CN101935477A - Low-temperature conductive carbon paste and preparation method thereof - Google Patents
Low-temperature conductive carbon paste and preparation method thereof Download PDFInfo
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- CN101935477A CN101935477A CN 201010293057 CN201010293057A CN101935477A CN 101935477 A CN101935477 A CN 101935477A CN 201010293057 CN201010293057 CN 201010293057 CN 201010293057 A CN201010293057 A CN 201010293057A CN 101935477 A CN101935477 A CN 101935477A
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Abstract
The invention relates to low-temperature conductive carbon paste and a preparation method thereof. The conductive carbon paste is prepared from the following raw materials in percentage by weight: 24.8-30 percent of carbon powder, 5-10 percent of colloidal graphite, 64.8-70 percent of carrier and 0.2-1 percent of dispersant, and the preparation method comprises the steps of: by fully mixing the raw materials and then, grinding and dispersing 5-8 times (for 3-15 min perfor every kilogram every time) with a three-roll grinder so as to form an even mixed phase and obtain conductive carbon paste. The organic carrier is prepared by weighting the following raw materials in percentage by weight: 10-15 percent of solvent-type resin A, 10-15 percent of solvent-type resin B and 74.8-79.8 percent of solvent with a high boiling point, stirring at a high speed in a water bath to fully dissolve the resin in a solvent, adding 0.2-1 percent of coupling agent and evenly stirring. The invention enhances the compactness of the carbon paste structure, improves the conductive performance, and improves the physical performance of a coating, which and has excellent adhesion, refrangibility, abrasive resistance and hardness.
Description
Technical field
The present invention relates to a kind of low-temperature conductive carbon slurry and preparation method thereof.
Background technology
Conductive carbon paste is that the carbon with nonmetal conductor material is that particulate is distributed in thermoplastic resin and the electrically conductive ink made equably.After being heating and curing, the ink film layer is difficult for oxidation, stable performance; Acid-and base-resisting and solvent corrosion can play the effect of protection and conduction.The strong adhesion of printing ink, antistripping combines well with metal, glass-cloth board and VC, PET and PC sheet material.Suppose mutually that with conductive silver paste resistance is bigger, but with low cost, the cost performance height.
Conductive carbon paste is widely used in communication goods (mobile telephone), computer (notebook), portable type electronic product, consumer electronics, the network hardware (server etc.), Medical Instruments, domestic electronic appliances and electronicss such as space flight and national defence.Yet the conductivity of existing conductive carbon paste is not high.If the carbon slurry has better conductivity and physicals, then the carbon slurry has bigger using value.
Summary of the invention
The object of the present invention is to provide a kind of good low-temperature conductive ink, can be applicable to film key, printed resistor, heat generating component, flexible circuitry, joint line.
Another object of the present invention is to provide a kind of low-temperature conductive carbon slurry and preparation method thereof.
The objective of the invention is to be achieved through the following technical solutions, a kind of conductive carbon paste is characterized in that, this conductive carbon paste is formed by the feedstock production of following mass percentage content:
Carbon dust 24.8-30%;
Oildag 5-10%;
Carrier 64.8-70%;
Dispersion agent 0.2-1%.
Described carbon dust, radius are 0.1-12 μ m.
Described oildag, radius are 0.1-5 μ m.
Described carrier is formed by the feedstock production of following mass percentage content:
Solvent type resin A 10-15%;
Solvent type resin B 10-15%;
High boiling solvent 74.8-79.8%;
Coupling agent 0.2-1%.
Described solvent type resin A selects vibrin or polyurethane for use.
Described solvent type resin B selects acrylic resin for use.
Described high boiling solvent is diethylene adipate, 2-Butoxyethyl acetate or 1, a kind of in the 4-butyrolactone.
Described coupling agent is silane coupling A 150, A170 or A1719.
Described dispersion agent is a DA type dispersion agent.
The present invention gives the preparation method of this conductive carbon paste, and this method comprises the steps:
1) preparation organic carrier: the solvent type resin A of weighing mass percent 10-15%, 10-15% solvent type resin B, 74.8-79.8% high boiling solvent in 70-100 ℃ of water-bath high-speed stirring 2-5 hour make resin be dissolved in the solvent fully; The back adds the 0.2-1% coupling agent and stirs, and is stand-by;
2) carbon slurry: the material thorough mixing that 24.8-30% carbon dust, 5-10% oildag, 64.8-70% carrier and the weighing of 0.2-1% dispersion agent are finished, use three-roll grinder to disperse 5-8 time then according to one kilogram of every grinding all over 3-15 minute, make it to form uniform mixed phase, promptly get conductive carbon paste.
