CN103450742A - Environment-friendly aqueous conductive silver paste printing ink and preparation method thereof - Google Patents
Environment-friendly aqueous conductive silver paste printing ink and preparation method thereof Download PDFInfo
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- CN103450742A CN103450742A CN 201210171357 CN201210171357A CN103450742A CN 103450742 A CN103450742 A CN 103450742A CN 201210171357 CN201210171357 CN 201210171357 CN 201210171357 A CN201210171357 A CN 201210171357A CN 103450742 A CN103450742 A CN 103450742A
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Abstract
The invention discloses an environment-friendly aqueous conductive silver paste printing ink and a preparation method thereof. The preparation method comprises following steps: adopting superfine metal particles as the conductive stuffing material, and then adding glycol and tetrahydrofuran as the binding agent and dilution auxiliary agent so as to obtain the environment-friendly aqueous conductive silver paste printing ink capable of curing at the room temperature, wherein the silver particles disperse in the binding agent. Before the printing, the liquid binding agent makes the silver paste to form a printing material with a certain viscosity; after the printing, the particles in the silver paste form a stable combination with the substrate material through the curing of the binding agent. Tetrahydrofuran is adopted as the binding agent, is capable of forming a thermosetting plastic with a three-dimension net structure when reacting with a curing agent, the resin has the characteristics of small contraction rate during the curing reaction process, excellent cohesiveness, heat resistance, chemical drug resistance, mechanical performance, and electrical performance at the room temperature.
Description
Technical field
The present invention relates to conduct electricity the technical field of printing coatings, especially refer to a kind of environment-friendly water-based conductive silver paste printing ink and preparation method thereof.
Background technology
Along with the development of electronic technology, electronics has been proposed to light, thin, multi-functional, intellectuality and stepped on technical requirements, impel people to go the manufacturing technologies such as the more advanced inexpensive electronic devices and components of exploitation, circuit board.Conductive silver paste is the critical material with full printed electronics fabrication techniques printed circuit board, from technological trend, existing conductive silver paste exists the phenomenon of mechanical property and current carrier scarce capacity in the market, solidify at normal temperatures undesirable, and the disagreeableness defect of environment is existed, affect the quality of electronic product, to industrial production, bring many inconvenience.
Summary of the invention
A kind of environment-friendly water-based conductive silver paste printing ink of the present invention and preparation method thereof, the employing ultra-fine metallic particles is conductive filler material, adds ethylene glycol, tetrahydrofuran (THF) is linking agent and dilution auxiliary agent, get final product can be curing at normal temperatures the environment-friendly water-based conductive silver paste printing ink.
To achieve these goals, technical solution of the present invention is: the preparation of the first step, super fine silver powder: Silver Nitrate is dissolved in deionized water, more slowly adds as ammoniacal liquor, stop adding while making precipitation dissolving fully just, solution clarification, obtain silver ammino solution, add again ethylene glycol, make Yin An – ethylene glycol solution, Vc is dissolved in ionized water, slowly add Yin An – ethylene glycol solution to be stirred, isolate throw out, drying, obtain super fine silver powder; Second step, the preparation of waterborne conductive silver paste printing ink: epoxy resin is inserted in steel basin, add tetrahydrofuran (THF) to work as after resin dissolves fully and stop adding, super fine silver powder, in beaker, is stirred, get Micro Amount of Polyethylene Glycol and join in mixture, stir and obtain silver-colored slurry.
The present invention is in the waterborne conductive silver paste printing ink, and silver-colored particle is dispersed in and links in agent.Before printing, aqueous link agent makes the silver slurry form the seal material with certain viscosity; After printing, through linking curing the making of agent, between the silver-colored particulate of starching and base material, form stable bond.Link agent and adopt the tetrahydrofuran (THF) resin, when it reacts just and can form three-dimensional netted thermosetting resin with solidifying agent, it is little that this epoxy resin has in solidify reaction process shrinking percentage, the characteristics of the cohesiveness of cured article, thermotolerance, chemical proofing and mechanical property and excellent electrical properties.
