CN103819948B - The preparation method of the water aluminum-silver slurry that no hydrogen is separated out - Google Patents
The preparation method of the water aluminum-silver slurry that no hydrogen is separated out Download PDFInfo
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Abstract
A preparation method for silicon dioxide coating type water aluminum-silver slurry, it comprises: (1). get the tetraethoxy of 12-18 weight part, by the isopropanol of 32-36 weight part, stored in a container; (2). get 4-6 weight part ammoniacal liquor and 12-18 weight part pure water, with the dilution of 32-36 parts by weight of isopropyl alcohol, stored in b container; (3). take oiliness aluminium-silver slurry and put into dispersion cylinder, then add Virahol and organosilicon, and stirring at low speed dispersion mixing; (4). the solution in described a and b two container is added drop-wise in dispersion cylinder, and timing from dropping solution, close heating unit after 6 hours; (5). use press filtration de-oiling after leaving standstill; (6). mediate post-drying and obtain finished product.The preparation method of silicon dioxide coating type water aluminum-silver slurry of the present invention, technique is simple, and provide alkaline environment, can promote the hydrolysis of organosilicon/tetraethoxy, covered effect is good.
Description
The application is divisional application, the application number of original application: 201210277512.3, the applying date: 2012-08-07, invention and created name " a kind of preparation method of silicon dioxide coating type water aluminum-silver slurry ".
Technical field
The present invention relates to a kind of preparation method of silicon dioxide coating type water aluminum-silver slurry.
Background technology
Aluminium-silver slurry is the maximum metallic pigment with silver gray metalluster of a kind of usage quantity, and its manufacture method adopts the method for wet ball-milling mostly.Wet ball grinding adopts organic solvent mainly to improve the efficiency of ball aluminum powder flaking, prevents aluminium powder from contacting the danger avoiding exploding with air simultaneously.The use of organic solvent, the product obtained is oiliness aluminium-silver slurry, is widely used at oil paint and oil-based ink field.
Along with the pay attention to day by day of environmental requirement, coating and printing ink industry is just towards the future development of water-based.And oiliness aluminium-silver slurry can not obtain good dispersion in water-borne coatings and ink, thus its application receives restriction.
On the other hand, aluminium powder surfactivity is high, can react produce hydrogen with water, not only can reduce aluminium powder surface metal gloss, have influence on the use properties of aluminium-silver slurry product, and the hydrogen generated has the danger of blast, cause the production of water-borne coatings and ink, storage, transportation dangerous.
In order to meet water-borne coatings and ink to the application requiring of aluminium-silver slurry, usually need to carry out surface modification to prepare water aluminum-silver slurry to aluminium-silver slurry, modification technology mainly contains the methods such as tensio-active agent surface modification, surface passivation modification and oxide surface coating modification.
Summary of the invention
Technical problem to be solved by this invention is to provide the preparation method of simple, the easy to operate silicon dioxide coating type water aluminum-silver slurry of a kind of technique.
For solving the problems of the technologies described above, the preparation method of silicon dioxide coating type water aluminum-silver slurry provided by the invention, its step is as follows:
1). get the tetraethoxy of 12-18 weight part, by the isopropanol of 32-36 weight part, stored in a container;
2). get 4-6 weight part ammoniacal liquor and 12-18 weight part pure water, with the dilution of 32-36 parts by weight of isopropyl alcohol, stored in b container;
3). take oiliness aluminium-silver slurry 95-105 weight part and put into dispersion cylinder, then add the Virahol of 200-204 weight part and the organosilicon of 2.5-3.5 weight part, and dispersed with stirring mixing; Meanwhile, by the heating temperatures of dispersion cylinder to 35-45 DEG C; Described stirring at low speed, temperature controlled step, coated for carrying out first time, no hydrogen is separated out.
4). the solution in described a and b two container is added drop-wise in dispersion cylinder simultaneously, solution in a and b two container dropwised in 30-60 minute, control stirrer rotating speed 40-50 circle/minute, and from dropping solution timing, close heating unit after 6 hours; Under these processing condition, SiO
2can form the protective membrane of the amorphous densification of one deck on aluminium-silver slurry surface, this rete can play a very good protection to aluminium-silver slurry.
5). leave standstill again and carry out de-oiling with pressure filter after 10 hours, coated to carry out second time, improve the acid proof object of aluminium-silver slurry.Again material is put into whizzer and carry out secondary de-oiling.
