CN103464779B - Method for adopting sliver-coated nano copper composite particles to prepare conductive ink - Google Patents

Method for adopting sliver-coated nano copper composite particles to prepare conductive ink Download PDF

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CN103464779B
CN103464779B CN201310399414.1A CN201310399414A CN103464779B CN 103464779 B CN103464779 B CN 103464779B CN 201310399414 A CN201310399414 A CN 201310399414A CN 103464779 B CN103464779 B CN 103464779B
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nano copper
solution
silver
conductive ink
copper
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CN103464779A (en
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李文江
支力
李伟
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Tianjin University of Technology
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Tianjin University of Technology
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Abstract

Disclosed is a method for adopting sliver-coated nano copper composite particles to prepare conductive ink. The method includes taking polyvinyl pyrrolidone as a protective agent; utilizing NaH2PO2 H2O to directly reduce a copper sulfate solution into nano copper particles; through a in-situ reduction-oxidation reaction of silver ions with metal copper on the surface of nano copper, directly adding a silver nitrate in a nano copper solution to synthetise sliver-coated nano copper composite particles; mixing the sliver-coated nano copper composite particles and glycerol and glycol reagents according to a certain proportion to obtain conductive ink. The method has the advantages that compared with the prior art, surface cleaning of copper powder is not needed, the ink preparation process is simple, and needed solvent is economical, easy to get and nontoxic; the process from preparation of materials to preparation of the conductive ink and the process of obtaining of a lead by means of writing and inkjet printing are performed in air, and no toxic drug is utilized, so that environmental friendliness is realized and the preparation process can be completed simply and conveniently.

