CN102850917A - Method for preparing anti-corrosive coating on steel surface - Google Patents
Method for preparing anti-corrosive coating on steel surface Download PDFInfo
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- CN102850917A CN102850917A CN2012103424995A CN201210342499A CN102850917A CN 102850917 A CN102850917 A CN 102850917A CN 2012103424995 A CN2012103424995 A CN 2012103424995A CN 201210342499 A CN201210342499 A CN 201210342499A CN 102850917 A CN102850917 A CN 102850917A
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Abstract
The invention relates to a method for preparing an anti-corrosive coating on the steel surface. The anti-corrosive coating comprises components including, by weight, 40-75 parts of film forming materials, 20-40 parts of polyaniline modified mica iron oxide, 1-5 parts of pigment, 1-8 parts of filler, 0.5-5 parts of auxiliaries and 10-40 parts of solvent. The anti-corrosive coating formed on the steel surface can form a passivation layer and a buffer layer with the steel surface.
Description
Technical field
The present invention relates to coating technology, refer to especially a kind of steel surface preparation method of anticorrosion paint.
Background technology
Metallic corrosion spreads all over national economy and national defense construction every field, endangers very serious.At first, corrosion can cause great direct or indirect financial loss.According to the statistics of the flourishing country of industry, the financial loss that causes because of corrosion accounts for the 1.5%-4.2% of then national economy total output value.Secondly, metallic corrosion, particularly stress corrosion and corrosion fatigue tend to cause calamitous Serious Accident, jeopardize personnel safety.Moreover, corrode a large amount of metals of not only loss, and wasted mass energy, the annual metal of wanting loss 10%-20% because of corrosion.In addition, in the industrial production such as oil, chemical industry, agricultural chemicals, because of the equipment run, drip, leak that corrosion causes, not only economic loss also may make toxic substance leak, and causes environmental pollution, jeopardizes people ' s health.Simultaneously, corrosion also may become the obstacle of production development and scientific-technical progress.
Iron mica is the good physical property rust-stabilising pigment of a kind of resistant to chemical media, in rust proof paint, has well water-fast and impervious effect, and ultraviolet ray is had certain reflection potential.The rust proof paint of being made by iron mica is widely used in the anti-corrosion protection in the fields such as bridge, electric tower, storage tank, tank car and engineering machinery.
The problem that existing iron mica exists is, because iron mica is the physical property rust-stabilising pigment, without passivation, Corrosion Protection is undesirable to iron and steel, must be with containing chromium or plumbous pigment cooperates the anticorrosion ability that just can reach good, and contain chromium or plumbous material has serious contamination to environment.
Summary of the invention
The objective of the invention is to make coating have eco-friendly characteristics, and improved the Corrosion Protection of iron mica by iron mica is passed through modification, the pigment that also no longer needs to contain chromium or lead cooperates.
The present invention is achieved by the following technical solutions:
A kind of environmental protection steel iron surface preparation method of anticorrosion paint, each composition of described coating forms to calculate by weight and comprises: filmogen 40-75 part, polyaniline modified micaceous iron oxide 20-40 part, pigment 1-5 part, filler 1-8 part, auxiliary agent 0.5-5 part, solvent 10-40 part.
Described filmogen is Synolac, resol, Resins, epoxy, urethane resin, fluorocarbon resin, chlorinated polyvinyl chloride or chlorinatedpolyethylene; Synolac is short oil oleum lini glyptal, short oil oleum lini glycerine alcohol ester resin, medium-oil-length Thistle oil Synolac, long-oil-length tetramethylolmethane oleum lini Synolac; Resol comprises pure phenolic resin or the pure dissolubility resol that Abietyl modified resol, alkylphenol are made; Resins, epoxy is bisphenol A type epoxy resin, and wherein epoxy curing agent is amine curing agent, includes fatty amine, quadrol, aromatic amine or cycloaliphatic amines.
Described solvent includes toluene, dimethylbenzene, butanols, butanone or pimelinketone.