6). add auxiliary agent at material and mediate, mediate post-drying and obtain finished product.Dry time, material is placed in Vacuumdrier and dries, the bake out temperature in Vacuumdrier is 40-50 DEG C, rotating speed be 7-8 circle/minute.
As preferred scheme, in described step (6), add auxiliary agent by the 5-7% of weight of material after de-oiling and mediate, kneading time is 20-40 minute.Kneading auxiliary agent is the one in oleic acid, coupling agent, oxidation inhibitor, flow agent.
Technique effect of the present invention:
(1) preparation method of silicon dioxide coating type water aluminum-silver slurry of the present invention, technique is simple, and provide alkaline environment, can promote the hydrolysis of organosilicon/tetraethoxy, covered effect is good.Silicon dioxide coating type aluminium silver powder of the present invention is widely used in coating, paint, ink, printing, stamp, injection moulding, silica gel, leather, toy, artwork, phone housing, television enclosure, automobile and other industries.Both may be used for oil paint, and may be used for water-borne coatings again, silicon dioxide coating type aluminium silver powder has high temperature resistant, and acid and alkali-resistance is anti-oxidant, the features such as insulativity is stronger;
(2) associated technical parameters of silicon dioxide coating type water aluminum-silver slurry of the present invention:
High-insulativity: the voltage breakdown of all test samples is more than 200 VAC/mil;
Resistance to acids and bases: the method for testing in coatings industry is with the dip-coating of common low carbon rod iron or brushes tested coating, after dry 7 days, immerses 2/3 area of coupon in the acid solution (or alkali lye) of normality at (25 ± 1) DEG C.Or by sample in acid, alkaline media and alternately placement in atmosphere, make oxygen penetrate on coupon through wet paint film, the destruction situation of examination paint film.Quantitative check film situation, by its result of standard determination.PH value 8.5-9; High temperature resistant: 300-400 DEG C.
Embodiment
Embodiment 1
A preparation method for silicon dioxide coating type water aluminum-silver slurry, its step is as follows:
1. get the tetraethoxy of 15kg, by the isopropanol of 34kg, stored in a container;
2. get 5kg ammoniacal liquor and 15kg pure water, use 34kg isopropanol, stored in b container;
3. take oiliness aluminium-silver slurry 100kg and put into dispersion cylinder, then add the Virahol of 202kg and the organosilicon of 3kg, and stirring at low speed dispersion mixing; Meanwhile, the jacket temperature of dispersion cylinder is heated to 40 DEG C;
4. the solution in a and b two container is slowly added drop-wise in dispersion cylinder simultaneously, solution in a and b two container dropwised at 30-60 minute, and from dropping solution timing, control stirrer rotating speed 45 circle/minute, close heating unit after 6 hours, coating reaction terminates;
5., after coating reaction terminates, place more than 10 hours in the solution, terminate rear pressure filter and carry out de-oiling, then material is put into whizzer and carry out secondary de-oiling, after de-oiling, weigh weight of material;
6. add auxiliary agent by 6% of weight of material after de-oiling to mediate, the time is 30 minutes, and mediate and be placed in Vacuumdrier and dry, the bake out temperature in Vacuumdrier is 45 DEG C, rotating speed be 8 circles/minute.
Embodiment 2
A preparation method for silicon dioxide coating type water aluminum-silver slurry, its step is as follows:
1. get the tetraethoxy of 12kg, by the isopropanol of 32kg, stored in a container;
2. get 4kg ammoniacal liquor and 12kg pure water, use 32kg isopropanol, stored in b container;
3. take oiliness aluminium-silver slurry 95kg and put into dispersion cylinder, then add the Virahol of 200kg and the organosilicon of 2.5kg, and stirring at low speed dispersion mixing;
4. while the dispersion of dispersion machine low speed is stirred, the jacket temperature of dispersion cylinder is heated to 35 DEG C, now the solution in a and b two container is slowly added drop-wise in dispersion cylinder simultaneously, solution in a and b two container dropwised at 30-60 minute, and timing from dropping solution, control stirrer rotating speed 50 circle/minute, close heating unit after 6 hours, coating reaction terminates;
5., after coating reaction terminates, place more than 10 hours in the solution, terminate rear pressure filter and carry out de-oiling, then material is put into whizzer and carry out secondary de-oiling, after de-oiling, weigh weight of material;
6. add auxiliary agent by 5% of weight of material after de-oiling to mediate, the time is 40 minutes, and mediate and be placed in Vacuumdrier and dry, the bake out temperature in Vacuumdrier is 50 DEG C, rotating speed be 7 circles/minute.
