CN103666199A - Carbon nanotube modified conductive anticorrosive paint used for grounding grids, and preparation method thereof - Google Patents

Carbon nanotube modified conductive anticorrosive paint used for grounding grids, and preparation method thereof Download PDF

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Publication number
CN103666199A
CN103666199A CN201310661841.2A CN201310661841A CN103666199A CN 103666199 A CN103666199 A CN 103666199A CN 201310661841 A CN201310661841 A CN 201310661841A CN 103666199 A CN103666199 A CN 103666199A
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China
Prior art keywords
carbon nanotube
epoxy resin
agent
carbon nano
parts
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CN201310661841.2A
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CN103666199B (en
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王利民
孟晓明
陈思敏
吴昊
祝郦伟
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State Grid Corp of China SGCC
Wuhan NARI Ltd
State Grid Zhejiang Electric Power Co Ltd
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State Grid Corp of China SGCC
Wuhan NARI Ltd
State Grid Zhejiang Electric Power Co Ltd
Nanjing NARI Group Corp
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Abstract

The invention provides a carbon nanotube modified conductive anticorrosive paint used for grounding grids, and a preparation method thereof. The carbon nanotube modified conductive anticorrosive paint comprises following ingredients, 40 to 60 parts of epoxy resin, 15 to 25 parts of an epoxy resin diluent, 4 to 6 parts of carbon nanotube, 10 to 15 parts of an antirust agent, 2 to 5 parts of an auxiliary agent, and 4 to 5 parts of a curing agent. The preparation method comprises following steps: epoxy resin and the epoxy resin diluent are mixed uniformly; carbon nanotube, the antirust agent, and the auxiliary agent are added into diluted epoxy resin; and an obtained mixture is mixed uniformly, the curing agent is added, and an obtained mixed is stirred uniformly so as to obtain the carbon nanotube modified conductive anticorrosive paint. According to the carbon nanotube modified conductive anticorrosive paint, carbon nanotube is taken as a conductive filler, so that length-diameter ratio of the carbon nanotube is relatively large, a three dimensional conductive network is formed in the carbon nanotube modified conductive anticorrosive paint, the three dimensional conductive network is filled with resin matrix, and excellent electrical conductivity is obtained by adding a small amount of the conductive filler. Coatings obtained via spraying and coating of the carbon nanotube modified conductive anticorrosive paint are low in resistivity, stable in conductivity, high in corrosion resistance and flexibility, and are excellent in adhesive force; and are compact.

