CN102295876B - Conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone and manufacturing method thereof - Google Patents
Conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone and manufacturing method thereof Download PDFInfo
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- CN102295876B CN102295876B CN 201110191331 CN201110191331A CN102295876B CN 102295876 B CN102295876 B CN 102295876B CN 201110191331 CN201110191331 CN 201110191331 CN 201110191331 A CN201110191331 A CN 201110191331A CN 102295876 B CN102295876 B CN 102295876B
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Abstract
The invention relates to a conductive paint for gas cathodic protection for a pipeline in ocean platform atmospheric zone and a manufacturing method thereof. The conductive paint is characterized by consisting of a liquid A and a liquid B, wherein the liquid A is prepared from an aqueous epoxy hardener, deionized water, a high-efficiency inorganic pigment and filler dispersing agent, a rheological auxiliary agent, a mineral-oil-based defoamer, an efficient latex paint dispersing agent, a conductivity controlling auxiliary agent of electrostatic spraying paint, an ultraviolet absorber, a hindered amine light stabilizer, a dibasic acid ester mixture, conductive graphite powder and conductive mica powder; and the liquid B is hydrogenated epoxy resin; and when in use, the liquid A and the liquid B are mixed and solidified to form a film, the film has the advantages of good constructability and storage stability, good conductivity, good adhesion and weather fastness, uniform film layer, simple production process and high cost performance, is a key composition part for achieving the gas cathodic protection for the pipeline in the ocean platform atmospheric zone, and the surface resistivity of the film can reach less than or equal to 1*10<10> omega.
Description
Technical field
The present invention relates to a kind of corrosion-proof technology for pipeline field that relates to, particularly conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone and manufacture method thereof are used for realizing the galvanic protection of ocean platform atmospheric zone pipeline gas phase.
Technical background
From invention cathode protection technology in 1824 so far; although this effective and economic anti-corrosion measure is always by people's widespread use; but for many years, cathode protection technology can only be for the electrolyte environment of the external phases such as liquid electrolyte environment and edatope both at home and abroad.Can hardware implement galvanic protection must possess three conditions: (1) protected metal must be among the continuous electrolyte environment; (2) protected metal is easily polarized in electrolyte environment; (3) protected metal, anode and electrolysis mass-energy form the galvanic circle.For the hardware or the member that are directly exposed in the gaseous environment; and various storage tanks, pipeline to be positioned at the situation corrosive mediums such as area that supernatant position and gas-liquid two-phase have a common boundary be the high resistance thin liquid film that discontinuous phase disperses; when utilizing traditional cathode protecting process; the traditional cathode protecting process of all surfaces that impressed current can't reach protected metal also is difficult to the effect that reaches desirable, even can not realize galvanic protection.
Summary of the invention
The objective of the invention is: a kind of conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone is provided, is used for ocean platform atmospheric zone pipeline, can realize the gas phase galvanic protection, it is filmed and has good electroconductibility, and surface resistivity reaches≤and 1 * 10
10Ω.
The technical solution used in the present invention is:
One, the raw material of conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone comprises:
1, aqueous epoxy curing agent, product grade: Aradur340
Zhang Xiumei Guo Shujing chief editor's " domestic and international coating resin kind handbook, the 503rd page of Chemical Industry Press.
Character: take water as dispersion medium, use safety, conveniently, can reduce greatly the VOC content of coating; With the paint film that makes after Resins, epoxy cooperates, sticking power is excellent, and fullness ratio is high, and snappiness is wear-resisting, can resist the corrosion of number of chemical medicine.
Purposes: be used for coating film forming base-material, the preparation aqueous epoxy coating.
Factory: U.S.'s Hensel steps advanced material company limited.
2, efficient inorganic color stuffing dispersion agent, product grade: Dispersant 900
Geng Xing chief editor's " modern aqueous paint additive handbook, Sinopec press, the 74th page.
Performance: efficient inorganic color stuffing dispersion agent can provide efficient dispersiveness to the ionogen filler, makes dope viscosity stable.
Purposes: be used for the dispersion of emulsion system inorganic color stuffing.
