Antibacterial water-resistant nano silicon dioxide-coated modified thin-sheet aluminum powder pigment, and preparation method thereof

A technology of nano-silica and aluminum pigments, which is applied in the field of aluminum powder pigments, can solve the problems such as the decrease of the brightness of flake aluminum powder pigments, and achieve the effects of improving floatability, compatibility, and water resistance

Inactive Publication Date: 2016-11-30
HEFEI SUNRISE PIGMENTS
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Problems solved by technology

[0006] But with nano-SiO 2 The brightness of coated and modifi...

Method used

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Embodiment Construction

[0015] An antibacterial and water-resistant nano-silica-coated modified flake aluminum powder pigment, which is made of the following raw materials in parts by weight (kg): aluminum pigment 2, TEOS 3, ammonia water 4.5, absolute ethanol amount, distilled water 5, ammonium fluoride Silver 0.4, lanthanum itaconate 0.6, guanidine carbonate 0.2, nano ZnWO 4 0.3, trifluoroethyl acrylate 0.4, cumene peroxide 0.03.

[0016] The preparation method of the described antibacterial and water-resistant nano silicon dioxide coated modified flake aluminum powder pigment comprises the following steps:

[0017] (1) Mix silver ammonium fluoride, lanthanum itaconate, and guanidine carbonate, heat to 60°C, grind evenly, and mix with nano ZnWO after cooling 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;

[0...

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Abstract

The invention discloses an antibacterial water-resistant nano silicon dioxide-coated modified thin-sheet aluminum powder pigment. The antibacterial water-resistant nano silicon dioxide-coated modified thin-sheet aluminum powder pigment is prepared from, by weight, 2 to 2.3 parts of an aluminum pigment, 3 to 3.5 parts of TEOS, 4.5 to 5 parts of ammonium hydroxide, an appropriate amount of absolute ethyl alcohol, 5 to 5.5 parts of distilled water, 0.4 to 0.5 part of diammine silver fluoride, 0.6 to 0.8 part of lanthanum itaconic acid, 0.2 to 0.3 part of guanidine carbonate, 0.3 to 0.4 part of nano ZnWO4, 0.4 to 0.5 part of trifluoroethyl acrylate, and 0.03 to 0.04 part of dicumyl peroxide. According to a preparation method, diammine silver fluoride, lanthanum itaconic acid, and guanidine carbonate are subjected to mixing modification, and the surface of diammine silver fluoride is grafted with lanthanum itaconic acid, so that the compatibility of diammine silver fluoride with aluminum powder coating is increased, water resistance of aluminum powder is improved, corrosion resistance is improved, the antibacterial water-resistant nano silicon dioxide-coated modified thin-sheet aluminum powder pigment is provided with excellent antibacterial performance, and heat resistance of the aluminum powder coating is improved by lanthanum itaconic acid.

Description

technical field [0001] The invention relates to the technical field of aluminum powder pigments, in particular to an antibacterial and water-resistant 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...

Claims

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Application Information

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IPC IPC(8): C09C1/64C09C3/06C09C3/08
CPCC09C1/648C09C3/006C09C3/063C09C3/08
Inventor 董前年李国旺刘亳生陈赛阳朱双单
Owner HEFEI SUNRISE PIGMENTS
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