CN110396307A - A kind of aluminum paste pigment preparation method - Google Patents
A kind of aluminum paste pigment preparation method Download PDFInfo
- Publication number
- CN110396307A CN110396307A CN201910536753.7A CN201910536753A CN110396307A CN 110396307 A CN110396307 A CN 110396307A CN 201910536753 A CN201910536753 A CN 201910536753A CN 110396307 A CN110396307 A CN 110396307A
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- preparation
- aluminium flake
- aluminum paste
- sio
- paste pigment
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/62—Metallic pigments or fillers
- C09C1/64—Aluminium
- C09C1/642—Aluminium treated with inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
- C09C3/063—Coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D17/00—Pigment pastes, e.g. for mixing in paints
- C09D17/004—Pigment pastes, e.g. for mixing in paints containing an inorganic pigment
- C09D17/006—Metal
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
Abstract
The present invention relates to metallic pigments technical fields, and in particular to a kind of aluminum paste pigment preparation method, comprising the following steps: one, the preparation of aluminium flake；Two, SiO2The preparation of colloidal sol；Three, SiO2Coat the preparation of aluminium flake；Four, the preparation of pigment.In aluminum flake surface coated Si O2, SiO2Can be reacted with the hydroxyl of aluminum flake surface, aluminium flake is prevented to be directly exposed to air, reduce aluminium flake and oxygen, moisture react produce oxide after the phenomenon that losing metallic luster.
Description
Technical field
The present invention relates to metallic pigments technical fields, and in particular to a kind of aluminum paste pigment preparation method.
Background technique
Aluminum paste is a kind of pigment with silvery white metallic luster, at present using most and widest metallic effect
One of pigment.The main component of aluminum paste be by special processing process and surface treatment flat aluminium flake, further include solvent and
The ingredients such as auxiliary agent.
At this stage, the bottleneck for influencing the further development and application of aluminum paste is that the resistance to acid and alkali of aluminum paste is poor, as table
Vulnerable to corrosion when coating materials use, paint stability is poor, and metallic luster can be also substantially reduced.
Summary of the invention
For the technical problem of the aluminum paste resistance to acid and alkali difference of the prior art, the present invention provides a kind of aluminum paste pigment preparation
Method, in aluminum flake surface coated Si O2, SiO2It can be reacted with the hydroxyl of aluminum flake surface, aluminium flake is prevented to be directly exposed to air,
Reduce aluminium flake and oxygen, moisture react produce oxide after the phenomenon that losing metallic luster.
The present invention provides a kind of preparation method of aluminum paste pigment, comprising the following steps:
One, the preparation of aluminium flake；
Two, SiO2The preparation of colloidal sol；
Three, SiO2Coat the preparation of aluminium flake；
Four, the preparation of pigment.
Further, the step 1 the following steps are included:
(1) ball aluminum powder and solvent, grinding aid and dispersing agent are added in ball mill and carry out ball milling, Ball-milling Time is
8h-12h；
(2) ball milling product is sent into screening machine and is sieved, screening obtains the aluminium flake for meeting Particle size requirements and not yet ball
The aluminium flake completed is ground, the aluminium flake that not yet ball milling is completed is sent back to ball mill again and carries out ball milling；
(3) filter press is sent into after collecting the aluminium flake for meeting Particle size requirements and carries out filters pressing, makes the liquid being attached on aluminium flake
It is separated with aluminium flake.
Further, the solvent in the step (1) is kerosene, and grinding aid is palmitic acid, and dispersing agent is stearic acid, aluminium
Powder, kerosene, palmitic acid, stearic weight ratio are 50:25:1:1.
Further, the aluminium flake for meeting Particle size requirements that the step (2) obtains is radius-thickness ratio in the flat of 1:16-1:20
Flat aluminium flake.
Further, the step 2 the following steps are included:
(4) taking volume ratio is that 1.5:1-2:1 dehydrated alcohol and deionized water are mixed, and ammonia is added dropwise into ethanol solution
Water adjusts pH value of solution to 9-11；
(5) mixed solution that heating stepses (1) obtain by the way of heating water bath under inert gas protection, and carry out
Mechanical stirring；
(6) to mixed solution and dripping ethyl orthosilicate, continue heating water bath and mechanical stirring after being added dropwise, obtain
SiO2Colloidal sol.
Further, heating temperature is 55 DEG C -65 DEG C in the step (5), mixing speed 60r/min-100r/
Min, mixing time 4h-12h.
Further, ethyl orthosilicate is to be added dropwise by several times in the step (6), and it is 4 times that number, which is added dropwise, ethyl orthosilicate
Volume ratio with dehydrated alcohol is 1:50-1:100, and heating temperature is 55 DEG C -65 DEG C, mixing speed 60r/min-100r/
Min, mixing time 0.5h-2h.
