CN1866409A - Long-lasting grounding anti-corrosion resistance reduction agent (modified type) - Google Patents
Long-lasting grounding anti-corrosion resistance reduction agent (modified type) Download PDFInfo
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- CN1866409A CN1866409A CN 200610092963 CN200610092963A CN1866409A CN 1866409 A CN1866409 A CN 1866409A CN 200610092963 CN200610092963 CN 200610092963 CN 200610092963 A CN200610092963 A CN 200610092963A CN 1866409 A CN1866409 A CN 1866409A
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- oxide
- corrosion
- reducing agent
- graphite
- resistance reducing
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- 238000005260 corrosion Methods 0.000 title description 15
- 230000005923 long-lasting effect Effects 0.000 title 1
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 12
- 239000010439 graphite Substances 0.000 claims abstract description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910000278 bentonite Inorganic materials 0.000 claims description 7
- 239000000440 bentonite Substances 0.000 claims description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 7
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 5
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 5
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 5
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 230000005611 electricity Effects 0.000 abstract description 2
- 230000001603 reducing effect Effects 0.000 abstract description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- 230000002421 anti-septic effect Effects 0.000 abstract 1
- 230000003628 erosive effect Effects 0.000 abstract 1
- 238000004080 punching Methods 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229940080314 sodium bentonite Drugs 0.000 description 6
- 229910000280 sodium bentonite Inorganic materials 0.000 description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- 229940092782 bentonite Drugs 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- NLQRBBZCMARQKH-UHFFFAOYSA-M [O-2].[O-2].[O-2].[OH-].[Na+].[Al+3].[K+].[Ca+2] Chemical compound [O-2].[O-2].[O-2].[OH-].[Na+].[Al+3].[K+].[Ca+2] NLQRBBZCMARQKH-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UCSUOYMTZRJAIH-UHFFFAOYSA-N iron(2+) oxygen(2-) titanium(4+) Chemical compound [O-2].[O-2].[Ti+4].[Fe+2] UCSUOYMTZRJAIH-UHFFFAOYSA-N 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001139 pH measurement Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention discloses a long-acting ground antiseptic resistance-reducing agent (modified), which is characterized by the following: consisting of sodium base alta-mud and graphite; making each item of parameter satisfy all index; keeping resistance property stable under multitime industrial frequency and punching electricity action; protecting ground metal; reducing erosion rate from 0.0245 mm per year to 0.0064 mm per year.
Description
Technical field
The invention belongs to the physics resistance reducing agent, relate to a kind of long service life, corrosion-proof, and electric resistance reducing agent for earthing (modified model) that reduces the power equipment earth resistance, prevents the earth electrode corrosion, it is applied in the system of electric power, post and telecommunications, oil, railway, skyscraper, computer, telephone room and other employing ground network.
Background technology
In order to reduce the earth resistance of power equipment, the ground connection that makes power equipment under normal circumstances, a situation arises for accident down and under the thunderbolt situation, and the earth potential of power equipment installation place is fixing in allowed limits, to guarantee the safety of the person and equipment.Since the disclosed CN1062888C long service life, corrosion-proof, and electric resistance reducing agent for earthing launch products, because its resistance-reducing performance excellence is highly commended by customers deeply.Though conduct electricity very well but its weak point is the potassium chloride that adds in its composition, bury ground after, As time goes on its Corrosion Protection to the ground connection metallic object is relatively poor.
Summary of the invention
The objective of the invention is to address the above problem, provide a kind of electric conductivity better, the long service life, corrosion-proof, and electric resistance reducing agent for earthing (modified model) that corrosion resistance is more excellent.
The inventor is through repetition test repeatedly, research, selected for use electric conductivity better, the more excellent a kind of nonmetal breeze graphite of corrosion resistance substitutes potassium chloride in the former invention and makes it long service life, corrosion-proof, and electric resistance reducing agent for earthing to fall the resistance decay resistance after improving better, so propose following technical scheme: a kind of long service life, corrosion-proof, and electric resistance reducing agent for earthing (modified model), it is made up of bentonite and graphite, wherein each weight percentages of components is: bentonite 50-99%, graphite 1-50% contains silica in the bentonite, titanium oxide, iron oxide, aluminium oxide, calcium oxide, potassium oxide, sodium oxide molybdena.The weight percent content of each essential element is as shown in table 1 in the bentonite.