Described auxiliary agent includes anti-sagging agent, dispersion agent, flow agent and defoamer.
The structure of book polyaniline modified micaceous iron oxide is sheet structure, consisting of surface coating layer is polyaniline and phytic acid, inside is iron mica, polyaniline is 75-95% by weight percentage in the coating layer, phytic acid is 5-25% by weight percentage, and the particle diameter of described iron mica is the 1200-1500 order.
Described anti-sagging agent is one or more combinations in wilkinite, polynite, kaolin or the aerosil.
A kind of environmental protection steel iron surface preparation method of anticorrosion paint may further comprise the steps:
A, at first prepare the iron mica of modified polyaniline modification, its step comprises:
1), preparation phosphoric acid and phytic acid mixed aqueous solution, phosphatase 11-2.5 mol/L wherein, phytic acid 0.1-0.35 mol/L;
2), aniline is joined 1) mixing solutions in, mixed concentration of aniline is the 0.08-0.8 mol/L, continues to stir 0.5-2 hour, gets the 1200-1500 purpose iron mica that adds 70-150g in the 500ml mixed solution, and stirred 5-30 minute, be pre-chilled to 0-10 ℃;
3), the aqueous solution of preparation oxygenant, the concentration of oxygenant is the 0.2-1.5 mol/L in the solution, the aqueous solution of oxygenant is pre-chilled to 0-10 ℃, and wherein oxygenant is one or more combinations in ammonium persulphate, hydrogen peroxide, Potassium Persulphate or the benzoyl peroxide;
4), with 3) in 500ml solution slowly added 2 at 10-30 minute) in, 0-10 ℃ of reaction 2-5 hour, use distilled water wash after separating, and at 80-100 ℃ of dry 1-5 hour, grind, screening obtains the iron mica of 200-500 order electrically conductive polyaniline modification.
B, with auxiliary agent, pigment, filler join and stirred in filmogen and the solvent 10-60 minute, then mesh-of-grind is less than discharging after 50 microns;
C, under high-speed stirring, will be joined in the mixture of B by the polyaniline-modified iron mica that A obtains, carry out high speed dispersion 20-60 minute, obtain the MIO coating of modified polyaniline modification;
D, according to the corresponding solidifying agent of the different choice of filmogen.
The invention has the beneficial effects as follows:
1, adopt technical scheme of the present invention, resulting steel surface anticorrosive coating can form passivation layer and corrosion-inhibiting layer with steel surface.
2, improved solidity to corrosion and the anti-permeability of conventional iron mica.
3, can replace the pigment that contains chromium and lead in the conventional MIO coating, described coating belongs to environmentally friendly.
Embodiment
Below describe technical scheme of the present invention in detail by specific embodiment.
Prepare by the following method the MIO coating of modified polyaniline modification, may further comprise the steps:
A, at first prepare the iron mica of modified polyaniline modification, its step comprises:
1), preparation phosphoric acid and phytic acid mixed aqueous solution, phosphatase 11-2.5 mol/L wherein, phytic acid 0.1-0.35 mol/L;
2), aniline is joined 1) mixing solutions in, mixed concentration of aniline is the 0.1-0.8 mol/L, continues to stir 0.5～2 hour, gets the 1200-1500 purpose iron mica that adds 70-150g in the 500ml mixed solution, and stirred 5-30 minute, be pre-chilled to 0-10 ℃;
3), the aqueous solution of preparation oxygenant, the concentration of oxygenant is the 0.2-1.5 mol/L in the solution, the aqueous solution of oxygenant is pre-chilled to 0-10 ℃, and wherein oxygenant is one or more combinations in ammonium persulphate, hydrogen peroxide, Potassium Persulphate or the benzoyl peroxide;
4), with 3) in 500ml solution slowly added 2 at 10-30 minute) in, 0-10 ℃ of reaction 2-5 hour, use distilled water wash after separating, and at 80-100 ℃ of dry 1-5 hour, grind, screening obtains the iron mica of 200-500 order electrically conductive polyaniline modification.
