CN106634410A - Anti-corrosion waterborne epoxy static electricity conducting paint and preparation method and application thereof - Google Patents

Anti-corrosion waterborne epoxy static electricity conducting paint and preparation method and application thereof Download PDF

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CN106634410A
CN106634410A CN201611008929.4A CN201611008929A CN106634410A CN 106634410 A CN106634410 A CN 106634410A CN 201611008929 A CN201611008929 A CN 201611008929A CN 106634410 A CN106634410 A CN 106634410A
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water
weight portion
aqueous
coating
corrosion
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CN106634410B (en
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施铭德
刘思平
周春爱
许盛景
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Hubei Tieshen Chemical Co Ltd
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Hubei Tieshen Chemical Co Ltd
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    • C09DCOATING 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
    • C09D163/00Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • B05D7/227Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of containers, cans or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
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    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
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    • C08K3/22Oxides; Hydroxides of metals
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    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08Anti-corrosive paints
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    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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    • C08K3/20Oxides; Hydroxides
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    • C08L2201/00Properties
    • C08L2201/04Antistatic

Abstract

The invention discloses waterborne epoxy static electricity conducting anti-corrosion paint, which is prepared from the following method including the steps that 1, water and waterborne dispersing agents are pre-mixed; then, the mixture is added into epoxy resin emulsion to be uniformly stirred; talcum powder, precipitated barium sulphate, titanium dioxide and bentonite are added step by step; high-speed uniform scattering is performed, then, the materials are ground until the fineness is smaller than 50 micrometers; then, the rest waterborne epoxy resin emulsion and the conducting powder are added; the mixture is uniformly stirred; wetting agents are added; the mixture is uniformly stirred; defoaming agents, flatting agents and flash-rust inhibitors are added step by step; diluted waterborne thixotropic agents are added; the materials are uniformly stirred; water is added for regulating the viscosity; an ingredient A is obtained; 2, water and ethyl alcohol are used for proportionally diluting waterborne epoxy curing agents to obtain an ingredient B; 3, the ingredient A and the ingredient B are respectively packaged according to the construction mixture ratio for simultaneously forming the waterborne epoxy static electricity conducting anti-corrosion paint. The paint can be used for the inner wall coating of steel crude oil storage tanks or petrochemical engineering steel intermediate product storage tanks and finished product oil steel storage tanks; obtained coatings have good protection functions of water resistance, oil resistance, chemical medium resistance, salt fog resistance, temperature resistance and the like.

Description

Anti-corrosion water-base epoxy static conductive coating and its preparation method and application
Technical field
The invention belongs to anticorrosive paint preparing technical field, more particularly to a kind of anti-corrosion with water-base epoxy static conductive coating and Its preparation method and application.
Background technology
Epoxy resin has excellent chemical resistance and to steel excellent adhesive attraction, is a kind of the anti-of excellent performance Corrosion material.It is pre- made by it thus solvent epoxy varnish usually applies the anticorrosion priming paint or intermediate coat in iron and steel protection Prime and be also applied to other materials surface;In petroleum and petrochemical industry anticorrosion application aspect, it be used to manufacture various structural members Steel surface anticorrosion priming paint, such as;Solvent type epoxy zinc-rich and epoxy micaceous iron intermediate coat, reservoir walls solvent type epoxy oil resistant Static conductive corrosion resistant coating etc..But as the environmental regulation of international standard and China is discharged to VOC (VOC) Restriction it is increasingly strict, the manufacture of solvent type epoxy corrosion resistant coating and using a large amount of VOC will be caused to volatilize, thus it is received in application To certain restriction.Research and development aqueous epoxy anticorrosive paint becomes the direction of epoxy-based lacquers development.At present with Water-borne modification epoxy primer, aqueous Change epoxy micaceous iron and obtain certain promotion and application in anticorrosion field, but reservoir walls with aqueous static conductive paint not yet There is the report that correlation technique develops.
