CN104157322A - Aluminium powder/sericite powder composite conductive silver paste and preparation method thereof - Google Patents
Aluminium powder/sericite powder composite conductive silver paste and preparation method thereof Download PDFInfo
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- CN104157322A CN104157322A CN201410368690.6A CN201410368690A CN104157322A CN 104157322 A CN104157322 A CN 104157322A CN 201410368690 A CN201410368690 A CN 201410368690A CN 104157322 A CN104157322 A CN 104157322A
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Abstract
The invention discloses an aluminium powder/sericite powder composite conductive silver paste. The aluminium powder/sericite powder composite conductive silver paste is characterized by comprising the following raw materials in parts by weight: 40-50 parts of silver powder, 2-4 parts of aluminium powder, 1-3 parts of sericite powder, 2-3 parts of building rubbish, 1.2-2.5 parts of sodium thiosulfate, 2.1-3.6 parts of polyacrylonitrile carbon fiber, 2.3-4.2 parts of polyethylene glycol fatty acid ester, 3-5 parts of acrylic emulsion, 0.4-0.9 part of sodium nitrate, 0.5-0.8 part of calcium formate, 0.2-0.5 part of N-vinyl pyrrolidone, 30-40 parts of an assistant and appropriate amount of water. According to the composite conductive silver paste, as the aluminium powder is added and appropriate amount of the silver powder is reduced, the electric conductivity of the conductive silver paste is improved; when the conductive silver paste provided by the invention is screen-printed on a printing stock and the printing stock is sintered, the obtained metallic membrane layer is smooth and compact, the appearance is favorable and no blistering phenomenon or prill phenomenon occurs.
Description
Technical field
The present invention relates to conductive silver paste field, be specifically related to compound conductive silver paste of a kind of aluminium powder/sericite in powder and preparation method thereof.
Background technology
Conductive silver paste refers to and is printed on conduction stock, make it the silver slurry that there is conduction current and get rid of accumulate static charge ability, be to be generally imprinted on the non-conductive stocks such as plastics, glass, pottery or cardboard, it is comprised of electroconductive stuffing, binder, solvent and additive.The characteristic that conductive silver paste need to possess has: conductivity (antistatic behaviour) is good, strong adhesion, printing adaptability is good and the excellent characteristic of solvent resistance, and existing conductive silver paste has a lot of shortcomings in the market, not only contain lead, cadmium etc. and poisonous, contaminated environment, and adhesive force is low, soldering resistance is not good while using on conduction stock, sintering character is poor.
Summary of the invention
Object of the present invention is just to provide compound conductive silver paste of a kind of aluminium powder/sericite in powder and preparation method thereof, to overcome the deficiencies in the prior art.
The object of the present invention is achieved like this:
The conductive silver paste that a kind of aluminium powder/sericite in powder is compound, it is characterized in that, by the raw material of following weight portion, made: silver powder 40-50, aluminium powder 2-4, sericite in powder 1-3, building waste 2-3, sodium thiosulfate 1.2-2.5, polyacrylonitrile carbon fiber 2.1-3.6, cithrol 2.3-4.2, acrylic emulsion 3-5, sodium nitrate 0.4-0.9, calcium formate 0.5-0.8, NVP 0.2-0.5, auxiliary agent 30-40, suitable quantity of water.
Described auxiliary agent is made by following raw materials in part by weight: alundum (Al2O3) 2-3, boron oxide 3-5, polyvinyl alcohol 7-9, rosin 14-18,3-aminopropyl trimethoxysilane 1.2-2.4, dimethyl silicone polymer 0.3-0.4, acetone 9-14, cyclohexanone 7-10, its preparation method is alundum (Al2O3), boron oxide to be put into calciner at 520-610 ℃, calcine 1-2 hour, taking-up is cooled to room temperature, adds polyvinyl alcohol to grind 20-40 minute; Cyclohexanone, rosin are mixed, at 100-120 ℃, react 2-3 hour, be cooled to 40-50 ℃, add acetone, 3-aminopropyl trimethoxysilane, dimethyl silicone polymer, keep temperature to stir 3-4 hour; Above each product is mixed, grind and make 300-400 order slurry and get final product for 2-4 hour.