Description

Be used for carbon nano-tube modification conductive anti-corrosion coating of ground net and preparation method thereof
Technical field
The present invention relates to conductive anti-corrosion coating, refer to particularly a kind of carbon nano-tube modification conductive anti-corrosion coating for ground net and preparation method thereof.
Background technology
Ground net metal is directly embedded to and in soil, is vulnerable to galvanic corrosion and is destroyed, and even occurs fracture, causes the discharge capacity of whole ground net to reduce, thus the safe operation that jeopardizes uphole equipment.
In order to prevent the corrosion of ground net, the normal galvanized steel that adopts replaces traditional carbon steel as ground connector at present.Because the electropotential of zinc is-0.77V, the electropotential of iron is-0.44V, and zinc coating is thinner, coat-thickness generally only has tens microns, in the soil of circumstance complication, zinc and iron form corrosion galvanic cell, are easy to the zinc coating as anode to erode, and are difficult to fundamentally solve Grounding Grid problem.
Compare with galvanized steel production technique, conductive anti-corrosion coating easy construction, equipment is simple, with low cost, efficiency is high, and has good corrosion resistance nature, large-scale popularization application in ground net in recent years.
It is packing type and metallic compound packing type that conductive anti-corrosion coating has metallic stuffing type, carbon by conductive additive classification.
For example patent CN101857762A discloses a kind of corrosion-resistant conductive coating for ground bar surface, and this coating adopts the nickel powder of nano-carbon powder that mass percent is 40%, 5% silver powder and 5% as conductive filler material.Due to nano-carbon powder poor electric conductivity, in order to improve the conductivity of coating, so added the metal powder that proportion is higher in coating, the conductive effect of silver powder is good, but its price is high, be unfavorable for promoting, nickel powder easily moves during one's term of military service at coating, may cause resistance of coating rate to decline and unstable properties.
Patent CN101892003A discloses a kind of conductive anti-corrosion coating for earth mat, and it adopts mass percent is that 10~20% nano magnetic iron oxide is as conductive filler material.But granular nanometer martial ethiops is the three-dimensional netted conductive network of more difficult formation in epoxy matrix, so this coating is difficult to the conductive effect that reaches desirable in the preparation, in addition in this coating, do not add other anticorrosive packing component, in practical application, can not reach the preservative effect of expection.
As can be seen here, existing conductive anti-corrosion coating is difficult to meet the harsh requirement of ground net.
Summary of the invention
Object of the present invention will overcome the existing deficiency of prior art exactly, and a kind of carbon nano-tube modification conductive anti-corrosion coating for ground net and preparation method thereof is provided.
For achieving the above object, the present invention is for the carbon nano-tube modification conductive anti-corrosion coating of ground net, and according to weight part, described coating comprises following component:
40~60 parts of epoxy resin, 15~25 parts of epoxy resin diluents, 4~6 parts of carbon nanotubes, 10~15 parts of rust-preventive agent, 2~5 parts of auxiliary agents, 4~5 parts, solidifying agent.
In the present invention, described epoxide diluent is the mixture of a kind of in toluene, dimethylbenzene, butanols, phenylcarbinol or at least two kinds.
In the present invention, the length of described carbon nanotube is 5~15 μ m, and the diameter of carbon nanotube is 10~100nm, is preferably 20nm~80nm, and the best is 40nm~60nm.
In the present invention, described epoxy resin is the mixture of a kind of in bisphenol A type epoxy resin, phenol aldehyde type epoxy resin or multi-functional epoxy's basic ring epoxy resins or at least two kinds.
In the present invention, described rust-preventive agent is the mixture of a kind of in red iron oxide, calcium monofluorophosphate, mica iron oxide red, micaceous iron oxide gray, zinc phosphate, zinc iron phosphate, aluminium triphosphate or at least two kinds.
In the present invention, described auxiliary agent is the mixture of a kind of in anti-settling agent, flow agent, defoamer, wetting dispersing agent, adhesion promoter or at least two kinds.
Described anti-settling agent is organobentonite or gas-phase silica, and described flow agent is BYK-340, and described defoamer is BYK-A530 or Airex900, and described wetting dispersing agent is the modest 923S of moral or BYK2070, and described adhesion promoter is KH550.
In the present invention, described solidifying agent is polynary amine curing agent.
The present invention also provides the preparation method of the above-mentioned carbon nano-tube modification conductive anti-corrosion coating for ground net: first epoxy resin is mixed with epoxy resin diluent, again carbon nanotube, rust-preventive agent and auxiliary agent are joined in the epoxy resin after dilution, after mixing, add solidifying agent, stir, obtain the carbon nano-tube modification conductive anti-corrosion coating for ground net.
