CN104479425A - Preparation method of water-based aluminum pigment - Google Patents
Preparation method of water-based aluminum pigment Download PDFInfo
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- CN104479425A CN104479425A CN201410786168.XA CN201410786168A CN104479425A CN 104479425 A CN104479425 A CN 104479425A CN 201410786168 A CN201410786168 A CN 201410786168A CN 104479425 A CN104479425 A CN 104479425A
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Abstract
The invention discloses a preparation method of a water-based aluminum pigment. The preparation method comprises the following steps: (1) raw material pretreatment, (2) surface coating, (3) separation and purification, and (4) in-situ polymerization. The preparation method of the water-based aluminum pigment is simple and convenient to operate and easy to implement; a uniform and compact core/shell protective layer is formed on the surface of flake aluminum powder by virtue of surface coating and in-situ polymerization, and therefore, the water resistance, the oxidation resistance and the corrosion resistance of the aluminum pigment can be effectively improved; the prepared aluminum pigment is high in stability, good in glossiness and wide in application prospect.
Description
Technical field
The present invention relates to pigment art, particularly relate to a kind of preparation method of based aluminum pigment.
Background technology
Flaky aluminum pigment has good dispersity, strong adhesion, color and luster is true to nature, luminous reflectance is effective and the advantage such as light durable, being widely used in high-grade color printing packaging, high-grade decoration, automobile and the field such as topcoat for motorbike, artwork modification, is a kind of important metallic pigment.But because the chemical property of aluminium is active, aluminium powder specific surface area in flaky aluminum pigment is large, be exposed to the as easy as rolling off a log reaction such as with the acid in environment, alkali, water, oxygen of outer surface aluminum atoms, and flake-like aluminium powder pigment is gone bad, lose the characteristics such as original metalluster, its color can become canescence from the metallic color become clear gradually, has had a strong impact on the performance of product.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of preparation method of based aluminum pigment, can form fine and close core/shell protective layer on the surface of aluminium, solves the above-mentioned shortcoming that existing water-based flaky aluminum pigment exists.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the preparation method providing a kind of based aluminum pigment, comprises the steps:
(1) raw materials pretreatment: become particle diameter to be the flake aluminum of 10 ~ 30 μm through ball mill grinding aluminium powder, then by gained aluminium powder with using acetone, deionized water supersound washing 5 ~ 8 times successively, suction filtration, vacuum-drying are for subsequent use;
(2) Surface coating: in mass fraction, the obtained aluminium powder of 50 ~ 60 parts of steps (1) and 80 ~ 100 parts of organic solvents are added in heated and stirred reactor, at room temperature be uniformly mixed, then temperature in the kettle is increased to 70 ~ 80 DEG C, again to the mixed solution at the uniform velocity dripping 30 ~ 40 parts of ammoniacal liquor, butyl acrylate, methacrylic acid, benzoyl peroxide and tetraethyl silicate in it under agitation condition, dropwise rear insulated and stirred 3 ~ 4h and make to react completely;
(3) separating-purifying: by mixture suction filtration reacted in step (2), washes clean, and then vacuum-drying;
(4) in-situ polymerization: in mass fraction; to 90 ~ 100 DEG C, add the dried Surface coating aluminium powder of purifying 10 ~ 20 parts, ethylacrylic acid 1 ~ 2 part, azo-initiator 2 ~ 3 parts, dispersion agent 5 ~ 10 parts and deionized water 30 ~ 50 parts in step (3) in the stirred autoclave of nitrogen protection; 1 ~ 2h is uniformly mixed with the rotating speed of 200 ~ 280 turns/min; continuing stirring 1 ~ 2h after stopping heating, suction filtration, washing, vacuum-drying obtain described based aluminum pigment.
In a preferred embodiment of the present invention, described vacuum drying condition is: vacuum tightness 0.1 ~ 0.3MPa, temperature 70 ~ 80 DEG C, time 4 ~ 6h.
In a preferred embodiment of the present invention, described organic solvent is dehydrated alcohol, acetone or ether.
In a preferred embodiment of the present invention, in described step (2), the blending ratio of described ammoniacal liquor, butyl acrylate, methacrylic acid, benzoyl peroxide and tetraethyl silicate is 3:1:0.5:1:2.