B, with auxiliary agent, pigment, filler join and stirred in filmogen and the solvent 10-60 minute, then mesh-of-grind is less than discharging after 50 microns;
C, under high-speed stirring, will be joined in the mixture of B by the polyaniline-modified iron mica that A obtains, carry out high speed dispersion 20-60 minute, obtain the MIO coating of modified polyaniline modification;
D, according to the corresponding solidifying agent of the different choice of filmogen.
Some filmogen does not use the solidifying agent can film forming yet.
Under normal temperature condition, solidify the MIO coating erosion shield that formed afterwards the modified polyaniline modification in 7-15 days.
A kind of environmental protection steel iron surface protective system, each composition of described coating forms to calculate by weight and comprises: filmogen 40-75 part, polyaniline modified micaceous iron oxide 20-40 part, pigment 1-5 part, filler 1-8 part, auxiliary agent 0.5-5 part, solvent 10-40 part.
Described filmogen is Synolac, resol, Resins, epoxy, urethane resin, fluorocarbon resin, chlorinated polyvinyl chloride or chlorinatedpolyethylene.
Synolac is short oil oleum lini glyptal, short oil oleum lini glycerine alcohol ester resin, medium-oil-length Thistle oil Synolac, long-oil-length tetramethylolmethane oleum lini Synolac.
Resol comprises pure phenolic resin or the pure dissolubility resol that Abietyl modified resol, alkylphenol are made.
Resins, epoxy is bisphenol A type epoxy resin, and wherein epoxy curing agent is amine curing agent, includes fatty amine, quadrol, aromatic amine or cycloaliphatic amines.
Described solvent includes toluene, dimethylbenzene, butanols, butanone or pimelinketone.
Described auxiliary agent includes anti-sagging agent, dispersion agent, flow agent and defoamer.
The structure of book polyaniline modified micaceous iron oxide is sheet structure, consisting of surface coating layer is polyaniline and phytic acid, inside is iron mica, polyaniline is 75-95% by weight percentage in the coating layer, phytic acid is 5-25% by weight percentage, and the particle diameter of described iron mica is the 1200-1500 order.
Described anti-sagging agent is one or more combinations in wilkinite, polynite, kaolin or the aerosil.
The dispersion agent that uses in this application, flow agent and defoamer and pigment and filler are prior art, no longer carry out too much explanation.
Embodiment 1
Produce in the following manner the iron mica of modified polyaniline modification, its step comprises:
1), preparation phosphoric acid and phytic acid mixed aqueous solution, phosphatase 11 .5 mol/L wherein, phytic acid 0.30 mol/L;
2) in the mixing solutions, aniline is joined 1), mixed concentration of aniline is 0.5 mol/L, continues to stir 0.5 hour, gets the 1250 purpose iron micas that add 80g in the 500ml mixed solution, and stirs 10 minutes, is pre-chilled to 8 ℃;
3), the aqueous solution of preparation oxygenant, the concentration of oxygenant is 1.5 mol/L in the solution, the aqueous solution of oxygenant is pre-chilled to 8 ℃, wherein oxygenant is one or more combinations in ammonium persulphate, hydrogen peroxide, Potassium Persulphate or the benzoyl peroxide, and what select in the present embodiment is benzoyl peroxide;
4), with 3) in 500ml solution slowly added 2 at 10-30 minute) in, 8 ℃ of reactions 3 hours, use distilled water wash after adopting centrifugation, and 90 ℃ of dryings 2 hours, grind, screening obtains the iron mica of 350 order electrically conductive polyaniline modifications, and polyaniline accounts for weight percent 80% in described coating layer, and phytic acid accounts for weight percent 20%.
With 0.5 part of dispersion agent, 1 part of flow agent, 1 part of defoamer, 0.5 part of anti-sagging agent, 2 parts of pigment, 2 parts of fillers, 25 parts of the iron micas of 350 order electrically conductive polyaniline modifications join in 20 parts of 40 parts of Resins, epoxy and the solvents, stirred 20 minutes, and ground to form particle diameter less than 40 microns micaceous iron oxide anticorrosive coatings of making the modified polyaniline modification.