The present invention uses carbon dust and oildag combination, has increased the compactness of carbon slurry structure, can improve conductivity.Add coupling agent simultaneously, make powder and resin-bonded tightr, improve the coating physicals.Good sticking power is arranged, refrangibility wear resistance and hardness.
Embodiment
Below by specific embodiment the present invention is described in further detail.Need to prove that following embodiment only is used to illustrate the present invention, but be not limited to practical range of the present invention.
Unless otherwise indicated, the following raw material add-on that adopts of the present invention is mass percent.
Embodiment 1
Prepare carrier earlier:
Vibrin 12%;
Acrylic resin 12%;
Diethylene adipate 75.5%;
A150 0.5％；
By above mass percent weighing solvent type resin A vibrin, solvent type resin B acrylic resin, high boiling solvent diethylene adipate high-speed stirring 5 hours in 70 ℃ of water-baths, make resin be dissolved in the solvent fully; The back adds coupling agent A150 and stirs, and is standby;
Preparation carbon slurry:
Carbon dust 26%;
Oildag 7%;
Carrier 66.5%;
DA type dispersion agent 0.5%;
By above mass percent weighing carbon dust, oildag, carrier and DA type dispersion agent and thorough mixing, use three-roll grinder (SDV 1300, Switzerland's cloth are reined in) to grind then and disperse (one kilogram every all over 3 minutes) 5 times, make it to form uniform mixed phase, promptly get conductive carbon paste.
Embodiment 2
Prepare carrier earlier:
Vibrin 10%;
Acrylic resin 15%;
2-Butoxyethyl acetate 74.8%;
A170 0.2％；
By above mass percent weighing solvent type resin A vibrin, solvent type resin B acrylic resin, high boiling solvent 2-Butoxyethyl acetate high-speed stirring 3 hours in 90 ℃ of water-baths, make resin be dissolved in the solvent fully; The back adds coupling agent A170 and stirs, and is standby;
Preparation carbon slurry:
Carbon dust 30%;
Oildag 5%;
Carrier 64.8%;
DA type dispersion agent 0.2%;
By above mass percent weighing carbon dust, oildag, carrier and DA type dispersion agent and thorough mixing, use three-roll grinder (SDV 1300, Switzerland's cloth are reined in) to grind then and disperse (one kilogram every all over 5 minutes) 6 times, make it to form uniform mixed phase, promptly get conductive carbon paste.
Embodiment 3
Prepare carrier earlier:
Vibrin 15%;
Acrylic resin 10%;
1,4-butyrolactone 74.8%;
A171 0.2％；
By above mass percent weighing solvent type resin A vibrin, solvent type resin B acrylic resin, high boiling solvent 1,4-butyrolactone high-speed stirring 2 hours in 100 ℃ of water-baths makes resin be dissolved in the solvent fully; The back adds coupling agent A171 and stirs, and is standby;
Preparation carbon slurry:
Carbon dust 25%;
Oildag 8%;
Carrier 66%;
DA type dispersion agent 1%;
By above mass percent weighing carbon dust, oildag, carrier and DA type dispersion agent and thorough mixing, use three-roll grinder (SDV 1300, Switzerland's cloth are reined in) to grind then and disperse (one kilogram every all over 10 minutes) 8 times, make it to form uniform mixed phase, promptly get conductive carbon paste.
Embodiment 4
Prepare carrier earlier:
Polyurethane 13%;
Acrylic resin 11%;
Diethylene adipate 75%;
A150 1％；
By above mass percent weighing solvent type resin A polyurethane, solvent type resin B acrylic resin, high boiling solvent diethylene adipate high-speed stirring 3 hours in 80 ℃ of water-baths, make resin be dissolved in the solvent fully; The back adds coupling agent A150 and stirs, and is standby;
Preparation carbon slurry:
Carbon dust 24.8%;
Oildag 10%;
Carrier 65%;
DA type dispersion agent 0.2%;
By above mass percent weighing carbon dust, oildag, carrier and DA type dispersion agent and thorough mixing, use three-roll grinder (SDV 1300, Switzerland's cloth are reined in) to grind then and disperse (one kilogram every all over 8 minutes) 6 times, make it to form uniform mixed phase, promptly get conductive carbon paste.