The Water-borne modification of epoxide resin polymer has 2 kinds of water-soluble and emulsifying, and wherein emulsifying can be divided into self-emulsifying type(It is poly- Adduct molecule contains the hydrophilic emulsification group in part, in an aqueous medium in emulsification shape)With outer emulsifying(That is oil-soluble epoxy resin Additional emulsifying agent is modified, in an aqueous medium in emulsion form).Water-soluble epoxy resin due to containing hydrophilic radical it is more and can be with complete It is complete water-soluble(In the as clear as crystal aqueous solution), film forming ability absorbs moisture after its crosslinking curing, causes paint film water resistance bad, it is impossible to For corrosion resistant coating.And for outer emulsifying epoxy resin, since it is desired that making epoxy macromolecule in aqueous Jie under emulsifying agent effect It is emulsified in matter, and will remain in the polymer with outer emulsifying agent after crosslinking curing film forming, the outer emulsifying agent of residual also can shadow Ring the resistance to water of paint film.Self-Emulsified Epoxy can be solid with the crosslinking of Ammonia curing agent at it in an aqueous medium in emulsification shape After change, hydrophilic radical can be participated in after reaction as crosslinking functionality, lose its water-wet behavior, so the hydrophilicity of polymer Reduce.Therefore its film forming matter water resistance is excellent.
Static conductive paint is usually applied to be needed to control region or position that electrostatic produces harm, to eliminate because of electrostatic generation Disaster.Such as petroleum storage tank, computer floor, oil pipeline.Wherein petroleum storage tank is because of its requirement for anticorrosion height;Electrostatic conductive performance can The harm that can cause is big;The features such as construction is likely to be at confined space problem and requires construction safety, it is accordingly required in particular to aqueous, environmental protective, apply The good water-base epoxy static conductive corrosion resistant coating of work safety, antiseptic property.
, due to being limited by conductive material, its color is deeper, and medium-resistance is poor for traditional solvent-borne static electricity conductive anticorrosive paint, Oil quality etc. can be affected scarce existing.Especially in aqueous type corrosion resistant coating, impact of the aqueous medium to conducting electrostatic materials will be deepened The inequality of conductive coating performance and the impact to storing oil property.
The water-base epoxy static conductive corrosion resistant coating of the present invention due to being the discharge without VOC with water as solvent, produce by category environment-friendly type Product are invented.In construction, without injuries of the VOC to workmen, category healthy product invention.Without solvent discharge, limited When space is constructed, there is no the quick-fried harm of sudden strain of a muscle, belong to safety-type product invention.
The present invention is normal temperature double-component crosslinking curing type light color water-base epoxy static conductive corrosion resistant coating, mainly by water containing epoxy radicals Property epoxy resin and it is aqueous containing activity Ammonia curing agent composition, due to using external crosslinking type waterborne curing agent solidify.Solidification The epoxy coating of crosslinking is resistant to the erosion of acid-base solution and water-soluble neutrality salt ion, thus its decay resistance is better than outer emulsification Type water-base epoxy paint., there is no the impact to stored oil quality in light or colorful color design.
The content of the invention
The primary and foremost purpose of the present invention is to provide a kind of bi-component external crosslinking type anti-corrosion water-base epoxy static conductive coating.
Another object of the present invention is to provide a kind of preparation method of above-mentioned anti-corrosion water-base epoxy static conductive coating.
A further object of the present invention is to provide a kind of application of above-mentioned anti-corrosion water-base epoxy static conductive coating;It is described anti- Corruption water-base epoxy static conductive coating can be applicable to steel storage tank inner wall anti-corrosive application.
To achieve these goals, the present invention is employed the following technical solutions:A kind of anti-corrosion light color water-base epoxy static conductive The preparation method of coating, comprises the following steps:
(1), by the water of 8~13 weight portions and 0~0.4 weight portion aqueous dispersion premix after, add 15~20 weight portions it is aqueous In epoxy resin latex, be stirred until homogeneous, progressively sequentially add 0~1.0 parts by weight of bentonite, 9~13 weight portion talcum powder, 8 ~15 weight portion blanc fixes and 6~12 weight portion titanium dioxides, to sand mill after being uniformly dispersed at a high speed, are ground to fineness and are less than 50 microns;
Add 10~25 weight portion aqueous epoxy resin emulsions, 18~24 weight portion conducting powders to stir, add 0~0.2 Weight portion aqueous wetting agent, stirs, and progressively sequentially adds 0~0.5 weight portion defoamer and 0~0.5 weight portion levelling agent With the anti-flash rusting agent of 0~1.0 weight portion.
Add 5~10 weight portions proportionally to open dilute aqueous thixotropic agent, stir, add 5~10 weight portion water, obtain To water-base epoxy static conductive corrosion resistant coating component A.