In a preferred embodiment of the present invention, in described step (2), the drop rate of described ammoniacal liquor, butyl acrylate, methacrylic acid, benzoyl peroxide and tetraethyl silicate mixed solution is 2/s.
The invention has the beneficial effects as follows: the preparation method of a kind of based aluminum pigment of the present invention; easy and simple to handle; easy realization; core/shell the protective layer of one deck even compact is formed on flake aluminum surface by Surface coating and in-situ polymerization; effectively can improve the water tolerance of aluminium pigment, oxidation-resistance and erosion resistance; prepared aluminium pigment stability is strong, glossiness good, has a extensive future.
Embodiment
Below preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
The embodiment of the present invention comprises:
Embodiment 1
(1) raw materials pretreatment: become particle diameter to be the flake aluminum of 10 ~ 30 μm through ball mill grinding aluminium powder, then by gained aluminium powder with using acetone and deionized water supersound washing 5 ~ 8 times successively, suction filtration, after washes clean, be 0.1MPa in vacuum tightness, temperature is that under the condition of 80 DEG C, dry 4h is for subsequent use;
(2) Surface coating: in mass fraction, the obtained aluminium powder of 50 parts of steps (1) and 80 parts of dehydrated alcohols, acetone or ether are added in heated and stirred reactor, at room temperature be uniformly mixed, then temperature in the kettle is increased to 70 DEG C, at the uniform velocity drip 30 parts of mixed volumes than the mixed solution for the ammoniacal liquor of 3:1:0.5:1:2, butyl acrylate, methacrylic acid, benzoyl peroxide and tetraethyl silicate in it with the speed of 2/s again under agitation condition, dropwising rear insulated and stirred 3h makes to react completely;
(3) separating-purifying: by mixture suction filtration reacted in step (2), washes clean, and then vacuum-drying under the condition described in step (1);
(4) in-situ polymerization: in mass fraction; to 90 DEG C, add the dried Surface coating aluminium powder of purifying 10 parts, ethylacrylic acid 1 part, azo-initiator 2 parts, Virahol dispersion agent 5 parts and deionized water 30 parts in step (3) in the stirred autoclave of nitrogen protection; 2h is uniformly mixed with the rotating speed of 200 turns/min; stir 1h in continuation after stopping heating, suction filtration, washing, vacuum-drying obtain described based aluminum pigment.
Embodiment 2
(1) raw materials pretreatment: become particle diameter to be the flake aluminum of 10 ~ 30 μm through ball mill grinding aluminium powder, then by gained aluminium powder with using acetone and deionized water supersound washing 5 ~ 8 times successively, suction filtration, after washes clean, be 0.3MPa in vacuum tightness, temperature is that under the condition of 70 DEG C, dry 6h is for subsequent use;
(2) Surface coating: in mass fraction, the obtained aluminium powder of 60 parts of steps (1) and 100 parts of dehydrated alcohols, acetone or ether are added in heated and stirred reactor, at room temperature be uniformly mixed, then temperature in the kettle is increased to 80 DEG C, at the uniform velocity drip 40 parts of mixed volumes than the mixed solution for the ammoniacal liquor of 3:1:0.5:1:2, butyl acrylate, methacrylic acid, benzoyl peroxide and tetraethyl silicate in it with the speed of 2/s again under agitation condition, dropwising rear insulated and stirred 4h makes to react completely;
(3) separating-purifying: by mixture suction filtration reacted in step (2), washes clean, and then vacuum-drying under the condition described in step (1);
(4) in-situ polymerization: in mass fraction; to 100 DEG C, add the dried Surface coating aluminium powder of purifying 20 parts, ethylacrylic acid 2 parts, azo-initiator 3 parts, dispersion agent 10 parts and deionized water 50 parts in step (3) in the stirred autoclave of nitrogen protection; 1h is uniformly mixed with the rotating speed of 280 turns/min; stir 2h in continuation after stopping heating, suction filtration, washing, vacuum-drying obtain described based aluminum pigment.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. a preparation method for based aluminum pigment, is characterized in that, comprises the steps:
