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Preparation method for organic/inorganic hybridization cladding aluminum composite particle

A composite particle and coated technology, which is applied in the field of preparation of organic/inorganic hybrid coated aluminum composite particles, can solve the problems of poor resin compatibility, poor weather resistance, and decreased metallic luster, and achieve strong corrosion resistance. Good dispersion performance, excellent metallic luster effect

Inactive Publication Date: 2012-06-27
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic-coated flake aluminum powder has poor weather resistance, while the inorganic-coated flake aluminum powder has defects such as poor compatibility with resins and decreased metallic luster.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Wash the commercially available oily flake aluminum pigment, that is, pigment aluminum powder (average particle size: 13 microns), in methyl ethyl ketone for 3 hours, and vacuum-dry at 105°C with a vacuum degree of 0.09MPa. The hydrogen evolution capacity of the obtained flaky aluminum powder is 183.0 ml (0.5g) -1 , The coating gloss is 90.1Gs.

[0025] (2) In parts by mass, mix 2 parts of flake aluminum powder and 80 parts of absolute ethanol evenly, transfer the mixed slurry to the reactor, and stir for 0.5 h.

[0026] (3) In parts by mass, mix 0.9 parts of vinyltrimethoxyethoxysilane, 1.8 parts of ethyl orthosilicate and 40 parts of absolute ethanol; in addition, mix 7.2 parts of water, 1.5 parts of ethylenediamine and 40 parts of absolute ethanol were mixed evenly.

[0027] (4) Add the two mixed solutions obtained in step (3) into the reactor of step (2) at a constant rate within 1 hour, and then react at a constant temperature of 40°C for 6 hours.

[0028] (...

Embodiment 2

[0030] (1) Wash the commercially available oily flake aluminum pigment (average particle size 10 microns) in cyclohexanone for 3 hours, and dry it in vacuum at 105°C with a vacuum degree of 0.09MPa. The hydrogen evolution capacity of the obtained flake aluminum powder is 170.2 ml (0.5g) -1 , The coating gloss is 90.7Gs.

[0031] (2) In parts by mass, mix 2 parts of flake aluminum powder and 60 parts of absolute ethanol evenly, transfer the mixed slurry to the reactor, and stir for 1 hour.

[0032] (3) In parts by mass, mix 0.8 parts of vinyltrimethoxyethoxysilane, 1.6 parts of ethyl orthosilicate and 40 parts of absolute ethanol; in addition, mix 8 parts of water, 2 parts of ethylenediamine and 40 parts of absolute ethanol were mixed evenly.

[0033] (4) Add the two mixed solutions obtained in step (3) into the reactor of step (2) at a constant rate within 1 h, and then react at a constant temperature of 40° C. for 6 h.

[0034] (5) Suction filter and wash the obtained comp...

Embodiment 3

[0036] (1) Wash the commercially available oily flake aluminum pigment, that is, pigment aluminum powder (average particle size 13 microns) in cyclohexanone for 3 hours, and dry it in vacuum at 105°C with a vacuum degree of 0.09MPa. The hydrogen evolution capacity of the obtained flake aluminum powder is 170.2 ml (0.5g) -1 , The coating gloss is 90.7Gs.

[0037] (2) In parts by mass, mix 2 parts of flake aluminum powder and 50 parts of isopropanol evenly, transfer the mixed slurry to the reactor, and stir for 1 hour.

[0038] (3) In terms of parts by mass, mix 1 part of vinyltrimethoxyethoxysilane, 2 parts of ethyl orthosilicate and 40 parts of isopropanol; in addition, mix 8 parts of water, 3 parts of ammonia water and 40 parts Isopropanol mix well.

[0039] (4) Add the two mixed solutions obtained in step (3) into the reactor of step (2) at a constant rate within 1 h, and then react at a constant temperature of 40°C for 8 h.

[0040] (5) Suction filter and wash the obtain...

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Abstract

The invention discloses a preparation method for an organic / inorganic hybridization cladding aluminum composite particle, which includes mixing leafing aluminum powder and solvent alcohol evenly to be transferred to a reactor to be stirred for a period of time, then adding alcoholic solution containing an organic silicon source and an inorganic silicon source at a constant speed and mixed solution of catalyst, water and alcohol, reacting for a period of time at the constant temperature, and finally filtering, washing and vacuum drying to obtain the organic / inorganic hybridization cladding aluminum composite particle. The organic / inorganic hybridization cladding aluminum composite particle has the following advantages of being capable of scattering in hydrosolvent and the alcohol solvent well and good in compatibility with resin, keeping good metal glossy, and simultaneously having good performance for resisting acid and alkaline corrosion. The organic / inorganic hybridization cladding aluminum composite particle can be used as environment-friendly metallic pigment for water-based paint.

Description

technical field [0001] The invention relates to the technical field of surface treatment of metal pigments, in particular to a method for preparing organic / inorganic hybrid coated aluminum composite particles. Background technique [0002] Flake aluminum powder is one of the important metallic pigments, mainly used in industrial coatings, automotive coatings, printing inks and plastic processing industries. Flaky aluminum powder has the characteristics of good dispersibility, strong adhesion, lifelike silver-like color, good light reflection effect and long-lasting brightness. The silver color prepared from it is a symbol of wealth, power and auspiciousness, and has widely become an indispensable or even irreplaceable color in the fields of high-end color printing packaging, high-end decoration, automobile and motorcycle finish paint, and handicraft decoration. [0003] The chemical properties of aluminum are lively, especially for micron-sized flake aluminum powder, which ...

Claims

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Application Information

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IPC IPC(8): C09C1/64C09C3/12
Inventor 陈振兴朱宏伟盛勇王君胡豫陈栋栋张玮鹏
Owner SUN YAT SEN UNIV
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