH with an amine neutralizer, it reaches more than 8, has extremely strong pseudoplasticity, and does not need to use any rheological aids. agent, which greatly simplifies the formulation workload; choose environmentally friendly water-based aluminum powder, and the water-based aluminum powder is coated with silicon dioxide on the surface (nano-silica surface deposi...

Embodiment 2

[0024] On the basis of Example 1, the manufacturer of the water-based acrylic emulsion is Liangu Fine Chemical Co., Ltd.; the manufacturer of the water-based aluminum powder slurry is Hefei Xuyang Aluminum Pigment Co., Ltd.

[0025] The silver powder alignment aid is a polyamide wax rheology aid with a non-volatile content>20wt%, such as BYK-8421 (industrial grade German BYK company), water-based polyamide wax produced by Dongguan Longhai New Material Technology Co., Ltd. Amide wax additive 7800; the silver powder alignment additive has a good orientation effect on aluminum powder, avoiding uneven gloss and blackening of the paint film.

[0026] The wetting agent is a polyether siloxane copolymer wetting agent with a non-volatile content>95wt%, such as the wetting agent ADDSIL 3078B produced by Jiaderun Company and the TEGO-4100 produced by Tego; The agent is mainly used to reduce the surface tension and allow the product to be applied evenly.

[0027] The defoamer is a polye...

Embodiment 3

[0034] The preparation method of described environment-friendly water-based one-component aluminum color paint, comprises the following steps:

[0035] 1) Add the formulated amount of co-solvent into the batching kettle, and then add the formulated amount of water-based aluminum powder slurry, amine neutralizer, silver powder alignment aid, and dispersant into the batching kettle under stirring conditions, and stir for 10-20 After 10 minutes, stop stirring and soak for 24 hours for subsequent use;

[0036] 2) Add the formulated amount of water-based acrylic emulsion, wetting agent, defoamer, and adhesion promoter into a clean slurry mixing tank and stir for 20-30 minutes under stirring conditions, and then add the pre-soaked slurry obtained in step 1) Add to the mixing tank and stir for 5 to 10 minutes; finally add the thickener in the formulated amount to adjust the viscosity, and stir evenly to obtain the environmental-friendly water-based one-component aluminum color paint....

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Abstract

The invention discloses environment-friendly water-based single-component aluminum paint and a preparation method thereof. The water-based single-component aluminum paint is prepared from, by weight,75-80% of water-based acrylic acid emulsion, 5.0-8.0% of water-based aluminum paste, 3.0-6.0% of silver powder array addition agent, 0.3-0.5% of wetting agent, 0.5-0.8% of antifoaming agent, 0.1-0.5%of adhesion promoter, 0.2-0.6% of thickener, 0.2-0.5% of amine neutralizer, 5.0-9.0% of cosolvent and 0.1-0.3% of dispersing agent. The prepared water-based single-component aluminum paint is safe andenvironment-friendly paint, has the advantages of high drying speed, good weather resistance, smooth coating appearance, gentle color and luster, good heat resistance, good adhesive force to metal materials and the like, can be applied to coating and protection of light metal materials such as aluminum alloy, and can also be matched with anti-corrosive primer and used for base materials such as steel and iron to achieve a good anti-corrosive decorative effect.

Description

technical field [0001] The invention belongs to the technical field of environment-friendly coatings, and in particular relates to an environment-friendly water-based one-component aluminum color coating and a preparation method thereof. Background technique [0002] In order to obtain a good silver powder alignment effect, the conventional method is to select some rheological additives that enhance low-shear viscosity in the formula to adjust the pseudoplasticity of the system, thereby enhancing the silver powder alignment effect. However, the construction window of these methods is narrow, and often when the air humidity is high and the spraying film thickness is high, the silver powder will still appear black, especially when some water-soluble resins or high-hydroxyl content aqueous dispersion resins are selected. Containing a large number of hydrophilic groups, the thickening efficiency of water-based rheology additives is extremely low, which cannot meet the requiremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D7/61C09D7/62C09D7/65C09D5/10
CPCC08K2003/0806C08K2003/0812C08K2201/011C08L2201/08C08L2205/03C09D5/103C09D5/18C09D133/00C08L83/12C08L75/04C08K9/10C08K3/36C08K3/08
Inventor 王凤竹
Owner 西安经建油漆有限责任公司