CN104112916A - Grounding body based on nano-conductive corrosion resistant coating - Google Patents
Grounding body based on nano-conductive corrosion resistant coating Download PDFInfo
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- CN104112916A CN104112916A CN201410112165.8A CN201410112165A CN104112916A CN 104112916 A CN104112916 A CN 104112916A CN 201410112165 A CN201410112165 A CN 201410112165A CN 104112916 A CN104112916 A CN 104112916A
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Abstract
The invention discloses a grounding body based on a nano-conductive corrosion resistant coating which comprises a steel bar grounding body coated with a graphene coating. One end of a steel bar (1) is a cone. A graphene layer (2) is prepared on the steel bar (1). The graphene layer (2) is used as a conductive corrosion resistant coating to be used in a grounding body. According to the nano-conductive corrosion resistant grounding body, the surface of the steel grounding body is directly coated with multiple layers of graphene. Precious metal (such as copper, nickel, etc.) is replaced with the graphene material grown on the surface of the steel metal to prepare the corrosion resistant conductive grounding body, or graphene is used to cover the steel surface so as to raise antioxidant ability of the steel bar grounding body. Graphene, used as a unique two-dimensional nano-film, has good structural properties, physical properties and chemical properties. The graphene material is used as a coating to be used on the surface of the grounding body such that the metal grounding body has excellent characteristics such as high oxidation resistance, corrosion resistance, good conductivity, high mechanical strength, wear resistance and the like. From the perspective of production costs, the graphene coating requires a simple preparation technology, has low cost, and is an ideal material for replacing precious metal.
Description
Technical field
The present invention relates to a kind of earth electrode based on conductive nano corrosion-resistant coating, especially conduct electricity the electrically-conducting paint using in anticorrosive earthing device.
Background technology
The important leverage of electric power system safe operation and high-tech testing weak signals power ground.Ground connection and guard technology are problems very important in International Power academic research.Now widely used earth electrode is mainly steel rod, copper plating steel rod and zinc-plated steel rod, earth electrode inserts underground approximately 2.5 meters, after generally using 3-5 years, earth electrode surface metal-layer can present corrosion in various degree, cause earth resistance to increase, even earthing effect is lost, and causes potential safety hazard.Especially, along with the demand of Testing of Feeble Signals in the increase of current industrial power capacity and high-tech technology with day increase, because earth electrode occurs repeatedly in underground safety and the technical error causing that be corroded for a long time.For the effectively generation of such accident of containment, development of new conduction anti-corrosive paints becomes instant work in current earth work.Current existing conductive anti-corrosion coating is mainly the coating such as nano-sized carbon or nickel powder, and Nano graphite powder easily damaged antiseptic property that makes in dry solidification process reduces, and the too thin surface of nickel powder particle is oxidized, thereby affects earth electrode surface conductance performance.
Grapheme material is the material receiving much concern at present, has the conduction property of graphite and good lubricated, corrosion-resistant, high-temperature stability.Research shows, Graphene is the highest material of intensity in the middle of the material of finding at present; This material can by high strength, high temperature resistant and conduction excellent specific property take in the middle of composite material, thereby can design and prepare high-performance composite materials.Grapheme material has very excellent anticorrosion properties simultaneously, and Graphene can make metal surface corrosion resistance strengthen decades of times.Research shows, is prepared Graphene and is closely attached to copper surface by chemical gaseous phase depositing process, tests corrosion resistance in salt solution, and result shows that copper surface corrosion-resistant erosion property has improved nearly 100 times than untreated, has extended the useful life of metal greatly.In view of grapheme material has good mechanical performance and high-intensity performance, can firmer and anti-damage as coating.Therefore, for earth electrode surface, make metal earth electrode possess stronger anti-oxidant, resistance to corrosion using grapheme material as coating, good conductivity, the good characteristics such as mechanical strength is high, wear-resistant.Consider from cost of manufacture, Graphene preparation technology of coating is simple, with low cost, is the ideal material that substitutes noble metal.
At present, Graphene has been applied for patent of invention (application number 201310300323.8 and application number 201210066163.0) as a kind of corrosion-resisting film and anticorrosive paint composite material.Aspect earth electrode, can see and only have Nano graphite powder for anticorrosion application (application number 201220675957.2).And also do not have for earth electrode Graphene as conductive anti-corrosion coating.