(2), with 30~60 weight portion water, 5~15 parts by weight of ethanol and 40~70 weight portion aqueous epoxy curing agents mix It is uniformly mixing to obtain water-base epoxy static conductive corrosion resistant coating B component.
(3), A, B component are by construction proportioning(Weight ratio;A:B=8~12:1)Respectively packaging collectively constitute water-base epoxy lead it is quiet Electric protection paint.
Step(1)The aqueous dispersion is the modest W519 of TaiWan, China moral;The aqueous epoxy resin emulsion is Shanghai The 703A of resin processing plant of Xinhua;The talcum powder is 1200 mesh;The barium sulfate is 800 mesh blanc fixes;The titanium dioxide is Du Pont's rutile-type 706;The bentonite aqueous uses bentonite for the BP-187 of Linan Ward;The conducting powder is Shanghai monarch river BC-C10;The aqueous wetting agent is the modest WT-18 of TaiWan, China moral, and defoamer is the modest W0506 of TaiWan, China moral, levelling agent For the DSX2000 of extra large river chemical industry;The aqueous thixotropic agent is the modest WT-201 of TaiWan, China moral, anti-flash rusting agent be Foshan forever The anti-flash rusting special assistant YH002 of vast and boundless chemical industry.Step(2)The aqueous epoxy curing agent for Xinhua Resin Factory, Shanghai 703B, second Alcohol is technical grade.
The anti-corrosion prepared by said method water-base epoxy static conductive coating.
The weight ratio of component A and B component is A:B=8~12:1.
Present invention also offers above-mentioned anti-corrosion water-base epoxy static conductive coating is applied to steel storage tank inner wall anti-corrosive application.
The steel storage tank interior finishing presses following operating procedure:
(1)The pre-treatment of steel storage tank inwall;Compressed-air blast cleaning reaches Sa2.5~3.0 grade that GB8923-2011 specifies, surface is thick Rugosity Rz50~80 micron.
(2)In spraying, roller coating or brushing on the steel storage tank inwall of front process;
(3)Water-repellent preservation fluorocarbon coating is pressed into A and B component 8~12:1 part by weight is prepared, and adds a small amount of water adjustment viscous Spend to 25-35 seconds/painting 4#, 23 DEG C, in clean surface spraying, roller coating or brush anti-corrosion water-base epoxy static conductive coating.
(4)It is dried more than 24 hours under steel storage tank inwall normal temperature after painting anticorrosion paint paint, detects coating surface resistance.
The steel storage tank is crude oil storage tank;Petrochemical refining's equipment intermediate products storage tank;Product tank and oil pipeline, The aspects such as chemical industry equipment.
The present invention principle be:Aqueous self-emulsifying is carried out using the epoxy resin with hydrophilic radical so that solvent-borne type ring Oxygen tree fat corrosion resistant coating Water-borne modification.By the aqueous ripple hydrogen Ammonia curing agent containing work to aqueous epoxy resins crosslinking curing, water is improved Water-fast, the medium-resistance of property two component epoxy corrosion resistant coating, meets anticorrosive coating technical requirements.Again by extraordinary static conductive Material, puts into practice light-colored static conductive function.
Compared with prior art, the present invention has following beneficial effect:Led using anti-corrosion water-base epoxy of the present invention quiet Electrocoating paint can be painted as anti-corrosion in storage tank static conductive, the antiseptic property and oil resistant heatproof oiliness of coating with solvent-borne type static conductive It is completely the same, it is the technological innovation of solvent-borne type anticorrosion static conductive paint.With water as main dispersing medium, VOC content close to Zero;Without the discharge of volatile organic solvent, also just eliminate in confined air without " dodging quick-fried " fire hazard during construction Between application construction risk.The volatilization of aqueous medium simultaneously does not constitute health effect to workmen, eliminates workmen's Health hazard.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Embodiment 1
(1), by the water of 8 weight portions and 0.4 weight portion aqueous dispersion premix after, add 15 weight portion aqueous epoxy resin emulsions In, it is stirred until homogeneous, 1.0 parts by weight of bentonite, 9 weight portion talcum powder, 12 weight portions precipitation are progressively added in the following sequence Barium sulfate, 8 weight portion titanium dioxides, to sand mill after being uniformly dispersed at a high speed, are ground to fineness less than 50 microns;
Add 15 weight portion aqueous epoxy resin emulsions, 24 weight portion conducting powders to stir, add the aqueous profit of 0.2 weight portion Humectant, stirs, and progressively adds 0.3 weight portion defoamer and 0.3 weight portion levelling agent and 0.5 weight portion according to order once Anti- flash rusting agent.
