CN1298039A - Zinc oxide whisker coated with metal layer - Google Patents
Zinc oxide whisker coated with metal layer Download PDFInfo
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- CN1298039A CN1298039A CN 99117402 CN99117402A CN1298039A CN 1298039 A CN1298039 A CN 1298039A CN 99117402 CN99117402 CN 99117402 CN 99117402 A CN99117402 A CN 99117402A CN 1298039 A CN1298039 A CN 1298039A
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- metal
- znow
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- zinc oxide
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Abstract
The zinc oxide whisker has on its surface at least one layer of metal or alloy layer in the required thickness of 10 nm to 10 microns. When forming composite material with metal base, the whisker has good compatibility with metal base and can raise the strength of composite metal base material. Compared with common zinc oxide whisker, the said whisker coated with metal or alloy layer has greatly raised conducting and magnetic performance and thus can be used widely in the production of polymer resin base and ceramic base composite material with specific requirement in conducting and magnetic performance.
Description
The invention belongs to the matrix material that ZnOw and metal form, particularly a kind of matrix material that coats one or more layers metal on the ZnOw surface.
ZnOw is a kind of single crystal, is forms such as single needle shape, three needle-likes or four needle-likes.In view of its form characteristics, now be applied to field of compound material, in metal-base composites, macromolecule resin based composites, ceramic matric composite, play strengthening and toughening, conduction and effects such as absorption hertzian wave, microwave and infrared rays.But because zinc oxide is a kind of metal oxide with semiconductor property, thus resistivity is higher, do not have magnetic, poor with the consistency of metallic matrix, this directly influences performance of composites, and the application of ZnOw is restricted.
The objective of the invention is to overcome the above-mentioned deficiency of ZnOw, a kind of ZnOw that is coated with metal layer is provided, to obtain a kind of both had good electrical conductivity, metallographic phase capacitive and magnetic property, the material that has the needle-like form again.
The object of the present invention is achieved like this: deposit metal in the ZnOw surface by thermolysis-vapour deposition or electroless plating or electrochemical method, thereby form the ZnOw that is coated with metal layer.
The ZnOw that is coated with metal layer provided by the invention, its surface is coated with a kind of pure metal or alloy layer at least, promptly can determine the kind and the number of plies of the metal that coated on the ZnOw surface as required, both can deposit a kind of pure metal or alloy and form single coating layer, the pure metal or the alloy that can deposit two or more again form the superpacket coating.The number of plies of pure metal or alloy layer and thickness determines as required, is generally 10 nanometers～10 micron.
Pure metal or alloy that the ZnOw surface is coated, theoretically, can select various pure metal or alloy for use, but the combined factors such as needs according to cost, manufacturability and metal matrix, polymeric resin matrix, ceramic matric composite are considered, pure metal is preferably selected Fe, Ni, Co, Cu, Ag, Zn, Sn, Ti and Cr for use, and alloy is preferably selected for use: the alloy that (1) above-mentioned two or more pure metal is formed; (2) above-mentioned one or more pure metal and boron or the alloy formed of phosphoric.
The ZnOw that is coated with metal layer provided by the invention is compared with ZnOw, has the following advantages:
1. when forming matrix material because its surface is coated with one or more metal levels, thereby with metallic matrix, consistency has obtained the essence improvement.
Since pure metal or alloy layer that its surface coated can determine as required, thereby can obtain the whisker that electroconductibility is strong, magnetic property is good, to satisfy the needs of Composite Preparation and production, scientific research.
Embodiment 1:
Present embodiment provides a kind of ZnOw that coats one deck pure iron, adopts thermolysis-vapour deposition process preparation, operates as follows:
1. ZnOw is put into atmosphere furnace, and make the ZnO whisker make three-dimensional vibrating.
2. in atmosphere furnace, feed iron carbonyl gas and N
2The concentration of iron carbonyl gas is controlled at about 30% in the mixed gas of gas, stove.
3. be heated to 250 ℃ of insulations about 30 minutes, the thermolysis of iron carbonyl gas, can obtain thickness is the ZnOw that the pure iron layer about 300 nanometers coats.
Embodiment 2:
Present embodiment provides a kind of ZnOw that coats one deck pure nickel, adopts thermolysis-vapour deposition process preparation, operates as follows:
1. ZnOw is put into atmosphere furnace, and make the ZnO whisker make three-dimensional vibrating.
2. in atmosphere furnace, feed nickel carbonyl gas and N
2The concentration of nickel carbonyl gas is controlled at about 50% in the mixed gas of gas, stove.
3. be heated to 350 ℃ of insulations about 20 minutes, the nickel carbonyl gas thermolysis can obtain thickness and be the pure nickel coating layer about 280 nanometers.
Embodiment 3:
Present embodiment provides a kind of ZnOw of the Ni/Cu of coating composite bed, adopts electrochemical production, operates as follows:
1. the ZnOw that will be coated with one deck pure nickel is packed in the wire netting, and the wire netting that ZnOw will be housed is then put into the conventional electrolysis copper plating bath.
2. energising copper electrowinning, current density is controlled at 0.5mA/cm
2, 30 ℃ ± 3 ℃ of electrolyte temperatures, electrolysis time is 5 minutes, the ZnOw that filter, washing can obtain being coated with Ni, Cu pure metal composite bed, wherein about 200 nanometers of the thickness of Cu layer.
