CN102372933B - Preparation method of environmentally friendly non-floating aluminum paste pigment - Google Patents
Preparation method of environmentally friendly non-floating aluminum paste pigment Download PDFInfo
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- CN102372933B CN102372933B CN201010250272.9A CN201010250272A CN102372933B CN 102372933 B CN102372933 B CN 102372933B CN 201010250272 A CN201010250272 A CN 201010250272A CN 102372933 B CN102372933 B CN 102372933B
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Abstract
The invention which belongs to the field of aluminum paste pigments discloses a preparation method of an environmentally friendly non-floating aluminum paste pigment. Non-floating aluminum paste pigments prepared with the prior art have a defect that the pigments which contain heavy metal substances and polycyclic aromatic hydrocarbons are harmful to human bodies. The preparation method of the invention comprises the following steps: 1, mixing spherical aluminum powder in a solvent according to a weigh ratio of 1:1, placing them in a bowl mill, grinding to prepare platy grains with the rotating speed of the bowl mill of 37rpm and the temperature in the bowl mill of 50-55DEG C; 2, screening: placing the platy grains in a screener to obtain pigment flakes with different grain sizes; 3, press-filtering: placing the pigment flakes in a press filter, and separating out the solvent to obtain a solid filter cake; and 4, adding a solvent and a cosolvent to the solid filter cake, placing them in a kneader, and kneading to prepare the aluminum paste pigment containing 65 wt% of the solid and 35wt% of the solvent. The environmentally friendly non-floating aluminum paste pigment has the advantages of no harm to the human bodies because of the safe use, wide application because the aluminum paste pigment can be used by cooperating with various base materials, durability and good protection effect of a film of the aluminum paste pigment, simple production technology, and low cost.
Description
Technical field
The invention belongs to aluminum paste pigment, specifically the preparation method of the non-floating type aluminum paste pigment of a kind of environmental protection.
Background technology
Aluminum paste pigment is important in Modern Industry Products, indispensable metallic pigment, and main component is snowflake shape aluminum particulate and solvent, is paste.Be characterized in that aluminium flake smooth surface is smooth, size-grade distribution is concentrated, and regular shape, has excellent luminous reflectanc and metalluster, both can singlely in coating, ink, plastics, use, and produces the metal effect of silver color; Also can coordinate other pigment to use, produce the golden metal effect that waits different colours.Aluminum paste pigment can evenly be arranged in parallel to reach between 12 layers, sheet and sheet and by base-material, be sealed again in general protective coating, the erosion to ground such as coating structure maskable ambient atmos, moisture content, light, thereby there is durable provide protection.Paint film has obvious effect, and decorative effect is magnificent attractive in appearance.Be mainly used in car paint, light current plastic paint, metallic paint, marine finish, heat resisting coating, coating etc. for roof.
Aluminum paste pigment is divided into two kinds, floating type and non-floating type.In floating type aluminium-silver slurry, aluminium flake aligns and forms the opaque silver color film of one deck at nearly coating surface, and this opaque character is to make floating type aluminium-silver slurry become important functional raw-material principal element.
Non-floating type aluminium-silver slurry is that aluminium flake evenly distributes abreast in whole paint film, can mix and be applicable to multiple system with multiple pigment, and industrial coating is had to unique effect.The pigment using together with non-floating type aluminium-silver slurry or dyestuff must be all transparent, only in this way just can reach the effect of metallic surface true to nature.Non-floating type aluminium-silver slurry is of a great variety, and from low to high, from coarse to fine, outward appearance also has acidproof series product from white, glittering to more grey, finer and smoother to particle diameter to tinting strength, can reduce the impacts of poor environment on coating such as industrial fume, acid rain.Non-floating type aluminium-silver slurry can extensively adopt polarity and non-polar solvent, as aliphatics or aromatic hydrocarbons, ester class, ketone, alcoholic solvent.