Beneficial effect of the present invention: adopt carbon nanotube as conductive filler material, carbon nano-tube conductive can be good, has larger length-to-diameter ratio, easily forms three-dimensional conductive network in coating, resin matrix is filled in network, and adopts less conductive filler material just can reach preferably conductivity.Coating after the spray of this coating, brush has that resistivity is low and conductivity stable, and erosion resistance is strong; Coating is fine and close, and snappiness is good, strong adhesion.This coating is applicable to ground net steel surface corrosionproof protection, has the characteristic that disposable application can reach thickness.
Embodiment
In order to explain better the present invention, below in conjunction with specific embodiment, the present invention is described in further detail, but they do not form restriction to the present invention.
Embodiment 1
The carbon nano-tube modification conductive anti-corrosion coating of ground net, comprises following component: epoxy resin F51 is 50g, propyl carbinol 10g, and dimethylbenzene 10g, carbon nanotube 5g, zinc phosphate 15g, BYK2070 is 2g, gas-phase silica 3g, diethylenetriamine 5g.The diameter of carbon nanotube is 40~45nm, and length is 5~8 μ m.
First epoxy resin F51 is mixed with propyl carbinol, dimethylbenzene, then carbon nanotube, zinc phosphate, BYK2070 and gas-phase silica are joined in the epoxy resin F51 after dilution, adopting dispersion machine to carry out high-speed stirring mixes, adopt again three-roll grinder that filler is milled and is uniformly dispersed, finally add diethylenetriamine, stir, obtain the carbon nano-tube modification conductive anti-corrosion coating for ground net.
Embodiment 2
The carbon nano-tube modification conductive anti-corrosion coating of ground net, comprises following component: epoxy resin F44 is 55g, propyl carbinol 5g, and phenylcarbinol 15g, carbon nanotube 6g, red iron oxide 11g, the modest 923S of moral is 2g, organobentonite 2g, diethylenetriamine 4g.The diameter of carbon nanotube is 50~55nm, and length is 7~10 μ m.
First epoxy resin F44 is mixed with propyl carbinol, phenylcarbinol, then carbon nanotube, red iron oxide, the modest 923S of moral and organobentonite are joined in the epoxy resin F44 after dilution, adopting dispersion machine to carry out high-speed stirring mixes, adopt again three-roll grinder that filler is milled and is uniformly dispersed, finally add diethylenetriamine, stir, obtain the carbon nano-tube modification conductive anti-corrosion coating for ground net.
Embodiment 3
The carbon nano-tube modification conductive anti-corrosion coating of ground net, comprises following component: epoxy resin E44 is 60g, toluene 25g, and carbon nanotube 6g, calcium monofluorophosphate 15g, the modest 923S of moral is 2g, organobentonite 3g, diethylenetriamine 5g.The diameter of carbon nanotube is 55~60nm, and length is 10~15 μ m.
First epoxy resin E44 is mixed with toluene, then carbon nanotube, calcium monofluorophosphate, the modest 923S of moral and organobentonite are joined in the epoxy resin E44 after dilution, adopting dispersion machine to carry out high-speed stirring mixes, adopt again three-roll grinder that filler is milled and is uniformly dispersed, finally add diethylenetriamine, stir, obtain the carbon nano-tube modification conductive anti-corrosion coating for ground net.
Embodiment 4
The carbon nano-tube modification conductive anti-corrosion coating of ground net, comprises following component: epoxy resin E42 is 54g, toluene 8g, and phenylcarbinol 10g, carbon nanotube 5g, aluminium triphosphate 12g, BYK2070 is 2g, organobentonite 2g, diethylenetriamine 4g.The diameter of carbon nanotube is 55~60nm, and length is 10~15 μ m.
First epoxy resin E44 is mixed with toluene, phenylcarbinol, then carbon nanotube, aluminium triphosphate, BYK2070 and organobentonite are joined in the epoxy resin E42 after dilution, adopting dispersion machine to carry out high-speed stirring mixes, adopt again three-roll grinder that filler is milled and is uniformly dispersed, finally add diethylenetriamine, stir, obtain the carbon nano-tube modification conductive anti-corrosion coating for ground net.
Embodiment 5
The carbon nano-tube modification conductive anti-corrosion coating of ground net, comprises following component: epoxy resin E51 is 40g, phenylcarbinol 15g, and carbon nanotube 4g, zinc iron phosphate 10g, the modest 923S of moral is 1g, gas-phase silica 2g, diethylenetriamine 4g.The diameter of carbon nanotube is 55~60nm, and length is 10~15 μ m.
First epoxy resin E51 is mixed with phenylcarbinol, then carbon nanotube, zinc iron phosphate, the modest 923S of moral and gas-phase silica are joined in the epoxy resin E51 after dilution, adopting dispersion machine to carry out high-speed stirring mixes, adopt again three-roll grinder that filler is milled and is uniformly dispersed, finally add diethylenetriamine, stir, obtain the carbon nano-tube modification conductive anti-corrosion coating for ground net.
Adopt the coating in embodiment 1~5 to spray, film forming is done solid work and rear paint film coating is carried out to performance test:
The paint film coating volume specific resistance recording by HG/T3331-1978 standard is respectively 0.8 Ω cm, 6.4 Ω cm, 1.5 Ω cm, 2.6 Ω cm, 3.7 Ω cm;
Press the sticking power of GB/T1720-1989 standard testing paint film, test result shows that the sticking power of paint film is 1 grade;
The salt water resistance corrosive nature of paint film is pressed GB/T9274-1988 standard (10%NaCl, 720h) and is tested, and when test finishes, paint film, all without foaming phenomenon, and does not soak sample and compares without obviously variable color.
Through performance is tested and can be found out, the paint film that carbon nano-tube modification conductive anti-corrosion coating of the present invention obtains has lower volume specific resistance and good salt water resistance corrosive nature and sticking power.

