CN102794452A - Preparation method of aluminum silver paste - Google Patents
Preparation method of aluminum silver paste Download PDFInfo
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- CN102794452A CN102794452A CN2011101358617A CN201110135861A CN102794452A CN 102794452 A CN102794452 A CN 102794452A CN 2011101358617 A CN2011101358617 A CN 2011101358617A CN 201110135861 A CN201110135861 A CN 201110135861A CN 102794452 A CN102794452 A CN 102794452A
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- liquid nitrogen
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- flake aluminum
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Abstract
The invention discloses a preparation method of aluminum silver paste. The preparation method comprises the following steps of: putting aluminum powder with stipulated particle size, grinding aid and liquid nitrogen into a vibrating mill which is heat-insulation under the state of bearing the pressure intensity of 6MPa according to certain proportion; grinding for 3-6 hours; vibrating and grinding into a mixture of liquid nitrogen and sheet-shaped aluminum powder; injecting a solid and liquid mixture into a vortrap at high flowing speed through a pump, wherein the mixture (of liquid nitrogen and sheet-shaped aluminum powder) which does not achieve the fine degree returns to the vibrating mill and is grinded continuously; inputting the sheet-shaped aluminum powder with the mass percentage less than 10% of the liquid nitrogen into a stirring container with certain pressure intensity and temperature; injecting solvents and aids required to be mixed in according to proportion; and then stirring and mixing uniformly; and gasifying and discharging the liquid nitrogen, thereby obtaining the aluminum silver paste product in the stirring container. The preparation method of the aluminum silver paste provided by the invention has the advantages that the aluminum silver paste is produced continuously in the liquid nitrogen protection atmosphere, so that the fire disaster hazard of the production process is eliminated; and aluminum powder is grinded by adopting the vibrating mill with high efficiency, and the vibrating mill can save 2/3 of time compared with a ball mill under the same specification and yield, the solvent damage and solvent oil abandoning are avoided, and no pollutant is discharged.
Description
Technical field
The present invention relates to a kind of preparing process of aluminum paste, belong to the metallic pigments technical field.
Background technology
To be the metallic aluminium powder that requires certain particle size, solvent naphtha (No. 150 solvent naphthas, No. 200 solvent naphthas, aviation kerosine etc.) with auxiliary agent mix the production method of existing aluminum paste according to a certain percentage puts into ball mill and carry out wet grinding with diameter at the mill ball (steel ball, corundum ball, glass marble etc.) of 1.5-15mm and become flake aluminum and starch; Detection reaches certain particle size, thickness is put into vibratory sieve to slurry more afterwards and sieved; Isolate the flake aluminum slurry of different grain size specification; Carrying out Separation of Solid and Liquid through centrifuge or filter press then comes out abradant most of separated from solvent in the flake aluminum slurry; Adjust the requirement that the solvent, the auxiliary agent that add mediation usefulness stir through kneader and reach certain specification again, just become the aluminum paste product.The whole production flow process is that equipment such as " ball mill-vibratory sieve-filter press-kneader " and the solvent naphtha container of assisting, pump, air compressor machine constitute.The mode of production of this aluminum paste is discontinuous, and employing ball mill grinding output is lower, milling time is long, energy consumption is high, and yield rate is lower; A large amount of open use volatility is arranged, inflammable solvent and discarded solvent naphtha is arranged, the flake aluminum in the slurry constantly is exposed between ball mill, vibratory sieve, filter press, agitator with the inflammable solvent mixture that volatilizees has disaster hidden-trouble the air.
Summary of the invention
For solving the defective of above-mentioned technology, the invention provides following technical scheme; Production procedure is made up of " vibromill---vortrap---Separation of Solid and Liquid filter---normal temperature and pressure stirred vessel " and auxiliary liquid nitrogen container, solvent container and auxiliary agent container, pipeline, pump, valve successively; Wherein vibromill, vortrap, Separation of Solid and Liquid filter are equipped with the relief valve of setting pressure release 5MPa; All have the insulation requirement with connected pipeline, valve, and pressure-bearing reaches the pressure of 6MPa.