The shortcoming of the non-floating type aluminum paste pigment of prior art is: the heavy metal substance containing in pigment, polycyclic aromatic hydrocarbons material produce injury effect to people's health; Because aluminum paste pigment is widely used, so people's physical effects is extensively existed, this is a long-term insoluble technical problem.
So invent, a kind of production method is simple, cost is low, to the preparation method of human-body safety, the harmless non-floating type aluminum paste pigment of environmental protection, is very significant.
Summary of the invention
The object of this invention is to provide that a kind of production method is simple, cost is low, the preparation method to human-body safety, the harmless non-floating type aluminum paste pigment of environmental protection.
The object of the present invention is achieved like this:
The preparation method of the non-floating type aluminum paste pigment of environmental protection, step is as follows:
(1) ball milling: ball-type aluminium powder is mixed in weight ratio at 1: 1 to solvent is mid-enters ball mill grinding, drum's speed of rotation per minute 37 turns, and built-in temperature 50-55 °, makes platy shaped particle; Pigment sheet particle suspension is delivered to storage tank by vacuum pressure by pipeline to be precipitated;
(2) screening: step (1) product is inserted to sieve apparatus, obtain different-grain diameter lamellar pigment; Pigment suspension body after screening is delivered to storage tank by vacuum pressure by pipeline to be precipitated;
(3) press filtration: step (2) product is inserted to pressure filter press filtration, and separated solvent, obtains solid filter cake;
(4) by step (3) product, add solvent and auxiliary agent, insert kneader and mediate, make containing solid weight part 65% the aluminum paste pigment product of weight of solvent part 35%.
The weight ratio ingredient of step (1) and the described solvent of step (4) is:
30 parts of N-BUTYL ACETATEs; 20 parts of methylethylketones; 20 parts of methyl iso-butyl ketone (MIBK); 30 parts of ethanol.
On ball mill inwall described in step (1), there are oblique 45 ° of diversion trenchs.
The sieve apparatus that step (2) is described, sieve number is 100 orders, 200 orders, 325 orders, 400 orders, 500 orders.
The described auxiliary agent weight ratio ingredient of step (4) is:
20 parts of CALCIUM ACRYLATE; 20 parts of alkyd; 20 parts of urethane.
Main points of the present invention are; The solvent that each step is used, auxiliary agent are human-body safety, harmless material, effectively reduced heavy metal substance, polycyclic aromatic hydrocarbons material, EU REACH Legislation first, the content of second batch high attention rate material, avoid aluminium-silver slurry to be applied in the injury to human body behind the finished product surface, reached the requirement of environmental protection.
Each step in the inventive method, all adopts an effective measure simultaneously, has guaranteed that aluminium-silver slurry product reaches the safety requirements to human body.These measures comprise:
1. aluminium powder, solvent, ball-milling additive, steel ball, before adding ball mill, must detect through environmental protection project, strictly controls harmful substance contents.
2. the mixture sampling after ball milling is carried out to environmental protection project detection, follow-up control harmful substance contents.
3. the finished product mixture sampling after mediating is carried out to environmental protection project detection, Accurate Determining product harmful substance contents.
In the concrete enforcement of the present invention, note following item:
Ball milling: HALL ball-milling technology, ball-type aluminium powder is mixed in solvent and adds relevant auxiliary agent and grind, be formed into platy shaped particle.Steel ball in ball mill must meet certain condition: have a certain size ratio, unlike material, Different Weight.On ball mill inwall, should have oblique 45 ° of diversion trenchs, the steel ball whereabouts space enough because diversion trench lifting produces while guaranteeing ball mill rotation, produces enough overdraft.When ball mill rotates, in machine, room temps should be controlled between 50-55 °, and outside wall temperature observed value should be between 40-50 °.Debugging drum's speed of rotation, carries out turn/per minute of real-time monitoring to 37 according to factors such as voltages.After ball mill work completes, pigment suspension body should be delivered to storage tank by vacuum pressure by pipeline and precipitate.
