CN1772706A - Prepn process of nanometer tin oxide material with surface decorating silver - Google Patents
Prepn process of nanometer tin oxide material with surface decorating silver Download PDFInfo
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- CN1772706A CN1772706A CN 200510015575 CN200510015575A CN1772706A CN 1772706 A CN1772706 A CN 1772706A CN 200510015575 CN200510015575 CN 200510015575 CN 200510015575 A CN200510015575 A CN 200510015575A CN 1772706 A CN1772706 A CN 1772706A
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- tin oxide
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- oxide powder
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Abstract
The present invention relates to the preparation process of nanometer tin oxide material with surface decorating silver, and belongs to the field of electric contact material preparing technology. The preparation process includes the following steps: adding tin oxide powder of 20-30 nm size into anhydrous ethanol and adding polyglycol as dispersant; ultrasonic stirring at room temperature and stoving; adding the treated nanometer tin oxide powder into 10-30 % concentration silver nitrate solution via electromagnetic and ultrasonic stirring for homogeneous dispersion; adding reductant hydrazine hydrate to reduce silver ion and obtain silver coated nanometer tin oxide powder and stoving at 80-120 deg.c. The present invention has the advantages of simple technological process and being suitable for industrial production, and the surface decorated nanometer tin oxide may be used in producing electric contact with excellent mechanical performance and high conductivity.
Description
Technical field
The present invention relates to a kind of nano tin dioxide preparation methods of surface decorating silver, belongs to the technology of preparing of electric contact material.
Background technology
The surface modification technology of nanoparticle is an emerge science, it is structure and the state that changes nano-particle surface with physics, chemical process, thereby give the new characteristic of particulate and its rerum natura (as granularity, flowability, electrical specification etc.) is improved, realize the control of people nano-particle surface.Ag-SnO
2Contact material is a kind of novel nontoxic electrical contact material, and it has Heat stability is good, anti-arc erosion and resistance fusion welding energy, is the ideal material that replaces deleterious Agcdo at present in contactor, rly. and switch.But Ag and SnO
2Wettability poor, cause material plasticity and poor ductility, be difficult for to draw moulding; Secondly because SnO
2Separate with Ag under arcing, be enriched in contact surface, the contact resistance of material is increased, electric life reduces, and has limited Ag-SnO
2Apply.Therefore finishing is to preparation nanometer Ag-SnO
2Electrical contact material has significance
Summary of the invention
The object of the present invention is to provide a kind of method of nano oxidized tin material of surface decorating silver, this method technology is simple, and preparation cost is low, makes excellent material performance.
The present invention is realized that by following technical proposals a kind of nano tin dioxide preparation methods of surface decorating silver is characterized in that comprising following process:
1. the dispersion treatment of stannic oxide powder: the stannic oxide powder of 20～30nm is added in the dehydrated alcohol, add dispersion agent polyoxyethylene glycol 0.8%～.5%ml by every gram stannic oxide powder then; At room temperature adopt ultrasonic stirring to handle 4～8 hours, stand-by after 80～12 ℃ of oven dry.
2. the electroless plating of nano oxidized tin powder is handled:
Nano tin dioxide after step 1 dispersion treatment adds in the deionized water, and adding mass concentration according to every gram nano tin dioxide is that 10～30% volume is the silver nitrate solution of 1～3ml, with the stirring 20～30 minutes that combines of induction stirring and ultrasonic wave, makes SnO
2[Ag (NH
3)
2] be uniformly dispersed; Add reductive agent hydrazine hydrate (H by every gram nano tin dioxide
2NNH
2* H
2O) 0.2～2ml makes silver ion reduction, obtains the nano oxidized tin powder of coated with silver, then 80～120 ℃ of oven dry handle goods.
Major advantage of the present invention is: (1) the present invention is by the nano oxidized tin powder of dispersion treatment, the dispersity height, even particle size, nano-scale is little, helping nano powder is evenly distributed in the material, thereby the reduction contact resistance improves the anti-melting welding of contact, the ability of anti-electrical arc erosion, and then improves the electric use properties of contact.(2) the present invention uses chemical plating method that stannic oxide powder is handled; This kind technology can obtain the nano oxidized tin powder of silver-colored electroless plating, and this chemical plating method composition is accurate, interface binding power is strong, can obtain the good silver-tin contact material of disperse effect by follow-up powder metallurgical technique.(3) the present invention is applied to surface modification technology in the electrical contact material, thereby reduces surface contacted resistance, improves the stability of electrical contact material, prolongs the work-ing life of electrical equipment.Used processing method is simple, is suitable for industrial-scale production.
