CN108384294A - A kind of composite anti-corrosive conductive coating - Google Patents
A kind of composite anti-corrosive conductive coating Download PDFInfo
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- CN108384294A CN108384294A CN201810086941.XA CN201810086941A CN108384294A CN 108384294 A CN108384294 A CN 108384294A CN 201810086941 A CN201810086941 A CN 201810086941A CN 108384294 A CN108384294 A CN 108384294A
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- conductive coating
- coating
- composite anti
- graphite
- dimethylbenzene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to material chemistry technical fields, and in particular to a kind of composite anti-corrosive conductive coating, the coating include component：Epoxy resin, castor oil, dimethylbenzene, propene carbonate, alkane solvent oil, 1,2 propylene glycol, nickel, graphite, anti-settling agent.Use the conductive coating of the component that conductive material can be made to be interpenetrated with the grain size of the almost same order of magnitude with filmogen, each other without apparent interface, electrolyte solution is not easy to penetrate into the base material of coat inside.Therefore, there is excellent physical preservation performance and electric conductivity.It can evade " electrochemical corrosion " problem simultaneously, substantially prolong the service life of earthing material.
Description
Technical field
The invention belongs to material chemistry technical fields, and in particular to a kind of conductive coating more particularly to a kind of composite anti-corrosive
Conductive coating.
Background technology
Grounded screen is in the power equipments such as power plant, substation, transmission line of electricity, it is ensured that working earthing, lightning protection, protection
The necessary safety devices of ground connection.The rail traffics such as petrochemical industry, medication chemistry, nuclear power engineering, high ferro subway all relate to.With
China's economy rapid development, the transmission line of electricity that newly-built substation capacity is continuously increased and puts into operation is more and more, to grounded screen
Requirement be also increasingly stringenter.In the electric system such as transmission of electricity, power transformation, distribution, it is desirable that the contact resistance of grounded screen and the earth is got over
It is small better.If grounded screen, by heavy corrosion, charging equipment will occur short circuit and blow grounded screen at runtime, lead to electricity
Position increases, and high voltage sneaking into secondary circuit causes personal equipment breakdown, therefore grounded screen is the important guarantor of safe operation of power system
One of barrier, it can prevent power grid high voltage sneaking into secondary circuit and operating system, to protect the person and equipment safety.
In China, the material used in grounded screen is mainly ordinary carbon steel, and resistance to corrosion is poor, in addition, grounded screen is buried
It is located in the ground, repair and improvement cost are very high, therefore the protection of grounded screen equipment becomes electric system normal operation and economic life
Production problem in the urgent need to address.The coating that exploitation has both corrosion resistance and conducting function be that the corrosion of solution earthing material is asked
Topic provides new way.But the corrosion resistance of conductive coating is generally poor currently on the market, the preferable anti-corrosion of corrosion resistance
Conductive coating performance is again very low.
Important component of the conductive filler as conductive coating, type, shape and dosage have coating larger
It influences, currently used conductive filler has metal system filler, carbon filler and conducting polymer composite etc..Filler is in polymer
Dispersity in base-material has depended on the electric conductivity of conductive coating.If filler does not scatter, compound system is substantially non-conductive,
If dispersion is highly uniform, the polymer base material of insulating properties, which tightly wraps up filler particles, makes its mutually barrier-like distribution, system
Also non-conductive.Only electroconductive stuffing forms network-like or honeycomb structure in entire coating system can just have preferably conduction
Performance.
Various conductive fillers respectively have advantage and disadvantage.Carbon black structure is stable and not oxidizable, but additive amount is larger and influences coating
Adhesive force, appearance, be easy to cause crackle and peeling.Noble silver conducts electricity very well, but cost is higher, and migration easily occurs and makes
Decline at coating conductivity and causes electric conductivity unstable.Common metal is given because of its surface oxidation resistance easy to increase and uses band
It is inconvenient to come.The electric conductivity of this external coating also receives the influence of shape, dosage, stability and skin effect of conductive filler etc..
The granularity of conducting particles crosses conference and interparticle gap is caused to increase so that contact point is reduced, and increases conductivity.Grain simultaneously
Son crosses conference and accelerates its sinking speed in coating, influences the electric conductivity and application property of coating.On the contrary, granularity is smaller, ratio
Surface area increase will increase the possibility to form conductive net, but granularity is meticulous, and metal can lead to coating because of aoxidizing urgent
Conductive stability difference.