Add 10 weight portions proportionally to open dilute aqueous thixotropic agent of 1.0 weight portions, stir, add 2 weight portion water, Adjustment viscosity.Obtain water-base epoxy static conductive corrosion resistant coating component A.
(2), with 40 weight portion water, the stirring of 10 parts by weight of ethanol opened dilute 50 weight portion aqueous epoxy curing agent and obtained aqueous ring Oxygen static conductive corrosion resistant coating B component.
(3), A, B component are by construction proportioning(Weight ratio;A:B=8:1)Respectively packaging collectively constitutes water-base epoxy static conductive and prevents Corruption paint.
8 are compared according to weight with light water-base epoxy static conductive coating, component A and B component to the present embodiment gained anti-corrosion:1 Mixing, adds a small amount of deionized water, adjustment viscosity to 30-60(Second/25 DEG C, apply 4# cups), according to GB/T1727-1999《Paint film It is typically prepared method》Carry out making sheet drying.Index of correlation in reference standard GB50393 carries out all round properties inspection, as a result such as table Shown in 1.
The gained anti-corrosion of 1 embodiment of table 1 is tested with light water-base epoxy static conductive coating check feature
Embodiment 2(Contrast test)
(1), by the water of 10 weight portions and 0.4 weight portion aqueous dispersion premix after, add 18 weight portion aqueous epoxy emulsions(Its Middle first style is using the 703A aqueous epoxy resin emulsions, second style of Xinhua Resin Factory, Shanghai using the outer of other commercially available producers Emulsion-type epoxy emulsion)In, be stirred until homogeneous, progressively sequentially add 1.0 parts by weight of bentonite, 10 weight portion talcum powder, 10 weight portion blanc fixes, 10 weight portion titanium dioxides, to sand mill after being uniformly dispersed at a high speed, are ground to fineness micro- less than 50 Rice;
Equally, 15 weight portion aqueous epoxy resin emulsions, 20 weight portion conducting powders are added to stir, 0.2 weight portion is added Aqueous wetting agent, stirs, and progressively sequentially adds 0.3 weight portion defoamer and 0.3 weight portion levelling agent and 0.5 weight portion is anti- Flash rusting agent.
Add 8 weight portions proportionally to open dilute aqueous thixotropic agent of 0.8 weight portion, stir, add 2 weight portion water, Adjustment viscosity.Obtain two kinds of water-base epoxy static conductive corrosion resistant coating component As.
(2), with 40 weight portion water, the stirring of 10 parts by weight of ethanol opened dilute 50 weight portion aqueous epoxy curing agent and obtained aqueous ring Oxygen static conductive corrosion resistant coating B component.
(3), A, B component are by construction proportioning(Weight ratio;A:B=8:1)Respectively packaging collectively constitute two kinds of water-base epoxies lead it is quiet Electric protection paint(It is labeled as producer's first sample, producer's second sample).
To the present embodiment gained anti-corrosion grey water-base epoxy static conductive coating, component A and B component compare 5 according to weight:1 Mixing, adds a small amount of deionized water, adjustment viscosity to 30-60(Second/25 DEG C, apply 4# cups), according to GB/T1727-1999《Paint film It is typically prepared method》Carry out making sheet drying.Static conductive coating technical requirements carry out all round properties inspection in reference standard GB50393 standards Test, as a result as shown in table 1.
The gained anti-corrosion of 2 embodiment of table 2 is tested with grey water-base epoxy static conductive coating check feature
Sheet resistance is still when immersion is just started for the product surface resistive performance that ※ is made using outer emulsion-type epoxy emulsion Can, sheet resistance increase after immersion, until losing surface conductance performance.