The preparation method that the present invention provides a kind of aluminium silver to incite somebody to action comprises following process steps:
Step 1: the grinding aid of 40%-50% aluminium powder, 0.5%-1.5% and the liquid nitrogen of 50%-60% are put into the vibromill of pressure-bearing 6MPa insulation, and it is 3-6h that milling time is set in airtight back, and vibro-grinding becomes the mixture of liquid nitrogen and flake aluminum;
Step 2: inject vortrap to the mixture high flow rate of liquid nitrogen and flake aluminum through pump, under the vortrap effect, tell the mixture of the flake aluminum that reaches fineness and liquid nitrogen and do not reach the flake aluminum of fineness and the mixture of liquid nitrogen; Flake aluminum that does not reach fineness and liquid nitrogen mixture are continued in the vibromill to grind through being pumped back to;
Step 3: the flake aluminum and the liquid nitrogen mixture that will reach fineness inject the Separation of Solid and Liquid filter, and a large amount of liquid nitrogen are separated with ground flake aluminum, and liquid nitrogen then recycles through pipeline;
Step 4: in the pressure of the flake aluminum of the liquid nitrogen that has mass fraction＜10% input 1.0MPa, stirred vessel that temperature is 25 ℃; Proportionally 30%-40% solvent naphtha, the 1%-2% auxiliary agent that need sneak into of injection stirs then, and after mixing, after liquid nitrogen was discharged through gasification, mixture just became the aluminum paste product in the container.
Described grinding aid is the acid of hard ester, in be situated between acid, the oleic acid one or more.
Described solvent naphtha is 150# or 200#.
Described auxiliary agent comprises anti-settling agent and antioxidant, and the mass ratio of its each composition is: anti-settling agent 70-80%, antioxidant 20-30%.
Described anti-settling agent is one or more in polyamide wax, Tissuemat E or the organobentonite; Antioxidant is one or more among P-7500, T501, the T508.
Because adopt technique scheme, the present invention has following beneficial effect:
1, the present invention produces aluminum paste continuously in protection of liquid nitrogen atmosphere system, eliminates the disaster hidden-trouble of production process, adopts the high vibromill of efficient to grind aluminium powder;
2, same specification PR ball milling saves for 2/3 time, does not have solvent loss and discarded solvent naphtha when grinding, non-pollutant discharge.
The specific embodiment
Routine embodiment is a preference with the atomizing ball aluminum powder pigment of producing 40kg down, and preparation process of the present invention is following:
Embodiment 1:
Step 1: put into the vibromill of pressure-bearing 6MPa insulation to the liquid nitrogen of the grinding aid of the atomizing ball aluminum powder of 40kg5um, 0.4kg and 50kg, it is 5h that milling time is set in airtight back, and vibro-grinding becomes the mixture of liquid nitrogen and flake aluminum;
Step 2: inject vortrap to the solidliquid mixture high flow rate through pump, regulate the vortrap switch, in liquid nitrogen separating greater than the flake aluminum of 15um fineness and flake aluminum smaller or equal to the 15um fineness; Flake aluminum and liquid nitrogen mixture greater than the 15um fineness continue to grind through being pumped back to vibromill;
Step 3: flake aluminum and liquid nitrogen mixture smaller or equal to the 15um fineness get into the Separation of Solid and Liquid filter, and the liquid nitrogen greater than 90% is separated with ground flake aluminum, and liquid nitrogen recycles through pipeline;
Step 4: be input to the flake aluminum that has smaller or equal to 10% liquid nitrogen in the stirred vessel of normal temperature and pressure; Mix after injecting solvent naphtha 15kg, auxiliary agent 0.5kg, obtain particle diameter after liquid nitrogen is discharged through gasification and be 65% aluminum paste product for the 15um solid content.
Embodiment 2:
Step 1: put into the vibromill of pressure-bearing 6MPa insulation to the liquid nitrogen of the grinding aid of the atomizing ball aluminum powder of 40kg5um, 0.6kg and 60kg, it is 5h that milling time is set in airtight back, and vibro-grinding becomes the mixture of liquid nitrogen and flake aluminum;
Step 2: inject vortrap to the solidliquid mixture high flow rate through pump, regulate the vortrap switch, in liquid nitrogen separating greater than the flake aluminum of 10um fineness and flake aluminum smaller or equal to the 10um fineness; Flake aluminum and liquid nitrogen mixture greater than the 10um fineness continue to grind through being pumped back to vibromill;
Step 3: flake aluminum and liquid nitrogen mixture smaller or equal to the 10um fineness get into the Separation of Solid and Liquid filter, and the liquid nitrogen greater than 90% is separated with ground flake aluminum, and liquid nitrogen recycles through pipeline;
Step 4: having in the stirred vessel that the flake aluminum that is less than or equal to 10% liquid nitrogen is input to normal temperature and pressure; Mix after injecting solvent naphtha 15kg, auxiliary agent 0.5kg, obtain particle diameter after liquid nitrogen is discharged through gasification and be that 10um contains admittedly is 63% aluminum paste product.
