CN102863881A - Steel-surface environment-friendly anticorrosive paint and preparation method thereof - Google Patents
Steel-surface environment-friendly anticorrosive paint and preparation method thereof Download PDFInfo
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- CN102863881A CN102863881A CN2012103438593A CN201210343859A CN102863881A CN 102863881 A CN102863881 A CN 102863881A CN 2012103438593 A CN2012103438593 A CN 2012103438593A CN 201210343859 A CN201210343859 A CN 201210343859A CN 102863881 A CN102863881 A CN 102863881A
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Abstract
The invention relates to a steel-surface environment-friendly anticorrosive paint and a preparation method thereof. The paint comprises the following components in parts by weight: 50-60 parts of film forming matter, 25-35 parts of polyaniline modified mica ferric oxide, 1-5 parts of pigment, 1-8 parts of filler, 0.5-5 parts of assistant and 20-30 parts of solvent. The steel-surface anticorrosive paint can form a passivation layer and a corrosion inhibition layer on the steel surface.
Description
Technical field
The present invention relates to coating technology, refer to especially a kind of steel surface environment friendly anti-corrosive paint and preparation method.
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 steel surface environment friendly anti-corrosive paint, each composition of described coating forms to calculate by weight and comprises: filmogen 50-60 part, polyaniline modified micaceous iron oxide 25-35 part, pigment 1-5 part, filler 1-8 part, auxiliary agent 0.5-5 part, solvent 20-30 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 80-90% by weight percentage in the coating layer, phytic acid is 10-20% 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 preparation method of steel surface environment friendly anti-corrosive 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 .5-2.0 mol/L wherein, phytic acid 0.35-0.8 mol/L; Described phosphoric acid is 4: 1 with the mol ratio of phytic acid;
2), aniline is joined 1) mixing solutions in, mixed concentration of aniline is the 0.1-0.6 mol/L, continues to stir 0.5-2 hour, gets the 1200-1500 purpose iron mica that adds 80-120g 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 at first 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 .5-2.0 mol/L wherein, phytic acid 0.35-0.8 mol/L; Described phosphoric acid is 4: 1 with the mol ratio of phytic acid;
2), aniline is joined 1) mixing solutions in, mixed concentration of aniline is the 0.1-0.6 mol/L, continues to stir 0.5-2 hour, gets the 1200-1500 purpose iron mica that adds 80-120g 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 steel surface environment friendly anti-corrosive paint, each composition of described coating forms to calculate by weight and comprises: filmogen 50-60 part, polyaniline modified micaceous iron oxide 25-35 part, pigment 1-5 part, filler 1-8 part, auxiliary agent 0.5-5 part, solvent 20-30 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 described polyaniline modified micaceous iron oxide is sheet structure, consisting of surface coating layer is polyaniline and phytic acid, inside is iron mica, polyaniline is 80-90% by weight percentage in the coating layer, phytic acid is 10-20% 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 0.40 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 90% in described coating layer, and phytic acid accounts for weight percent 10%.
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 50 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 60 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 55 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, phosphoric acid 2.0 mol/L wherein, phytic acid 0.5 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 100g 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 80% in described coating layer, and phytic acid accounts for weight percent 20%.
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 60 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 (10)
1. steel surface environment friendly anti-corrosive paint is characterized in that: each composition of described coating forms to calculate by weight and comprises: filmogen 50-60 part, polyaniline modified micaceous iron oxide 25-35 part, pigment 1-5 part, filler 1-8 part, auxiliary agent 0.5-5 part, solvent 20-30 part.
2. described steel surface environment friendly anti-corrosive 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.
3. described steel surface environment friendly anti-corrosive paint according to claim 2, it is characterized in that: 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.
4. described steel surface environment friendly anti-corrosive paint according to claim 2, it is characterized in that: resol comprises pure phenolic resin or the pure dissolubility resol that Abietyl modified resol, alkylphenol are made.
5. described steel surface environment friendly anti-corrosive paint according to claim 2, it is characterized in that: 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.
6. described steel surface environment friendly anti-corrosive paint according to claim 1, it is characterized in that: described solvent includes toluene, dimethylbenzene, butanols, butanone or pimelinketone.
7. described steel surface environment friendly anti-corrosive paint according to claim 1, it is characterized in that: described auxiliary agent includes anti-sagging agent, dispersion agent, flow agent and defoamer.