Embodiment 3
A preparation method for silicon dioxide coating type water aluminum-silver slurry, its step is as follows:
1. get the tetraethoxy of 18kg, by the isopropanol of 36kg, stored in a container;
2. get 6kg ammoniacal liquor and 18kg pure water, use 36kg isopropanol, stored in b container;
3. take oiliness aluminium-silver slurry 105kg and put into dispersion cylinder, then add the Virahol of 204kg and the organosilicon of 3.5kg, and stirring at low speed dispersion mixing;
4. while the dispersion of dispersion machine low speed is stirred, the jacket temperature of dispersion cylinder is heated to 45 DEG C, now the solution in a and b two container is slowly added drop-wise in dispersion cylinder simultaneously, solution in a and b two container dropwised at 30-60 minute, and timing from dropping solution, control stirrer rotating speed 40 circle/minute, close heating unit after 6 hours, coating reaction terminates;
5., after coating reaction terminates, place more than 10 hours in the solution, terminate rear pressure filter and carry out de-oiling, then material is put into whizzer and carry out secondary de-oiling, after de-oiling, weigh weight of material;
6. add auxiliary agent by 7% of weight of material after de-oiling to mediate, the time is 20 minutes, and mediate and be placed in Vacuumdrier and dry, the bake out temperature in Vacuumdrier is 40 DEG C, rotating speed be 8 circles/minute.
Claims (1)
1. a preparation method for silicon dioxide coating type water aluminum-silver slurry, comprises the steps:
(1) tetraethoxy of 12-18 weight part is got, by the isopropanol of 32-36 weight part, stored in a container;
(2) 4-6 weight part ammoniacal liquor and 12-18 weight part pure water is got, with the dilution of 32-36 parts by weight of isopropyl alcohol, stored in b container;
(3) take oiliness aluminium-silver slurry 95-105 weight part and put into dispersion cylinder, then add the Virahol of 200-204 weight part and the organosilicon of 2.5-3.5 weight part, and dispersed with stirring mixing; Meanwhile, by the heating temperatures of dispersion cylinder to 35-45 DEG C;
(4) be added drop-wise in dispersion cylinder by the solution in described a and b two container, the solution in a and b two container dropwised in 30-60 minute simultaneously, control stirrer rotating speed 40-50 circle/minute;
and timing from dropping solution, close heating unit after 6 hours;
(5) leave standstill again and carry out de-oiling with pressure filter after 10 hours, then material is put into whizzer and carry out secondary de-oiling;
(6) add auxiliary agent at material to mediate, mediate post-drying and obtain finished product; Dry time, material is placed in Vacuumdrier and dries, the bake out temperature in Vacuumdrier is 40-50 DEG C, rotating speed be 7-8 circle/minute;
add auxiliary agent by the 5-7% of weight of material after de-oiling to mediate, kneading time is 20-40 minute.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210277512.3A CN102766360B (en) | 2012-08-07 | 2012-08-07 | Preparation method of silica coated aqueous aluminum paste |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210277512.3A Division CN102766360B (en) | 2012-08-07 | 2012-08-07 | Preparation method of silica coated aqueous aluminum paste |
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| CN103819948A CN103819948A (en) | 2014-05-28 |
| CN103819948B true CN103819948B (en) | 2015-09-02 |
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| CN201410056260.0A Expired - Fee Related CN103740144B (en) | 2012-08-07 | 2012-08-07 | The preparation method of the water aluminum-silver slurry that covered effect is good |
| CN201410056259.8A Expired - Fee Related CN103740143B (en) | 2012-08-07 | 2012-08-07 | The preparation method of water aluminum-silver slurry |
| CN201410056257.9A Expired - Fee Related CN103740142B (en) | 2012-08-07 | 2012-08-07 | The preparation method of high thermal resistance silicon dioxide coating type water aluminum-silver slurry |