The main problem that conductive coating faces at present has：The adhesive force of the dispersed bad, filler and resin of superfine powder
Poor, filler additive amount is too big, comprehensive performance is unstable etc..It solves these problems and needs to be improved processing technology, the high property of exploitation
Can new filler or improve formula etc., therefore develop and have both conductive and antiseptic property and coating that comprehensive performance is stablized is urgently
It need to solve the problems, such as.
Invention content
In order to solve the problems in the existing technology, the present invention provides a kind of composite anti-corrosive conductive coating, the paintings
Material includes component：Epoxy resin, dimethylbenzene, propene carbonate, alkane solvent oil, 1,2- propylene glycol, nickel, graphite, is prevented castor oil
Heavy agent.
Use the conductive coating of the composition that can make conductive material with filmogen with the grain size phase of the almost same order of magnitude
Mutually infiltration, each other without apparent interface, electrolyte solution is not easy to penetrate into the base material of coat inside.Therefore, there is excellent object
Manage antiseptic property and electric conductivity.Simultaneously as matrix is electro-galvanized steel, coating composition does not contain the metals such as high potential such as copper,
So having evaded " electrochemical corrosion " problem, the service life of earthing material is substantially prolonged.
In a preferred embodiment, the coating is grouped as by following group：Epoxy resin, castor oil, dimethylbenzene,
Propene carbonate, alkane solvent oil, 1,2- propylene glycol, nickel, graphite, anti-settling agent.
Being used as filmogen using the conductive coating of the composition has better adhesive force and impact strength.
In a preferred embodiment, the composite anti-corrosive conductive coating is by weight ratio：
Epoxy resin 7-15%；
Castor oil 17-30%；
Dimethylbenzene 2-10%；
Propene carbonate 2-10%；
Alkane solvent oil 0.1-5%；
1,2- propylene glycol 0.1-5.0%；
Nickel 10-25%；
Graphite 15-30%；
Anti-settling agent 1-20%.
(test specimen) is tested for the property after being coated on galvanized steel using the composite anti-corrosive conductive coating of the proportioning, is passed through
After 30kA/2s cranking tests, test specimen face coat is complete, does not burn mistake, bubble-free, and coating is not fallen off, and meets to apply and want
It asks.
In another preferred embodiment, the composite anti-corrosive conductive coating is by weight ratio：
Epoxy resin 10-11%；
Castor oil 25-26%；
Dimethylbenzene 5-6%；
Propene carbonate 5.5-6%；
Alkane solvent oil 2-3%；
1,2- propylene glycol 1.5-2.0%；
Nickel 16-17%；
Graphite 22-23%；
Anti-settling agent 5-15%.
(test specimen) is tested for the property after being coated on galvanized steel using the composite anti-corrosive conductive coating of the proportioning, direct current
Resistivity≤0.5 Ω/m approaches steel conductivity.
In another preferred embodiment, the composite anti-corrosive conductive coating is by weight ratio：
Epoxy resin 11%；
Castor oil 26%；
Dimethylbenzene 6%；
Propene carbonate 6%；
Alkane solvent oil 2%；
1,2- propylene glycol 1.5%；
Nickel 16%；
Graphite 23%；
Anti-settling agent 8.5%.
Preferably, the anti-settling agent is aerosil.
Preferably, the graphite grain size is 200-300 mesh.
(test specimen) is tested for the property after being coated on galvanized steel using the composite anti-corrosive conductive coating of the proportioning, coating
Thickness >=0.15mm, surface layer is bright and clean, and thickness is uniform, dc resistivity≤0.5 Ω/m, approaches steel conductivity.By 30kA/2s
After cranking test, test specimen face coat is complete, does not burn mistake, bubble-free, and coating is not fallen off, and meets application requirement.It carries out
Corrosion resistance test, test specimen respectively successively in 10%NaCl, 10%HCl and 10%NaOH solution impregnate 1000h without
Bubble, no swelling, nothing fall off.It is subjected to standard impact strength 50cm (highest standard in coating industry), does not damage coating table
Face.Adhesive force reaches 1 grade of standard.
Description of the drawings
Fig. 1 is the wiring diagram of cranking test, in figure：H1, H2- disconnecting switch, B- cranking test transformers, K2- are low
Press phase selection switch, G- high-voltage adjustable reactors, K1- breakers, FL- magnetic potentiometers, S- test specimens；
Fig. 2 is detection 1 appearance material object photo of test specimen.