Embodiment 2
With 0.5 part of dispersion agent, 1 part of flow agent, 1 part of defoamer, 0.5 part of anti-sagging agent, 2 parts of pigment, 2 parts of fillers, 25 parts of the iron micas of 350 order electrically conductive polyaniline modifications join in 20 parts of 75 parts of Synolac and the solvents, stirred 20 minutes, and ground to form particle diameter less than 40 microns micaceous iron oxide anticorrosive coatings of making the modified polyaniline modification.
Embodiment 3
With 0.5 part of dispersion agent, 1 part of flow agent, 1 part of defoamer, 0.5 part of anti-sagging agent, 2 parts of pigment, 2 parts of fillers, 25 parts of the iron micas of 350 order electrically conductive polyaniline modifications join in 20 parts of 60 parts of urethane resins and the solvents, stirred 20 minutes, and ground to form particle diameter less than 40 microns micaceous iron oxide anticorrosive coatings of making the modified polyaniline modification.
Embodiment 4
Produce in the following manner the iron mica of modified polyaniline modification, its step comprises:
1), preparation phosphoric acid and phytic acid mixed aqueous solution, phosphatase 11 .0 mol/L wherein, phytic acid 0.15 mol/L;
2) in the mixing solutions, aniline is joined 1), mixed concentration of aniline is 0.15 mol/L, continues to stir 1.5 hours, gets the 1250 purpose iron micas that add 70g in the 500ml mixed solution, and stirs 20 minutes, is pre-chilled to 2 ℃;
3), the aqueous solution of preparation oxygenant, the concentration of oxygenant is 0.5 mol/L in the solution, the aqueous solution of oxygenant is pre-chilled to 2 ℃, wherein oxygenant is one or more combinations in ammonium persulphate, hydrogen peroxide, Potassium Persulphate or the benzoyl peroxide, and what select in the present embodiment is ammonium persulphate;
4), with 3) in 500ml solution slowly added 2 at 10-30 minute) in, 2 ℃ of reactions 2 hours, use distilled water wash after adopting centrifugation, and 80 ℃ of dryings 5 hours, grind, screening obtains the iron mica of 350 order electrically conductive polyaniline modifications, and polyaniline accounts for weight percent 86% in described coating layer, and phytic acid accounts for weight percent 14%.
With 1 part of dispersion agent, 0.8 part of flow agent, 0.5 part of defoamer, 0.6 part of anti-sagging agent, 2 parts of pigment, 2 parts of fillers, 25 parts of the iron micas of 350 order electrically conductive polyaniline modifications join in 20 parts of 55 parts of fluorocarbon resins and the solvents, stirred 20 minutes, and ground to form particle diameter less than 40 microns micaceous iron oxide anticorrosive coatings of making the modified polyaniline modification.
Embodiment 5
With 1 part of dispersion agent, 0.8 part of flow agent, 0.5 part of defoamer, 1 part of anti-sagging agent, 5 parts of pigment, 2 parts of fillers, 25 parts of the iron micas of 350 order electrically conductive polyaniline modifications add in 20 parts of 40 parts of Hydroxylated acrylic resins and the solvents, stirred 20 minutes, and ground to form particle diameter less than 40 microns micaceous iron oxide anticorrosive coatings of making the modified polyaniline modification.
Claims (7)
1. steel surface preparation method of anticorrosion paint is characterized in that: each composition of described coating forms to calculate by weight and comprises: filmogen 40-75 part, polyaniline modified micaceous iron oxide 20-40 part, pigment 1-5 part, filler 1-8 part, auxiliary agent 0.5-5 part, solvent 10-40 part.
