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Spraying-free colored aluminum pigment and preparation method thereof

A spray-free, aluminum pigment technology, applied in the chemical industry, can solve the problems of surface brightness and color distribution unevenness, dispersibility, poor fluidity, and discounted metallic sensory effects, etc., to achieve excellent and excellent metallic sensory Metallic luster effect, colorful surface effect

Inactive Publication Date: 2020-06-02
广东麒麟精工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the aluminum powder contained in the aluminum pigment is a particle of a fine flaky structure, the thickness is usually 0.5-1.2 μm, and the aspect ratio is 50-200. Poor performance and other reasons will lead to uneven brightness and color distribution on the surface of the product, as well as obvious flow marks and weld lines, which will greatly reduce the metal sensory effect, which greatly affects the application of aluminum pigments in spray-free coating. Process application

Method used

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  • Spraying-free colored aluminum pigment and preparation method thereof
  • Spraying-free colored aluminum pigment and preparation method thereof
  • Spraying-free colored aluminum pigment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Adopt following preparation method to prepare according to the spray-free colored aluminum pigment of the present invention:

[0059] (1) Put 57kg of aluminum powder, 15kg of polyhydroxyethyl acrylate, 7.5kg of bisphenol A polycarbonate and 0.7kg of melamine into a rotary internal mixer, at a temperature of 230°C with 20r / Min speed kneading for 20 minutes;

[0060] (2) Add 1.6kg of aziridine and 1.4kg of (3-aminopropyl)trimethoxysilane to the resultant of step (1), and knead at a rate of 12r / min at a temperature of 200°C 30 minutes; and

[0061] (3) Add 10kg of Pigment Blue 15:3 to the product of step (2), and knead at a temperature of 190° C. at a rate of 8 r / min for 20 minutes.

[0062] (4) The product obtained in step (3) is made into a powder with a particle size of 10-50 μm, thereby preparing the spray-free colored aluminum pigment according to the present invention.

Embodiment 2

[0064] Adopt following preparation method to prepare according to the spray-free colored aluminum pigment of the present invention:

[0065] (1) Put 55kg of aluminum powder, 16kg of polyhydroxyethyl acrylate, 7kg of bisphenol A polycarbonate and 0.8kg of melamine into an overturning mixer, at a temperature of 220°C at 22r / min kneading at the speed of 18 minutes;

[0066] (2) Add 1.5 kg of aziridine and 1.5 kg of (3-aminopropyl) trimethoxysilane to the resultant of step (1), and knead at a rate of 13 r / min at a temperature of 190° C. 25 minutes; and

[0067] (3) Add 10 kg of Pigment Blue 15:3 to the product of step (2), and knead at a temperature of 200° C. at a rate of 10 r / min for 17 minutes.

[0068] (4) The product obtained in step (3) is made into a powder with a particle size of 10-50 μm, thereby preparing the spray-free colored aluminum pigment according to the present invention.

Embodiment 3

[0070] Adopt following preparation method to prepare according to the spray-free colored aluminum pigment of the present invention:

[0071] (1) Put 60kg of aluminum powder, 14kg of polyhydroxyethyl acrylate, 8kg of bisphenol A polycarbonate and 0.6kg of melamine into an overturning mixer, at a temperature of 220°C at 17r / min kneading at the speed of 15 minutes;

[0072] (2) Add 1.7kg of aziridine and 1.3kg of (3-aminopropyl)trimethoxysilane to the resultant of step (1), and knead at a rate of 13r / min at a temperature of 200°C 27 minutes; and

[0073] (3) Add 10kg of Pigment Blue 15:3 to the product of step (2), and knead at a temperature of 180° C. at a rate of 9 r / min for 22 minutes.

[0074] (4) The product obtained in step (3) is made into a powder with a particle size of 10-50 μm, thereby preparing the spray-free colored aluminum pigment according to the present invention.

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Abstract

The invention discloses a spraying-free colored aluminum pigment and a preparation method thereof. The spraying-free colored aluminum pigment comprises the following components by weight: 50-65 partsof aluminum powder; 10-20 parts of polyacrylic resin; 5-10 parts of polycarbonate; 7-15 parts of an organic pigment; 1-2 parts of aziridine; 0.5-1 part of melamine; and 1-2 parts of a silane couplingagent. The spraying-free colored aluminum pigment has very excellent dispersity and fluidity when subjected to melt injection molding after being mixed with resin, so that the surface color of an obtained colored resin product is bright and uniform, small in brightness deviation and excellent in metal appearance, and flow marks and weld lines can be avoided. The preparation method of the spraying-free colored aluminum pigment provided by the invention is simple and practical, and low in implementation cost.

Description

technical field [0001] The invention relates to the field of chemical industry, more specifically, to a spray-free colored aluminum pigment and a preparation method thereof. Background technique [0002] Spray-free coating refers to a new type of environmentally friendly process that adds special pearl powder or metallic pigments to specific resins, and then achieves various pearlescent, colorful or metallic appearance effects through direct injection molding. It has high production efficiency, less environmental pollution in the process, low production cost, good visual quality and never peeling paint. It is a trend in the future development of colored plastics. [0003] With the increasing awareness of environmental protection, spray-free materials have received great attention and development due to their low VOC (volatile organic compounds) in the preparation process. Among them, the spray-free material with aluminum pigment added to the resin is the most widely used no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/14C08L69/00C08L91/06C08K13/02C08K3/08C08K5/3492C08K5/3412C08K5/544C08K3/34
CPCC08K2003/0812C08L33/14C08L2205/03C08L69/00C08K13/02C08K3/08C08K5/34922C08K5/3412C08K5/544C08L91/06C08K3/34
Inventor 陈伊宁
Owner 广东麒麟精工科技有限公司
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