Embodiment
Embodiment mono-:
1, the preparation of super fine silver powder:
1. appropriate Silver Nitrate is dissolved in 50 mL deionized waters, drips ammoniacal liquor, when produced precipitation is dissolved just fully, solution stops while clarifying dripping, obtain silver ammino solution.
2. add 50 mL ethylene glycol in above-mentioned silver ammino solution.
3. by Vc: the silver ions mol ratio is 1:2, and Vc is excess calculation Vc consumption slightly, and Vc is dissolved in 50 mL deionized waters, is added dropwise in Yin An – ethylene glycol solution, and stir on dropping limit, limit.
4. isolate throw out after dropwising, drying, obtain super fine silver powder.Silver powder is stored in moisture eliminator stand-by, obtained super fine silver powder is carried out to SEM, XRD test, show that gained silver powder is approximately high-purity, the monodisperse spherical super fine silver powder of 500 nm of median size, can prepare for conductive silver paste.
2, the preparation of conductive silver paste:
Take the epoxy resin of 50g in beaker, drip tetrahydrofuran (THF) with glue head dropper and enter beaker, drip simultaneously and stir, after resin dissolves fully, stop dripping, 50g self-control super fine silver powder, in beaker, stirs, get Micro Amount of Polyethylene Glycol and join in mixture, stir and obtain silver-colored slurry.
The above; embodiment is only that the preferred embodiment of the present invention is described; not scope of the present invention is limited; under the prerequisite of the spirit that does not break away from the technology of the present invention; various distortion and improvement that this area engineering technical personnel make technical scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (2)
1. environment-friendly water-based conductive silver paste printing ink and preparation method thereof, it is characterized in that: by ultra-fine metallic particles, be conductive filler material, add ethylene glycol, tetrahydrofuran (THF) is linking agent and dilution auxiliary agent, get final product can be curing at normal temperatures the environment-friendly water-based conductive silver paste printing ink.
2. a kind of environment-friendly water-based conductive silver paste printing ink according to claim 1 and preparation method thereof, it is characterized in that: preparation technology is as follows:
1., the preparation of super fine silver powder: Silver Nitrate is dissolved in deionized water, slowly add as ammoniacal liquor again, stop adding while making precipitation dissolving fully just, solution clarification, obtain silver ammino solution, then add ethylene glycol, make Yin An – ethylene glycol solution, Vc is dissolved in ionized water, slowly add Yin An – ethylene glycol solution to be stirred, isolate throw out, drying, obtain super fine silver powder;
2., waterborne conductive silver paste printing ink preparation: epoxy resin is inserted in steel basin, add tetrahydrofuran (THF) to work as after resin dissolves fully and stop adding, super fine silver powder, in beaker, is stirred, get Micro Amount of Polyethylene Glycol and join in mixture, stir and obtain silver-colored slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210171357 CN103450742A (en) | 2012-05-30 | 2012-05-30 | Environment-friendly aqueous conductive silver paste printing ink and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210171357 CN103450742A (en) | 2012-05-30 | 2012-05-30 | Environment-friendly aqueous conductive silver paste printing ink and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN103450742A true CN103450742A (en) | 2013-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201210171357 Pending CN103450742A (en) | 2012-05-30 | 2012-05-30 | Environment-friendly aqueous conductive silver paste printing ink and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115497664A (en) * | 2022-10-25 | 2022-12-20 | 苏州普耀光电材料有限公司 | Conductive silver paste resistant to environmental aging and preparation method thereof |
| CN116176063A (en) * | 2022-12-30 | 2023-05-30 | 杨际梅 | Heat-insulating modified asphalt non-curing waterproof coiled material, preparation method thereof and production line |
-
2012
- 2012-05-30 CN CN 201210171357 patent/CN103450742A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115497664A (en) * | 2022-10-25 | 2022-12-20 | 苏州普耀光电材料有限公司 | Conductive silver paste resistant to environmental aging and preparation method thereof |
| CN116176063A (en) * | 2022-12-30 | 2023-05-30 | 杨际梅 | Heat-insulating modified asphalt non-curing waterproof coiled material, preparation method thereof and production line |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131218 |