Above-described embodiment step(1)The aqueous dispersion is the modest W519 of TaiWan, China moral;The aqueous epoxy resins Emulsion is the 703A of Xinhua Resin Factory, Shanghai(Aqueous epoxy resin emulsion described in first sample is Shanghai Xinhua wherein in contrast test The 703A of resin processing plant, second style replaces the aqueous epoxy resins breast using the outer emulsion-type epoxy resin of other producers Liquid);The talcum powder is 1200 mesh;The barium sulfate is 800 mesh blanc fixes;The titanium dioxide is Du Pont's rutile-type 706;The bentonite aqueous uses bentonite for the BP-187 of Linan Ward;The conducting powder is the BC-C10 in Shanghai monarch river;Institute It is the modest WT-18 of TaiWan, China moral to state aqueous wetting agent, and defoamer is the modest W0506 of TaiWan, China moral, and levelling agent is extra large river chemical industry DSX2000;The aqueous thixotropic agent is the modest WT-201 of TaiWan, China moral, and anti-flash rusting agent is the Foshan anti-sudden strain of a muscle of vast and boundless chemical industry forever Rust special assistant YH002.Step(2)The aqueous epoxy curing agent is the 703B of Xinhua Resin Factory, Shanghai, and ethanol is technical grade.
The explanation of this example detection;Internal emulsification type aqueous epoxy resins(The 703A of Xinhua Resin Factory, Shanghai)It is aqueous with outer emulsification In epoxy resin no larger difference in outward appearance and filming performance, but the sheet resistance after medium-resistance is medium immersion Difference is obvious, it is impossible to play coating static conductive effect.Because the Water-borne modification emulsifying agent used in water-base epoxy can affect coating Medium-resistance and electrostatic conductive performance.Detection explanation intramolecular of the present invention emulsifies aqueous epoxy static conducting coating The progress of anticorrosion static conductive paint Water-borne modification.It takes into account anticorrosion and environment-friendly water-basedization, can also ensure solvent-borne type static electrification coating Static conductive feature.
From the prior art(Such as published patent application)Understand, use double groups with regard to static conductive finish paint at present Part epoxy solvent-borne type anticorrosion static conductive paint, or non-solvent epoxy static conductive corrosion resistant coating.For water-base epoxy static conductive corrosion resistant coating To be in storage tank with the technological innovation of static conductive coating, due to its have environmental protection, health, it is safe the characteristics of, and with splendid Corrosion Protection and heat resistance, the potential safety hazard and practitioner brought in confined space construction for reduction is healthy, For many-sided benefit such as environmental protection in the construction for bringing and organic gas discharge is significant.
Result of implementation of the present invention, the anticorrosion of light water-base epoxy static conductive corrosion resistant coating film and medium-resistance temperature tolerance Can be closer to compared with solvent type epoxy anti-corrosive and static conductive, solvent-borne type antisepsis finishing paint can be substituted completely for anticorrosion of steel structure Erosion, its maximum is characterised by;With water as solvent, organic solvent emission is reduced, reduce the pollution to environment.
Embodiment 3
The products obtained therefrom of embodiment 1 is carried out into construction application by following operating procedure:
(1)The pre-treatment of steel storage tank inwall;Compressed-air blast cleaning reaches Sa2.5~3.0 grade that GB8923-2011 specifies, surface is thick Rugosity Rz50~80 micron.
(2)In spraying, roller coating or brushing on the steel storage tank inwall of front process;
(3)Water-repellent preservation fluorocarbon coating is pressed into A and B component 8~12:1 part by weight is prepared, and adds a small amount of water adjustment viscous Spend to 25-35 seconds/painting 4#, 23 DEG C, in clean surface spraying, roller coating or brush anti-corrosion water-base epoxy static conductive coating.
(4)Under steel storage tank inwall normal temperature after painting anticorrosion paint paint be dried more than 24 hours, measure coating thickness, by will Application is asked to reach specific thickness.Spontaneously dry 48 hours, detect coating actual surface resistance.
By practice of construction application, the products obtained therefrom of embodiment 1 is met in GB/T50393 for the surface electricity of static conductive coating The requirement of resistance rate.Oil product is loaded by actual storage tank to detect afterwards for a period of time, the many-side anticorrosion such as coating acid and alkali resistance, salt, oil Performance, and coating heat resistance all reaches the technical requirements in GB/T50393.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention not by above-described embodiment Limit, other any Spirit Essences without departing from the present invention and the change, modification, replacement made under principle, combine, simplification, Equivalent substitute mode is should be, is included within protection scope of the present invention.