Embodiment 4:
Present embodiment provides a kind of ZnOw of the Ni-Fe of coating alloy layer, adopts thermolysis-vapour deposition process preparation, operates as follows:
1) the ZnO whisker is put into atmosphere furnace, and make ZnO whisker three-dimensional vibrating.
2) in stove, feed the mixed gas of nickle carbonoxide, iron carbonyl and nitrogen, under 250 ℃ condition, can obtain the coating layer of layer of Ni-Fe alloy behind the 30min on ZnO whisker surface, the ratio of nickel and iron is optionally by the nickle carbonoxide in the mixed gas and the ratio control of iron carbonyl in the Ni-Fe alloy.
Embodiment 5:
Present embodiment provides a kind of ZnOw of the Ni-P of coating alloy layer, adopts the electroless plating method preparation, operates as follows:
1. will put into the chemical plating Mi-P alloy solution of forming by single nickel salt, inferior sodium phosphate, ammonium chloride through the ZnO whisker after the activation treatment, about pH=7.0.
2. can obtain the ZnO whisker that is coated with the Ni-P alloy layer in 20 minutes after-filtration of 50 ℃ of platings, washing back oven dry, the content of nickel, phosphorus is mainly by the control of forming of the chemical plating fluid of Ni-P alloy in the Ni-P alloy.
Claims (3)
1. a ZnOw that is coated with metal layer is characterized in that the ZnOw surface is coated with a kind of pure metal or alloy layer at least.
2. the ZnOw that is coated with metal layer according to claim 1, the thickness that it is characterized in that surface coated pure metal of ZnOw or alloy layer are 10 nanometers～10 micron.
3. the ZnOw that is coated with metal layer according to claim 1 and 2 is characterized in that:
(1) pure metal of coating zinc oxide whisker has Fe, Ni, Co, Cu, Ag, Zn, Sn, Ti and Cr,
(2) alloy of coating zinc oxide whisker is made up of above-mentioned two or more pure metal, also can be made up of with phosphorus or boron above-mentioned one or more pure metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99117402 CN1298039A (en) | 1999-12-01 | 1999-12-01 | Zinc oxide whisker coated with metal layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99117402 CN1298039A (en) | 1999-12-01 | 1999-12-01 | Zinc oxide whisker coated with metal layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1298039A true CN1298039A (en) | 2001-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99117402 Pending CN1298039A (en) | 1999-12-01 | 1999-12-01 | Zinc oxide whisker coated with metal layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1298039A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320176C (en) * | 2005-05-08 | 2007-06-06 | 西南交通大学 | Magnetic modified nanometer zinc oxide whiskers and production thereof |
| CN101899708A (en) * | 2010-07-23 | 2010-12-01 | 北京航空航天大学 | Tetrapod-like zinc oxide/ferrite film material and preparation method thereof |
| CN101634003B (en) * | 2009-08-28 | 2011-01-12 | 武汉理工大学 | Method for preparing titanium-coating silicon carbide whisker |
| CN101974740A (en) * | 2010-10-29 | 2011-02-16 | 北京矿冶研究总院 | Preparation method of zinc oxide whisker loaded copper and silver |
| CN102586881A (en) * | 2010-10-29 | 2012-07-18 | 北京矿冶研究总院 | Preparation method of zinc oxide whisker containing metal nickel copper |
| CN102838763A (en) * | 2012-09-14 | 2012-12-26 | 中国航空工业集团公司北京航空材料研究院 | Method for promoting conductivity of carbon fiber laminated composites by using conductive inorganic whiskers |
| CN111170654A (en) * | 2020-01-14 | 2020-05-19 | 温州市鹿城印染厂 | Surface modified glass fiber and preparation method and application thereof |
| CN117024868A (en) * | 2023-09-12 | 2023-11-10 | 安邦电气股份有限公司 | PTC heat tracing belt and preparation method thereof |
-
1999
- 1999-12-01 CN CN 99117402 patent/CN1298039A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320176C (en) * | 2005-05-08 | 2007-06-06 | 西南交通大学 | Magnetic modified nanometer zinc oxide whiskers and production thereof |
| CN101634003B (en) * | 2009-08-28 | 2011-01-12 | 武汉理工大学 | Method for preparing titanium-coating silicon carbide whisker |
| CN101899708A (en) * | 2010-07-23 | 2010-12-01 | 北京航空航天大学 | Tetrapod-like zinc oxide/ferrite film material and preparation method thereof |
| CN101974740A (en) * | 2010-10-29 | 2011-02-16 | 北京矿冶研究总院 | Preparation method of zinc oxide whisker loaded copper and silver |
| CN102586881A (en) * | 2010-10-29 | 2012-07-18 | 北京矿冶研究总院 | Preparation method of zinc oxide whisker containing metal nickel copper |
| CN102838763A (en) * | 2012-09-14 | 2012-12-26 | 中国航空工业集团公司北京航空材料研究院 | Method for promoting conductivity of carbon fiber laminated composites by using conductive inorganic whiskers |
| CN111170654A (en) * | 2020-01-14 | 2020-05-19 | 温州市鹿城印染厂 | Surface modified glass fiber and preparation method and application thereof |
| CN117024868A (en) * | 2023-09-12 | 2023-11-10 | 安邦电气股份有限公司 | PTC heat tracing belt and preparation method thereof |
| CN117024868B (en) * | 2023-09-12 | 2024-04-16 | 安邦电气股份有限公司 | PTC heat tracing belt and preparation method thereof |
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