(1) raw materials pretreatment: become particle diameter to be the flake aluminum of 10 ~ 30 μm through ball mill grinding aluminium powder, then by gained aluminium powder with using acetone, deionized water supersound washing 5 ~ 8 times successively, suction filtration, vacuum-drying are for subsequent use;
(2) Surface coating: in mass fraction, the obtained aluminium powder of 50 ~ 60 parts of steps (1) and 80 ~ 100 parts of organic solvents are added in heated and stirred reactor, at room temperature be uniformly mixed, then temperature in the kettle is increased to 70 ~ 80 DEG C, again to the mixed solution at the uniform velocity dripping 30 ~ 40 parts of ammoniacal liquor, butyl acrylate, methacrylic acid, benzoyl peroxide and tetraethyl silicate in it under agitation condition, dropwise rear insulated and stirred 3 ~ 4h and make to react completely;
(3) separating-purifying: by mixture suction filtration reacted in step (2), washes clean, and then vacuum-drying;
(4) in-situ polymerization: in mass fraction; to 90 ~ 100 DEG C, add the dried Surface coating aluminium powder of purifying 10 ~ 20 parts, ethylacrylic acid 1 ~ 2 part, azo-initiator 2 ~ 3 parts, dispersion agent 5 ~ 10 parts and deionized water 30 ~ 50 parts in step (3) in the stirred autoclave of nitrogen protection; 1 ~ 2h is uniformly mixed with the rotating speed of 200 ~ 280 turns/min; continuing stirring 1 ~ 2h after stopping heating, suction filtration, washing, vacuum-drying obtain described based aluminum pigment.
2. the preparation method of based aluminum pigment according to claim 1, is characterized in that, described vacuum drying condition is: vacuum tightness 0.1 ~ 0.3MPa, temperature 70 ~ 80 DEG C, time 4 ~ 6h.
3. the preparation method of based aluminum pigment according to claim 1, is characterized in that, described organic solvent is dehydrated alcohol, acetone or ether.
4. the preparation method of based aluminum pigment according to claim 1, is characterized in that, in described step (2), the blending ratio of described ammoniacal liquor, butyl acrylate, methacrylic acid, benzoyl peroxide and tetraethyl silicate is 3:1:0.5:1:2.
5. the preparation method of based aluminum pigment according to claim 1, is characterized in that, in described step (2), the drop rate of described ammoniacal liquor, butyl acrylate, methacrylic acid, benzoyl peroxide and tetraethyl silicate mixed solution is 2/s.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104817856A (en) * | 2015-05-18 | 2015-08-05 | 常德金鹏印务有限公司 | Water-based aluminum powder pigment, and preparation method and application thereof |
| CN105348869A (en) * | 2015-12-15 | 2016-02-24 | 常熟市环虹化工颜料厂 | Preparing method of nano SiO2 cladded aluminum pigment |
| CN105482514A (en) * | 2015-12-15 | 2016-04-13 | 常熟市环虹化工颜料厂 | Method for preparing corrosion inhibition waterborne aluminum pigment |
| CN106189383A (en) * | 2016-07-27 | 2016-12-07 | 合肥旭阳铝颜料有限公司 | A kind of ageing-resistant nano silicon coating modification thin slice aluminium powder pigment and preparation method thereof |
| CN106221301A (en) * | 2016-07-27 | 2016-12-14 | 合肥旭阳铝颜料有限公司 | A kind of cyanuric acid lanthanum modified manometer silicon dioxide coating modification thin slice aluminium powder pigment and preparation method thereof |
| CN106221308A (en) * | 2016-07-27 | 2016-12-14 | 合肥旭阳铝颜料有限公司 | The modified dual cladding based aluminum pigment of a kind of wear-resisting toughening type inhibition |
| CN106221310A (en) * | 2016-07-27 | 2016-12-14 | 合肥旭阳铝颜料有限公司 | The modified thermally-stabilised based aluminum pigment of dual cladding of a kind of inhibition |
| CN106280583A (en) * | 2016-07-27 | 2017-01-04 | 合肥旭阳铝颜料有限公司 | A kind of benzimidazole modified manometer silicon dioxide coating modification thin slice aluminium powder pigment and preparation method thereof |