Specific implementation mode
Content in order to better understand the present invention does in detail present disclosure with reference to specific embodiment
Explanation, but specific embodiment is not the limitation to the content of present invention.
Embodiment 1：The preparation of composite anti-corrosive conductive coating
Sequence sequentially adds in the raw material to reaction vessel of following weight percent：
Epoxy resin 11%；
Castor oil 26%；
Dimethylbenzene 6%；
Propene carbonate 6%；
Alkane solvent oil 2%；
1,2- propylene glycol 1.5%；
Nickel 16%；
Graphite 23%；
Aerosil 8.5%；
Graphite is wherein milled to grain size 200-300 mesh in advance, is stirred at 20-25 DEG C with 100 revs/min of speed,
Uniform stirring obtains composite anti-corrosive conductive coating in 10-15 minutes.
Embodiment 2：With the preparation of composite anti-corrosive conductive coating zinc-coated flat steel sheet material
Acidic treatment is carried out to zinc-coated flat steel sheet surface, oxide on surface is removed and is prepared embodiment 2 using high pressure painting
What is obtained has composite anti-corrosive conductive coating to spray to band steel surface, is then toasted at 50 DEG C, toasts 10 minutes, so repeats
Three times, test specimen 1, coating layer thickness >=0.15mm, 40 × 4 × 120cm of specification are obtained.
Table 1 is only to be used instead obtained by different component and the conductive coating of proportioning using 2 identical spraying method of embodiment
The test specimen with conductive coating zinc-coated flat steel sheet,
Table 1
Embodiment 3：With composite anti-corrosive conductive coating zinc-coated flat steel sheet performance test
Adhesive force detects
Each laboratory sample takes 3 pieces of band steels, measurement result of being subject to consistent.
Client：Zhejiang Ren Tong Power Tech Corp. Inc.
Entrusted unit：National architectural hardware material product Quality Supervision and Inspection Center
The date of inspection：On November 18, -2014 years on the 17th November in 2014
Detect foundation：《GB/T 1732-1993 paint film impact resistance measuring methods》With《GB/T 1720-1979 (1989) paint film
Adhere to amylograph》
Detection project is impact strength (cm) and adhesive force (grade), and testing requirements are impact strength >=40, adhesive force
≤ 2, testing result is shown in Table 2.
Table 2
Should the experimental results showed that：The impact strength of laboratory sample 1-5 is all higher than 40cm, and adhesive force is 1 grade；Control sample
Product 3,4 and 6 impact strengths >=40cm, adhesive force is 2 grades；Control sample 1,2 and 5 impact strengths equal ＜ 40cm, it is attached
Put forth effort 2 grades of equal ＞, cannot be satisfied test request.
The measurement of resistant to liquid medium
Each laboratory sample takes 4 pieces of band steels, is averaged.
Client：Zhejiang Ren Tong Power Tech Corp. Inc.
Entrusted unit：National architectural hardware material product Quality Supervision and Inspection Center
The date of inspection：On December 17, -2014 years on the 15th November in 2014
Sample state：Model is in black gray expandable, and appearance is without exception
Detect foundation：GB/T9274-1988《The measurement of the resistance to liquid medium of paint and varnish》
The enterprise requirements of detection are that 1000h is non-swelling, not blistering, non-corrosive is to meet the requirements, and testing result is shown in Table 3.
Table 3
Test result shows：Test specimen 1-5 respectively after the measurement of the resistant to liquid medium of 1000h it is non-swelling, do not rise
Bubble, non-corrosive, meet the requirements, and control sample 3,4 and 6 cannot be satisfied requirement.
D.C. resistance measures and KA Rms experiment
Each laboratory sample takes 1 piece of band steel.
Client：Xinchang Ren Tong Power Tech Corp. Inc.
Entrusted unit：Electrical equipment inspection center of State Network Electric Power Research Institute
The date of inspection：On March 10, -2017 years on the 6th March in 2017
Sample state：Model is in black gray expandable, and appearance is without exception, and 1 appearance photo of test specimen is shown in Fig. 2
Detect foundation：Q/RTDL 08-2011
Main experimental instrument and equipment is shown in Table 4：
Table 4
Cranking test wiring diagram is shown in Fig. 1.
