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Aluminum flake pigment subjected to coating modification of nano-silicon dioxide modified by nano cerium oxide and preparation method of aluminum flake pigment

A technology of nano-silica and nano-cerium oxide, which is applied in the field of aluminum powder pigments, can solve problems such as the decrease of brightness of flake aluminum powder pigments, and improve brightness and light reflectivity, improve floatability, improve water resistance and compactness Effect

Inactive Publication Date: 2017-01-04
HEFEI SUNRISE PIGMENTS
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AI Technical Summary

Problems solved by technology

[0006] But with nano-SiO 2 The brightness of coated and modified flake aluminum powder pigments decreases, which needs to be improved

Method used

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Embodiment Construction

[0015] A nano-cerium oxide modified nano-silica-coated modified flake aluminum powder pigment is made of the following raw materials in parts by weight (kg): aluminum pigment 2, TEOS 3, ammonia water 4.5, absolute ethanol, distilled water 5, Nano cerium oxide 0.7, nano potassium sodium niobate 0.2, nano ZnWO 4 0.3, trifluoroethyl acrylate 0.4, cumene peroxide 0.03.

[0016] The preparation method of the nano-cerium oxide modified nano-silica coated modified flake aluminum powder pigment comprises the following steps:

[0017] (1) Nano tungsten trioxide, tetrabutyl titanate, nano ZnWO 4 Mix with 30 parts by weight of absolute ethanol, ultrasonically disperse for 5 minutes, then add trifluoroethyl acrylate and cumene peroxide, heat to 40°C, stir and react for 30 minutes, then add TEOS, stir evenly to obtain a mixture;

[0018] (2) Mix the aluminum pigment with 50 parts by weight of absolute ethanol, stir for 1 hour under the protection of nitrogen, and then raise the temperat...

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Abstract

The invention discloses an aluminum flake pigment subjected to coating modification of nano-silicon dioxide modified by nano cerium oxide. The aluminum flake pigment is prepared from, by weight, 2-2.3 parts of aluminum pigment, 3-3.5 parts of TEOS, 4.5-5 parts of ammonium hydroxide, an appropriate quantity of absolute ethyl alcohol, 5-5.5 parts of distilled water, 0.7-0.9 part of nano cerium oxide, 0.2-0.3 part of nano potassium-sodium niobate, 0.3-0.4 part of nano ZnWO4, 0.4-0.5 part of trifluoroethyl acrylate and 0.03-0.04 part of dicumyl peroxide. The aluminum flake pigment has the advantages that heat resistance and compactness of an aluminum flake coating film are improved by the nano cerium oxide and the nano potassium-sodium niobate, transparency of the coating film is improved by the nano cerium oxide, and brightness and light reflectivity of the aluminum flake pigment are improved.

Description

technical field [0001] The invention relates to the technical field of aluminum powder pigments, in particular to a nano-cerium oxide-modified nano-silicon dioxide-coated modified flake aluminum powder pigment and a preparation method thereof. Background technique [0002] Thin flakes (0.1-1 μm thick, 5-50 μm long or wide) metallic aluminum pigments are widely used in automotive coatings, industrial coatings, printing inks and plastic processing due to their special angle-dependent optical effects and metallic luster. [0003] in industry. However, aluminum is an amphoteric active metal, and when exposed to acid-base solutions or O in the air, 2 It is very easy to oxidize and turn black, affecting its metallic luster, and also produces a large amount of H 2 , affecting its storage stability. [0004] To improve the storage stability of aluminum powder and prevent the surface of aluminum powder from being oxidized, the effective method is to modify the surface of aluminu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/64C09C3/06C09C3/08
CPCC01P2006/60C01P2006/90C09C1/646C09C3/006
Inventor 董前年刘亳生李国旺陈赛阳朱双单
Owner HEFEI SUNRISE PIGMENTS
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