Embodiment 5
Prepare carrier earlier:
Polyurethane 13%;
Acrylic resin 12.2%;
2-Butoxyethyl acetate 70%;
A1719 0.8％；
By above mass percent weighing solvent type resin A polyurethane, solvent type resin B acrylic resin, high boiling solvent 2-Butoxyethyl acetate high-speed stirring 5 hours in 70 ℃ of water-baths, make resin be dissolved in the solvent fully; The back adds coupling agent A1719 and stirs, and is standby;
Preparation carbon slurry:
Carbon dust 24.8%;
Oildag 5%;
Carrier 70%;
DA type dispersion agent 0.2%;
By above mass percent weighing carbon dust, oildag, carrier and DA type dispersion agent and thorough mixing, use three-roll grinder (SDV 1300, Switzerland's cloth are reined in) to grind then and disperse (one kilogram every all over 12 minutes) 8 times, make it to form uniform mixed phase, promptly get conductive carbon paste.
Embodiment 6
Prepare carrier earlier:
Polyurethane 10%;
Acrylic resin 10%;
1,4-butyrolactone 79.8%;
A170 0.2％；
By above mass percent weighing solvent type resin A polyurethane, solvent type resin B acrylic resin, high boiling solvent 1,4-butyrolactone high-speed stirring 4 hours in 85 ℃ of water-baths makes resin be dissolved in the solvent fully; The back adds coupling agent A170 and stirs, and is standby;
Preparation carbon slurry:
Carbon dust 26%;
Oildag 3%;
Carrier 70%;
DA type dispersion agent 1%;
By above mass percent weighing carbon dust, oildag, carrier and DA type dispersion agent and thorough mixing, use three-roll grinder (SDV 1300, Switzerland's cloth are reined in) to grind then and disperse (one kilogram every all over 15 minutes) 7 times, make it to form uniform mixed phase, promptly get conductive carbon paste.
Claims (10)
1. a conductive carbon paste is characterized in that, this conductive carbon paste is formed by the feedstock production of following mass percentage content:
Carbon dust 24.8-30%;
Oildag 5-10%;
Carrier 64.8-70%;
Dispersion agent 0.2-1%.
2. a kind of conductive carbon paste according to claim 1 is characterized in that, described carbon dust, radius are 0.1-12 μ m.
3. a kind of conductive carbon paste according to claim 1 is characterized in that, described oildag, radius are 0.1-5 μ m.
4. a kind of conductive carbon paste according to claim 1 is characterized in that, described carrier is formed by the feedstock production of following mass percentage content:
Solvent type resin A 10-15%;
Solvent type resin B 10-15%;
High boiling solvent 74.8-79.8%;
Coupling agent 0.2-1%.
5. a kind of conductive carbon paste according to claim 4 is characterized in that, described solvent type resin A selects vibrin or polyurethane for use.
6. a kind of conductive carbon paste according to claim 4 is characterized in that, described solvent type resin B selects acrylic resin for use.
7. a kind of conductive carbon paste according to claim 4 is characterized in that, described high boiling solvent is diethylene adipate, 2-Butoxyethyl acetate or 1, a kind of in the 4-butyrolactone.
8. a kind of conductive carbon paste according to claim 4 is characterized in that, described coupling agent is silane coupling A 150, A170 or A1719.
9. a kind of conductive carbon paste according to claim 1 is characterized in that, described dispersion agent is a DA type dispersion agent.
10. the preparation method of a kind of conductive carbon paste according to claim 1 is characterized in that, this method comprises the steps:
1) preparation organic carrier: the solvent type resin A of weighing mass percent 10-15%, 10-15% solvent type resin B, 74.8-79.8% high boiling solvent in 70-100 ℃ of water-bath high-speed stirring 2-5 hour make resin be dissolved in the solvent fully; The back adds the 0.2-1% coupling agent and stirs, and is stand-by;
2) carbon slurry: the material thorough mixing that 24.8-30% carbon dust, 5-10% oildag, 64.8-70% carrier and the weighing of 0.2-1% dispersion agent are finished, use three-roll grinder to disperse 5-8 time then according to one kilogram of every grinding all over 3-15 minute, make it to form uniform mixed phase, promptly get conductive carbon paste.
