Preparation method of fine-flash type aluminum pigment and aluminum pigment prepared by using same

A technology of aluminum pigment and fine flash, which is applied in the field of metallic pigments, can solve the problems of insufficient whiteness and brightness of fine flash aluminum pigment, and achieve the effect of uniform thickness and simple process

Active Publication Date: 2013-09-18
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 aims to provide a preparation method of fine flash type aluminum pigment and the aluminum pigment prepared therefrom, so as to solve the problem of insufficient shape whiteness and brightness of fine flash type aluminum pigment

Method used

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  • Preparation method of fine-flash type aluminum pigment and aluminum pigment prepared by using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Take D 50 40kg of 5μm atomized spherical aluminum powder, 70kg of 200# solvent oil, 1.8kg of linoleic acid, and 2.1kg of stearic acid were added to a horizontal ball mill, and a steel ball with a diameter of 1.5mm was used as the grinding medium. Grind at 35 rpm for 42 hours and control the temperature of the outer wall of the ball mill not to exceed 60°C.

[0036] (2) Add 1kg of lauric acid, grind for 2 hours and stop.

[0037] (3) After discharging, sieving and filter press, a filter cake with a solid content of 85±2% is obtained, and the organic solvent obtained by filter press is recycled. Then put it into a kneader, add 8.2 kg of 150# solvent oil to dilute to a solid content of 68-72%, and knead to obtain a fine flash type aluminum paste 1.

Embodiment 2

[0039] (1) Take D 50 37kg of 7μm atomized spherical aluminum powder, 75kg of 200# solvent oil, 1.5kg of linoleic acid, and 1.4kg of stearic acid were added to a horizontal ball mill, and a steel ball with a diameter of 2mm was used as the grinding medium, and the grinding process was carried out at 35 rpm / The ball mill was carried out for 36 hours under 10 minutes, and the temperature of the outer wall of the ball mill was controlled to be lower than 60 °C.

[0040] (2) Add 1.2kg of lauric acid, grind for 2 hours and then stop.

[0041] (3) after discharging, sieving, filter press, obtain a filter cake with a solid content of 83 to 87%, place it in a kneader, add 7.8kg of 150# solvent oil and dilute to a solid content of 68 to 72%, knead Obtain fine flash type aluminum paste 2.

Embodiment 3

[0043] (1) Take D 50 46kg of 10μm atomized spherical aluminum powder, 60kg of 200# solvent oil, 2.1kg of linoleic acid, and 2.4kg of stearic acid were added to a horizontal ball mill, and a steel ball with a diameter of 3mm was used as the grinding medium, at 35 rpm / The ball mill was carried out for 44 hours under 10 minutes, and the temperature of the outer wall of the ball mill was controlled to be lower than 60 °C.

[0044] (2) Add 1.2 kg of lauric acid, grind for 1 hour and then stop.

[0045] (3) after discharging, sieving, filter press, obtain a filter cake with a solid content of 83 to 87%, place it in a kneader, add 7.8kg of 150# solvent oil and dilute to a solid content of 68 to 72%, knead Obtain fine flash type aluminum paste 3.

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Abstract

The invention provides a preparation method of fine-flash type aluminum pigment and the aluminum pigment prepared by using the same. The preparation method comprises the following steps: adding an organic solvent, a lubricating agent and aluminum powder with D50 of 3-11 mu m, and carrying out ball milling in a ball mill the rotation speed of which is 20-40 turns / min; adding lauric acid 1-2 hours before ball milling stops; and screening, filtering and then diluting so as to prepare the aluminum pigment with the D50 less than 25 mu m, wherein a grinding medium used in the process of ball milling is a steel ball with a diameter of 0.5-3 mm, the addition amount of the aluminum powder is 35-45 weight parts, the addition amount of the organic solvent is 65-75 weight parts, and the addition amount of lauric acid is 1.5-2 weight parts. By using the method, the shape regularity of the prepared aluminum pigment can be improved so as to improve the whiteness and brightness of the aluminum pigment, L15 of the aluminum pigment can reach 102, and L45 of the aluminum pigment can reach 62; and the thickness of an aluminum sheet in the aluminum pigment reaches 0.5-1.0mu m, and the aluminum sheet has leveling surface, regular shape and even thickness, and process is simple and convenient.

Description

technical field [0001] The present invention relates to the technical field of metallic pigments, in particular, to a method for preparing a fine flash type aluminum pigment, and in particular, to an aluminum pigment prepared by this method. Background technique [0002] According to the particle size of the aluminum flakes in the prepared aluminum paste, the flash type aluminum pigment is divided into coarse flash type aluminum paste and fine flash type aluminum paste. Among them, the fine flash type aluminum paste refers to D 50 (Particle size of 50 wt % of the particles in the substance) < 25 μm aluminium paste. This kind of aluminum paste has strong covering power and metallic luster, and the coating color is white and bright, soft and delicate. The performance of aluminum pigments depends on the particle size, particle size distribution, thickness, surface and edge texture of aluminum flakes in aluminum pigments. [0003] In the prior art, fine-flickering aluminum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/64C09C3/04C09C3/08
Inventor 周明
Owner 长沙族兴新材料股份有限公司
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