Claims (10)

1. for a carbon nano-tube modification conductive anti-corrosion coating for ground net, it is characterized in that, according to weight part, described coating comprises following component:
40~60 parts of epoxy resin, 15~25 parts of epoxy resin diluents, 4~6 parts of carbon nanotubes, 10~15 parts of rust-preventive agent, 2~5 parts of auxiliary agents, 4~5 parts, solidifying agent.
2. the carbon nano-tube modification conductive anti-corrosion coating for ground net according to claim 1, is characterized in that: described epoxide diluent is the mixture of a kind of in toluene, dimethylbenzene, butanols, phenylcarbinol or at least two kinds.
3. the carbon nano-tube modification conductive anti-corrosion coating for ground net according to claim 1, is characterized in that: the length of described carbon nanotube is 5~15 μ m, and diameter is 10~100nm.
4. the carbon nano-tube modification conductive anti-corrosion coating for ground net according to claim 1, is characterized in that: the diameter of described carbon nanotube is 40~60nnm.
5. the carbon nano-tube modification conductive anti-corrosion coating for ground net according to claim 1, is characterized in that: described epoxy resin is the mixture of a kind of in bisphenol A type epoxy resin, phenol aldehyde type epoxy resin or multi-functional epoxy's basic ring epoxy resins or at least two kinds.
6. the carbon nano-tube modification conductive anti-corrosion coating for ground net according to claim 1, is characterized in that: described rust-preventive agent is the mixture of a kind of in red iron oxide, calcium monofluorophosphate, mica iron oxide red, micaceous iron oxide gray, zinc phosphate, zinc iron phosphate, aluminium triphosphate or at least two kinds.
7. the carbon nano-tube modification conductive anti-corrosion coating for ground net according to claim 1, is characterized in that: described auxiliary agent is the mixture of a kind of in anti-settling agent, flow agent, defoamer, wetting dispersing agent, adhesion promoter or at least two kinds.
8. the carbon nano-tube modification conductive anti-corrosion coating for ground net according to claim 1, it is characterized in that: described anti-settling agent is organobentonite or gas-phase silica, described flow agent is BYK-340, described defoamer is BYK-A530 or Airex900, described wetting dispersing agent is the modest 923S of moral or BYK2070, and described adhesion promoter is KH550.
9. the carbon nano-tube modification conductive anti-corrosion coating for ground net according to claim 1, is characterized in that: described solidifying agent is polynary amine curing agent.
10. the preparation method of the carbon nano-tube modification conductive anti-corrosion coating for ground net according to claim 1, it is characterized in that: first epoxy resin is mixed with epoxy resin diluent, again carbon nanotube, rust-preventive agent and auxiliary agent are joined in the epoxy resin after dilution, after mixing, add solidifying agent, stir, obtain the carbon nano-tube modification conductive anti-corrosion coating for ground net.
CN201310661841.2A 2013-12-09 2013-12-09 Carbon nano-tube modification conductive anti-corrosion coating for grounded screen and preparation method thereof Active CN103666199B (en)

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Cited By (16)

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Publication number Priority date Publication date Assignee Title
CN104231859A (en) * 2014-09-18 2014-12-24 国家电网公司 Phosphoric acid modified carbon nano tube/epoxy composite coating and preparation method thereof
CN104327672A (en) * 2014-11-05 2015-02-04 侨健新能源科技(苏州)有限公司 High-strength high-adhesion rust-proof cabin coating
CN104387828A (en) * 2014-11-26 2015-03-04 东风商用车有限公司 Carbon series conductive coating and preparation method thereof
CN104449022A (en) * 2014-11-26 2015-03-25 东风商用车有限公司 Carbon-serial conductive coating with ultralow content of carbon tubes and preparation method thereof
CN105295651A (en) * 2015-11-19 2016-02-03 蔡丝英 Highly corrosion-resistant anticorrosive coating and preparation method therefor
CN105295717A (en) * 2015-12-07 2016-02-03 国网山东莒南县供电公司 Protective coating for outdoor equipment of power grids
CN105349030A (en) * 2015-12-07 2016-02-24 国网山东莒南县供电公司 Preparation method of protective coating for power grid outdoor equipment
CN105368262A (en) * 2015-12-17 2016-03-02 常熟市方塔涂料化工有限公司 High-performance conductive anticorrosive paint and preparation method thereof
CN106085114A (en) * 2016-06-28 2016-11-09 郭迎庆 A kind of preparation method of anticorrosion ground connection coating material
CN106189704A (en) * 2016-08-05 2016-12-07 代长华 A kind of silver-plated carbon nanotube conducting coating and preparation method thereof
CN108997890A (en) * 2018-09-01 2018-12-14 张家港市东威新材料技术开发有限公司 A kind of preparation method for mixing silver-colored carbon nanotube-epoxy base composite coating
CN110857375A (en) * 2018-08-24 2020-03-03 中国科学院宁波材料技术与工程研究所 Conductive anticorrosive paint and preparation method and application thereof
CN111040579A (en) * 2019-12-30 2020-04-21 湖南航天三丰科工有限公司 Acid and alkali resistant composite floor coating and preparation method and use method thereof
CN111662608A (en) * 2020-05-21 2020-09-15 国网河北省电力有限公司电力科学研究院 Preparation method of super-hydrophobic conductive anticorrosive paint for grounding grid
CN112048209A (en) * 2020-09-21 2020-12-08 广东电网有限责任公司电力科学研究院 Filler, grounding grid anticorrosive paint and preparation method thereof
CN114921155A (en) * 2022-04-27 2022-08-19 宣伟(南通)涂料有限公司 Two-component coating composition, method of making the same, and coated articles

