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Preparation method of translucent laser plasma optically-variable pigment

A translucent and laser technology, which is applied in camouflage paint, multi-color effect paint, ink, etc., can solve the problems of laser aluminum paste corrosion resistance, greatly reduced discoloration effect, application restrictions, etc., to achieve application range and adaptability improvement, Unique anti-counterfeiting and decorative effects, less serious scattering and diffuse reflection

Inactive Publication Date: 2015-06-10
中山市天键金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the laser aluminum paste has the following disadvantages in practical application: First, aluminum is not resistant to acid and alkali and is easy to oxidize. Once even slight acid and alkali corrosion or oxidation occurs, its discoloration effect will be greatly reduced. Laser aluminum paste requires supporting use The resin has a low acid value, and many applications have special requirements for adhesion and surface finish. At this time, the resin used is often of high acid value, and the laser aluminum paste is not corrosion-resistant, and its application is limited; There are dead corners in the discoloration of different angles. In the dead corners, the color is dim and gray. Especially when spraying, the dead corners show dim and gray spots, which greatly affects the surface decoration effect. The third is that aluminum will oxidize and release hydrogen when it meets water. , can not be in contact with water for a long time, so laser aluminum paste cannot be used in water-based systems

Method used

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  • Preparation method of translucent laser plasma optically-variable pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A PET film with a thickness of 12 μm was placed in a vacuum of 10 -3 In the Pa coating machine, the granular silicon monoxide with a purity of 99.9% is heated and vaporized and deposited on the PET film. The thickness of the silicon oxide layer is controlled at 20nm to form a translucent coating. It is a composite oxide composed of silicon monoxide and silicon dioxide.

[0034] The coating layer of the translucent coating is contacted with the plain surface laser molded plate, and molded at 120 ° C to obtain the plain surface translucent laser coating.

[0035] Use a laser cutting machine (power 150 W, cutting speed 36000mm / min) to cut the plain laser coating into translucent laser flake powder with a diameter of 10 μm.

[0036] Mix the translucent laser flake powder, hard fatty acid, and propylene glycol methyl ether in a mass ratio of 10:1:89, and react at a speed of 300 rpm and 40°C for 30 hours to make the hard fatty acid adsorb on the surface of the translucent l...

Embodiment 2

[0040] Put a PP film with a thickness of 16 μm in a vacuum of 10 -4 In the Pa coating machine, crystalline granular silicon dioxide with a purity of 99.9% is heated and vaporized and deposited on the PP film. The thickness of the silicon dioxide layer is controlled at 50nm to form a translucent coating. oxide) is silicon dioxide.

[0041] Contact the coating layer of the translucent coating with the beam laser molding plate, and mold it at 100°C to obtain the translucent laser coating of the beam.

[0042] A laser cutting machine (power 150 W, cutting speed 36000 mm / min) was used to cut the beam laser coating into translucent laser flake powder with a diameter of 20 μm.

[0043] Mix translucent laser flake powder, hard fatty acid, and ethylene glycol monobutyl ether in a mass ratio of 20:1:79, and react at a speed of 300 rpm and 60°C for 20 hours to make hard fatty acid adsorb on the translucent laser sheet On the surface of the powder, a translucent laser paste pigment is ...

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Abstract

The invention discloses a preparation method of translucent laser plasma optically-variable pigment. The preparation method comprises the following steps: performing vacuum evaporation of a high-purity silicon oxide on a transparent plastic film to form a translucent polysilicon oxide coating; pressing a laser moulded plate on the coating at high temperature to obtain a translucent laser coating; crushing the translucent laser coating by a laser cutting technology; mixing the obtained laser flake powder with fatty acid and an organic solvent according to a certain proportion; performing coating modification on the translucent laser flake powder at certain temperature; and finally, adding a little anti-settling agent to obtain the translucent laser plasma optically-variable pigment. The paint or ink prepared from the translucent laser plasma optically-variable pigment is translucent under common light without influencing the true color of a base material, and shows a laser colorful effect under direct light without dead angle of color change, thereby keeping the original patterns and colors of the base material and showing unique rainbow color change; and the true color of the base material is not influenced in 'invisibility', and the rainbow pattern is colorful and bright in 'color development', so that the anti-counterfeiting and decoration effects are unique.

Description

technical field [0001] The invention relates to the field of functional materials, in particular to a method for preparing a translucent laser paste optically variable pigment. Background technique [0002] The discoloration of fish scales and jewelry in nature, and the rainbow phenomenon of oil film and soap bubbles are all optical discolorations, which are caused by physical phenomena such as reflection, refraction and interference of light by parallel interfaces of multilayer films. [0003] The world's first advanced optical variable pigment is "Chameleon" (Variocrom) launched by German BASF company in 1999. Its manufacturing process is to use high vacuum evaporation coating or ion sputtering method to combine total reflection layer (core), dielectric layer Substances such as translucent layers are deposited together sequentially to form a multilayer thin film sheet. When the viewing angle changes, incident light undergoes physical phenomena such as reflection, refractio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D5/29C09D5/30C09D11/00C09D11/50
CPCC09D7/65C09D5/29C09D5/30C09D7/62C09D7/69C09D11/00C09D11/50
Inventor 瞿晓岳
Owner 中山市天键金属材料有限公司