CN1418818A - Tech. for prepn. of nano zinc oxide powder - Google Patents
Tech. for prepn. of nano zinc oxide powder Download PDFInfo
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- CN1418818A CN1418818A CN 02157963 CN02157963A CN1418818A CN 1418818 A CN1418818 A CN 1418818A CN 02157963 CN02157963 CN 02157963 CN 02157963 A CN02157963 A CN 02157963A CN 1418818 A CN1418818 A CN 1418818A
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- microwave drying
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Abstract
The present invention relates to a preparation process of nano ZnO powder, it adopts precipitation method and microwave drying method, and is characterized by that it adopts zinc chloride and oxalate precipitate, and makes said precipitate undergo thep rocesses of normal temp. heating reaction, precipitation, dehydration, microwave drying (its temp. is 110 deg.C) and calcination its calcination temp. is 350-450 deg.C so as to obtain the invented ZnO nano powder.
Description
The present invention relates to the technology of preparing of nano ZnO powder, be specifically related to technology of preparing, preparation technology and method that precipitator method method for microwave drying prepares the ZnO powder, its feature comprises that adopting zinc chloride and oxalic acid to react generates the sedimentary processing method of zinc oxalate dihydrate.
ZnO is a purposes functional materials very widely, is used for important industrial technology Application Areass such as electronics, coating, catalysis, gas sensitive device and varistor device in a large number.ZnO is a compound semiconductor, and when the size of material reached nanometer quantity, owing to have important constitutional featuress such as quantum confined effect, dimensional effect, surface effects, its physical property was in the common material difference.Based on above reason, in recent years, the preparation of nano-ZnO becomes the focus of field of nano material preparation.
The precipitator method are preparation nano ZnO powder a kind of synthetic methods commonly used, have the advantage that cost is low, equipment simply, easily amplifies suitability for industrialized production.Adopt this method, can obtain grain-size only is the nano ZnO powder of 10nm, good dispersity.ZnO is mainly used to make transmitter, fluor, UV-preventing material (very strong extinction ability being arranged in whole 200～400 nano-ultraviolet light districts), varistor, image recording material, piezoelectric, piezoresistor, effective catalyst, magneticsubstance and plastics film etc.The vulcanization activator and the strengthening agent that also can be used as natural rubber, synthetic rubber and latex.Also be commonly used for the mineralizer in the ceramic industry.Also have been widely used at industrial trades such as coating, medicine, printing ink, papermaking, enamel, glass, match, chemical industry and makeup in addition.Figure of description is seen in technical process.
The object of the present invention is to provide that a kind of equipment is simple, technical process weak point, less investment, cost are low, the novel process of the preparation of production nano ZnO powder commonly used the most.
Technical characterstic of the present invention: it is how to reduce it to reunite that the precipitator method prepare nano ZnO powder more topmost, and the present invention adopts that microwave drying reduces that it is reunited, the speed of the starting point concentration by the control reaction soln, precipitin reaction, add dispersion agent to ZnC
2O
42H
2The O solution reaction obtains presoma zinc oxalate dihydrate precipitation.
The present invention will be described further by following new preparation process:
Above-mentioned reaction solution is added respectively in the clean stainless steel reactor, stirring reaction, normal temperature reacted 2 hours down, generated white precipitate zinc oxalate dihydrate (ZnC
2O
42H
2O).
Reaction solution is filtered.Filter residue with deionized water rinsing for several times after, in vacuum drying oven, carry out drying, drying temperature is 110 ℃.
Dried zinc oxalate dihydrate was calcined 0.5～2 hour down in 350～450 ℃ in oxygen atmosphere, obtained white (or faint yellow) nano zine oxide.
Claims (2)
1. the technology of preparing of a nano-powder is characterized in that taking the precipitator method and method for microwave drying.
2. according to claims 1 described precipitator method, method for microwave drying, technology of preparing, preparation technology and the method for preparation ZnO powder, its feature comprise that adopting zinc chloride and oxalic acid to react generates the sedimentary processing method of zinc oxalate dihydrate.Normal temperature reacting by heating precipitation, dehydration, microwave drying, high-temperature calcination make powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02157963 CN1418818A (en) | 2002-12-23 | 2002-12-23 | Tech. for prepn. of nano zinc oxide powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02157963 CN1418818A (en) | 2002-12-23 | 2002-12-23 | Tech. for prepn. of nano zinc oxide powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1418818A true CN1418818A (en) | 2003-05-21 |
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Family Applications (1)
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| CN 02157963 Pending CN1418818A (en) | 2002-12-23 | 2002-12-23 | Tech. for prepn. of nano zinc oxide powder |
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| CN (1) | CN1418818A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8142743B2 (en) | 2009-06-25 | 2012-03-27 | Industrial Technology Research Institute | Method and apparatus for forming zinc oxide |
| CN102070182B (en) * | 2009-11-21 | 2012-08-22 | 中国科学院合肥物质科学研究院 | Porous zinc oxide micro powder and preparation method and application thereof |
| CN105271363A (en) * | 2015-08-14 | 2016-01-27 | 南京华狮化工有限公司 | Preparation method of superfine zinc oxide powder |
| CN106277033A (en) * | 2016-08-03 | 2017-01-04 | 广西大学 | A kind of microwave-assisted prepares the method for nano ZnO material |
| CN107331536A (en) * | 2017-07-21 | 2017-11-07 | 张娟 | A kind of utilization microwave expansion method prepares the preparation method that graphene sheet layer loads nanometer nickle composite powder |
-
2002
- 2002-12-23 CN CN 02157963 patent/CN1418818A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8142743B2 (en) | 2009-06-25 | 2012-03-27 | Industrial Technology Research Institute | Method and apparatus for forming zinc oxide |
| CN102070182B (en) * | 2009-11-21 | 2012-08-22 | 中国科学院合肥物质科学研究院 | Porous zinc oxide micro powder and preparation method and application thereof |
| CN105271363A (en) * | 2015-08-14 | 2016-01-27 | 南京华狮化工有限公司 | Preparation method of superfine zinc oxide powder |
| WO2017075990A1 (en) * | 2015-08-14 | 2017-05-11 | 南京华狮新材料有限公司 | Method for preparing superfine zinc oxide powder |
| CN106277033A (en) * | 2016-08-03 | 2017-01-04 | 广西大学 | A kind of microwave-assisted prepares the method for nano ZnO material |
| CN107331536A (en) * | 2017-07-21 | 2017-11-07 | 张娟 | A kind of utilization microwave expansion method prepares the preparation method that graphene sheet layer loads nanometer nickle composite powder |
| CN107331536B (en) * | 2017-07-21 | 2019-03-15 | 张娟 | A kind of preparation method preparing graphene sheet layer load nanometer nickle composite powder using microwave expansion method |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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