Description of drawings
The electromicroscopic photograph of the nano oxidized tin powder that Fig. 1 makes through dispersion treatment for the embodiment of the invention 1 the first step.
Fig. 2 for the embodiment of the invention 1 second step through patina be coated with the electromicroscopic photograph of nano oxidized tin powder.
Embodiment
Embodiment 1
(1) dispersion treatment
The SnO of particle diameter 20～30 nanometers with preparation
250 grams are put into container, add 100 milliliters of dehydrated alcohols, and adding the 0.4ml surfactant polyethylene again is dispersion agent, put into power and be the ultrasonic wave dispersion treatment 4 hours of 2000W, and are stand-by after 100 ℃ of oven dry.
(2) the electroless plating treatment process of nano oxidized tin powder
Nano tin dioxide after the dispersion treatment 50 gram is put into distilled water, and adding mass concentration is 20% silver nitrate solution solution 15ml, and the method that combines with vibration in induction stirring and the ultrasonic wave allows nano tin dioxide and [Ag (NH
3)
2]
+Be uniformly dispersed, stirred 30 minutes; Add 20ml reductive agent hydrazine hydrate (H
2NNH
2* H
2O) make silver ion reduction, obtain the nano oxidized tin powder of coated with silver, then through 80 ℃ of dry goods that get.
(3) the nano oxidized tin powder after the finishing is mixed with weight percent 90:10 with silver powder, make Ag-SnO
2Electrical contact material.
Following table is Ag-SnO before and after the finishing
2The contrast of contact mechanical property and physicals.By finishing Ag-SnO
2The hardness of contact has improved 16%, and tensile strength has improved 50%, and unit elongation has improved 100%, and specific conductivity improves 23%.The physical and mechanical properties of material obviously improves.
Ag-SnO before and after the finishing
2The physical and mechanical properties of contact material
| Performance | Hardness (HV) (MPa) | Tensile strength (MPa) | Unit elongation (%) | Specific conductivity IACS |
| The Ag-SnO of finishing not 2Ag-SnO after the finishing 2 | 1100 1280 | 189 284 | 12 24 | 66 81 |
Embodiment 2
(1) dispersion treatment
Particle diameter 20-30 nano tin dioxide 80 gram of preparation is put into container, add 200 milliliters of dehydrated alcohols, adding the 1.2ml surfactant polyethylene again is dispersion agent, puts into power and be the ultrasonic wave dispersion treatment 6 hours of 2000W, stand-by after 80 ℃ of oven dry.
(2) the electroless plating treatment process of nano oxidized tin powder
Nano tin dioxide after the dispersion treatment 80 gram is put into distilled water, and adding mass concentration is 30% silver nitrate solution solution 30ml, and the method that combines with vibration in induction stirring and the ultrasonic wave allows nano tin dioxide and [Ag (NH
3)
2]
+Be uniformly dispersed, stirred 30 minutes; Add 60ml reductive agent hydrazine hydrate (H
2NNH
2* H
2O) make silver ion reduction, obtain the nano oxidized tin powder of coated with silver, then through 100 ℃ of dry goods that get.
Embodiment 3
(1) dispersion treatment
Particle diameter 20-30 nano tin dioxide 20 gram of preparation is put into container, add 200 milliliters of dehydrated alcohols, adding the 0.24ml surfactant polyethylene again is dispersion agent, puts into power and be the ultrasonic wave dispersion treatment 4 hours of 2000W, stand-by after 120 ℃ of oven dry.
(2) the electroless plating treatment process of nano oxidized tin powder
Nano tin dioxide after the dispersion treatment 20 gram is put into distilled water, and adding mass concentration is 30% silver nitrate solution solution 20ml, and the method that combines with vibration in induction stirring and the ultrasonic wave allows nano tin dioxide and [Ag (NH
3)
2]
+Be uniformly dispersed, stirred 20 minutes; Add 40ml reductive agent hydrazine hydrate (H
2NNH
2* H
2O) make silver ion reduction, obtain the nano oxidized tin powder of coated with silver, then through 100 ℃ of dry goods that get.
