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
1 Cites 32 Cited by

AI-Extracted Technical Summary

Problems solved by technology

The organic-coated flake aluminum powder has poor weather resistance, while the inorganic-coated fla...
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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.

Application Domain

Pigment treatment with organosilicon compounds

Technology Topic

Aluminum compositesOrganosilicon +10

Examples

  • Experimental program(4)

Example Embodiment

[0023] Example 1
[0024] (1) The commercially available oily flake aluminum pigment, namely pigmented aluminum powder (average particle size: 13 microns), was cleaned in methyl ethyl ketone for 3 hours, vacuum dried at 105°C, and the vacuum degree was 0.09 MPa. The hydrogen evolution amount of the obtained flake aluminum powder is 183.0 ml·(0.5g) -1 , The gloss of the coating is 90.1Gs.
[0025] (2) In terms of parts by mass, mix 2 parts of flake aluminum powder and 80 parts of absolute ethanol uniformly, transfer the mixed slurry to the reactor, and stir for 0.5h.
[0026] (3) In terms of parts by mass, mix 0.9 parts of vinyl trimethoxyethoxy silane, 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 Mix 40 parts of absolute ethanol 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] (5) Suction the obtained composite particle suspension, washing, and then vacuum drying the obtained filter cake, the drying temperature is 105° C., the vacuum degree is 0.09 MPa, and the drying time is 2 hours. The hydrogen evolution amount of the obtained organic/inorganic hybrid coated aluminum composite particles is 0.2 ml·(0.5g) -1 , The gloss of the coating is 89.5Gs.

Example Embodiment

[0029] Example 2
[0030] (1) The commercially available oily flake aluminum pigment, namely the pigment aluminum powder (average particle size of 10 microns), is cleaned in cyclohexanone for 3 hours, vacuum dried at 105°C, and the vacuum degree is 0.09MPa. The hydrogen evolution amount of the obtained flake aluminum powder is 170.2 ml·(0.5g) -1 , The gloss of the coating is 90.7Gs.
[0031] (2) In terms of parts by mass, mix 2 parts of flake aluminum powder and 60 parts of absolute ethanol uniformly, transfer the mixed slurry to the reactor, and stir for 1 hour.
[0032] (3) In terms of parts by mass, mix 0.8 parts of vinyl trimethoxyethoxy silane, 1.6 parts of ethyl orthosilicate and 40 parts of absolute ethanol; in addition, mix 8 parts of water, 2 parts of ethylenediamine and Mix 40 parts of absolute ethanol evenly.
[0033] (4) The two mixed solutions obtained in step (3) are fed into the reactor of step (2) in parallel flow at a constant speed within 1 hour, and then reacted at a constant temperature of 40°C for 6 hours.
[0034] (5) Suction the obtained composite particle suspension, washing, and then vacuum drying the obtained filter cake, the drying temperature is 105° C., the vacuum degree is 0.09 MPa, and the drying time is 2 hours. The hydrogen evolution amount of the obtained organic/inorganic hybrid coated aluminum composite particles is 0.5 ml·(0.5g) -1 , The gloss of the coating is 89Gs.

Example Embodiment

[0035] Example 3
[0036] (1) The commercially available oily flake aluminum pigment, namely the pigment aluminum powder (average particle size of 13 microns), was cleaned in cyclohexanone for 3 hours, vacuum dried at 105°C, and the vacuum degree was 0.09 MPa. The hydrogen evolution amount of the obtained flake aluminum powder is 170.2 ml·(0.5g) -1 , The gloss of the coating is 90.7Gs.
[0037] (2) In terms of parts by mass, mix 2 parts of flake aluminum powder and 50 parts of isopropanol uniformly, transfer the mixed slurry to the reactor and stir for 1 hour.
[0038] (3) In parts by mass, mix 1 part of vinyl trimethoxyethoxy silane, 2 parts of ethyl orthosilicate and 40 parts of isopropanol; in addition, mix 8 parts of water, 3 parts of ammonia and 40 parts Mix isopropanol well.
[0039] (4) Add the two mixed solutions obtained in step (3) into the reactor of step (2) in parallel flow at a constant rate within 1 h, and then react at a constant temperature of 40° C. for 8 h.
[0040] (5) Suction the obtained composite particle suspension, washing, and then vacuum drying the obtained filter cake, the drying temperature is 105° C., the vacuum degree is 0.09 MPa, and the drying time is 2 hours. The hydrogen evolution amount of the obtained organic/inorganic hybrid coated aluminum composite particles is 0.3 ml·(0.5g) -1 , The gloss of the coating is 88.3Gs.
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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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