Examination criteria requirement：
The μ Ω of direct current resistance m easurem ent result DC resistance≤85, KA Rms test D.C. resistance change rate≤
10%；KA Rms test result is after the cranking test of 30kA/2s, and test product face coat is complete, does not burn mistake, nothing
Blistering, coating are not fallen off, and testing result is shown in Table 5.
Table 5
Test result shows that D.C. resistance measures and KA Rms is tested, test specimen 1-5 sample surface coating bases
Sheet is complete, does not burn mistake, without blistering, and coating is not fallen off, and the performance and the performance of test specimen 2 of test specimen 1 are best, and test sample
The performance of product 1 is better than the performance of test specimen 2；The performance of test specimen 2 is better than test specimen 3 and 4, but test specimen 3 and 4
Performance be better than test specimen 5.
Claims (7)
1. a kind of composite anti-corrosive conductive coating, including component：Epoxy resin, castor oil, dimethylbenzene, propene carbonate, alkane are molten
Agent oil, 1,2- propylene glycol, nickel, graphite, anti-settling agent.
2. the composite anti-corrosive conductive coating according to claim 1, is grouped as by following group：Epoxy resin, castor oil,
Dimethylbenzene, propene carbonate, alkane solvent oil, 1,2- propylene glycol, nickel, graphite, anti-settling agent.
3. composite anti-corrosive conductive coating according to claim 1 or 2, by weight ratio：
Epoxy resin 7-15%；
Castor oil 17-30%；
Dimethylbenzene 2-10%；
Propene carbonate 2-10%；
Alkane solvent oil 0.1-5%；
1,2- propylene glycol 0.1-5.0%；
Nickel 10-25%；
Graphite 15-30%；
Anti-settling agent 1-20%.
4. the composite anti-corrosive conductive coating according to claim 3, by weight ratio：
Epoxy resin 10-11%；
Castor oil 25-26%；
Dimethylbenzene 5-6%；
Propene carbonate 5.5-6%；
Alkane solvent oil 2-3%；
1,2- propylene glycol 1.5-2.0%；
Nickel 16-17%；
Graphite 22-23%；
Anti-settling agent 5-15%.
5. the composite anti-corrosive conductive coating according to claim 4, by weight ratio：
Epoxy resin 11%；
Castor oil 26%；
Dimethylbenzene 6%；
Propene carbonate 6%；
Alkane solvent oil 2%；
1,2- propylene glycol 1.5%；
Nickel 16%；
Graphite 23%；
Anti-settling agent 8.5%.
6. according to the composite anti-corrosive conductive coating of claim 1,2,4,5 or 6, the anti-settling agent is aerosil.
7. composite anti-corrosive conductive coating according to claim 6, the graphite grain size is 200-300 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810086941.XA CN108384294A (en) | 2018-01-30 | 2018-01-30 | A kind of composite anti-corrosive conductive coating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810086941.XA CN108384294A (en) | 2018-01-30 | 2018-01-30 | A kind of composite anti-corrosive conductive coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109207019A (en) * | 2018-08-27 | 2019-01-15 | 国网河南省电力公司检修公司 | A kind of conductive anti-corrosion coating and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1473895A (en) * | 2003-08-07 | 2004-02-11 | 武汉二十一世纪防腐科技有限公司 | Nano carbon anti-sorrosive conductive paint used for power system earthing net |
| CN105440879A (en) * | 2014-08-21 | 2016-03-30 | 中国石油天然气集团公司 | Electrostatic conductive coating |
| CN106752710A (en) * | 2016-12-21 | 2017-05-31 | 钦州太平电子科技有限公司 | A kind of corrosion resistant coating of electronic elements |
-
2018
- 2018-01-30 CN CN201810086941.XA patent/CN108384294A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1473895A (en) * | 2003-08-07 | 2004-02-11 | 武汉二十一世纪防腐科技有限公司 | Nano carbon anti-sorrosive conductive paint used for power system earthing net |
| CN105440879A (en) * | 2014-08-21 | 2016-03-30 | 中国石油天然气集团公司 | Electrostatic conductive coating |
| CN106752710A (en) * | 2016-12-21 | 2017-05-31 | 钦州太平电子科技有限公司 | A kind of corrosion resistant coating of electronic elements |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109207019A (en) * | 2018-08-27 | 2019-01-15 | 国网河南省电力公司检修公司 | A kind of conductive anti-corrosion coating and preparation method thereof |
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