2. a kind of steel surface preparation method of anticorrosion paint according to claim 1, it is characterized in that: described filmogen is Synolac, resol, Resins, epoxy, urethane resin, fluorocarbon resin, chlorinated polyvinyl chloride or chlorinatedpolyethylene; Synolac is short oil oleum lini glyptal, short oil oleum lini glycerine alcohol ester resin, medium-oil-length Thistle oil Synolac, long-oil-length tetramethylolmethane oleum lini Synolac; Resol comprises pure phenolic resin or the pure dissolubility resol that Abietyl modified resol, alkylphenol are made; Resins, epoxy is bisphenol A type epoxy resin, and wherein epoxy curing agent is amine curing agent, includes fatty amine, quadrol, aromatic amine or cycloaliphatic amines.
3. a kind of steel surface preparation method of anticorrosion paint according to claim 1, it is characterized in that: described solvent includes toluene, dimethylbenzene, butanols, butanone or pimelinketone.
4. a kind of steel surface preparation method of anticorrosion paint according to claim 1, it is characterized in that: described auxiliary agent includes anti-sagging agent, dispersion agent, flow agent and defoamer.
5. a kind of steel surface preparation method of anticorrosion paint according to claim 1, it is characterized in that: the structure of book polyaniline modified micaceous iron oxide is sheet structure, consisting of surface coating layer is polyaniline and phytic acid, inside is iron mica, polyaniline is 75-95% by weight percentage in the coating layer, phytic acid is 5-25% by weight percentage, and the particle diameter of described iron mica is the 1200-1500 order.
6. a kind of steel surface preparation method of anticorrosion paint according to claim 4, it is characterized in that: described anti-sagging agent is one or more combinations in wilkinite, polynite, kaolin or the aerosil.
7. a kind of steel surface preparation method of anticorrosion paint according to claim 1 is characterized in that: may further comprise the steps:
A, at first prepare the iron mica of modified polyaniline modification, its step comprises:
1), preparation phosphoric acid and phytic acid mixed aqueous solution, phosphatase 11-2.5 mol/L wherein, phytic acid 0.1-0.35 mol/L;
2), aniline is joined 1) mixing solutions in, mixed concentration of aniline is the 0.08-0.8 mol/L, continues to stir 0.5-2 hour, gets the 1200-1500 purpose iron mica that adds 70-150g in the 500ml mixed solution, and stirred 5-30 minute, be pre-chilled to 0-10 ℃;
3), the aqueous solution of preparation oxygenant, the concentration of oxygenant is the 0.2-1.5 mol/L in the solution, the aqueous solution of oxygenant is pre-chilled to 0-10 ℃, and wherein oxygenant is one or more combinations in ammonium persulphate, hydrogen peroxide, Potassium Persulphate or the benzoyl peroxide;
4), with 3) in 500ml solution slowly added 2 at 10-30 minute) in, 0-10 ℃ of reaction 2-5 hour, use distilled water wash after separating, and at 80-100 ℃ of dry 1-5 hour, grind, screening obtains the iron mica of 200-500 order electrically conductive polyaniline modification.
B, with auxiliary agent, pigment, filler join and stirred in filmogen and the solvent 10-60 minute, then mesh-of-grind is less than discharging after 50 microns;
C, under high-speed stirring, will be joined in the mixture of B by the polyaniline-modified iron mica that A obtains, carry out high speed dispersion 20-60 minute, obtain the MIO coating of modified polyaniline modification;
D, according to the corresponding solidifying agent of the different choice of filmogen.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103305058A (en) * | 2013-06-28 | 2013-09-18 | 江苏海田技术有限公司 | Composite resin coating |
| CN104004441A (en) * | 2014-06-06 | 2014-08-27 | 南昌航空大学 | Single-component epoxy primer and preparation method thereof |