Factory: extra large river Chemical Industry Science Co., Ltd
3, auxiliary rheological agents, product grade: Rheo WT-202
Geng Xing chief editor's " modern aqueous paint additive handbook, Sinopec press, the 232nd page.
Performance: auxiliary rheological agents can provide good thickening and excellent flow leveling.
Purposes: the auxiliary rheological agents that is used for aqueous coating system.
Factory: the modest chemical company limited of moral
4, mineral oil based defoamer, product grade: BYK-033
Geng Xing chief editor's " modern aqueous paint additive handbook, Sinopec press, the 157th page.
Performance: this defoamer is the mixture of hydrophobic ingredient in paraffin base mineral oil, does not contain organosilicon, and excellent storage stability can be eliminated the bubble in coating system production and the application process.
Purposes: the froth breaking auxiliary agent that is used for aqueous coating system.
Factory: German Bi Ke chemistry
5, emulsion paint dispersant with high efficiency, product grade: AMP-95
Geng Xing chief editor's " modern aqueous paint additive handbook, Sinopec press, the 447th page.
Performance: have efficient dispersiveness, the pH value of the hierarchy of control is effectively improved the performance of thickening material.
Purposes: the multifunctional assistant that is used for aqueous coating system.
Factory: Dow Chemical Angus ANGUS company
6, the electric conductivity of electrostatic spraying coating control auxiliary agent, product grade: BYK-ES80
Geng Xing edits modern aqueous paint additive handbook, Sinopec press, the 457th page.
Performance and purposes: improve the electric conductivity of coating, keep paint film character, stable viscosity.
Factory: German Bi Ke chemistry
7, UV light absorber, product grade: 3041 DISP
Guo Shujing chief editor's " domestic and international coatings additive(s) kind handbook, Chemical Industry Press, the 682nd page.
Performance and purposes: harmful ultraviolet radiation can be converted into heat energy by physics and play the protection polymkeric substance, the effect that it is not decomposed by UV-light.
Factory: Clariant company
8, hindered amine light stabilizer, product grade: 3051 DISP
Guo Shujing chief editor's " domestic and international coatings additive(s) kind handbook, Chemical Industry Press, the 683rd page.
Performance and purposes: by catching free radical, hydroperoxide decomposition, quencher excited energy etc. is used for stoping the degraded of polymkeric substance, plays the effect of protection polymkeric substance.
Factory: Clariant company
9, divalent ester mixture, product grade: DBE-IB
Geng Xing chief editor's " modern aqueous paint additive handbook, Sinopec press, the 189th page.
Performance: DBE-IB is the mixture that three kinds of dibasic esters form, and is commonly called as nylon acid dimethyl ester, is by 15% Succinic Acid diisobutyl ester, the combination of 58% pentanedioic acid diisobutyl ester and three kinds of good environment solvents of 27% adipic acid diisobutyl ester.The adding of divalent ester mixture can improve the film forming properties of emulsion, is lowered into film temperature, improves the freeze-thaw stability of emulsion.
Purposes: be used for the film coalescence aid that aqueous coating system helps polymer film forming.
Factory: du pont company
10, electrically conductive graphite powder, conductive mica powder;
There is sale (industrial goods) the special conductive powder material centre of development of protecting, Beijing.
The electrically conductive graphite powder, the conductive mica powder that use are conductive filler material.Conductive filler material is as a kind of functional materials, and mainly the form with filler is applied in the epoxy coating, makes it have electroconductibility, is the key components of solid electrolyte coating.The electroconductibility of graphite is by its physical chemistry structures shape.Conductive mica powder adopts nanotechnology, processes by surface treatment, semiconductor doping, makes its stromal surface form the electroconductibility zone of oxidation, thereby becomes the functional semiconductor fills of electronic conduction.
11, hydrogenated epoxy resin, product grade: ST-1000
Zhang Xiumei Guo Shujing chief editor's " domestic and international coating resin kind handbook, the 423rd page of Chemical Industry Press.
Purposes: be used for coating film forming base-material, be applicable to the occasion that weathering resistance is had relatively high expectations.
Factory: Japanese Toto Kasei KK.