Summary of the invention
A kind of method that the object of the invention is to propose conductive nano anti-corrosive paints and be applied to earth electrode, can effectively improve the resistance to corrosion of earth electrode and keep excellent conductive performance, and with low cost.For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
The invention provides a kind of earth electrode based on conductive nano corrosion-resistant coating, comprise the steel rod earth electrode that is coated with Graphene coating, one of the rod iron of described steel rod (1) is cone, on described steel rod (1), prepare graphene layer (2), described graphene layer (2) is used for earth electrode as conductive anti-corrosion coating.The anticorrosive earth electrode of the present invention's conductive nano provided by the invention, directly rare at steel earth electrode surface-coated Multi-layer graphite, utilize steel metal surface growing graphene material substitution noble metal (as copper, nickel etc.) to prepare anti-corrosion electric conducting earth electrode, or cover with Graphene the oxidation resistance that improves rod iron earth electrode on steel surface.Graphene, as the two-dimensional nano film with a kind of uniqueness, has good architectural characteristic, physical characteristic and chemical characteristic.Carbon atom in Graphene is pressed hexagonal lattice and is arranged, the C atom of SP2 hydridization all forms saturated bond, therefore Graphene has excellent physical characteristic, under room temperature, its resistivity is about 10-6 Ω .cm, higher than the metal such as aluminium, copper, utilize can grow arbitrarily in the metal surface Graphene of individual layer or multilayer of chemical vapor deposition method, and between Graphene and metal, have stronger Van der Waals force, Graphene and metlbond are good, difficult drop-off.The present invention for earth electrode surface, makes metal earth electrode possess stronger anti-oxidant, resistance to corrosion using grapheme material as coating, good conductivity, the good characteristics such as mechanical strength is high, wear-resistant.Consider from cost of manufacture, Graphene preparation technology of coating is simple, with low cost, is the ideal material that substitutes noble metal.
The invention has the beneficial effects as follows:
1, conductivity is good, and the resistivity under Graphene room temperature is about 10-6 Ω .cm, can bear the current density up to 108A/cm2, and therefore Graphene-steel composites structure has good conductive capability
2, corrosion resistance is good, and the C atom of Graphene Sp2 hydridization all forms saturated bond, therefore has higher chemical stability, is difficult for being corroded.
3, with low cost, the primary raw material of Graphene is the gases such as methane, ethene, acetylene, and preparation technology is simple, and therefore the cost of Graphene-copper compound structure is far below copper steel or nickel steel material.
4, not easy to wear, Graphene has higher mechanical strength, and breaking strength can reach 40N/m, and between Graphene, coefficient of friction is less.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and coordinate accompanying drawing to be described in detail as follows.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is that the earth electrode based on conductive nano corrosion-resistant coating connects structural representation;
Number in the figure explanation: (1) steel rod; (2) Graphene coating.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Shown in Fig. 1, a kind of earth electrode based on conductive nano corrosion-resistant coating, it is characterized in that: comprise the steel rod earth electrode that is coated with Graphene coating, one of the rod iron of described steel rod (1) is cone, on described steel rod (1), prepare graphene layer (2), described graphene layer (2) is used for earth electrode as conductive anti-corrosion coating.
For seeing, further provide the preparation method of the anticorrosive earth electrode of a kind of conductive nano in conjunction with actual making of the present invention, preparation technology is as follows:
1. the preparation of steel earth electrode:
The customizable a collection of steel earth rod of the first step, 2-3 centimetres of diameters, length 200-250 centimetre, one of rod iron is tapered, is convenient to impact insertion underground, as shown in Figure 1;
Second step utilizes chemical vapour deposition technique on above-mentioned steel rod (1), to prepare graphene layer (2);
The 3rd step is utilized chemical vapour deposition technique, prepares graphene layer (2) on above-mentioned steel earth electrode surface.The carbon source using can be the gases such as methane, ethene, acetylene, and reaction assist gas is hydrogen and argon gas, and wherein hydrogen plays reduction, and argon gas shields.Basic process is as follows: in reaction, pass into hydrogen and argon gas, hydrogen is removed the oxide of metal surface for reducing, and argon gas shields.When temperature is raised to the first stage (600-1100 DEG C), insulation a period of time, then pass into the carbon sources such as methane, ethene or acetylene.Carbon source can be decomposed under high temperature action, under the catalytic action of metal, is grown to serve as Graphene in metal surface.The composite construction that so just can form Graphene coated metal rod iron, then equitemperature drops to room temperature, and Graphene-steel rod composite construction is taken out from reacting furnace.
Illustrate the present invention with embodiment below, but these embodiment should not be interpreted as limitation of the present invention.
Taking Graphene-steel rod earth electrode as example:
1 customization steel rod (1), one of rod iron is cone, clean rod iron surface.Utilize acetone and ethanol etc. to dispose the impurity of metal surface, comprise oxide and various surface organic matter.
2 prepare graphene layer (2) on steel rod (1); Utilize chemical vapour deposition technique, on steel rod (1), prepare graphene layer (2).The carbon source using is methane, and the assist gas in reaction is hydrogen and argon gas, and wherein hydrogen plays reduction, and argon gas shields;
Technique tube furnace put into by the steel rod (1) after surface treatment by 3;
4 pass into hydrogen and argon gas (hydrogen flowing quantity 30sccm, argon flow amount 550sccm), make in stove and heating up gradually, make temperature in stove rise to 1000 DEG C by room temperature after 45 minutes;
5 in the time of 1000 DEG C, make furnace temperature keep constant temperature 10 minutes, and rod iron is carried out to annealing in process.6 pass into methane (flow 10sccm) 3 minutes, then make boiler tube cooling;
7 after boiler tube is cooled to room temperature, takes out sample.