Claims (7)

1. a kind of anti-corrosion preparation method of water-base epoxy static conductive coating, the anti-corrosion water-base epoxy static conductive coating includes Weight ratio is 8~12:1 component A and B component, its preparation method is comprised the following steps:
(1), by the water of 8~13 weight portions and 0~0.4 weight portion aqueous dispersion premix after, add 15~20 weight portions it is aqueous In epoxy resin latex, be stirred until homogeneous, be gradually added 0~1.0 parts by weight of bentonite, 9~13 weight portion talcum powder, 8~15 Weight portion blanc fixe and 6~12 weight portion titanium dioxides, to sand mill after being uniformly dispersed at a high speed, are ground to fineness micro- less than 50 Rice;
Add 10~25 weight portion aqueous epoxy resin emulsions, 18~24 weight portion conducting powders to stir, add 0~0.2 Weight portion aqueous wetting agent, stirs, be gradually added 0~0.5 weight portion defoamer and 0~0.5 weight portion levelling agent and 0~ The anti-flash rusting agent of 1.0 weight portions;
Add 5~10 weight portions proportionally to open dilute aqueous thixotropic agent, stir, add 5~10 weight portion water, obtain water Property epoxy static conducting corrosion resistant coating component A;
(2), with 30~60 weight portion water, 5~15 parts by weight of ethanol and 40~70 weight portion aqueous epoxy curing agents stirring mix Uniformly obtain water-base epoxy static conductive corrosion resistant coating B component.
2. preparation method according to claim 1, it is characterised in that:Step(1)The aqueous dispersion is TaiWan, China The modest W519 of moral;The aqueous epoxy resin emulsion is the 703A of Xinhua Resin Factory, Shanghai;The talcum powder is 1200 mesh talcums Powder;The barium sulfate is 800 mesh blanc fixes;The titanium white is Du Pont's rutile-type 706;The bentonite is Linan Ward BP-187 aqueous use bentonite;The conducting powder is the BC-C10 in Shanghai monarch river;The aqueous wetting agent is TaiWan, China moral Modest WT-18, defoamer is the modest W0506 of TaiWan, China moral, and levelling agent is the DSX2000 of extra large river chemical industry;The aqueous thixotropic agent For the modest WT-201 of TaiWan, China moral, anti-flash rusting agent is Foshan vast and boundless chemical industry YH002 forever;Step(2)The water-base epoxy is consolidated Agent is the 703B of Xinhua Resin Factory, Shanghai.
3. the water-base epoxy static conductive coating that claim 1~2 either method is prepared.
4. anti-corrosion according to claim 3 water-base epoxy static conductive coating, it is characterised in that;The weight of component A and B component Amount is than being A:B=8~12:1.
5. the anti-corrosion epoxy static conducting coating described in claim 3 or 4 is applied to just reservoir walls anticorrosive coating processed.
6. application according to claim 5, it is characterised in that;Steel storage tank inner wall anti-corrosive application is by following operation step Suddenly:
(1)The pre-treatment of steel storage tank inwall;Compressed-air blast cleaning reaches Sa2.5~3.0 grade that GB8923-2011 specifies, surface is thick Rugosity Rz50~80 micron;
(2)In spraying, roller coating or brushing on the steel storage tank inwall of front process;
(3)Water-repellent preservation fluorocarbon coating is pressed into A and B component 8~12:1 part by weight is prepared, and adds water adjustment viscosity extremely The 25-35 seconds/painting 4#, 23 DEG C, in clean surface spraying, roller coating or brushing anti-corrosion water-base epoxy static conductive coating;
(4)It is dried more than 24 hours under steel storage tank inwall normal temperature after painting anticorrosion paint paint.
7. the application according to claim 5 or 6, it is characterised in that:The steel storage tank refers in steel crude oil storage tank storage tank Wall;Petrochemical refining's equipment intermediate products reservoir walls;Product tank inwall or oil pipeline.
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CN108912788A (en) * 2018-06-15 2018-11-30 河北晨阳工贸集团有限公司 A kind of water-base epoxy antistatic floor paint coating and preparation method thereof
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CN112280357A (en) * 2020-10-29 2021-01-29 洛阳万乐防腐涂料有限公司 Low-VOC high-corrosion-resistance water-based epoxy static conductive coating and preparation method thereof

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