12, deionized water.
Conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone; it is characterized in that: formed by A liquid and B liquid; wherein A liquid is by weight by 1 part aqueous epoxy curing agent; 1 part of deionized water; 0.001～0.01 part efficient inorganic color stuffing dispersion agent; 0.0001～0.005 part auxiliary rheological agents; 0.001～0.05 part mineral oil based defoamer; 0.001～0.005 part emulsion paint dispersant with high efficiency; 0.003 the electric conductivity of～0.07 part electrostatic spraying coating control auxiliary agent; 0.001～0.015 part UV light absorber; 0.005～0.02 part hindered amine light stabilizer; 0.012 the electrically conductive graphite powder of～0.12 part divalent ester mixture and 0.5～1.5 part; 0.1～0.5 part conductive mica powder is made; B liquid is hydrogenated epoxy resin, and the composition during use is that the A liquid of 1 weight part and the B liquid of 0.2～0.5 weight part mix.
Two, the manufacture method of conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone:
Major equipment: stainless steel charging basket, high speed dispersor, sand mill
Production method: in stainless charging basket, add aqueous epoxy curing agent and deionized water, it is mixed, add efficient inorganic color stuffing dispersion agent in the situation that stir, auxiliary rheological agents, the mineral oil based defoamer, the emulsion paint dispersant with high efficiency, the electric conductivity control auxiliary agent of electrostatic spraying coating, UV light absorber, hindered amine light stabilizer, divalent ester mixture, its temperature is controlled at 25 ℃, high-speed stirring in addition, add the electrically conductive graphite powder in the situation that stir, conductive mica powder, grind 0.5～1h with sand mill behind the high-speed stirring 0.25h and make A liquid in this coating, B liquid is hydrogenated epoxy resin.
The using method of conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone: at the scene, operating personnel 1: 0.2 in proportion～0.5 mixes A liquid and B liquid, and slaking evenly was coated on the protected object surface after 10 minutes.
The present invention's beneficial effect compared with prior art
1, conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone of the present invention; it is filmed and has good electroconductibility; surface resistivity can reach≤1 * 1010 Ω, good bonding force, weathering resistance; even film layer; production technique is simple; cost performance is high, is the key components that realize the galvanic protection of ocean platform atmospheric zone pipeline gas phase.
2, production technique is simple, need not specific installation.
Embodiment
Embodiment 1: the manufacture method of conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone.In stainless charging basket, add 1 part aqueous epoxy curing agent and 1 part deionized water, it is mixed, in the situation that stir the efficient inorganic color stuffing dispersion agent Dispersant 900 that adds 0.002 part, 0.0005 the auxiliary rheological agents Rheo WT-202 of part, 0.005 the mineral oil based defoamer BYK-033 of part, 0.002 the emulsion paint dispersant with high efficiency AMP-95 of part, 0.01 the electric conductivity of the electrostatic spraying coating of part control auxiliary agent B YK-ES80,0.002 the UV light absorber 3041DISP of part, 0.014 the hindered amine light stabilizer of part, 0.02 the divalent ester mixture of part, its temperature is controlled at 25 ℃, high-speed stirring in addition, in the situation that stir the electrically conductive graphite powder that adds 0.6 part, 0.5 the conductive mica powder of part, grind the 0.5 A liquid of making in this coating with sand mill behind the high-speed stirring 0.25h, B liquid is hydrogenated epoxy resin.The B liquid of the A liquid of 1 weight part and 0.34 weight part is mixed and is made conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone during use.
Embodiment 2: the manufacture method of conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone.In stainless charging basket, add 1 part aqueous epoxy curing agent and 1 part deionized water, it is mixed, in the situation that stir the efficient inorganic color stuffing dispersion agent Dispersant 900 that adds 0.003 part, 0.0006 the auxiliary rheological agents Rheo WT-202 of part, 0.01 the mineral oil based defoamer BYK-033 of part, 0.0025 the emulsion paint dispersant with high efficiency AMP-95 of part, 0.02 the electric conductivity of the electrostatic spraying coating of part control auxiliary agent B YK-ES80,0.004 the UV light absorber 3041DISP of part, 0.012 the hindered amine light stabilizer of part, 0.03 the divalent ester mixture of part, its temperature is controlled at 25 ℃, high-speed stirring in addition, in the situation that stir the electrically conductive graphite powder that adds 0.7 part, 0.4 the conductive mica powder of part, grind the 0.5 A liquid of making in this coating with sand mill behind the high-speed stirring 0.25h, B liquid is hydrogenated epoxy resin.The B liquid of the A liquid of 1 weight part and 0.36 weight part is mixed and is made conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone during use.