| CN111100484A (en) * | 2019-12-27 | 2020-05-05 | 河南兴安新型建筑材料有限公司 | Nano SiO2Preparation method of coated flaky pigment Al powder |
| CN113025081A (en) * | 2021-03-09 | 2021-06-25 | 武汉双虎涂料有限公司 | Coated aluminum powder and preparation method thereof, and silver-white aluminum paint and preparation method thereof |
| CN115260797A (en) * | 2022-08-12 | 2022-11-01 | 山东大学 | Preparation method of colored aluminum powder pigment |
| CN115819997A (en) * | 2022-12-13 | 2023-03-21 | 汕头市龙骅材料技术有限公司 | Preparation method of aluminum-based pearlescent pigment |
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| JP2009275096A (en) * | 2008-05-14 | 2009-11-26 | Asahi Kasei Chemicals Corp | Method for manufacturing aluminum pigment composition, aluminum pigment composition obtained by it, and paint composition containing it |
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| CN103319917A (en) * | 2013-06-18 | 2013-09-25 | 合肥旭阳铝颜料有限公司 | Preparation method of magnetic aluminum pigment |
| CN103319916A (en) * | 2013-06-19 | 2013-09-25 | 中南大学 | Preparation method of inorganic-organic double-layer coated type aluminum paste |
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| JP2009275096A (en) * | 2008-05-14 | 2009-11-26 | Asahi Kasei Chemicals Corp | Method for manufacturing aluminum pigment composition, aluminum pigment composition obtained by it, and paint composition containing it |
| CN101580653A (en) * | 2009-06-10 | 2009-11-18 | 华南理工大学 | Organic-inorganic hybrid nanometer film coating aluminum powder pigment and preparation method and application thereof |
| CN102127322A (en) * | 2010-12-24 | 2011-07-20 | 董前年 | Preparation method of double-layer coated water-based aluminum pigment |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104817856A (en) * | 2015-05-18 | 2015-08-05 | 常德金鹏印务有限公司 | Water-based aluminum powder pigment, and preparation method and application thereof |
| CN105348869A (en) * | 2015-12-15 | 2016-02-24 | 常熟市环虹化工颜料厂 | Preparing method of nano SiO2 cladded aluminum pigment |
| CN105482514A (en) * | 2015-12-15 | 2016-04-13 | 常熟市环虹化工颜料厂 | Method for preparing corrosion inhibition waterborne aluminum pigment |
| CN106221310A (en) * | 2016-07-27 | 2016-12-14 | 合肥旭阳铝颜料有限公司 | The modified thermally-stabilised based aluminum pigment of dual cladding of a kind of inhibition |
| CN106221301A (en) * | 2016-07-27 | 2016-12-14 | 合肥旭阳铝颜料有限公司 | A kind of cyanuric acid lanthanum modified manometer silicon dioxide coating modification thin slice aluminium powder pigment and preparation method thereof |
| CN106221308A (en) * | 2016-07-27 | 2016-12-14 | 合肥旭阳铝颜料有限公司 | The modified dual cladding based aluminum pigment of a kind of wear-resisting toughening type inhibition |
| CN106189383A (en) * | 2016-07-27 | 2016-12-07 | 合肥旭阳铝颜料有限公司 | A kind of ageing-resistant nano silicon coating modification thin slice aluminium powder pigment and preparation method thereof |
| CN106280583A (en) * | 2016-07-27 | 2017-01-04 | 合肥旭阳铝颜料有限公司 | A kind of benzimidazole modified manometer silicon dioxide coating modification thin slice aluminium powder pigment and preparation method thereof |
| CN111100484A (en) * | 2019-12-27 | 2020-05-05 | 河南兴安新型建筑材料有限公司 | Nano SiO2Preparation method of coated flaky pigment Al powder |
| CN113025081A (en) * | 2021-03-09 | 2021-06-25 | 武汉双虎涂料有限公司 | Coated aluminum powder and preparation method thereof, and silver-white aluminum paint and preparation method thereof |
| CN113025081B (en) * | 2021-03-09 | 2022-04-08 | 武汉双虎涂料有限公司 | Coated aluminum powder and preparation method thereof, and silver-white aluminum paint and preparation method thereof |
| CN115260797A (en) * | 2022-08-12 | 2022-11-01 | 山东大学 | Preparation method of colored aluminum powder pigment |
| CN115260797B (en) * | 2022-08-12 | 2023-09-22 | 山东大学 | Preparation method of color aluminum powder pigment |
| CN115819997A (en) * | 2022-12-13 | 2023-03-21 | 汕头市龙骅材料技术有限公司 | Preparation method of aluminum-based pearlescent pigment |
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Application publication date: 20150401 |