| CN104404523A (en) * | 2014-11-07 | 2015-03-11 | 合肥大安印刷有限责任公司 | Oil-removing water-based antirust agent and preparation method thereof |
| CN104845516A (en) * | 2015-04-29 | 2015-08-19 | 湖北大学 | Antiseptic paint for automobile transmission shaft and preparation method of antiseptic paint |
| CN105331253A (en) * | 2015-12-04 | 2016-02-17 | 江苏建中能源科技有限公司 | Heavy-duty anti-corrosion paint for oceanographic engineering |
| CN105440828A (en) * | 2015-12-31 | 2016-03-30 | 王丽萍 | Environment-friendly antirust coating for metal products |
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| CN109207044A (en) * | 2018-09-06 | 2019-01-15 | 东北大学 | Modified polyaniline composite material and preparation method, the preparation method of corrosion-inhibiting coating |
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| CN101643618A (en) * | 2008-08-06 | 2010-02-10 | 中国科学院金属研究所 | Non-toxic polyaniline modified anti-corrosive coating and preparation method thereof |
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| CN101643620A (en) * | 2008-08-06 | 2010-02-10 | 中国科学院金属研究所 | Environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating and preparation method thereof |
| CN101643618A (en) * | 2008-08-06 | 2010-02-10 | 中国科学院金属研究所 | Non-toxic polyaniline modified anti-corrosive coating and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103305058A (en) * | 2013-06-28 | 2013-09-18 | 江苏海田技术有限公司 | Composite resin coating |
| CN103305058B (en) * | 2013-06-28 | 2015-06-10 | 江苏海田技术有限公司 | Composite resin coating |
| CN104004441A (en) * | 2014-06-06 | 2014-08-27 | 南昌航空大学 | Single-component epoxy primer and preparation method thereof |
| CN104004441B (en) * | 2014-06-06 | 2016-08-24 | 南昌航空大学 | A kind of Single-component epoxy primer and preparation method thereof |
| CN104404523A (en) * | 2014-11-07 | 2015-03-11 | 合肥大安印刷有限责任公司 | Oil-removing water-based antirust agent and preparation method thereof |
| CN104845516A (en) * | 2015-04-29 | 2015-08-19 | 湖北大学 | Antiseptic paint for automobile transmission shaft and preparation method of antiseptic paint |
| CN105331253A (en) * | 2015-12-04 | 2016-02-17 | 江苏建中能源科技有限公司 | Heavy-duty anti-corrosion paint for oceanographic engineering |
| CN105440828A (en) * | 2015-12-31 | 2016-03-30 | 王丽萍 | Environment-friendly antirust coating for metal products |
| CN106047049A (en) * | 2016-05-31 | 2016-10-26 | 无锡伊佩克科技有限公司 | Anticorrosive coating for ship hulls and method for preparing anticorrosive coating |
| CN107587137A (en) * | 2017-01-06 | 2018-01-16 | 青岛科技大学 | A kind of long-acting type antirust for metal surface turns rust agent |
| CN107587137B (en) * | 2017-01-06 | 2019-10-11 | 青岛科技大学 | A kind of long-acting type antirust for metal surface turn rust agent |
| CN107298923A (en) * | 2017-06-27 | 2017-10-27 | 四川理工学院 | A kind of polypyrrole/α Fe2O3The preparation method and application of modified anti-corrosive coating |
| CN107298923B (en) * | 2017-06-27 | 2019-11-08 | 四川理工学院 | A kind of polypyrrole/α-Fe2O3The preparation method and application of modified anti-corrosive coating |
| CN107746646A (en) * | 2017-09-30 | 2018-03-02 | 镇江中焱数控设备有限公司 | A kind of Digit Control Machine Tool anticorrosion paint special |
| CN107674552A (en) * | 2017-11-07 | 2018-02-09 | 苏州中科创新型材料股份有限公司 | One kind has corrosion-resistant coated steel sheet |
| CN109207044A (en) * | 2018-09-06 | 2019-01-15 | 东北大学 | Modified polyaniline composite material and preparation method, the preparation method of corrosion-inhibiting coating |
| CN109233622A (en) * | 2018-09-10 | 2019-01-18 | 江苏天泽教育咨询有限公司 | A kind of corrosion-resistant magnetic drive pump pump shaft |
| CN111471372A (en) * | 2020-05-15 | 2020-07-31 | 晋江市中德顺钢结构件工程发展有限公司 | Corrosion-resistant counterweight block casting and manufacturing method thereof |
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Application publication date: 20130102 |