Embodiment 3: the manufacture method of conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone.In stainless charging basket, add 1 part aqueous epoxy curing agent and 1 part deionized water, it is mixed, in the situation that stir the efficient inorganic color stuffing dispersion agent Dispersant 900 that adds 0.004 part, 0.0007 the auxiliary rheological agents Rheo WT-202 of part, 0.02 the mineral oil based defoamer BYK-033 of part, 0.003 the emulsion paint dispersant with high efficiency AMP-95 of part, 0.03 the electric conductivity of the electrostatic spraying coating of part control auxiliary agent B YK-ES80,0.006 the UV light absorber 3041DISP of part, 0.01 the hindered amine light stabilizer of part, 0.04 the divalent ester mixture of part, its temperature is controlled at 25 ℃, high-speed stirring in addition, in the situation that stir the electrically conductive graphite powder that adds 0.8 part, 0.3 the conductive mica powder of part, grind the 0.5 A liquid of making in this coating with sand mill behind the high-speed stirring 0.25h, B liquid is hydrogenated epoxy resin.The B liquid of the A liquid of 1 weight part and 0.38 weight part is mixed and is made conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone during use.
Embodiment 4: the manufacture method of conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone.In stainless charging basket, add 1 part aqueous epoxy curing agent and 1 part deionized water, it is mixed, in the situation that stir the efficient inorganic color stuffing dispersion agent Dispersant 900 that adds 0.005 part, 0.0008 the auxiliary rheological agents Rheo WT-202 of part, 0.03 the mineral oil based defoamer BYK-033 of part, 0.0035 the emulsion paint dispersant with high efficiency AMP-95 of part, 0.04 the electric conductivity of the electrostatic spraying coating of part control auxiliary agent B YK-ES80,0.008 the UV light absorber 3041DISP of part, 0.008 the hindered amine light stabilizer of part, 0.05 the divalent ester mixture of part, its temperature is controlled at 25 ℃, high-speed stirring in addition, in the situation that stir the electrically conductive graphite powder that adds 0.9 part, 0.2 the conductive mica powder of part, grind the 0.5 A liquid of making in this coating with sand mill behind the high-speed stirring 0.25h, B liquid is hydrogenated epoxy resin.The B liquid of the A liquid of 1 weight part and 0.4 weight part is mixed and is made conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone during use.
Embodiment 5: the manufacture method of conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone.In stainless charging basket, add 1 part aqueous epoxy curing agent and 1 part deionized water, it is mixed, in the situation that stir the efficient inorganic color stuffing dispersion agent Dispersant 900 that adds 0.006 part, 0.0009 the auxiliary rheological agents Rheo WT-202 of part, 0.04 the mineral oil based defoamer BYK-033 of part, 0.004 the emulsion paint dispersant with high efficiency AMP-95 of part, 0.05 the electric conductivity of the electrostatic spraying coating of part control auxiliary agent B YK-ES80,0.01 the UV light absorber 3041DISP of part, 0.006 the hindered amine light stabilizer of part, 0.06 the divalent ester mixture of part, its temperature is controlled at 25 ℃, high-speed stirring in addition, in the situation that stir the electrically conductive graphite powder that adds 1.0 parts, 0.1 the conductive mica powder of part, grind the 0.5 A liquid of making in this coating with sand mill behind the high-speed stirring 0.25h, B liquid is hydrogenated epoxy resin.The B liquid of the A liquid of 1 weight part and 0.42 weight part is mixed and is made conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone during use.
Effect: conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone and coating performance according to above 5 embodiment preparation all can reach table 1 test result.