The preparation method of the conductive silver paste that described a kind of aluminium powder/sericite in powder is compound, is characterized in that comprising the following steps:
(1) get aluminium powder, sericite in powder and add suitable quantity of water and grind 1-2 hour, add sodium nitrate to continue to grind 30-40 minute, spraying is dry, puts into calciner sintering 1-2 hour at 450-510 ℃;
(2) get building waste and put into retort process 1-2 hour at 650-720 ℃, take out coolingly, add polyacrylonitrile carbon fiber, sodium thiosulfate to grind 2-3 hour, spray vaporific acrylic emulsion and mix;
(3) step (1), (2) reaction mass and other leftover materials are mixed, be warming up to 100-120 ℃, stirring reaction 1-2 hour, cooling, grinding to form particle diameter is 10-20 μ m slurry grain, obtains.
The present invention has following beneficial effect: the present invention adds aluminium powder, the appropriate amount that has reduced silver powder has improved the electric conductivity of conductive silver paste, by product silk screen printing of the present invention on stock and sintering after, the smooth densification of metallic diaphragm obtaining, outward appearance is good, without blistering phenomenon and metallic particles phenomenon.
Embodiment
The described compound conductive silver paste of a kind of aluminium powder/sericite in powder, it is characterized in that, by the raw material of following weight portion, made: silver powder 47, aluminium powder 2, sericite in powder 3, building waste 3, sodium thiosulfate 1.7, polyacrylonitrile carbon fiber 2.9, cithrol 3.4, acrylic emulsion 4, sodium nitrate 0.4, calcium formate 0.6, NVP 0.2, auxiliary agent 37, suitable quantity of water.
Described auxiliary agent is made by following raw materials in part by weight: alundum (Al2O3) 2, boron oxide 4, polyvinyl alcohol 7, rosin 15,3-aminopropyl trimethoxysilane 1.5, dimethyl silicone polymer 0.3, acetone 12, cyclohexanone 9, its preparation method is alundum (Al2O3), boron oxide to be put into calciner at 520-610 ℃, calcine 1-2 hour, taking-up is cooled to room temperature, adds polyvinyl alcohol to grind 20-40 minute; Cyclohexanone, rosin are mixed, at 100-120 ℃, react 2-3 hour, be cooled to 40-50 ℃, add acetone, 3-aminopropyl trimethoxysilane, dimethyl silicone polymer, keep temperature to stir 3-4 hour; Above each product is mixed, grind and make 300-400 order slurry and get final product for 2-4 hour.
Manufacture method comprises the following steps:
(1) get aluminium powder, sericite in powder and add suitable quantity of water and grind 1-2 hour, add sodium nitrate to continue to grind 30-40 minute, spraying is dry, puts into calciner sintering 1-2 hour at 450-510 ℃;
(2) get building waste and put into retort process 1-2 hour at 650-720 ℃, take out coolingly, add polyacrylonitrile carbon fiber, sodium thiosulfate to grind 2-3 hour, spray vaporific acrylic emulsion and mix;
(3) step (1), (2) reaction mass and other leftover materials are mixed, be warming up to 100-120 ℃, stirring reaction 1-2 hour, cooling, grinding to form particle diameter is 10-20 μ m slurry grain, obtains.
The technical indicator of processing the conductive silver paste obtaining by above-described embodiment is as follows:
(1) viscosity: 50-100PaS(Brookfield, 10RPM);
(2) adhesive force: > 10N/mm
2;
(3) plumbous cadmium content: < 100ppm;
(4) solderability excellent, burnt in a heap easily separated, printing adaptability good and solvent resistance is excellent.