Screening: the pigment suspension body after grinding, again through screening, is obtained to different-grain diameter pigment platy shaped particle.Sieve apparatus uses the screen cloth of different meshes, as 100 orders, 200 orders, 325 orders, 400 orders, 500 orders.In sieve apparatus working process, answer accurate recording screening beginning and ending time and screening number of times.After sieve apparatus work completes, the pigment suspension body after screening should be delivered to storage tank by vacuum pressure by pipeline and precipitate.
Press filtration: by the pressure filter press filtration of pigment suspension body, make its solvent separated with aluminium flake, obtain the filter cake of higher-solid.In pressure filter working process, should observe and detect the features such as the color of solvent oil after press filtration and aluminium flake content.
After sieve apparatus and pressure filter work complete, screen cloth and filter screen should be cleaned, avoid aluminium flake residual.
Mediate: in aluminium cake, add specific solvent and special auxiliary agent, finally forming solid part is 65%, the final finished that solvent is 35%.In kneader working process, answer accurate recording kneading time, amount of solvent, additive dosage.
Aluminium powder, solvent, ball-milling additive, steel ball, before adding ball mill, must detect through environmental protection project, strictly controls harmful substance contents.
Mixture sampling after ball milling is carried out to environmental protection project detection, follow-up control harmful substance contents.
Finished product mixture sampling after mediating is carried out to environmental protection project detection, determine the finished product harmful substance contents.
The preparation method of the non-floating type aluminium-silver slurry of environmental protection of the present invention, technical process is: ball milling-screening-press filtration-centrifugation-kneading.
Advantage of the present invention is:
1, use safety, to human body toxicological harmless, injury effect.
2, can be used in conjunction with multiple base-material, be widely used.
3, film durablely, protect effective.
4, production technique is simple, and cost is cheap.
Embodiment
Below by embodiment, the present invention will be further described.
Embodiment 1:
The preparation method of the non-floating type aluminum paste pigment of environmental protection, step is as follows:
1, prepare solvent: get 3 kilograms of N-BUTYL ACETATEs; 2 kilograms of methylethylketones; 2 kilograms of methyl iso-butyl ketone (MIBK); 3 kilograms of ethanol, mix.
2, ball milling: get 10 kilograms of ball-type aluminium powders, be mixed in 10 kilograms of solvents, slowly stir 20min, to evenly mixing.Insert ball mill grinding, drum's speed of rotation per minute 37 turns, built-in temperature 50-55 °, and casing temperature 40-45 °, makes platy shaped particle; Pigment sheet particle suspension is delivered to storage tank by vacuum pressure by pipeline to be precipitated.
3, screening: ball milling after product is inserted to sieve apparatus, and sieve number is 100 orders, obtains particle diameter lamellar pigment; Pigment suspension body after screening is delivered to storage tank by vacuum pressure by pipeline to be precipitated.
4, press filtration: above-mentioned product is inserted to pressure filter press filtration, and separated solvent, obtains solid filter cake;
5, formulation aid: get 30 grams of N-BUTYL ACETATEs; 20 grams of methylethylketones; 20 grams of methyl iso-butyl ketone (MIBK); 30 grams of ethanol, mix.
6, by solid filter cake, add solvent and auxiliary agent, insert kneader and mediate, make containing solid weight part 65% the aluminum paste pigment product of weight of solvent part 35%.
Get 4 kilograms of the above-mentioned aluminum paste pigment products making, add in 96 kilograms, red priming paint, be uniformly mixed, for car paint.
Embodiment 2:
The preparation method of the non-floating type aluminum paste pigment of environmental protection, step is as follows:
1, prepare solvent: get 3 kilograms of N-BUTYL ACETATEs; 2 kilograms of methylethylketones; 2 kilograms of methyl iso-butyl ketone (MIBK); 3 kilograms of ethanol, mix.