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| CN 201010293057 CN101935477A (en) | 2010-09-27 | 2010-09-27 | Low-temperature conductive carbon paste and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181250A (en) * | 2011-03-28 | 2011-09-14 | 彩虹集团公司 | Carbon black conductive adhesive and preparation method thereof |
| CN102329496A (en) * | 2011-06-30 | 2012-01-25 | 苏州新纶超净技术有限公司 | High-conductivity carbon slurry and preparation method thereof |
| CN102360587A (en) * | 2011-09-23 | 2012-02-22 | 苏州喜仁新材料科技有限公司 | Low-temperature halogen-free high-conductivity carbon paste and preparation method thereof |
| CN102443320A (en) * | 2011-10-18 | 2012-05-09 | 张文知 | Carbon water-based conductive ink |
| CN102858036A (en) * | 2012-08-27 | 2013-01-02 | 苏州喜仁新材料科技有限公司 | High-resistance low-temperature heating carbon paste and preparation method thereof |
| CN105244077A (en) * | 2015-11-04 | 2016-01-13 | 中国科学院宁波材料技术与工程研究所 | Conductive carbon paste and preparation method thereof |
| CN110364284A (en) * | 2019-04-16 | 2019-10-22 | 北京氦舶科技有限责任公司 | A kind of conductive silver paste organic carrier and preparation method thereof |
| CN112908514A (en) * | 2021-02-22 | 2021-06-04 | 苏州英纳电子材料有限公司 | Easy-to-wipe black carbon slurry and preparation method thereof |
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| CN101599313A (en) * | 2009-07-02 | 2009-12-09 | 张祥成 | A kind of hydrophobic and hydrophilic nano micron-sized microphase half-detached conductive carbon pastes and preparation method thereof |
| CN101696333A (en) * | 2009-10-27 | 2010-04-21 | 彩虹集团公司 | Conductive ink and preparation method thereof |
| CN101719392A (en) * | 2009-12-30 | 2010-06-02 | 内蒙古大学 | Preparation method of screen printing water-based conductive paste based on carbon-copper composite packing |
| CN101800090A (en) * | 2010-03-16 | 2010-08-11 | 彩虹集团公司 | Environmental-friendly conductive sizing agent and preparation method thereof |
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Patent Citations (5)
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| CN101314680A (en) * | 2007-05-30 | 2008-12-03 | 比亚迪股份有限公司 | Electrically-conducting paint, preparation method and uses thereof |
| CN101599313A (en) * | 2009-07-02 | 2009-12-09 | 张祥成 | A kind of hydrophobic and hydrophilic nano micron-sized microphase half-detached conductive carbon pastes and preparation method thereof |
| CN101696333A (en) * | 2009-10-27 | 2010-04-21 | 彩虹集团公司 | Conductive ink and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181250A (en) * | 2011-03-28 | 2011-09-14 | 彩虹集团公司 | Carbon black conductive adhesive and preparation method thereof |
| CN102329496A (en) * | 2011-06-30 | 2012-01-25 | 苏州新纶超净技术有限公司 | High-conductivity carbon slurry and preparation method thereof |
| CN102329496B (en) * | 2011-06-30 | 2012-10-10 | 苏州新纶超净技术有限公司 | High-conductivity carbon slurry and preparation method thereof |
| CN102360587A (en) * | 2011-09-23 | 2012-02-22 | 苏州喜仁新材料科技有限公司 | Low-temperature halogen-free high-conductivity carbon paste and preparation method thereof |
| CN102360587B (en) * | 2011-09-23 | 2013-01-02 | 苏州喜仁新材料科技有限公司 | Low-temperature halogen-free high-conductivity carbon paste and preparation method thereof |
| CN102443320A (en) * | 2011-10-18 | 2012-05-09 | 张文知 | Carbon water-based conductive ink |
| CN102858036A (en) * | 2012-08-27 | 2013-01-02 | 苏州喜仁新材料科技有限公司 | High-resistance low-temperature heating carbon paste and preparation method thereof |
| CN102858036B (en) * | 2012-08-27 | 2014-11-05 | 苏州喜仁新材料科技有限公司 | High-resistance low-temperature heating carbon paste and preparation method thereof |
| CN105244077A (en) * | 2015-11-04 | 2016-01-13 | 中国科学院宁波材料技术与工程研究所 | Conductive carbon paste and preparation method thereof |
| CN110364284A (en) * | 2019-04-16 | 2019-10-22 | 北京氦舶科技有限责任公司 | A kind of conductive silver paste organic carrier and preparation method thereof |
| CN112908514A (en) * | 2021-02-22 | 2021-06-04 | 苏州英纳电子材料有限公司 | Easy-to-wipe black carbon slurry and preparation method thereof |
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Open date: 20110105 |