Table 1
| Composition | Silica | Titanium oxide | Iron oxide | Aluminium oxide | Calcium oxide | Potassium oxide | Sodium oxide molybdena |
| Content (%) | 40-70％ | 0.01-3％ | 0.5-9％ | 2-20％ | 1-7％ | 0.1-6％ | 1-6％ |
The effect of each composition is respectively: silica has extremely strong suction, water holding capacity, be mainly used in and store electrolyte and moisture, and higher expansion character is arranged, can make resistance reducing agent closely wrap the metal earth electrode, starvation plays the unpolarizing that stops oxygen to the intrusion of earth electrode; Titanium oxide can keep the stability of resistance reducing agent except that possessing electric action; Sodium oxide molybdena, potassium oxide etc. are active metal oxide, have good electric conductivity, can reduce the industrial frequency electric resistance rate greatly; Calcium oxide, iron oxide, aluminium oxide etc. have stronger moisture absorption, form the jelly of crystalloid or crystallization defective mode, in the expansion that takes place under water and other the material effect between crystal, enlarged the contact-making surface of earth electrode and the earth, improve the compaction rate that earth electrode contacts with the earth, thereby reduced earth resistance.Simultaneously, the colloid that it forms can prevent the evaporation of moisture and the loss of conductive materials, and this is the main cause that keeps long-acting.Graphite: its fixed carbon content is 60-99%.Graphite is a kind of nonmetallic mineral that has good electric conductivity and have stronger decay resistance, its chemical property is more stable, have higher electric stability and high osmosis, can around the soil electrode, form infiltration area widely, to all pressing advantageous particularly, it is the scalable pH value also, makes it be slightly larger than 7, and earth electrode is had good anticorrosive effect.
Long service life, corrosion-proof, and electric resistance reducing agent for earthing (modified model) is a kind of solid particle sprills; it also can be solid modules; its resistance reducing effect is remarkable especially; metal earth electrode anti-corrosion protection had king-sized effect; under power frequency heavy impulse current effect repeatedly; electrical resistivity property is stable, to all pressing advantageous particularly, earth electrode good especially corrosion-resisting function is arranged.
The inventor entrusts State Grid Corporation of China's Wuhan High Voltage Research Institute in March, 2006 long service life, corrosion-proof, and electric resistance reducing agent for earthing ((modified model)) to be carried out the impulse current resistance test, the power current resistance test, pH value, resistance reducing agent are tested steel earth electrode corrosion test etc., ask for an interview table 2.
Table 2 long service life, corrosion-proof, and electric resistance reducing agent for earthing (modified model) pilot project gathers
| Sequence number | The pilot project title | Requirement | Test value | Estimate | |
| 1 | The resistivity measurement test | ρ≤5Ω·m | ρ＝1.26Ω·m | Meet the requirements | |
| 2 | Physicochemical property certification test a, loss-of-coolant experiment (LOCE) b, cyclic test c, the test of water logging bubble | ρ≤6Ω·m | ρ＝1.44Ω·m ρ＝1.335Ω·m ρ＝1.265Ω·m | Meet the requirements | |
| 3 | The impulse current tolerance | ΔR％≤20％ | ΔR％≤1.07％ | Meet the requirements | |
| 4 | The power current tolerance | ΔR％≤20％ | ΔR％≤1.51％ | Meet the requirements | |
| 5 | The pH measurement test | PH value is in the 7-12 scope | PH＝7.1 | Meet the requirements | |
| 6 | The experiment of resistivity temperature characterisitic | Carry out | |||
| 7 | Resistance reducing agent is to metal earth electrode corrosion test | Surface average corrosion rate (mm/) | Scope (mm/) | ||
| A, pure resistance reducing agent are to metal earth electrode rate of corrosion experiment with measuring | Surface average corrosion rate≤0.03mm/ | Round steel: 0.0139 band steel: 0.0155 zinc-plated round steel: 0.0044 zinc-coated flat steel sheet: 0.0050 | 0.0098-0.0195 0.0166-0.0211 0.0010-0.0061 0.0037-0.0054 | Meet the requirements | |
| B, bury when ground resistance reducing agent to metal earth electrode rate of corrosion experiment with measuring | Average corrosion rate≤0.05mm/ | Round steel: 0.0136 band steel: 0.0191 zinc-plated round steel: 0.0064 zinc-coated flat steel sheet: 0.0069 | 0.0098-0.0150 0.0153-0.0257 0.0053-0.0080 0.0057-0.0076 | Meet the requirements | |
The invention has the beneficial effects as follows its stable chemical performance; whole indexs of its every technical parameter all meet the requirements; resistivity 1.26 Europe rice; under repeatedly power frequency and impulse current effect, electrical resistivity property is stable, and is desirable to the protection of metal grounding anti-corrosion; average corrosion rate (is example with zinc-plated round steel) is reduced to 0.0064mm/ by 0.0245mm/; prepare easyly, cost is low, easy construction.
Embodiment
The invention will be further described below in conjunction with embodiment.
A kind of long service life, corrosion-proof, and electric resistance reducing agent for earthing (modified model), it is made up of sodium bentonite and graphite, wherein each weight percentages of components is: sodium bentonite 50-99%, graphite 1-50%, the weight percent content of each essential element is silica: 40-70%, titanium oxide 0.01-3%, iron oxide 0.5-9%, aluminium oxide 2-20%, calcium oxide 1-7%, potassium oxide 0.1-6%, sodium oxide molybdena 1-6% in the sodium bentonite, and the fixed carbon content in the graphite is 60-90%.With sodium bentonite pulverize, abrasive dust, mix to mix well getting final product with graphite powder.It can use the method for applying and the soak method done, and general main is the soak method.Prepare a bulk of iron sheet at the construction field (site), resistance reducing agent is added water on stir with spade, around the earth electrode that then resistance reducing agent is laid in, its construction technology is the same with ready-mixed concrete easy.