2, ball milling: get 8 kilograms of ball-type aluminium powders, be mixed in 10 kilograms of solvents, slowly stir 15min, to evenly mixing.Insert ball mill grinding, drum's speed of rotation per minute 37 turns, built-in temperature 50-55 °, and casing temperature 40-45 °, makes platy shaped particle; Pigment sheet particle suspension is delivered to storage tank by vacuum pressure by pipeline to be precipitated.
3, screening: ball milling after product is inserted to sieve apparatus, and sieve number is 400 orders, obtains particle diameter lamellar pigment; Pigment suspension body after screening is delivered to storage tank by vacuum pressure by pipeline to be precipitated.
4, press filtration: above-mentioned product is inserted to pressure filter press filtration, and separated solvent, obtains solid filter cake;
5, formulation aid: get 30 grams of N-BUTYL ACETATEs; 20 grams of methylethylketones; 20 grams of methyl iso-butyl ketone (MIBK); 30 grams of ethanol, mix.
6, by solid filter cake, add solvent and auxiliary agent, insert kneader and mediate, make containing solid weight part 65% the aluminum paste pigment product of weight of solvent part 35%.
Get 8 kilograms of the above-mentioned aluminum paste pigment products making, add in 92 kilograms of fine silver color bottom paints, be uniformly mixed, for metallic substance coating.
Embodiment 3:
The preparation method of the non-floating type aluminum paste pigment of environmental protection, step is as follows:
1, prepare solvent: get 3 kilograms of N-BUTYL ACETATEs; 2 kilograms of methylethylketones; 2 kilograms of methyl iso-butyl ketone (MIBK); 3 kilograms of ethanol, mix.
2, ball milling: get 6 kilograms of ball-type aluminium powders, be mixed in 10 kilograms of solvents, slowly stir 10min, to evenly mixing.Insert ball mill grinding, drum's speed of rotation per minute 37 turns, built-in temperature 50-55 °, and casing temperature 40-45 °, makes platy shaped particle; Pigment sheet particle suspension is delivered to storage tank by vacuum pressure by pipeline to be precipitated.
3, screening: ball milling after product is inserted to sieve apparatus, and sieve number is 500 orders, obtains particle diameter lamellar pigment; Pigment suspension body after screening is delivered to storage tank by vacuum pressure by pipeline to be precipitated.
4, press filtration: above-mentioned product is inserted to pressure filter press filtration, and separated solvent, obtains solid filter cake;
5, formulation aid: get 30 grams of N-BUTYL ACETATEs; 20 grams of methylethylketones; 20 grams of methyl iso-butyl ketone (MIBK); 30 grams of ethanol, mix.
6, by solid filter cake, add solvent and auxiliary agent, insert kneader and mediate, make containing solid weight part 65% the aluminum paste pigment product of weight of solvent part 35%.
Get 10 kilograms of the above-mentioned aluminum paste pigment products making, add in 90 kilograms of grey color bottom paints, be uniformly mixed, for anti corrosion coiing for storage tank.
Embodiment 4:
The aluminum paste pigment product that embodiment 1 makes, measured result is as follows:
ROHS method European Union standard is improved front measured value and is improved rear measured value
Plumbous 100ppm 300ppm < 2ppm
Mercury 1000ppm 5000ppm < 2ppm
Cadmium 1000ppm 2800ppm < 2ppm
Sexavalent chrome 1000ppm 4600ppm < 2ppm
Polybrominated biphenyl 1000ppm 4200ppm < 5ppm
Polybromodiphenyl ether 1000ppm 6200ppm < 5ppm
Embodiment 5:
Embodiment 2 product measured results are as follows;
PAHS rules European Union standard is improved front measured value and is improved rear measured value
Naphthalene 1ppm 300ppm < 1ppm
16 summation < 10ppm 1600ppm < 10ppm of benzo (a) anthracene
Cobalt chloride concentration < 0.01% concentration > 0.1% concentration < 0.005%
Embodiment 6:
Embodiment 3 product measured results are as follows;
SVHC material European Union standard is improved front measured value and is improved rear measured value
Lead chromate (chrome yellow) concentration < 0.01% concentration > 0.1% concentration < 0.005%
Above-described embodiment is preference of the present invention, is not used for limiting the present invention, and all within principle of the present invention, any modifications and variations of doing, all within protection scope of the present invention.