Table 1 the performance test results
Claims (7)
1. conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone, it is characterized in that: formed by A liquid and B liquid, wherein A liquid by weight, 1 part aqueous epoxy curing agent, 1 part of deionized water, 0.001～0.01 part efficient inorganic color stuffing dispersion agent, 0.0001～0.005 part auxiliary rheological agents, 0.001～0.05 part mineral oil based defoamer, 0.001～0.005 part emulsion paint dispersant with high efficiency, 0.003 the electric conductivity of～0.07 part electrostatic spraying coating control auxiliary agent, 0.001～0.015 part UV light absorber, 0.005～0.02 part hindered amine light stabilizer, 0.012 the electrically conductive graphite powder of～0.12 part divalent ester mixture and 0.5～1.5 part, 0.1～0.5 part conductive mica powder; B liquid is hydrogenated epoxy resin, and the composition during use is that the A liquid of 1 weight part and the B liquid of 0.2～0.5 weight part mix;
The product grade of efficient inorganic color stuffing dispersion agent is: Dispersant 900;
The product grade of emulsion paint dispersant with high efficiency is: AMP-95;
The product grade of the electric conductivity control auxiliary agent of electrostatic spraying coating is: BYK-ES80;
The product grade of described aqueous epoxy curing agent is: Aradur340;
The product grade of described hydrogenated epoxy resin is: ST-1000.
2. conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone according to claim 1, it is characterized in that: the product grade of described auxiliary rheological agents is: Rheo WT-202.
3. conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone according to claim 1, it is characterized in that: the product grade of described mineral oil based defoamer is: BYK-033.
4. conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone according to claim 1, it is characterized in that: the product grade of described UV light absorber is: 3041 DISP.
5. conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone according to claim 1, it is characterized in that: the product grade of described photostabilizer is: 3051 DISP.
6. conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zone according to claim 1, it is characterized in that: the product grade of described divalent ester mixture is: DBE-IB.
7. according to claim 1,2,3,4,5 or 6 described conductive paint for gas cathodic protection for pipeline in ocean platform atmospheric zones, it is characterized in that: in the mixed emulsion of aqueous epoxy curing agent and deionized water, add efficient inorganic color stuffing dispersion agent, auxiliary rheological agents, the mineral oil based defoamer, the emulsion paint dispersant with high efficiency, the electric conductivity control auxiliary agent of electrostatic spraying coating, UV light absorber, hindered amine light stabilizer, divalent ester mixture, its temperature is controlled at 25 ℃, mixed, high-speed stirring, add the electrically conductive graphite powder in the situation that stir, conductive mica powder grinds 0.5～1h with sand mill behind the high-speed stirring 0.25h and makes A liquid in this coating; B liquid is hydrogenated epoxy resin, and the composition during use is the A liquid of 1 weight part and the B liquid of 0.2～0.5 weight part.
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| CN102533061B (en) * | 2011-12-30 | 2014-08-13 | 洛阳双瑞防腐工程技术有限公司 | High-solid-content superhigh-corrosion-resistant water-based epoxy static conductive paint and preparation method thereof |
| CN109337576B (en) * | 2018-10-17 | 2021-01-15 | 北京亚创联华节能环保科技有限公司 | Graphite electrode protective agent |
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| JP2007211172A (en) * | 2006-02-10 | 2007-08-23 | Hitachi Chem Co Ltd | Water based antistatic coating composition and antistatic coating film using the same |
| CN100588694C (en) * | 2008-08-12 | 2010-02-10 | 无锡市虎皇漆业有限公司 | Quick drying conductive anticorrosion paint for oil tank and method for preparing same |
| CN101492587B (en) * | 2009-01-14 | 2013-07-31 | 史丹龙涂料（常州）有限公司 | Solvent-free epoxy electrically-conducting paint employing conductive mica powder as conducting medium |
| CN102051107B (en) * | 2010-12-25 | 2012-08-29 | 厦门双瑞船舶涂料有限公司 | Light-colored thick paste type epoxy static conductive anticorrosive paint and preparation method thereof |
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