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Method for manufacturing high-metal-sense aluminum silver paste

A manufacturing method and technology of aluminum silver paste, applied in the direction of dyeing physical treatment, fibrous filler, etc., can solve the problems of poor surface smoothness, wide particle size distribution, irregular particle shape, etc., and achieve high metallic feeling, smooth and clean surface, Effect of narrow particle size distribution

Active Publication Date: 2010-05-19
长沙奥特金属颜料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The particle shape of its products is irregular, the surface smoothness is poor, and the particle size distribution is wide, resulting in poor metal texture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] exist Put 2000kg of 0.5mm steel balls into the horizontal ball mill, add 300kg of 200# solvent oil, D 50 40kg of nitrogen atomized fine spherical aluminum powder of 4.6μm, 1kg of oleic acid, ball milling for 48h, discharge, press filtration; filtrate is returned to the ball milling process; filter cake is diluted, sieved, and the material passing through 500 mesh is classified by wet centrifugal, press filter, The filtrate is returned to the screening process; the filter cake is kneaded and surface-treated, and the package is a high-metallic aluminum-silver paste product.

Embodiment 2

[0017] exist Put 2000kg of 0.8mm steel balls into the horizontal ball mill, add 300kg of 200# solvent oil, 40kg of nitrogen atomized fine spherical aluminum powder with a D50 of 4.6μm, 1kg of oleic acid, ball mill for 38h, discharge, and press filter; the filtrate is returned to the ball mill process The filter cake is diluted and screened, and the material passing through 500 meshes is classified by wet centrifugal, press-filtered, and the filtrate returns to the screening process; the filter cake is kneaded and surface-treated, and the package is a high-metallic aluminum-silver paste product.

Embodiment 3

[0019] exist Put 2000kg of 1.0mm steel balls into the horizontal ball mill, add 300kg of 200# solvent oil, 40kg of nitrogen atomized fine spherical aluminum powder with a D50 of 4.6μm, 1kg of oleic acid, ball mill for 28h, discharge, and press filter; the filtrate is returned to the ball mill process ; The filter cake is diluted and sieved, and the material passing through 500 meshes is classified by wet centrifugal, press-filtered, and the filtrate is returned to the sieving process. The filter cake is surface-treated by kneading, and the package is a high-metallic aluminum-silver paste product.

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PUM

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Abstract

The invention discloses a method for manufacturing high-metal-sense aluminum silver paste, which is realized in a way that: high-carbon steel balls with the diameters of 0.4-1.0 mm are used as the milling medium of the ball mill, fine spherical aluminum powder (d50 is smaller than 5 mum), an organic solvent and lubricant are evenly mixed according to the weight proportion of 40:300:1, ball-milling is carried out in the ball mill for 25-50 hours, pressure filter is carried out on the discharged material, and the filtrate returns to the ball milling process for cycle use; press cakes enter the sieve classification process, the material passing through a 500-mesh sieve enters a wet whirl classification process and then pressure filter is carried out, and the filtrate returns to the sieve process for cycle use; and the press cakes enter the kneading process to be surface-treated, and then is packed to obtain the high-metal-sense aluminum silver paste. In the invention, small steel balls are used for carrying out mild transformation operation on the fine spherical aluminum powder for a long time, oil for the ball mill and oil for sieving are used separately, and the material passing through the 500-mesh sieve is processed in a wet classification way, so that the flaky aluminum pigment particles have the advantages of smooth surface and narrow particle size distribution, thereby ensuring the high metal sense of the aluminum paste.

Description

technical field [0001] The invention relates to a method for preparing aluminum pigment in the field of fine inorganic chemical industry; in particular, it relates to a method for producing aluminum-silver paste by wet method. Background technique [0002] Aluminum pigments are produced from pure aluminum metal. Aluminum pigment particles are actually flakes with pigment properties coated with a fatty acid film on the surface. This form makes them have excellent corrosion resistance and decorative properties, and are widely used. The existing manufacturing methods of aluminum pigments mainly include dry production and wet production; the existing wet production includes (1) mixing aluminum powder with organic solvents, lubricants, etc. in a certain proportion and then grinding in a ball mill; (2) After sieving, press filter to make a filter cake, (3) surface treatment by kneading to become aluminum silver paste; but the existing wet production is to use large steel balls wit...

Claims

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Application Information

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IPC IPC(8): B22F9/04C09C1/64C09C3/04
Inventor 夏风曾孟金周志良罗林姜小平
Owner 长沙奥特金属颜料有限公司
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