Further, the step 3 the following steps are included:
(7) aluminium flake made from step 1 is added to SiO made from step (6)2In colloidal sol, made using mechanical stirring mode
Aluminium flake and SiO2Colloidal sol mixing；
(8) product for obtaining step (7), which is stood, places 36-48h, obtains SiO2The aluminium flake of cladding.
Further, mixing speed is 60r/min-100r/min, mixing time 0.5h-2h in the step (7).
Further, the step 4 the following steps are included:
(9) by SiO made from step (8)2The aluminium flake of cladding is added in kneader with solvent to be mediated, and aluminum paste face is made
Material.
The beneficial effects of the present invention are,
The present invention provides a kind of aluminum paste pigment preparation method, prepares SiO using sol-gel method2Colloidal sol, and pass through object
Reason mode is by aluminium powder and SiO2Colloidal sol mixing, low for equipment requirements, easy to operate, covered effect is good；
Due to SiO2Film is transparent, SiO2Sol-gel Coated will not influence the glossiness of aluminium-silver size coating in aluminum flake surface；
By carrying out SiO to aluminium flake2Cladding, reduce aluminum paste pigment in aluminium exposure be oxidized in air show
As improving the resistance to acid and alkali of aluminium-silver size coating, guaranteeing the glossiness of aluminum paste pigment, to promote the stabilization of aluminum paste pigment
Property；
The neck such as plastic paint, the japanning of hardware household electrical appliances, bicycle paint can be used for using aluminum paste pigment prepared by the method for the present invention
Domain.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention below will be implemented the present invention
Technical solution in example is clearly and completely described, it is clear that described embodiment is only that present invention a part is implemented
Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creativeness
Every other embodiment obtained, should fall within the scope of the present invention under the premise of labour.
Embodiment 1
A kind of preparation method of aluminum paste pigment, comprising the following steps:
One, the preparation of aluminium flake:
(1) ball aluminum powder and kerosene, palmitic acid and stearic acid are added to ball milling according to the ratio of weight ratio 50:25:1:1
Ball milling, Ball-milling Time 9h are carried out in machine；
(2) ball milling product is sent into screening machine and is sieved, screening obtains the aluminium flake for meeting Particle size requirements and not yet ball
The aluminium flake completed is ground, the aluminium flake that not yet ball milling is completed is sent back to ball mill again and carries out ball milling；
(3) radius-thickness ratio is sent into filter press after the flat aluminium flake of 1:16-1:20 is collected and carries out filters pressing, make to be attached to aluminium flake
On liquid separated with aluminium flake.
Two, SiO2The preparation of colloidal sol:
(4) taking volume ratio is that 1.5:1 dehydrated alcohol and deionized water are mixed, and ammonium hydroxide is added dropwise into ethanol solution, adjusts
PH value of solution is saved to 9；
(5) mixed solution that heating stepses (1) obtain by the way of heating water bath under inert gas protection, and carry out
Mechanical stirring, heating temperature are 55 DEG C, mixing speed 70r/min, mixing time 7h；
(6) it every 30min to 1 ethyl orthosilicate of mixed solution and dripping, is added dropwise 4 times altogether, continues water after being added dropwise
The volume ratio of bath heating and mechanical stirring, ethyl orthosilicate and dehydrated alcohol is 1:60, and heating temperature is 55 DEG C, and mixing speed is
70r/min, mixing time 1h, obtains SiO2Colloidal sol；
Three, SiO2Coat the preparation of aluminium flake:
(7) aluminium flake made from step 1 is added to SiO made from step (6)2In colloidal sol, made using mechanical stirring mode
Aluminium flake and SiO2Colloidal sol mixing, mixing speed 70r/min, mixing time 0.5h；
(8) product for obtaining step (7), which is stood, places 36h, obtains SiO2The aluminium flake of cladding.
Four, the preparation of pigment:
By SiO made from step (8)2The aluminium flake and solvent methylethylketone of cladding are added to according to the ratio of weight ratio 70:30
It is mediated in kneader, aluminum paste pigment is made.
Embodiment 2
A kind of preparation method of aluminum paste pigment, comprising the following steps:
One, the preparation of aluminium flake:
(1) ball aluminum powder and kerosene, palmitic acid and stearic acid are added to ball milling according to the ratio of weight ratio 50:25:1:1
Ball milling, Ball-milling Time 10h are carried out in machine；
(2) ball milling product is sent into screening machine and is sieved, screening obtains the aluminium flake for meeting Particle size requirements and not yet ball
The aluminium flake completed is ground, the aluminium flake that not yet ball milling is completed is sent back to ball mill again and carries out ball milling；
(3) radius-thickness ratio is sent into filter press after the flat aluminium flake of 1:16-1:20 is collected and carries out filters pressing, make to be attached to aluminium flake
On liquid separated with aluminium flake.