Embodiment 3:
Step 1: put into the vibromill of pressure-bearing 6MPa insulation to the liquid nitrogen of the grinding aid of the atomizing ball aluminum powder of 40kg7um, 0.4kg and 50kg, it is 3h that milling time is set in airtight back, and vibro-grinding becomes the mixture of liquid nitrogen and flake aluminum;
Step 2: get into vortrap to the solidliquid mixture high flow rate through pump, regulate the vortrap switch, in liquid nitrogen separating greater than the flake aluminum of 25um fineness and flake aluminum smaller or equal to the 25um fineness; Flake aluminum and liquid nitrogen mixture greater than the 25um fineness continue to grind through being pumped back to vibromill;
Step 3: flake aluminum and liquid nitrogen mixture smaller or equal to the 25um fineness get into the Separation of Solid and Liquid filter, and the liquid nitrogen greater than 90% is separated with ground flake aluminum, and liquid nitrogen recycles through pipeline;
Step 4: be input to the flake aluminum that has smaller or equal to 10% liquid nitrogen in the stirred vessel of normal temperature and pressure; Mix after injecting solvent naphtha 15kg, auxiliary agent 0.5kg, obtain particle diameter after liquid nitrogen is discharged through gasification and be that 25um contains admittedly is 68% aluminum paste product.
What should explain at last is: above embodiment only in order to the explanation the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification has carried out detailed explanation to the present invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the claim scope of the present invention.
Claims (5)
1. the preparation method of an aluminum paste is characterized in that: comprise following process steps:
Step 1: the grinding aid of 40%-50% aluminium powder, 0.5%-1.5% and the liquid nitrogen of 50%-60% are put into the vibromill of pressure-bearing 6MPa insulation, and it is 3-6h that milling time is set in airtight back, and vibro-grinding becomes the mixture of liquid nitrogen and flake aluminum;
Step 2: inject vortrap to the mixture high flow rate of liquid nitrogen and flake aluminum through pump, under the vortrap effect, the flake aluminum of telling the mixture of the flake aluminum that reaches fineness and liquid nitrogen and not reaching fineness separates with the mixture of liquid nitrogen; Flake aluminum that does not reach fineness and liquid nitrogen mixture are continued in the vibromill to grind through being pumped back to;
Step 3: the flake aluminum and the liquid nitrogen mixture that will reach fineness inject the Separation of Solid and Liquid filter, and a large amount of liquid nitrogen are separated with ground flake aluminum, and liquid nitrogen then recycles through pipeline;
Step 4: in the pressure of the flake aluminum of the liquid nitrogen that has mass fraction＜10% input 1.0MPa, stirred vessel that temperature is 25 ℃; Proportionally 30%-40% solvent naphtha, the 1%-2% auxiliary agent that need sneak into of injection stirs then, and after mixing, after liquid nitrogen was discharged through gasification, mixture just became the aluminum paste product in the container.
2. according to the preparation method of the said a kind of aluminum paste of claim 1, it is characterized in that: described grinding aid is the acid of hard ester, in be situated between acid, the oleic acid one or more.
3. according to the preparation method of the said a kind of aluminum paste of claim 1, it is characterized in that: described solvent naphtha is 150# or 200#.
4. according to the preparation method of the said a kind of aluminum paste of claim 1, it is characterized in that: described auxiliary agent comprises anti-settling agent and antioxidant, and the mass ratio of its each composition is: anti-settling agent 70-80%, antioxidant 20-30%.