| CN201410057438.3A Expired - Fee Related CN103773088B (en) | 2012-08-07 | 2012-08-07 | The preparation method of the silicon dioxide coating type water aluminum-silver slurry of safety |
| CN201410056256.4A Expired - Fee Related CN103740141B (en) | 2012-08-07 | 2012-08-07 | The preparation method of the simple silicon dioxide coating type water aluminum-silver slurry of technique |
| CN201410056499.8A Expired - Fee Related CN103756372B (en) | 2012-08-07 | 2012-08-07 | The preparation method of high-insulativity silicon dioxide coating type water aluminum-silver slurry |
| CN201410056267.2A Expired - Fee Related CN103756373B (en) | 2012-08-07 | 2012-08-07 | The preparation method of easy to operate silicon dioxide coating type water aluminum-silver slurry |
| CN201210277512.3A Expired - Fee Related CN102766360B (en) | 2012-08-07 | 2012-08-07 | Preparation method of silica coated aqueous aluminum paste |
| CN201410056266.8A Expired - Fee Related CN103819947B (en) | 2012-08-07 | 2012-08-07 | The preparation method of high-insulativity water aluminum-silver slurry |
| CN201410056338.9A Expired - Fee Related CN103819948B (en) | 2012-08-07 | 2012-08-07 | The preparation method of the water aluminum-silver slurry that no hydrogen is separated out |
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| CN201410056260.0A Expired - Fee Related CN103740144B (en) | 2012-08-07 | 2012-08-07 | The preparation method of the water aluminum-silver slurry that covered effect is good |
| CN201410056259.8A Expired - Fee Related CN103740143B (en) | 2012-08-07 | 2012-08-07 | The preparation method of water aluminum-silver slurry |
| CN201410056257.9A Expired - Fee Related CN103740142B (en) | 2012-08-07 | 2012-08-07 | The preparation method of high thermal resistance silicon dioxide coating type water aluminum-silver slurry |
| CN201410057438.3A Expired - Fee Related CN103773088B (en) | 2012-08-07 | 2012-08-07 | The preparation method of the silicon dioxide coating type water aluminum-silver slurry of safety |
| CN201410056256.4A Expired - Fee Related CN103740141B (en) | 2012-08-07 | 2012-08-07 | The preparation method of the simple silicon dioxide coating type water aluminum-silver slurry of technique |
| CN201410056499.8A Expired - Fee Related CN103756372B (en) | 2012-08-07 | 2012-08-07 | The preparation method of high-insulativity silicon dioxide coating type water aluminum-silver slurry |
| CN201410056267.2A Expired - Fee Related CN103756373B (en) | 2012-08-07 | 2012-08-07 | The preparation method of easy to operate silicon dioxide coating type water aluminum-silver slurry |
| CN201210277512.3A Expired - Fee Related CN102766360B (en) | 2012-08-07 | 2012-08-07 | Preparation method of silica coated aqueous aluminum paste |
| CN201410056266.8A Expired - Fee Related CN103819947B (en) | 2012-08-07 | 2012-08-07 | The preparation method of high-insulativity water aluminum-silver slurry |
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| CN104312220A (en) * | 2014-10-25 | 2015-01-28 | 合肥旭阳铝颜料有限公司 | Environment-friendly waterborne type aluminum paste and preparation method thereof |
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| CN105949868A (en) * | 2016-06-17 | 2016-09-21 | 枞阳县新天地高新材料有限公司 | Nano silicon dioxide wrapped type aluminum paste |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103740143B (en) | 2015-08-05 |
| CN103740142A (en) | 2014-04-23 |
| CN103740142B (en) | 2015-08-05 |
| CN103819948A (en) | 2014-05-28 |
| CN103819947B (en) | 2015-08-05 |
| CN103819947A (en) | 2014-05-28 |
| CN103740144B (en) | 2015-11-11 |
| CN103773088A (en) | 2014-05-07 |
| CN103756372B (en) | 2015-08-05 |
| CN103756372A (en) | 2014-04-30 |
| CN103756373A (en) | 2014-04-30 |
| CN102766360B (en) | 2014-04-02 |
| CN103773088B (en) | 2016-01-13 |
| CN103740144A (en) | 2014-04-23 |
| CN103740143A (en) | 2014-04-23 |
| CN103740141A (en) | 2014-04-23 |
| CN102766360A (en) | 2012-11-07 |
| CN103740141B (en) | 2015-08-05 |
| CN103756373B (en) | 2015-08-05 |
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