Description

A kind ofly silver-colored clad nano copper compound particle is adopted to prepare the method for electrically conductive ink
Technical field
The present invention relates to the preparation technology of electrically conductive ink, particularly a kind ofly adopt silver-colored clad nano copper compound particle to prepare the method for electrically conductive ink.
Background technology
Along with the development of science and technology, electronic technology science with industry etc. every field be widely used, can be used as printing conductiving point or conducting wire electrically conductive ink shown great attention to.As conductive filler, silver powder has good electric conductivity and non-oxidizability, but expensive due to it, and cost is too high, is not suitable for industrially promoting.Copper powder also has good electric conductivity, and its low price, be therefore considered to silver powder best substitute, but copper is easily oxidized, which limits its use, and copper powder is made electrically conductive ink and carry out writing, sintering and must carry out in inert gas, this is just unfavorable for its operation.If at the coated one deck silver of Copper Powder Surface, make silver-colored coated copper powder, the oxidation resistance of copper nanoparticle can be improved like this, the good conductive properties of copper nanoparticle can be kept again, not only have both some performance of noble metal, and price is cheaper than single noble metal nano powder, so silver-colored clad nano copper compound particle has wide range of application.Patent of invention [CN1262043A] discloses a kind of method that displacement reaction prepares silver-colored coated copper powder, but it is mainly used in the preparation of antiseptic.Patent of invention [CN201210069139] discloses one L-AA and reduces silver nitrate, be deposited on the preparation method of the silver-colored copper facing powder of Copper Powder Surface, this just needs to activate Copper Powder Surface, clean, sensitization, and step is many, preparation process more complicated.Tang founding father etc., see electronic component and material, Vol.28No.9, adopts with displacement method reduction complexing silver ion, at copper powder particle surface deposition argent, but its complicated process of preparation and only have studied its non-oxidizability, do not study its electric conductivity further.General all with ready-made copper powder direct-reduction silver in the preparation technology of existing silver-colored coated copper powder, this cupric oxide just needing removing Copper Powder Surface to generate, and the silver-colored coated copper powder of synthesis and be prepared into ink process in can use toxic pharmaceuticals, have very major injury to human body and environment.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, thering is provided a kind of adopts silver-colored clad nano copper compound particle to prepare the method for electrically conductive ink, silver-colored clad nano copper compound particle prepared by the method has good antioxygenic property, and the electrically conductive ink that itself and glycerine, ethylene glycol reagent are mixed by a certain percentage is had good electric conductivity.
Technical scheme of the present invention:
Adopt silver-colored clad nano copper compound particle to prepare a method for electrically conductive ink, using polyvinylpyrrolidone (PVP) as protective agent, utilize NaH 2pO 2h 2copper-bath is directly reduced into nano copper particle by O, by the in-situ oxidation reduction reaction of the metallic copper on silver ion and Nanometer Copper surface, in Nanometer Copper solution, directly add liquor argenti nitratis ophthalmicus synthesize silver-colored clad nano copper compound particle, described silver-colored clad nano copper compound particle and glycerine, ethylene glycol reagent are mixed and made into electrically conductive ink by a certain percentage, specifically comprise the following steps:
1) by polyvinylpyrrolidone and NaH 2pO 2h 2o joins deionized water for stirring and dissolves wiring solution-forming A, by CuSO 45H 2o joins deionized water and joins middle stirring and dissolving and obtain copper-bath, in copper-bath, drip concentration be ammoniacal liquor to the pH value of 25wt% is 10 wiring solution-forming B, solution B is added in solution A and adds thermal agitation, redox reaction is carried out after 2 hours at temperature is 100-140 DEG C, mixed solution becomes rufous, can obtain nano copper particle solution;
2) above-mentioned obtained nano copper particle solution being carried out ultrasonic agitation makes it be uniformly dispersed, be that the liquor argenti nitratis ophthalmicus of 0.0068-0.0136g/ml to be added dropwise in nano copper particle solution stirring reaction half an hour by concentration, now solution colour becomes taupe, be separated synthetic and use ethanol eccentric cleaning 2-4 time, obtain silver-colored clad nano copper compound particle after drying, the silver-colored clad nano copper compound particle of preparation has good antioxygenic property;
3) add above-mentioned silver-colored clad nano copper compound particle after being mixed with glycerine by ethanol to carry out ultrasonic agitation and make it dissolve completely, obtained electrically conductive ink;
4) above-mentioned electrically conductive ink will be made to load in the neutral shaft of a writing brush, photo papers will be drawn as wire, then sinter at 150-180 DEG C of temperature, can target product be obtained.
Polyvinylpyrrolidone (PVP), NaH in described solution A 2pO 2h 2the amount ratio of O and deionized water is 1g:2g:100ml; CuSO in solution B 45H 2the amount ratio of O, deionized water and ammoniacal liquor is 1g:20ml:1ml; The mass ratio of solution A and solution B is 1:3.2-4.
The volume ratio of described ethanol and glycerine is 1:3, and in electrically conductive ink, the mass percent of silver-colored clad nano copper compound particle is 30-40%.
Advantage of the present invention is: compared with prior art, and the present invention does not need to carry out surface clean to copper powder, and preparation ink process is simple, and required solvent economy is easy to get and nontoxic; The present invention is prepared into preparation electrically conductive ink from material, and by writing, to obtain wire be all carry out in atmosphere for the mode of inkjet printing, and without the use of toxic pharmaceuticals, environmental friendliness, can complete preparation technology simply and easily.
Detailed description of the invention
Embodiment 1:
Silver-colored clad nano copper compound particle is adopted to prepare a method for electrically conductive ink, using polyvinylpyrrolidone (PVP) as protective agent, the NaH of utilization 2pO 2h 2copper-bath is directly reduced into nano copper particle by O, by the in-situ oxidation reduction reaction of the metallic copper on silver ion and Nanometer Copper surface, in Nanometer Copper solution, directly add liquor argenti nitratis ophthalmicus synthesize silver-colored clad nano copper compound particle, described silver-colored clad nano copper compound particle and glycerine, ethylene glycol reagent are mixed and made into electrically conductive ink by a certain percentage, specifically comprise the following steps:
1) by 0.4g polyvinylpyrrolidone and 0.8gNaH 2pO 2h 2o joins 40ml deionized water for stirring and dissolves wiring solution-forming A, by 0.5gCuSO 45H 2o adds 10ml deionized water and is mixed with copper-bath, in copper-bath, drip concentration be ammoniacal liquor to the pH value of 25wt% is 10 wiring solution-forming B, solution B is added in solution A and adds thermal agitation, react 2 hours at temperature is 100 DEG C, solution becomes rufous, can obtain nano copper particle solution;
2) above-mentioned obtained nano copper particle solution being carried out ultrasonic agitation makes it be uniformly dispersed, be that the liquor argenti nitratis ophthalmicus of 0.0068g/ml to be added dropwise in nano copper particle solution stirring reaction half an hour by concentration, now solution colour becomes taupe, be separated synthetic and use ethanol eccentric cleaning 3 times, after drying, obtaining silver-colored clad nano copper compound particle;
3) add above-mentioned silver-colored clad nano copper compound particle after being mixed with volume ratio 1:3 with glycerine by ethanol to carry out ultrasonic agitation and make it dissolve completely, in electrically conductive ink, the mass percent of silver-colored clad nano copper compound particle is 40% obtained electrically conductive ink;
4) above-mentioned electrically conductive ink will be made to load in the neutral shaft of a writing brush, photo papers will be drawn as wire, then sinter at 160 DEG C of temperature, can target product be obtained.
Detection shows: obtained electrically conductive ink has good electric conductivity.
Embodiment 2:
Adopt silver-colored clad nano copper compound particle to prepare a method for electrically conductive ink, specifically comprise the following steps:
1) by 0.4g polyvinylpyrrolidone and 0.8gNaH 2pO 2h 2o joins 40ml deionized water for stirring and dissolves wiring solution-forming A, by 0.5gCuSO 45H 2o adds 10ml deionized water and is mixed with copper-bath, in copper-bath, drip concentration be ammoniacal liquor to the pH value of 25wt% is 10 wiring solution-forming B, solution B is added in solution A and adds thermal agitation, react 2 hours at temperature is 120 DEG C, solution becomes rufous, can obtain nano copper particle solution;
2) above-mentioned obtained nano copper particle solution being carried out ultrasonic agitation makes it be uniformly dispersed, be that the liquor argenti nitratis ophthalmicus of 0.0136g/ml to be added dropwise in nano copper particle solution stirring reaction half an hour by concentration, now solution colour becomes taupe, be separated synthetic and use ethanol eccentric cleaning 3 times, after drying, obtaining silver-colored clad nano copper compound particle;
3) add above-mentioned silver-colored clad nano copper compound particle after being mixed with volume ratio 1:3 with glycerine by ethanol to carry out ultrasonic agitation and make it dissolve completely, in electrically conductive ink, the mass percent of silver-colored clad nano copper compound particle is 30% obtained electrically conductive ink;
4) above-mentioned electrically conductive ink will be made to load in the neutral shaft of a writing brush, photo papers will be drawn as wire, then sinter at 170 DEG C of temperature, can target product be obtained.
Detection shows: obtained electrically conductive ink has good electric conductivity.

