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Preparation method of silver dollar-shaped aluminum pigment

A technology of aluminum pigments and silver dollars, applied in the field of metallic pigments, can solve problems such as poor metallic feeling, low gloss, and irregular shape of aluminum pigment particles, and achieve the effect of narrow particle size distribution, smooth and clean surface, and high gloss

Active Publication Date: 2011-04-06
长沙族兴新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention therefore proposes a method for preparing a silver-dollar-shaped aluminum pigment to overcome the defects of irregular shape, low gloss and poor metallic feeling of the aluminum pigment particles obtained by the existing method

Method used

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  • Preparation method of silver dollar-shaped aluminum pigment
  • Preparation method of silver dollar-shaped aluminum pigment
  • Preparation method of silver dollar-shaped aluminum pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put 2000kg of high-carbon steel balls with a diameter of 2mm into the Φ1100×1200 horizontal ball mill, add 300kg of 200# solvent oil (naphtha), D 5080kg of fine spherical aluminum powder atomized by nitrogen gas of 5-6 microns, 3kg of oleic acid, ball milled for 10h, discharged, and press-filtered. The filtrate is returned to the ball milling process, and the filter cake is added to a Φ1100×1200 horizontal ball mill equipped with 1500kg, 2.0mm zirconium balls, 300kg of 200# solvent oil, 1.5kg of oleic acid, and ball milling for 15 hours. Add the filter cake to the Φ1100×1200 horizontal ball mill equipped with 1000kg of 1.5mm glass balls, add 300kg of 200# solvent oil, 1kg of oleic acid, ball mill for 20h, discharge, 500 mesh sieve, press filter, and the filtrate returns to the ball mill process . The filter cake is put into the kneader, and after adding a small amount of antioxidant, a small amount of dispersant and an appropriate amount of solvent at the same time, th...

Embodiment 2

[0032] Put 2000kg of 3mm stainless steel balls into the Φ1100×1200 horizontal ball mill, add 300kg of 200# solvent oil, D 50 80kg of nitrogen atomized fine spherical aluminum powder of 7-8μm, 3kg of stearic acid, ball milled for 8h, discharging, and press filtration. The filtrate is returned to the ball milling process. Add the filter cake to a Φ1100×1200 horizontal ball mill equipped with 1500 kg of 2mm zirconia balls, add 300 kg of 200# solvent oil, 2 kg of stearic acid, and mill for 10 hours. Add 300kg of 200# solvent oil and 2kg of stearic acid to a Φ1100×1200 horizontal ball mill with 1,000kg of 1.5mm glass balls, and mill for 15 hours, discharge, sieve with 500 mesh, press filter, return the filtrate to the ball milling process; add the filter cake In the kneader, after adding a small amount of antioxidant, a small amount of dispersant and an appropriate amount of solvent at the same time, the solid content becomes 70%. After kneading for 1 hour, the packaging is a sil...

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Abstract

The invention provides a preparation method of a silver dollar-shaped aluminum pigment, which is characterized by comprising the step of carrying out three-stage wet-method ball milling on D50 among aluminum powder with the diameter of 5-8 mum, wherein the diameters of milling balls is within 1.0-3.0 mm, milling balls with the density of 7.0-9.0 g / cm<3> is adopted in the first-stage ball milling,milling balls with the density of 5.0-6.9 g / cm<3> is adopted in the second-stage ball milling, and milling balls with the density of 2.0-4.0 g / cm<3> is adopted in the third-stage ball milling. The surfaces of particles in the tablet-shaped aluminum pigment produced with the method are smooth and clean so that the high glossiness, whiteness and metallic feel of an aluminum-silver paste product areensured.

Description

technical field [0001] The invention relates to the field of metal pigments, in particular to a production method of aluminum pigments. Background technique [0002] Aluminum pigments are efficient pigments characterized by their unique metallic luster and their great covering power. Due to the lamellar structure of this effective pigment, it can be oriented parallel to the substrate in the paint medium and produce a metallic effect due to the many individual microscopic mirrors. This metallic effect is very noticeable, especially in wet paint. For full-tone paints, this effect is due to a brightening effect that depends on the angle of observation and / or angle of incidence, also known as "flop". Excellent flop performance is influenced by many properties of the pigment: its orientation, particle size and size distribution, surface texture (roughness) and edge texture all play a role. [0003] A more important feature of metallic coatings or printing inks is their high gl...

Claims

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Application Information

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IPC IPC(8): C09C1/64C09C3/04
Inventor 梁晓斌夏风罗夔
Owner 长沙族兴新材料股份有限公司
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