A kind of water-based copper-gold powder preparation method and water-based copper-gold powder ink and coating

A copper-gold powder, water-based technology, applied in the field of water-based copper-gold powder ink and paint, water-based copper-gold powder preparation, can solve the problems of dark product color, discoloration of copper-gold powder, poor decorative effect, etc.

Inactive Publication Date: 2019-12-24
苏州博卡金属颜料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of precipitating silica, water, alkali, etc. will erode the surface of copper and gold powder, and the color of the product will become very dark, resulting in a significant deterioration of the decorative effect.
[0006] For this reason, the object of the present invention, besides improving the hydrophilicity problem of copper gold powder, also will solve these copper gold powder discoloration problems in the water-based process simultaneously, prepare a kind of water-based copper-gold powder pigment with excellent decorative performance, be used for water-based paint and ink products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing water-based copper-gold powder, comprising the following steps:

[0029] Step 1: Add 1 part by weight of copper-gold powder to 1 part by weight of propylene glycol methyl ether, heat to 50°C, start stirring to remove free or surface-adsorbed stearic acid in the copper-gold powder, and the stirring speed is 80r / min, the stirring time is 120min, after the stirring, the solid-liquid separation is carried out by pressure filtration or suction filtration to form 1 part of a filter cake, and the solid content of the filter cake is 85%;

[0030] The second step: prepare 1 part by weight of propylene glycol methyl ether, add 0.025 part by weight of a corrosion inhibitor, the corrosion inhibitor is a mixture of fatty alcohol phosphate and thiourea, heat to 45 ° C, add the obtained in the first step. 1 part of the filter cake, stir evenly, the stirring speed is 75r / min, and the stirring time is 150min;

[0031] The third step: to the mixed solution obtain...

Embodiment 2

[0040] A method for preparing water-based copper-gold powder, comprising the following steps:

[0041]Step 1: Add 1 part by weight of copper-gold powder to 3 parts by weight of propylene glycol methyl ether, heat to 60°C, start stirring to remove free or surface-adsorbed stearic acid in the copper-gold powder, and the stirring speed is 200r / min, the stirring time is 150min, after the stirring, the solid-liquid separation is carried out by pressure filtration or suction filtration to form 1 part of a filter cake, and the solid content of the filter cake is 90%;

[0042] The second step: prepare 3 parts by weight of propylene glycol methyl ether, add 0.05 part by weight of a corrosion inhibitor, the corrosion inhibitor is a mixture of fatty alcohol phosphate and thiourea, heat to 60 ° C, add the obtained in the first step. 2 parts of the filter cake, stir evenly, the stirring speed is 30r / min, and the stirring time is 30min;

[0043] The third step: to the mixed solution obtai...

Embodiment 3

[0052] A method for preparing water-based copper-gold powder, comprising the following steps:

[0053] The first step: add 1 part by weight of copper-gold powder to 2 parts by weight of propylene glycol methyl ether, heat it to 40°C, start stirring to remove free or surface-adsorbed stearic acid in the copper-gold powder, and the stirring speed is 30r / min, stirring time 30min, after stirring, carry out solid-liquid separation by pressure filtration or suction filtration to form 1 part of a filter cake, and the solid content of the filter cake is 60%;

[0054] The second step: prepare 2 parts by weight of propylene glycol methyl ether, add 0.01 part by weight of a corrosion inhibitor, the corrosion inhibitor is a mixture of fatty alcohol phosphate and thiourea, heat to 40 ° C, add the obtained in the first step. 2 parts of the filter cake, stir evenly, the stirring speed is 100r / min, and the stirring time is 100min;

[0055] The third step: to the mixed solution obtained in t...

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Abstract

The invention discloses a preparation method of water-based copper-gold powder, water-based copper-gold powder ink and paint, including washing the surface of the copper-gold powder and wrapping a hydrophilic layer and a chemically stable layer on the surface, on the one hand, making the surface of the copper-gold powder hydrophilic, and It ensures that the copper-gold powder is not corroded in the surface treatment project, and avoids the influence of the surface treatment on the color of the copper-gold powder. Ink, paint, etc. have certain acid and alkali resistance characteristics, so as to maintain the color stability of copper gold powder.

Description

technical field [0001] The invention relates to surface treatment of copper-gold powder, in particular to a preparation method of water-based copper-gold powder, and water-based copper-gold powder ink and paint. Background technique [0002] Copper-gold powder is a very fine scaly metal powder made of copper and zinc as the main raw materials, also known as copper-zinc alloy powder, commonly known as gold powder, mainly used in handicrafts, paints, inks, coatings, printing and other industries. [0003] Usually, in the preparation process of copper-gold powder of different colors, two stages of grinding are required, and an annealing process needs to be added in the middle of the two-stage grinding to reduce the hardness of the flake copper-zinc particles to ensure the second Efficiency of stage grinding. In the second stage grinding process, a dry grinding process is used. In this process, a certain amount of saturated fatty acids such as stearic acid need to be added as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02C09C1/62C09C3/06C09C3/08C09C3/10C09C3/12
CPCC09C1/627C09C3/006C09C3/063C09C3/08C09C3/10C09C3/12B22F1/102
Inventor 马卫明
Owner 苏州博卡金属颜料有限公司
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