Above-described embodiment is not intended to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention, can do various variations and retouching, as steel rod (1) in addition, can also be copper, nickel or Cu-Ni alloy.
Claims (1)
1. the earth electrode based on conductive nano corrosion-resistant coating, it is characterized in that: one of the rod iron of described steel rod (1) is cone, on described steel rod (1), prepare graphene layer (2), described graphene layer (2) is used for earth electrode as conductive anti-corrosion coating.
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| CN201410112165.8A CN104112916A (en) | 2014-03-25 | 2014-03-25 | Grounding body based on nano-conductive corrosion resistant coating |
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| CN201410112165.8A CN104112916A (en) | 2014-03-25 | 2014-03-25 | Grounding body based on nano-conductive corrosion resistant coating |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123232A (en) * | 2016-11-29 | 2018-06-05 | 国网河南省电力公司安阳供电公司 | It is a kind of that there is conductive anticorrosive grounding body and preparation method thereof |
| CN108250722A (en) * | 2018-01-09 | 2018-07-06 | 江苏金合益复合新材料有限公司 | A kind of corrosion-resistant grounding resistance-reducing connection accessory |
| CN109524867A (en) * | 2018-11-30 | 2019-03-26 | 南宁安普电力设备有限公司 | A kind of compound rapid grounding system installation method of graphene |
| CN111969340A (en) * | 2020-07-20 | 2020-11-20 | 成都富利通科技有限公司 | Composite lightning protection grounding system |
| CN114898915A (en) * | 2022-05-31 | 2022-08-12 | 四川华丰科技股份有限公司 | Circuit wire, manufacturing method of circuit wire and connector |
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| CN102354821A (en) * | 2011-08-31 | 2012-02-15 | 陕西电力科学研究院 | Preparation method for corrosion-resistant metallic composite grounding body |
| CN102730671A (en) * | 2012-06-14 | 2012-10-17 | 天津大学 | Copper-graphene composite material and method for preparation of graphene film on copper-based metal surface |
| KR101262360B1 (en) * | 2013-02-28 | 2013-05-08 | 제룡산업 주식회사 | Conductive high sensitivity earth electrode |
| CN203013286U (en) * | 2012-12-05 | 2013-06-19 | 新昌县人通电力技术有限公司 | Nanometer carbon anticorrosion conductive grounding wire |
| CN103208685A (en) * | 2013-04-12 | 2013-07-17 | 北京大学 | Corrosion-resistant electrode and manufacturing method and application thereof |
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Patent Citations (5)
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| CN102354821A (en) * | 2011-08-31 | 2012-02-15 | 陕西电力科学研究院 | Preparation method for corrosion-resistant metallic composite grounding body |
| CN102730671A (en) * | 2012-06-14 | 2012-10-17 | 天津大学 | Copper-graphene composite material and method for preparation of graphene film on copper-based metal surface |
| CN203013286U (en) * | 2012-12-05 | 2013-06-19 | 新昌县人通电力技术有限公司 | Nanometer carbon anticorrosion conductive grounding wire |
| KR101262360B1 (en) * | 2013-02-28 | 2013-05-08 | 제룡산업 주식회사 | Conductive high sensitivity earth electrode |
| CN103208685A (en) * | 2013-04-12 | 2013-07-17 | 北京大学 | Corrosion-resistant electrode and manufacturing method and application thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123232A (en) * | 2016-11-29 | 2018-06-05 | 国网河南省电力公司安阳供电公司 | It is a kind of that there is conductive anticorrosive grounding body and preparation method thereof |
| CN108123232B (en) * | 2016-11-29 | 2020-04-21 | 国网河南省电力公司安阳供电公司 | Grounding body with conductive and corrosion-resistant functions and preparation method thereof |
| CN108250722A (en) * | 2018-01-09 | 2018-07-06 | 江苏金合益复合新材料有限公司 | A kind of corrosion-resistant grounding resistance-reducing connection accessory |
| CN108250722B (en) * | 2018-01-09 | 2020-09-22 | 江苏金合益复合新材料有限公司 | Corrosion-resistant grounding resistance-reducing connecting fitting |
| CN109524867A (en) * | 2018-11-30 | 2019-03-26 | 南宁安普电力设备有限公司 | A kind of compound rapid grounding system installation method of graphene |
| CN111969340A (en) * | 2020-07-20 | 2020-11-20 | 成都富利通科技有限公司 | Composite lightning protection grounding system |
| CN114898915A (en) * | 2022-05-31 | 2022-08-12 | 四川华丰科技股份有限公司 | Circuit wire, manufacturing method of circuit wire and connector |
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Application publication date: 20141022 |