The sodium bentonite that each component content of the prescription of the embodiment of the invention meets table 1 ratio is 90%, graphite powder is 10%, and its fixed carbon content is 81%.Sodium bentonite main component content is: silica: 53%, titanium oxide 1%, iron oxide 7%, aluminium oxide 15%, calcium oxide 5%, potassium oxide 4%, sodium oxide molybdena 5%.The fixed carbon content of graphite powder is 81%.
Claims (2)
1, a kind of long service life, corrosion-proof, and electric resistance reducing agent for earthing (modified model), it is characterized in that: it is made up of bentonite and graphite, wherein each weight percentages of components is: bentonite 50-99%, graphite 1-50%, the weight percent content of each essential element is silica: 40-70%, titanium oxide 0.01-3%, iron oxide 0.5-9%, aluminium oxide 2-20%, calcium oxide 1-7%, potassium oxide 0.1-6%, sodium oxide molybdena 1-6% in the bentonite, and the fixed carbon content in the graphite is 60-90%.
2, long service life, corrosion-proof, and electric resistance reducing agent for earthing according to claim 1 (modified model) is characterized in that: it is that a kind of solid particle sprills also can be solid modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100929634A CN100498978C (en) | 2006-06-13 | 2006-06-13 | Modified grounding anti-corrosion resistance reduction agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100929634A CN100498978C (en) | 2006-06-13 | 2006-06-13 | Modified grounding anti-corrosion resistance reduction agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1866409A true CN1866409A (en) | 2006-11-22 |
| CN100498978C CN100498978C (en) | 2009-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100929634A Expired - Fee Related CN100498978C (en) | 2006-06-13 | 2006-06-13 | Modified grounding anti-corrosion resistance reduction agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100498978C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882477A (en) * | 2010-06-25 | 2010-11-10 | 国网电力科学研究院武汉南瑞有限责任公司 | Long-acting antiseptic resistance-reducing agent |
| CN101719393B (en) * | 2008-12-30 | 2012-01-04 | 中国瑞林工程技术有限公司 | Biological bacteria grounded resistance-reducing agent |
| CN103198872A (en) * | 2013-03-20 | 2013-07-10 | 国家电网公司 | Resistance-reducing composition and application to soil thereof |
| CN104103334A (en) * | 2014-06-19 | 2014-10-15 | 国家电网公司 | Novel high-efficiency anti-corrosive physical resistance reducing agent for galvanized steel grounding grid |
| CN104449560A (en) * | 2014-11-18 | 2015-03-25 | 国网河南省电力公司漯河供电公司 | Environment-friendly long-acting grounding device anticorrosive agent and preparation method of anticorrosive agent |
| CN106654616A (en) * | 2016-10-07 | 2017-05-10 | 常州市鼎升环保科技有限公司 | Preparing method for corrosion-resisting grounding material |
| 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 |
| CN109349277A (en) * | 2018-10-08 | 2019-02-19 | 湖北捷地安电气有限公司 | A kind of environmental protection rush vegetation growth type grounding resistance-reducing material |
-
2006
- 2006-06-13 CN CNB2006100929634A patent/CN100498978C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719393B (en) * | 2008-12-30 | 2012-01-04 | 中国瑞林工程技术有限公司 | Biological bacteria grounded resistance-reducing agent |
| CN101882477A (en) * | 2010-06-25 | 2010-11-10 | 国网电力科学研究院武汉南瑞有限责任公司 | Long-acting antiseptic resistance-reducing agent |
| CN103198872A (en) * | 2013-03-20 | 2013-07-10 | 国家电网公司 | Resistance-reducing composition and application to soil thereof |
| CN103198872B (en) * | 2013-03-20 | 2016-08-03 | 国家电网公司 | A kind of fall hinders compositions and the application in soil thereof |
| CN104103334A (en) * | 2014-06-19 | 2014-10-15 | 国家电网公司 | Novel high-efficiency anti-corrosive physical resistance reducing agent for galvanized steel grounding grid |
| CN104449560A (en) * | 2014-11-18 | 2015-03-25 | 国网河南省电力公司漯河供电公司 | Environment-friendly long-acting grounding device anticorrosive agent and preparation method of anticorrosive agent |
| CN106654616A (en) * | 2016-10-07 | 2017-05-10 | 常州市鼎升环保科技有限公司 | Preparing method for corrosion-resisting grounding material |
| CN106654616B (en) * | 2016-10-07 | 2018-11-30 | 东阳市特意新材料科技有限公司 | A kind of preparation method of corrosion-resistant earthing material |
| 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 |
| CN109349277A (en) * | 2018-10-08 | 2019-02-19 | 湖北捷地安电气有限公司 | A kind of environmental protection rush vegetation growth type grounding resistance-reducing material |
Also Published As
| Publication number | Publication date |
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| CN100498978C (en) | 2009-06-10 |
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