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Micro-nano powder material and preparation method thereof

A powder material, micro-nano technology, applied in chemical instruments and methods, fibrous fillers, inorganic pigment treatment, etc., can solve problems such as contact, powder darkening, coating corrosion, etc.

Inactive Publication Date: 2017-01-11
SHANGHAI LANGYI FUNCTIONAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the storage and use of polyhedral micro-nano powder materials, since the coating is directly exposed to the air, it is very easy to contact with oxygen or other corrosive gases in the air, resulting in corrosion of the coating and darkening of the powder. Affect the polyhedral pigment's own effect and use effect
At the same time, the existing polyhedral micro-nano powder materials still have shortcomings such as single color, and the scope of application is restricted.

Method used

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  • Micro-nano powder material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0024] Quartz sand with a particle size of 20-40 microns and an aspect ratio of 0.5-0.8 is used as a polyhedral pigment substrate after being washed and dried with an organic solvent. The surface of the quartz sand is coated with a thickness of 20-30nm by vacuum evaporation. aluminum layer. DC magnetron sputtering is adopted, aluminum is used as the target material, oxygen is passed through, and reactive sputtering is carried out, and an aluminum oxide coating with a thickness of 10nm is coated on the outside of the aluminum coating to prevent the aluminum coating from being oxidized and blackened.

[0025] The composite coating silver polyhedron pigment and the single-layer aluminum coating polyhedron pigment were placed together in the same room temperature air environment, and after three months, the L values ​​of the two polyhedron pigments were measured. The measurement results are shown in Table 1:

[0026]

[0027] From the measurement results, the composite coating...

Embodiment 2

[0029] The glass powder with a particle size of 20-40 microns and an aspect ratio of 0.5-0.8 is coated with an aluminum layer with a thickness of 15-30nm on the surface of the glass powder by magnetron sputtering technology, and the outer side of the aluminum layer is coated A layer of silver plating with a thickness of about 10nm is attached. The L value of the silver polyhedral pigment was measured before and after silver plating, and the results showed that the addition of silver plating increased the L value of the powder from 63 to 72, which can effectively improve the brightness of the powder.

Embodiment 3

[0031] Glass powder with a thickness of 30-50 microns and an aspect ratio of 0.6-0.8 is coated with a layer of aluminum coating with a thickness of 15-30nm on the surface of the glass powder by magnetron sputtering technology, and a layer of aluminum coating is coated on the outside of the aluminum layer. Titanium dioxide coating with a thickness of approximately 192nm. A polyhedral metallic pigment with iridescent red interference was obtained.

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Abstract

The invention relates to a polyhedral micro-nano powder material with a composite coating structure, and a preparation method thereof. According to the invention, the composite coating structure is introduced onto polyhedral pigment particles. With the composite coating structure, a coating layer can be effectively prevented from contacting oxygen or corrosive gases, such that storage and application lives can be prolonged. Also, the appearance effect of the polyhedral pigment can be changed through changing the types of the composite coating layer, such that multicolor, brightening and other effects can be provided.

Description

technical field [0001] The invention relates to a micronano powder material and a preparation method thereof, in particular to a polyhedral micronano powder material and a preparation method thereof. Background technique [0002] With the development of society, people have higher and higher requirements on the appearance of products, and special colors with pearlescent and flashing effects are more and more favored by people. The traditional solution for special colors is to use the spraying process, but on the one hand, the spraying process is complicated and the production cost is high; on the other hand, the spraying process is prone to environmental pollution. Therefore, it is more popular at present to replace the traditional spraying scheme by directly adding flake-shaped metal pigments, mica titanium pearlescent pigments and other special color pigments to the high-gloss plastic substrate, and the corresponding prepared resin can usually be called aesthetics resin. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C3/06C09C1/62C09C1/64C09C1/36
Inventor 唐晓峰逯琪董建廷李大铭
Owner SHANGHAI LANGYI FUNCTIONAL MATERIALS
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