Claims (2)
1. a preparation method for the non-floating type aluminum paste pigment of environmental protection, step is as follows:
(1) ball milling: ball-type aluminium powder is mixed in solvent and is placed in ball mill grinding with weight ratio 1:1, have oblique 45 ° of diversion trenchs on this ball mill inwall, drum's speed of rotation per minute 37 turns, and built-in temperature 50-55 ℃, makes platy shaped particle; Pigment sheet particle suspension is delivered to storage tank by vacuum pressure by pipeline to be precipitated; The weight ratio ingredient of described solvent is 30 parts of N-BUTYL ACETATEs, 20 parts of methylethylketones, 20 parts of methyl iso-butyl ketone (MIBK), 30 parts of ethanol;
(2) screening: step (1) product is inserted to sieve apparatus, obtain different-grain diameter lamellar pigment; Pigment suspension body after screening is delivered to storage tank by vacuum pressure by pipeline to be precipitated;
(3) press filtration: step (2) product is inserted to pressure filter press filtration, and separated solvent, obtains solid filter cake;
(4) by step (3) product, add solvent and auxiliary agent, insert kneader and mediate, make containing solid weight part 65% the aluminum paste pigment product of weight of solvent part 35%; The weight ratio ingredient of described solvent is 30 parts of N-BUTYL ACETATEs, 20 parts of methylethylketones, 20 parts of methyl iso-butyl ketone (MIBK), 30 parts of ethanol; The weight ratio ingredient of described auxiliary agent is 20 parts of acrylate, 20 parts of alkyd, 20 parts of urethane.
2. the preparation method of the non-floating type aluminum paste pigment of environmental protection according to claim 1, is characterized in that: the sieve apparatus that step (2) is described, sieve number is 100 orders, 200 orders, 325 orders, 400 orders, 500 orders.
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| CN201010250272.9A CN102372933B (en) | 2010-08-11 | 2010-08-11 | Preparation method of environmentally friendly non-floating aluminum paste pigment |
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| CN201010250272.9A CN102372933B (en) | 2010-08-11 | 2010-08-11 | Preparation method of environmentally friendly non-floating aluminum paste pigment |
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| CN103756372B (en) * | 2012-08-07 | 2015-08-05 | 江苏伊特复合新材料有限公司 | The preparation method of high-insulativity silicon dioxide coating type water aluminum-silver slurry |
| CN103627220B (en) * | 2013-12-12 | 2016-02-17 | 重庆诺泰颜料有限公司 | The preparation method of environment-friendlyaluminium aluminium pigment |
| CN111454593A (en) * | 2020-04-17 | 2020-07-28 | 安徽赛尔新材料科技有限公司 | Preparation method of mercerizing electroplating-grade aluminum paste |
| CN112480720B (en) * | 2020-11-26 | 2021-10-29 | 上海颜钛实业有限公司 | Preparation method of aluminum paste pigment and product prepared by preparation method |
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| BR9914744A (en) * | 1998-10-23 | 2001-07-31 | Avery Dennison Corp | Process for the production of metal flakes |
| US6863851B2 (en) * | 1998-10-23 | 2005-03-08 | Avery Dennison Corporation | Process for making angstrom scale and high aspect functional platelets |
| CA2446428C (en) * | 2001-05-21 | 2010-10-26 | Ciba Specialty Chemicals Holding Inc. | Method for the production of plane-parallel platelets by using organic separating agents |
| CN100540621C (en) * | 2005-12-21 | 2009-09-16 | 比亚迪股份有限公司 | A kind of primer composition and its Preparation method and use |
| CN101708553B (en) * | 2009-12-11 | 2011-04-20 | 长沙奥特金属颜料有限公司 | Method for manufacturing high-metal-sense aluminum silver paste |
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