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104231859A (en) * 2014-09-18 2014-12-24 国家电网公司 Phosphoric acid modified carbon nano tube/epoxy composite coating and preparation method thereof
CN104327672B (en) * 2014-11-05 2016-11-09 江苏省海洋资源开发研究院(连云港) A kind of high intensity high adhesion force anti-corrosion cabin coating
CN104327672A (en) * 2014-11-05 2015-02-04 侨健新能源科技(苏州)有限公司 High-strength high-adhesion rust-proof cabin coating
CN104387828A (en) * 2014-11-26 2015-03-04 东风商用车有限公司 Carbon series conductive coating and preparation method thereof
CN104449022A (en) * 2014-11-26 2015-03-25 东风商用车有限公司 Carbon-serial conductive coating with ultralow content of carbon tubes and preparation method thereof
CN105295651A (en) * 2015-11-19 2016-02-03 蔡丝英 Highly corrosion-resistant anticorrosive coating and preparation method therefor
CN105349030A (en) * 2015-12-07 2016-02-24 国网山东莒南县供电公司 Preparation method of protective coating for power grid outdoor equipment
CN105295717A (en) * 2015-12-07 2016-02-03 国网山东莒南县供电公司 Protective coating for outdoor equipment of power grids
CN105368262A (en) * 2015-12-17 2016-03-02 常熟市方塔涂料化工有限公司 High-performance conductive anticorrosive paint and preparation method thereof
CN106085114A (en) * 2016-06-28 2016-11-09 郭迎庆 A kind of preparation method of anticorrosion ground connection coating material
CN106189704A (en) * 2016-08-05 2016-12-07 代长华 A kind of silver-plated carbon nanotube conducting coating and preparation method thereof
CN110857375A (en) * 2018-08-24 2020-03-03 中国科学院宁波材料技术与工程研究所 Conductive anticorrosive paint and preparation method and application thereof
CN108997890A (en) * 2018-09-01 2018-12-14 张家港市东威新材料技术开发有限公司 A kind of preparation method for mixing silver-colored carbon nanotube-epoxy base composite coating
CN111040579A (en) * 2019-12-30 2020-04-21 湖南航天三丰科工有限公司 Acid and alkali resistant composite floor coating and preparation method and use method thereof
CN111040579B (en) * 2019-12-30 2021-09-03 湖南航天三丰科工有限公司 Acid and alkali resistant composite floor coating and preparation method and use method thereof
CN111662608A (en) * 2020-05-21 2020-09-15 国网河北省电力有限公司电力科学研究院 Preparation method of super-hydrophobic conductive anticorrosive paint for grounding grid
CN111662608B (en) * 2020-05-21 2022-04-22 国网河北省电力有限公司电力科学研究院 Preparation method of super-hydrophobic conductive anticorrosive paint for grounding grid
CN112048209A (en) * 2020-09-21 2020-12-08 广东电网有限责任公司电力科学研究院 Filler, grounding grid anticorrosive paint and preparation method thereof
CN114921155A (en) * 2022-04-27 2022-08-19 宣伟(南通)涂料有限公司 Two-component coating composition, method of making the same, and coated articles

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