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A kind of self-cleaning water-based aluminum silver paste and preparation method thereof

An aluminum-silver paste, self-cleaning technology, applied in chemical instruments and methods, pigment paste, inorganic pigment treatment, etc., can solve the problems of self-cleaning, easy to drop powder, insufficient hydrophilicity of compounds, etc., and achieve good The effect of photocatalytic self-cleaning performance, low production cost and simple preparation

Inactive Publication Date: 2017-11-14
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coating modification is usually to cover a layer of compound film on the surface of aluminum powder. Its unique transparency will not damage the gloss performance of aluminum powder, so more research has been done, but the compound used in the coating of the prior art is hydrophilic. Insufficient, easy to drop powder, and cannot be self-cleaning

Method used

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  • A kind of self-cleaning water-based aluminum silver paste and preparation method thereof
  • A kind of self-cleaning water-based aluminum silver paste and preparation method thereof
  • A kind of self-cleaning water-based aluminum silver paste and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A self-cleaning water-based aluminum silver paste, which is coated with TiO on the surface of the aluminum silver paste 2 Thin films, through TiO 2 The photocatalysis of the thin film enables self-cleaning and water solubility.

[0033] The above-mentioned self-cleaning aluminum-silver paste is prepared by a sol-gel method, which specifically includes the following steps:

[0034] (1) 1 part by weight of commercially available oily aluminum-silver paste is mixed with 1.6 parts by weight of acetone, and separated after a certain period of time to obtain the solid aluminum-silver paste for use;

[0035] (2) Mix titanate coupling agent bis(dioctyloxypyrophosphate) ethylene titanate with isopropanol to obtain titanate coupling agent bis(dioctyloxypyrophosphate) A mixed solution A with a volume fraction of ethylene titanate of 10%; mixing tetrabutyl titanate with isopropanol to obtain a mixed solution B with a volume fraction of tetrabutyl titanate of 25%;

[0036] (3) Mi...

Embodiment 2

[0042] A method for preparing self-cleaning aluminum-silver paste, the specific steps are as follows:

[0043] (1) 1 weight part of oily aluminum-silver paste is mixed with 2.6 parts by weight of acetone, and the solid mixture is separated from the solvent after a certain period of time;

[0044](2) Mix titanate coupling agent bis(dioctyloxypyrophosphate) ethylene titanate with isopropanol to obtain titanate coupling agent bis(dioctyloxypyrophosphate) A mixed solution A with a mass fraction of ethylene titanate of 10%; mixing tetrabutyl titanate with isopropanol to obtain a mixed solution B with a mass fraction of tetrabutyl titanate of 25%;

[0045] (3) Mix the acetone-treated aluminum silver paste with 8 parts by weight of isopropanol, 1 part by weight of mixed solution A and 0.1 part by weight of water, react at 60 ° C, and separate the solid mixture after a period of time stand-by;

[0046] (4) Mix the solid mixture obtained in step (3) with 9 parts by weight of isopropa...

Embodiment 3

[0049] A method for preparing self-cleaning aluminum-silver paste, the specific steps are as follows:

[0050] (1) 1 part by weight of oily aluminum silver paste is mixed with 1.5 parts by weight of acetone, and the solid mixture is separated from the solvent after a certain period of time;

[0051] (2) Mix titanate coupling agent isopropyl tris (dioctyl pyrophosphate acyloxy) titanate with isopropanol to obtain titanate coupling agent isopropyl tris (dioctyl pyrophosphate) A mixed solution A with a mass fraction of acyloxy) titanate of 10%; mixing tetrabutyl titanate with isopropanol to obtain a mixed solution B with a mass fraction of tetrabutyl titanate of 25%;

[0052] (3) Mix the acetone-treated aluminum silver paste with 9 parts by weight of isopropanol, 1 part by weight of mixed solution A and 0.1 part by weight of water, react at 60°C, and separate the solid mixture after a period of time stand-by;;

[0053] (4) Mix the solid mixture obtained in step (3) with 9 parts...

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Abstract

The invention relates to self-cleaning aqueous aluminum paste and a preparation method thereof. The aqueous aluminum paste is prepared by coating the surface of oily aluminum paste with a TiO2 film. Self-cleaning and water solubility are realized under the photocatalysis action of the TiO2 film. The preparation method of the aqueous aluminum paste comprises the following steps: firstly, washing commercially-available oily aluminum paste with an organic solvent to remove residual organic matters on the surface; secondly, pre-treating the oily aluminum paste by using a titanate coupling agent to form covalent bond connection on the surface of the oily aluminum paste; dropwise adding tetrabutyl titanate to form a film on the surface of the aluminum paste through titanium dioxide hydrolyzed by the tetrabutyl titanate in order to finally prepare the aqueous aluminum paste. Compared with the prior art, the aqueous aluminum paste prepared by the method does not influence metal luster of aluminum sheets, and has high photocatalysis self-cleaning performance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a TiO2 with self-cleaning function 2 Coated water-based aluminum-silver paste and a preparation method thereof. Background technique [0002] Aluminum silver paste is an indispensable metal pigment in production and life. It is a paste-like aluminum pigment made of ultra-fine flake-shaped or silver-dollar-shaped aluminum particles through special processing. Aluminum silver paste has good adhesion, hiding power and reflection ability, and also has unique color flop effect and suspension characteristics, making it the most researched and most widely used metallic pigment. [0003] With the proposal of an environment-friendly society, coatings are gradually developing towards water-based and self-cleaning. Traditional oily aluminum silver paste is not easy to disperse in water-based coatings due to the presence of a large amount of solvent oil, and cannot adapt to water-based co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/62C09C1/64C09C3/06C09C3/08C09D17/00
CPCC09C1/62C09C1/64C09C3/006C09C3/06C09C3/08C09D17/00
Inventor 周治国王丹利
Owner SHANGHAI NORMAL UNIVERSITY
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