Claims (2)
1. the conductive silver paste that aluminium powder/sericite in powder is compound, it is characterized in that, by the raw material of following weight portion, made: silver powder 40-50, aluminium powder 2-4, sericite in powder 1-3, building waste 2-3, sodium thiosulfate 1.2-2.5, polyacrylonitrile carbon fiber 2.1-3.6, cithrol 2.3-4.2, acrylic emulsion 3-5, sodium nitrate 0.4-0.9, calcium formate 0.5-0.8, NVP 0.2-0.5, auxiliary agent 30-40, suitable quantity of water; Described auxiliary agent is made by following raw materials in part by weight: alundum (Al2O3) 2-3, boron oxide 3-5, polyvinyl alcohol 7-9, rosin 14-18,3-aminopropyl trimethoxysilane 1.2-2.4, dimethyl silicone polymer 0.3-0.4, acetone 9-14, cyclohexanone 7-10, its preparation method is alundum (Al2O3), boron oxide to be put into calciner at 520-610 ℃, calcine 1-2 hour, taking-up is cooled to room temperature, adds polyvinyl alcohol to grind 20-40 minute; Cyclohexanone, rosin are mixed, at 100-120 ℃, react 2-3 hour, be cooled to 40-50 ℃, add acetone, 3-aminopropyl trimethoxysilane, dimethyl silicone polymer, keep temperature to stir 3-4 hour; Above each product is mixed, grind and make 300-400 order slurry and get final product for 2-4 hour.
2. the manufacture method of the compound conductive silver paste of a kind of aluminium powder/sericite in powder according to claim 1, is characterized in that comprising the following steps:
(1) get aluminium powder, sericite in powder and add suitable quantity of water and grind 1-2 hour, add sodium nitrate to continue to grind 30-40 minute, spraying is dry, puts into calciner sintering 1-2 hour at 450-510 ℃;
(2) get building waste and put into retort process 1-2 hour at 650-720 ℃, take out coolingly, add polyacrylonitrile carbon fiber, sodium thiosulfate to grind 2-3 hour, spray vaporific acrylic emulsion and mix;
(3) step (1), (2) reaction mass and other leftover materials are mixed, be warming up to 100-120 ℃, stirring reaction 1-2 hour, cooling, grinding to form particle diameter is 10-20 μ m slurry grain, obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410368690.6A CN104157322A (en) | 2014-07-30 | 2014-07-30 | Aluminium powder/sericite powder composite conductive silver paste and preparation method thereof |
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| CN201410368690.6A CN104157322A (en) | 2014-07-30 | 2014-07-30 | Aluminium powder/sericite powder composite conductive silver paste and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575664A (en) * | 2014-12-23 | 2015-04-29 | 合肥中南光电有限公司 | Electric conduction silver paste with high adhesive force |
| CN107274960A (en) * | 2017-05-03 | 2017-10-20 | 陶志斌 | Inorganic conductive electrode film and preparation method thereof |
| CN117352246A (en) * | 2023-12-05 | 2024-01-05 | 西安创联光电新材料有限公司 | High adhesion conductive aluminum paste for PTC thermistor |
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| JP2013122864A (en) * | 2011-12-12 | 2013-06-20 | Sumitomo Metal Mining Co Ltd | Composition for thick film conductor formation, and thick film conductor using the same and manufacturing method thereof |
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| US20140203224A1 (en) * | 2011-09-27 | 2014-07-24 | Tanaka Kikinzoku Kogyo K.K. | Electroconductive Particle and Metal Paste, and Electrode |
| JP2013122864A (en) * | 2011-12-12 | 2013-06-20 | Sumitomo Metal Mining Co Ltd | Composition for thick film conductor formation, and thick film conductor using the same and manufacturing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575664A (en) * | 2014-12-23 | 2015-04-29 | 合肥中南光电有限公司 | Electric conduction silver paste with high adhesive force |
| CN107274960A (en) * | 2017-05-03 | 2017-10-20 | 陶志斌 | Inorganic conductive electrode film and preparation method thereof |
| CN117352246A (en) * | 2023-12-05 | 2024-01-05 | 西安创联光电新材料有限公司 | High adhesion conductive aluminum paste for PTC thermistor |
| CN117352246B (en) * | 2023-12-05 | 2024-03-01 | 西安创联光电新材料有限公司 | High adhesion conductive aluminum paste for PTC thermistor |
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Application publication date: 20141119 |