Two, SiO2The preparation of colloidal sol:
(4) taking volume ratio is that 1.75:1 dehydrated alcohol and deionized water are mixed, and ammonium hydroxide is added dropwise into ethanol solution, adjusts
PH value of solution is saved to 10；
(5) mixed solution that heating stepses (1) obtain by the way of heating water bath under inert gas protection, and carry out
Mechanical stirring, heating temperature are 60 DEG C, mixing speed 80r/min, mixing time 4h；
(6) it every 1h to 1 ethyl orthosilicate of mixed solution and dripping, is added dropwise 4 times altogether, continues water-bath after being added dropwise and add
The volume ratio of heat and mechanical stirring, ethyl orthosilicate and dehydrated alcohol is 1:75, and heating temperature is 60 DEG C, mixing speed 80r/
Min, mixing time 2h, obtains SiO2Colloidal sol；
Three, SiO2Coat the preparation of aluminium flake:
(7) aluminium flake made from step 1 is added to SiO made from step (6)2In colloidal sol, made using mechanical stirring mode
Aluminium flake and SiO2Colloidal sol mixing, mixing speed 80r/min, mixing time 1h；
(8) product for obtaining step (7), which is stood, places 42h, obtains SiO2The aluminium flake of cladding.
Four, the preparation of pigment:
By SiO made from step (8)2The aluminium flake and solvent methylisobutyl ketone, etoh solvent of cladding are according to weight ratio 65:
The ratio of 20:15, which is added in kneader, mediates, and aluminum paste pigment is made.
Embodiment 3
A kind of preparation method of aluminum paste pigment, comprising the following steps:
One, the preparation of aluminium flake:
(1) ball aluminum powder and kerosene, palmitic acid and stearic acid are added to ball milling according to the ratio of weight ratio 50:25:1:1
Ball milling, Ball-milling Time 12h are carried out in machine；
(2) ball milling product is sent into screening machine and is sieved, screening obtains the aluminium flake for meeting Particle size requirements and not yet ball
The aluminium flake completed is ground, the aluminium flake that not yet ball milling is completed is sent back to ball mill again and carries out ball milling；
(3) radius-thickness ratio is sent into filter press after the flat aluminium flake of 1:16-1:20 is collected and carries out filters pressing, make to be attached to aluminium flake
On liquid separated with aluminium flake.
Two, SiO2The preparation of colloidal sol:
(4) taking volume ratio is that 2:1 dehydrated alcohol and deionized water are mixed, and ammonium hydroxide is added dropwise into ethanol solution, adjusts
PH value of solution is to 11；
(5) mixed solution that heating stepses (1) obtain by the way of heating water bath under inert gas protection, and carry out
Mechanical stirring, heating temperature are 65 DEG C, mixing speed 100r/min, mixing time 10h；
(6) it every 30min to 1 ethyl orthosilicate of mixed solution and dripping, is added dropwise 4 times altogether, continues water after being added dropwise
The volume ratio of bath heating and mechanical stirring, ethyl orthosilicate and dehydrated alcohol is 1:90, and heating temperature is 65 DEG C, and mixing speed is
100r/min, mixing time 0.5h, obtains SiO2Colloidal sol；
Three, SiO2Coat the preparation of aluminium flake:
(7) aluminium flake made from step 1 is added to SiO made from step (6)2In colloidal sol, made using mechanical stirring mode
Aluminium flake and SiO2Colloidal sol mixing, mixing speed 100r/min, mixing time 1.5h；
(8) product for obtaining step (7), which is stood, places 48h, obtains SiO2The aluminium flake of cladding.
Four, the preparation of pigment:
By SiO made from step (8)2The aluminium flake and solvent methylethylketone, solvent butyl acetate of cladding are according to weight ratio 55:
The ratio of 25:20, which is added in kneader, mediates, and aluminum paste pigment is made.
Test example 1
Resistance to acid and alkali test is carried out to aluminum paste pigment made from embodiment 1-3.
Acid resistance test: it takes the sodium carbonate liquor that 50ml concentration is 5% in conical flask, the examination of aluminum paste pigment will be coated with
Sample is put into conical flask, and 40 DEG C of conditions place 6h, and the appearance of a sample state for being coated with aluminum paste pigment made from embodiment 1-3 is kept
Well, without expand, fall off, the variation of crackle and apparent glossiness, no paint film ruckbildung；
Alkali resistance test: it takes the sulfuric acid solution that 50ml concentration is 10% in conical flask, the examination of aluminum paste pigment will be coated with
Sample is put into conical flask, and 20 DEG C of conditions place 6h, and the appearance of a sample state for being coated with aluminum paste pigment made from embodiment 1-3 is kept
Well, without expand, fall off, the variation of crackle and apparent glossiness, no paint film ruckbildung.