5. according to the preparation method of the said a kind of aluminum paste of claim 4, it is characterized in that: described anti-settling agent is one or more in polyamide wax, Tissuemat E or the organobentonite; Antioxidant is one or more among P-7500, T501, the T508.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101358617A CN102794452A (en) | 2011-05-24 | 2011-05-24 | Preparation method of aluminum silver paste |
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|---|---|---|---|
| CN2011101358617A CN102794452A (en) | 2011-05-24 | 2011-05-24 | Preparation method of aluminum silver paste |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537700A (en) * | 2012-12-31 | 2014-01-29 | 袁志刚 | Method for producing flaky aluminum powder coating |
| CN103627220A (en) * | 2013-12-12 | 2014-03-12 | 重庆诺泰颜料有限公司 | Preparation method of environment-friendly aluminium pigment |
| 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 |
| CN104341861A (en) * | 2014-10-25 | 2015-02-11 | 合肥旭阳铝颜料有限公司 | Low temperature resistant waterborne aluminum paste and preparation method thereof |
| CN104356762A (en) * | 2014-10-25 | 2015-02-18 | 合肥旭阳铝颜料有限公司 | Water and oil proofing water-based aluminum-silver pulp and preparation method thereof |
| CN104371426A (en) * | 2014-10-25 | 2015-02-25 | 合肥旭阳铝颜料有限公司 | Water-based aluminum paste for screen printing and preparation method thereof |
| CN105440812A (en) * | 2015-12-23 | 2016-03-30 | 天津利安隆新材料股份有限公司 | Thioester type auxiliary antioxidant-added aluminum paste composition |
| CN105462370A (en) * | 2015-12-23 | 2016-04-06 | 天津利安隆新材料股份有限公司 | Aluminium paste composition added with half hindered phenol main antioxidant |
| CN105949867A (en) * | 2016-06-17 | 2016-09-21 | 枞阳县新天地高新材料有限公司 | Nano bentonite wrapped type aluminum paste |
| CN106084899A (en) * | 2016-06-17 | 2016-11-09 | 枞阳县新天地高新材料有限公司 | A kind of nano ceramics cladded type aluminum paste |
| CN107837934A (en) * | 2017-10-24 | 2018-03-27 | 河南浩丰铝业科技发展有限公司 | A kind of aluminium silver oar Preparation equipment of high buoyancy, high brightness |
| 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 |
| CN116168897A (en) * | 2023-04-26 | 2023-05-26 | 四川铭世捷电子材料有限公司 | Preparation device and preparation method of air-soluble conductive silver paste |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537700A (en) * | 2012-12-31 | 2014-01-29 | 袁志刚 | Method for producing flaky aluminum powder coating |
| CN103627220A (en) * | 2013-12-12 | 2014-03-12 | 重庆诺泰颜料有限公司 | Preparation method of environment-friendly aluminium pigment |
| 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 |
| 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 |
| CN104341861A (en) * | 2014-10-25 | 2015-02-11 | 合肥旭阳铝颜料有限公司 | Low temperature resistant waterborne aluminum paste and preparation method thereof |
| CN104356762A (en) * | 2014-10-25 | 2015-02-18 | 合肥旭阳铝颜料有限公司 | Water and oil proofing water-based aluminum-silver pulp and preparation method thereof |
| CN104371426A (en) * | 2014-10-25 | 2015-02-25 | 合肥旭阳铝颜料有限公司 | Water-based aluminum paste for screen printing and preparation method thereof |
| CN105462370A (en) * | 2015-12-23 | 2016-04-06 | 天津利安隆新材料股份有限公司 | Aluminium paste composition added with half hindered phenol main antioxidant |
| CN105440812A (en) * | 2015-12-23 | 2016-03-30 | 天津利安隆新材料股份有限公司 | Thioester type auxiliary antioxidant-added aluminum paste composition |
| CN105440812B (en) * | 2015-12-23 | 2019-02-12 | 天津利安隆新材料股份有限公司 | A kind of aluminum paste composition adding thioesters auxiliary antioxidant |
| CN105462370B (en) * | 2015-12-23 | 2019-03-29 | 天津利安隆新材料股份有限公司 | A kind of aluminum paste composition adding half Hinered phenols primary antioxidant |
| CN105949867A (en) * | 2016-06-17 | 2016-09-21 | 枞阳县新天地高新材料有限公司 | Nano bentonite wrapped type aluminum paste |
| CN106084899A (en) * | 2016-06-17 | 2016-11-09 | 枞阳县新天地高新材料有限公司 | A kind of nano ceramics cladded type aluminum paste |
| CN107837934A (en) * | 2017-10-24 | 2018-03-27 | 河南浩丰铝业科技发展有限公司 | A kind of aluminium silver oar Preparation equipment of high buoyancy, high brightness |
| 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 |
| CN116168897A (en) * | 2023-04-26 | 2023-05-26 | 四川铭世捷电子材料有限公司 | Preparation device and preparation method of air-soluble conductive silver paste |
| CN116168897B (en) * | 2023-04-26 | 2023-09-12 | 四川铭世捷电子材料有限公司 | Preparation device and preparation method of air-soluble conductive silver paste |
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Application publication date: 20121128 |