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Preparation method of water-based PVD (physical vapor deposition) aluminum pigment

An aluminum pigment, water-based technology, used in fibrous fillers, dyed low-molecular-weight organic compound treatment, dyed high-molecular organic compound treatment, etc. The stability of production is difficult to control, etc., to achieve the effect of excellent density and uniformity, thin coating film, and easy operation.

Active Publication Date: 2013-02-06
HUIZHOU FORYOU OPTICAL TECH
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AI Technical Summary

Problems solved by technology

[0006] Silica coating method is the basic principle of the water-based treatment of aluminum pigments at present, but the damage to the surface of aluminum flakes is very serious, so it is only suitable for ordinary low-gloss aluminum powder water-based treatment, not suitable for PVD Waterborne Treatment of Type Aluminum Pigments
[0008] The water-based resin coating method is another traditional method for preparing water-based aluminum pigments. Compared with the silica coating method, this process has relatively little damage to the surface gloss of aluminum powder, but it is difficult to control the stability of production. Moreover, the stability of the product Poor, also not suitable for water-based treatment of PVD aluminum pigments

Method used

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  • Preparation method of water-based PVD (physical vapor deposition) aluminum pigment
  • Preparation method of water-based PVD (physical vapor deposition) aluminum pigment

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preparation example Construction

[0023] figure 1 It is a flowchart of the preparation method of the water-based PVD aluminum pigment of the present invention. like figure 1 As shown, the preparation method of the water-based PVD aluminum pigment of the present invention comprises steps S1, S2, S3, S4 and S5, wherein,

[0024] Step S1: adding the PVD aluminum pigment into the first alcohol solvent or the first alcohol ether solvent to prepare a PVD aluminum pigment slurry with a solid content of 0.1%-10%, wherein the PVD aluminum pigment in the PVD aluminum pigment slurry The particle size is 5-15 microns;

[0025] Step S2: Dissolving the passivator and the corrosion inhibitor in the second alcohol solution or the second alcohol ether solvent to prepare the auxiliary agent solution, wherein the passivator, the corrosion inhibitor and the second alcohol solution or the second alcohol The weight ratio of ether solvent is 1-5:1-5:40-100;

[0026] Step S3: adding the auxiliary agent solution into the PVD alumi...

Embodiment 1

[0041] 1. Take 100 grams of nano-aluminum pigments with an average particle size of 98.52 microns, a solid content of 14%, and an isopropanol content of 86%, dilute it to 2000 grams with ethylene glycol butyl ether, stir evenly, and make a1 liquid;

[0042] 2. Use an ultrasonic pulverizer to pulverize the a1 liquid above to a particle size of 10.5 microns to produce a b1 liquid. The conditions for the ultrasonic pulverization are as follows: the frequency is 1000HZ, the time is 3 seconds, and the interval is 5 seconds;

[0043] 3. Add 2.5 grams of phosphoramide (passivator) and 2.5 grams of dimer fatty acid (corrosion inhibitor) into 90 grams of ethylene glycol butyl ether to disperse to make c1 solution;

[0044] 4. Add 5 grams of liquid c1 to liquid b1, and stir for 30 minutes under a paddle stirrer at a speed of 500r / min to make liquid d1;

[0045] 5. Centrifuge the d1 liquid with a centrifuge, discard the supernatant liquid, add ethylene glycol butyl ether to the lower pig...

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Abstract

The invention provides a preparation method of water-based PVD (physical vapor deposition) aluminum pigment. The preparation method includes steps of adding PVD aluminum pigment into a first alcohol solvent or a first alcohol ether solvent to prepare PVD aluminum pigment slurry; dissolving passivator and corrosion inhabitor into a second alcohol solvent or a second alcohol ether solvent according to the weight ratio of (1-5): (1-5) : (40-100) so as to prepare additive solution; adding the additive solution into the PVD aluminum pigment slurry according to the weight ratio of 1:(5-30) to obtain water-based PVD aluminum pigment stock solution; subjecting the water-based PVD aluminum pigment stock solution to solid and liquid separation and obtaining solid-phase substance; and finally adding the solid-phase substance into a third alcohol ether solvent to obtain the water-based PVD aluminum pigment. The PVD aluminum pigment prepared by the method has good dispersibility in water while keeping good mirror finish and gloss.

Description

technical field [0001] The invention relates to the field of aluminum pigments, in particular to a preparation method of water-based PVD aluminum pigments. Background technique [0002] Aluminum pigment has excellent gloss and hue, and is one of the important metallic pigments. With the development of science and technology, the aluminum pigments prepared by the traditional ball milling method are difficult to meet people's demand for high-brightness aluminum pigments due to their small diameter-thickness ratio, wide particle size distribution, and low brightness. Therefore, high-brightness aluminum pigments were proposed in the 1990s. The manufacturing method of the pigment, that is, the PVD (Physical Vapor Deposition) method to prepare aluminum pigments. [0003] After more than 20 years of development, the technology of oily PVD aluminum pigments has been relatively mature, but the special flake structure of PVD aluminum pigments has a strong tendency to aggregate. In th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/64C09C3/08C09C3/10
Inventor 彭金球陈章荣何文博
Owner HUIZHOU FORYOU OPTICAL TECH
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