Claims (3)

1. adopt silver-colored clad nano copper compound particle to prepare a method for electrically conductive ink, it is characterized in that: using polyvinylpyrrolidone as protective agent, utilize NaH 2pO 2h 2copper-bath is directly reduced into nano copper particle by O, by the in-situ oxidation reduction reaction of the metallic copper on silver ion and Nanometer Copper surface, in Nanometer Copper solution, directly add liquor argenti nitratis ophthalmicus synthesize silver-colored clad nano copper compound particle, described silver-colored clad nano copper compound particle and glycerine, ethylene glycol reagent are mixed and made into electrically conductive ink by a certain percentage, specifically comprise the following steps:
1) by polyvinylpyrrolidone and NaH 2pO 2h 2o joins deionized water for stirring and dissolves wiring solution-forming A, by CuSO 45H 2o joins deionized water for stirring dissolving and obtains copper-bath, in copper-bath, drip concentration be ammoniacal liquor to the pH value of 25wt% is 10 wiring solution-forming B, solution B is added in solution A and adds thermal agitation, redox reaction is carried out after 2 hours at temperature is 100-140 DEG C, mixed solution becomes rufous, can obtain nano copper particle solution;
2) above-mentioned obtained nano copper particle solution being carried out ultrasonic agitation makes it be uniformly dispersed, be that the liquor argenti nitratis ophthalmicus of 0.0068-0.0136g/ml to be added dropwise in nano copper particle solution stirring reaction half an hour by concentration, now solution colour becomes taupe, be separated synthetic and use ethanol eccentric cleaning 2-4 time, obtain silver-colored clad nano copper compound particle after drying, the silver-colored clad nano copper compound particle of preparation has good antioxygenic property;
3) add above-mentioned silver-colored clad nano copper compound particle after being mixed with glycerine by ethanol to carry out ultrasonic agitation and make it dissolve completely, obtained electrically conductive ink;
4) above-mentioned electrically conductive ink is loaded in the neutral shaft of a writing brush, photo papers is drawn as wire, then sinter at 150-180 DEG C of temperature, can target product be obtained.
2. adopt silver-colored clad nano copper compound particle to prepare the method for electrically conductive ink according to claim 1, it is characterized in that: polyvinylpyrrolidone, NaH in described solution A 2pO 2h 2the amount ratio of O and deionized water is 1g:2g:100ml; CuSO in solution B 45H 2the amount ratio of O, deionized water and ammoniacal liquor is 1g:20ml:1ml; The mass ratio of solution A and solution B is 1:3.2-4.
3. adopt silver-colored clad nano copper compound particle to prepare the method for electrically conductive ink according to claim 1, it is characterized in that: the volume ratio of described ethanol and glycerine is 1:3, in electrically conductive ink, the mass percent of silver-colored clad nano copper compound particle is 30-40%.
CN201310399414.1A 2013-09-05 2013-09-05 Method for adopting sliver-coated nano copper composite particles to prepare conductive ink Expired - Fee Related CN103464779B (en)

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CN104754875B (en) * 2015-03-08 2018-01-23 北京化工大学 The preparation method of copper@silver metal conducting films and its application on a printed circuit board
CN104946022B (en) * 2015-07-10 2018-03-16 东北大学 A kind of high stability agranular type silver base conductive ink and preparation method thereof
CN105598468B (en) * 2016-03-17 2018-05-15 中国科学院深圳先进技术研究院 A kind of preparation method of wicker copper nano particle available for electrically conductive ink
CN105903980A (en) * 2016-05-16 2016-08-31 深圳市微纳集成电路与***应用研究院 Copper nanometer powder and preparation method thereof as well as silver-coated copper powder and preparation method thereof
KR101789213B1 (en) * 2016-06-03 2017-10-26 (주)바이오니아 Method of Manufacturing Silver-Coated Copper Nano Wire Having Core-Shell Structure by Chemical Reduction Method
CN107983970A (en) * 2017-11-24 2018-05-04 电子科技大学 A kind of preparation method of Cu-Ag Nanoalloys
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CN108176849B (en) * 2017-12-12 2020-01-17 南京邮电大学 Silver-coated copper nano powder and preparation method and application thereof
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