Claims (1)
1. the nano tin dioxide preparation methods of a surface decorating silver is characterized in that comprising following process:
1) dispersion treatment of stannic oxide powder: the stannic oxide powder of 20～30nm is added in the dehydrated alcohol, add dispersion agent polyoxyethylene glycol 0.8%～1.5%ml by every gram stannic oxide powder then; At room temperature adopt ultrasonic stirring to handle 4～8 hours, stand-by after 80～12 ℃ of oven dry;
2) electroless plating of nano oxidized tin powder is handled: the nano tin dioxide after the step 1) dispersion treatment adds in the deionized water, adding mass concentration according to every gram nano tin dioxide is that 10～30% volume is the silver nitrate solution of 1～3ml, combine with induction stirring and ultrasonic wave and to stir 20～30 minutes, make SnO
2[Ag (NH
3)
2] be uniformly dispersed; Add reductive agent hydrazine hydrate 0.2～2ml by every gram nano tin dioxide again, make silver ion reduction, obtain the nano oxidized tin powder of coated with silver, then 80～120 ℃ of oven dry handle goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510015575 CN1772706A (en) | 2005-10-24 | 2005-10-24 | Prepn process of nanometer tin oxide material with surface decorating silver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510015575 CN1772706A (en) | 2005-10-24 | 2005-10-24 | Prepn process of nanometer tin oxide material with surface decorating silver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1772706A true CN1772706A (en) | 2006-05-17 |
Family
ID=36759868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510015575 Pending CN1772706A (en) | 2005-10-24 | 2005-10-24 | Prepn process of nanometer tin oxide material with surface decorating silver |
Country Status (1)
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| CN (1) | CN1772706A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507074C (en) * | 2007-02-02 | 2009-07-01 | 广东工业大学 | Compounded conducting mix and silver coating Fe*O* powder and preparation method thereof |
| CN102282110A (en) * | 2009-01-19 | 2011-12-14 | 科诺科菲利浦公司 | Producing coated graphitic anode powders by extracting pitch from high volatile matter coke and coating the same in-situ |
| CN102432974A (en) * | 2011-09-05 | 2012-05-02 | 同济大学 | Polymer vesica with antibacterial nano silver deposited on surface and preparation method thereof |
| CN102528055A (en) * | 2012-02-13 | 2012-07-04 | 中国科学院宁波材料技术与工程研究所 | Preparation method for silver and stannic oxide composite powder and application thereof |
| CN102633499A (en) * | 2012-04-28 | 2012-08-15 | 东莞市中一合金科技有限公司 | Preparation method of silver tin oxide or silver tin oxide and indium oxide material |
| CN102683050A (en) * | 2012-05-04 | 2012-09-19 | 温州宏丰电工合金股份有限公司 | Preparation method of nano Ag-SnO2 electric contact composite |
| CN103978201A (en) * | 2014-06-05 | 2014-08-13 | 黑龙江大学 | Method for conducting nano-silver modification on tin dioxide nanorods through microwave assisting |
| CN105039767A (en) * | 2015-08-07 | 2015-11-11 | 西安工程大学 | Method for preparing silver tin oxide electrical contact alloy |
| CN105112706A (en) * | 2015-08-07 | 2015-12-02 | 西安工程大学 | Preparation method of silver zinc oxide contact alloy |
| CN105215351A (en) * | 2015-10-09 | 2016-01-06 | 中国船舶重工集团公司第七一二研究所 | A kind of silver-colored coated fin oxide condutire powder and preparation method thereof |
| CN106077702A (en) * | 2016-07-29 | 2016-11-09 | 佛山市诺普材料科技有限公司 | A kind of optimization cladding process of AgMeO composite granule |
| CN106098421A (en) * | 2016-08-05 | 2016-11-09 | 雷春生 | A kind of compound electric apparatus contact material of strong electric property and preparation method thereof |
| CN106564938A (en) * | 2016-10-26 | 2017-04-19 | 上海纳米技术及应用国家工程研究中心有限公司 | Ag-modified SnO2 nano-material for gas sensor as well as preparation method and application of Ag-modified SnO2 nano-material |
