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Method for producing flaky aluminum powder effect pigment by using non-solvent method

A technology of effect pigments and non-solvent method, which is applied in the direction of fibrous fillers, inorganic pigment treatment, chemical instruments and methods, etc., which can solve the problems of high production cost, low efficiency of ball milling process, unusability, etc., and achieve the effect of not being easy to break

Active Publication Date: 2017-10-20
HUNAN JINHAO ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, mirror effect pigments and imitation chrome effect pigments, the existing processing technology is realized by PVD method, the production cost is high, limited by the process, it is stripped in the solvent and can only exist in the liquid solvent, the general content is 10% -25%, it is greatly affected by resins and solvents in coatings, and it cannot be used in environmentally friendly powder coatings because it is in liquid slurry
[0004] Due to the low efficiency of the traditional ball milling process, and the processing thickness of flake aluminum powder in the existing technology reaches 120 nanometers, which is the limit of physical processing, and the flake aluminum powder that requires a minimum thickness of less than 60 nanometers and an average thickness of less than 7 microns, In order to paint a mirror-like or electroplating effect, 120 nanometers obviously cannot meet the roughness required by the mirror-like or near-mirror effect.

Method used

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  • Method for producing flaky aluminum powder effect pigment by using non-solvent method
  • Method for producing flaky aluminum powder effect pigment by using non-solvent method
  • Method for producing flaky aluminum powder effect pigment by using non-solvent method

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Use the average particle size D 50 1.5 μm, D 100 99% spherical aluminum powder as raw material, using steel balls and spherical zinc-aluminum alloy powder with an average particle size of 30μm as the ball milling medium, the aluminum powder is ball milled, the diameter of the ball milling medium stainless steel ball is 0.5mm -1.5mm. Wherein relative to the total weight of the ball milling medium, the weight of the steel ball and the zinc-aluminum alloy powder is shown in Table 1 below; then the flaky aluminum powder after the ball milling is separated, and the polishing medium with a diameter of 200mm, a length of 4000mm, and a filling of 40% is used. Polishing machine is polished to it, and using auxiliary agent is stearic acid, polyvinyl alcohol, polyethylene wax compound auxiliary agent, and stearic acid content is 97wt%, and polyvinyl alcohol, polyethylene wax content are 0.5wt% and 2.5wt% respectively %, the amount of additives used is 5% relative to the mass of ...

Embodiment 2

[0045] Use the average particle size D 50 1.5 μm, D 100 99% spherical aluminum powder as raw material, using steel balls and spherical zinc-aluminum alloy powder with an average particle size of 30μm as the ball milling medium, the aluminum powder is ball milled, the diameter of the ball milling medium stainless steel ball is 0.5mm -1.5mm. Wherein relative to the total weight of the ball milling medium, the steel ball weight is 60%, the weight of the zinc-aluminum alloy powder is 40%, and the mass ratio of the spherical aluminum powder and the ball milling medium (steel ball and zinc-aluminum alloy powder) is as shown in the table below; then separate The flake aluminum powder after ball milling is polished with a polishing machine with a diameter of 200mm, a length of 4000mm, and 40% of the polishing medium filled inside. The additives used are stearic acid, polyvinyl alcohol, and polyethylene wax composite additives. The content of stearic acid is 97wt%, the contents of po...

Embodiment 3

[0048] Use the average particle size D 50 1.5 μm, D 100 Aluminum powder 99% is used as raw material, and steel balls and spherical zinc-aluminum alloy powder with an average particle size of 30μm are used as ball milling media to mill the aluminum powder. The diameter of the ball milling medium stainless steel ball is 0.5mm- 1.5mm. Among them, relative to the total weight of the ball milling medium, the steel ball weight is 60%, the weight of the zinc-aluminum alloy powder is 40%, and the zinc-aluminum content ratio in the zinc-aluminum alloy powder is shown in Table 1 below; powder, use diameter 200mm, length 4000mm, the polishing machine that the inside fills 40% polishing medium to polish it, use auxiliary agent to be stearic acid, polyvinyl alcohol, polyethylene wax composite auxiliary agent, stearic acid content 97wt%, The contents of polyvinyl alcohol and polyethylene wax are 0.5wt% and 2.5wt%, respectively, and the amount of additives used is 5% relative to the mass o...

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Abstract

The invention relates to a method for producing flaky aluminum powder effect pigment by using a non-solvent method. The method comprises the following steps: ultrafine spherical aluminum powder is used as raw materials; steel balls and zinc-aluminum alloy powder are used as ball milling mediums; the ball milling is performed on the ultrafine spherical aluminum powder; corresponding to total weight of the ball milling mediums, the weight of the steel balls is 40-80%, the weight of the zinc-aluminum alloy powder is 20-60%, and the particle size of the zinc-aluminum alloy powder is 20-40 microns; and then, flaky aluminum powder after ball milling is separated out for polishing. The zinc-aluminum alloy powder with the particle size of 20-40 microns is introduced as the ball milling mediums; gaps among the ball milling mediums are fully filled, so that the flaky aluminum powder can be processed finer and thinner; and the flaky powder is changed from micro-scale processing to nano-scale processing.

Description

technical field [0001] The invention relates to a method for producing flake aluminum powder effect pigments by a non-solvent method. Background technique [0002] As domestic and international requirements for environmental protection are getting higher and higher, powder coatings and water-based coatings have become the development direction of the coatings market. During the production and use of oil-based and solvent-based coatings, they are withdrawn due to their environmental pollution and serious impact on human health. The market has become inevitable. In recent years, the market demand for powder coatings and water-based coatings has grown rapidly. Silver is one of the most commonly used colors. The market demand for high-quality and special-effect flake aluminum powder is increasing. Especially surface effect pigments and imitation chrome effect pigments. [0003] However, mirror effect pigments and imitation chrome effect pigments, the existing processing technol...

Claims

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Application Information

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IPC IPC(8): B22F9/04B22F1/00C09C1/64C09C3/04
CPCC09C1/64C09C3/041B22F9/04B22F2009/043C01P2004/24B22F1/068B22F1/14
Inventor 李文辉曾翼李武辉
Owner HUNAN JINHAO ALUMINUM IND
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