Although the present invention is not limited thereto to the present invention have been described in detail by way of preferred embodiment.In
Under the premise of not departing from spirit and substance of the present invention, those of ordinary skill in the art can carry out the embodiment of the present invention each
Kind equivalent modifications or substitutions, and these modifications or substitutions all should in covering scope of the invention/any be familiar with this technology neck
The technical staff in domain in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover of the invention
Within protection scope.Therefore, protection scope of the present invention should be subject to protection scope described in claim.
Claims (10)
1. a kind of preparation method of aluminum paste pigment, which comprises the following steps:
One, the preparation of aluminium flake；
Two, SiO2The preparation of colloidal sol；
Three, SiO2Coat the preparation of aluminium flake；
Four, the preparation of pigment.
2. a kind of preparation method of aluminum paste pigment as described in claim 1, which is characterized in that the step 1 includes following
Step:
(1) ball aluminum powder and solvent, grinding aid and dispersing agent are added in ball mill and carry out ball milling, Ball-milling Time 8h-
12h；
(2) ball milling product is sent into screening machine and is sieved, screening obtains meeting the aluminium flake of Particle size requirements and not yet ball milling is complete
At aluminium flake, by not yet ball milling complete aluminium flake send back to again ball mill carry out ball milling；
(3) filter press is sent into after collecting the aluminium flake for meeting Particle size requirements and carries out filters pressing, makes the liquid being attached on aluminium flake and aluminium
Piece separation.
3. a kind of preparation method of aluminum paste pigment as claimed in claim 2, which is characterized in that molten in the step (1)
Agent is kerosene, and grinding aid is palmitic acid, and dispersing agent is stearic acid, and aluminium powder, kerosene, palmitic acid, stearic weight ratio are 50:
25:1:1。
4. a kind of preparation method of aluminum paste pigment as claimed in claim 2, which is characterized in that the step (2) obtained
The aluminium flake for meeting Particle size requirements is flat aluminium flake of the radius-thickness ratio in 1:16-1:20.
5. a kind of preparation method of aluminum paste pigment as described in claim 1, which is characterized in that the step 2 includes following
Step:
(4) taking volume ratio is that 1.5:1-2:1 dehydrated alcohol and deionized water are mixed, and ammonium hydroxide is added dropwise into ethanol solution, adjusts
PH value of solution is saved to 9-11；
(5) mixed solution that heating stepses (1) obtain by the way of heating water bath under inert gas protection, and carry out machinery
Stirring；
(6) to mixed solution and dripping ethyl orthosilicate, continue heating water bath and mechanical stirring after being added dropwise, obtain SiO2It is molten
Glue.
6. a kind of preparation method of aluminum paste pigment as claimed in claim 5, which is characterized in that heating in the step (5)
Temperature is 55 DEG C -65 DEG C, mixing speed 60r/min-100r/min, mixing time 4h-12h.
7. a kind of preparation method of aluminum paste pigment as claimed in claim 5, which is characterized in that positive silicon in the step (6)
Acetoacetic ester is to be added dropwise by several times, and it is 4 times that number, which is added dropwise, and the volume ratio of ethyl orthosilicate and dehydrated alcohol is 1:50-1:100, heating
Temperature is 55 DEG C -65 DEG C, mixing speed 60r/min-100r/min, mixing time 0.5h-2h.
8. a kind of preparation method of aluminum paste pigment as described in claim 1, which is characterized in that the step 3 includes following
Step:
(7) aluminium flake made from step 1 is added to SiO made from step (6)2In colloidal sol, aluminium flake is made using mechanical stirring mode
And SiO2Colloidal sol mixing；
(8) product for obtaining step (7), which is stood, places 36-48h, obtains SiO2The aluminium flake of cladding.
9. a kind of preparation method of aluminum paste pigment as claimed in claim 8, which is characterized in that stirring in the step (7)
Speed is 60r/min-100r/min, mixing time 0.5h-2h.
10. a kind of preparation method of aluminum paste pigment as described in claim 1, which is characterized in that the step 4 include with
Lower step:
(9) by SiO made from step (8)2The aluminium flake of cladding is added in kneader with solvent to be mediated, and aluminum paste pigment is made.
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| CN201910536753.7A CN110396307A (en) | 2019-06-20 | 2019-06-20 | A kind of aluminum paste pigment preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878178A (en) * | 2019-12-18 | 2020-03-13 | 河南兴安新型建筑材料有限公司 | Nano SiO2Film-coated flaky aluminum pigment and preparation method thereof |
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