| CN109675555A (en) * | 2019-01-31 | 2019-04-26 | 山东师范大学 | A kind of Nano semiconductor hetero-junctions SnO2@M (M=Ag, Au, Pt) and preparation method thereof, application |
| CN110092412A (en) * | 2019-05-09 | 2019-08-06 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method for gas sensor CuO-Ag modification stannic oxide nano material and products thereof and application |
-
2005
- 2005-10-24 CN CN 200510015575 patent/CN1772706A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507074C (en) * | 2007-02-02 | 2009-07-01 | 广东工业大学 | Compounded conducting mix and silver coating Fe*O* powder and preparation method thereof |
| CN102282110A (en) * | 2009-01-19 | 2011-12-14 | 科诺科菲利浦公司 | Producing coated graphitic anode powders by extracting pitch from high volatile matter coke and coating the same in-situ |
| CN102282110B (en) * | 2009-01-19 | 2013-11-13 | 科诺科菲利浦公司 | Producing coated graphitic anode powders by extracting pitch from high volatile matter coke and coating the same in-situ |
| CN102432974B (en) * | 2011-09-05 | 2015-02-18 | 同济大学 | Polymer vesica with antibacterial nano silver deposited on surface and preparation method thereof |
| CN102432974A (en) * | 2011-09-05 | 2012-05-02 | 同济大学 | Polymer vesica with antibacterial nano silver deposited on surface and preparation method thereof |
| CN102528055A (en) * | 2012-02-13 | 2012-07-04 | 中国科学院宁波材料技术与工程研究所 | Preparation method for silver and stannic oxide composite powder and application thereof |
| CN102528055B (en) * | 2012-02-13 | 2013-12-04 | 中国科学院宁波材料技术与工程研究所 | Preparation method for silver and stannic oxide composite powder and application thereof |
| CN102633499A (en) * | 2012-04-28 | 2012-08-15 | 东莞市中一合金科技有限公司 | Preparation method of silver tin oxide or silver tin oxide and indium oxide material |
| CN102683050A (en) * | 2012-05-04 | 2012-09-19 | 温州宏丰电工合金股份有限公司 | Preparation method of nano Ag-SnO2 electric contact composite |
| CN102683050B (en) * | 2012-05-04 | 2014-11-19 | 温州宏丰电工合金股份有限公司 | Preparation method of nano Ag-SnO2 electric contact composite |
| CN103978201A (en) * | 2014-06-05 | 2014-08-13 | 黑龙江大学 | Method for conducting nano-silver modification on tin dioxide nanorods through microwave assisting |
| CN105039767A (en) * | 2015-08-07 | 2015-11-11 | 西安工程大学 | Method for preparing silver tin oxide electrical contact alloy |
| CN105112706A (en) * | 2015-08-07 | 2015-12-02 | 西安工程大学 | Preparation method of silver zinc oxide contact alloy |
| CN105215351A (en) * | 2015-10-09 | 2016-01-06 | 中国船舶重工集团公司第七一二研究所 | A kind of silver-colored coated fin oxide condutire powder and preparation method thereof |
| CN106077702B (en) * | 2016-07-29 | 2018-11-20 | 佛山市诺普材料科技有限公司 | A kind of optimization cladding process of AgMeO composite granule |
| CN106077702A (en) * | 2016-07-29 | 2016-11-09 | 佛山市诺普材料科技有限公司 | A kind of optimization cladding process of AgMeO composite granule |
| CN106098421A (en) * | 2016-08-05 | 2016-11-09 | 雷春生 | A kind of compound electric apparatus contact material of strong electric property and preparation method thereof |
| CN106564938A (en) * | 2016-10-26 | 2017-04-19 | 上海纳米技术及应用国家工程研究中心有限公司 | Ag-modified SnO2 nano-material for gas sensor as well as preparation method and application of Ag-modified SnO2 nano-material |
| CN106564938B (en) * | 2016-10-26 | 2018-06-12 | 上海纳米技术及应用国家工程研究中心有限公司 | A kind of Ag for gas sensor modifies SnO2Nano material and preparation and application |
| CN109675555A (en) * | 2019-01-31 | 2019-04-26 | 山东师范大学 | A kind of Nano semiconductor hetero-junctions SnO2@M (M=Ag, Au, Pt) and preparation method thereof, application |
| CN110092412A (en) * | 2019-05-09 | 2019-08-06 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method for gas sensor CuO-Ag modification stannic oxide nano material and products thereof and application |
| CN110092412B (en) * | 2019-05-09 | 2021-12-03 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of CuO-Ag modified tin oxide nano material for gas sensor, product and application thereof |
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