8. described steel surface environment friendly anti-corrosive 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 80-90% by weight percentage in the coating layer, phytic acid is 10-20% by weight percentage, and the particle diameter of described iron mica is the 1200-1500 order.
9. described steel surface environment friendly anti-corrosive paint according to claim 7, it is characterized in that: described anti-sagging agent is one or more combinations in wilkinite, polynite, kaolin or the aerosil.
10. the preparation method of a steel surface environment friendly anti-corrosive paint 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 .5-2.0 mol/L wherein, phytic acid 0.35-0.8 mol/L; Described phosphoric acid is 4: 1 with the mol ratio of phytic acid;
2), aniline is joined 1) mixing solutions in, mixed concentration of aniline is the 0.1-0.6 mol/L, continues to stir 0.5-2 hour, gets the 1200-1500 purpose iron mica that adds 80-120g 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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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104830206A (en) * | 2015-05-27 | 2015-08-12 | 湖州大周高分子材料有限公司 | Antiseptic paint for oil pipelines |
| CN104845516A (en) * | 2015-04-29 | 2015-08-19 | 湖北大学 | Antiseptic paint for automobile transmission shaft and preparation method of antiseptic paint |
| CN105331224A (en) * | 2015-12-15 | 2016-02-17 | 苏州鑫德杰电子有限公司 | High-adhesion polyaniline anticorrosive coating and preparation method thereof |
| CN106010161A (en) * | 2016-05-23 | 2016-10-12 | 江苏科祥防腐材料有限公司 | Water-based metal anti-corrosion material and preparation method thereof |
| CN106010160A (en) * | 2016-05-23 | 2016-10-12 | 江苏科祥防腐材料有限公司 | Water-based alcohol acid wheel hub finish paint and preparation method thereof |
| CN106318130A (en) * | 2015-06-15 | 2017-01-11 | 天长市开林化工有限公司 | High-performance epoxy resin heavy anti-corrosion paint |
| CN107400383A (en) * | 2016-05-19 | 2017-11-28 | 福建坤彩材料科技股份有限公司 | One kind is directly used in electrostatic powder coating pearlescent pigment and preparation method thereof |
| CN107502159A (en) * | 2017-10-24 | 2017-12-22 | 广西民族大学 | A kind of preparation method of efficient short oil-ity alcohol acid resin corrosive enamel |
| CN107573741A (en) * | 2017-10-24 | 2018-01-12 | 广西民族大学 | A kind of preparation method of efficient medium oil alkyd corrosive enamel |
| CN107603439A (en) * | 2017-10-24 | 2018-01-19 | 广西民族大学 | A kind of preparation method of efficient alkyd resin corrosive enamel |
| CN107629648A (en) * | 2017-10-24 | 2018-01-26 | 广西民族大学 | A kind of preparation method of efficient long oil alkyd corrosive enamel |
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| CN104845516A (en) * | 2015-04-29 | 2015-08-19 | 湖北大学 | Antiseptic paint for automobile transmission shaft and preparation method of antiseptic paint |
| CN104830206A (en) * | 2015-05-27 | 2015-08-12 | 湖州大周高分子材料有限公司 | Antiseptic paint for oil pipelines |
| CN106318130A (en) * | 2015-06-15 | 2017-01-11 | 天长市开林化工有限公司 | High-performance epoxy resin heavy anti-corrosion paint |
| CN105331224A (en) * | 2015-12-15 | 2016-02-17 | 苏州鑫德杰电子有限公司 | High-adhesion polyaniline anticorrosive coating and preparation method thereof |
| CN107400383A (en) * | 2016-05-19 | 2017-11-28 | 福建坤彩材料科技股份有限公司 | One kind is directly used in electrostatic powder coating pearlescent pigment and preparation method thereof |
| CN107400383B (en) * | 2016-05-19 | 2019-08-02 | 福建坤彩材料科技股份有限公司 | One kind being directly used in electrostatic powder coating pearlescent pigment and preparation method thereof |
| CN106010161A (en) * | 2016-05-23 | 2016-10-12 | 江苏科祥防腐材料有限公司 | Water-based metal anti-corrosion material and preparation method thereof |
| CN106010160B (en) * | 2016-05-23 | 2018-04-27 | 江苏科祥防腐材料有限公司 | A kind of water alcohol acid wheel hub finishing coat and preparation method thereof |
| CN106010160A (en) * | 2016-05-23 | 2016-10-12 | 江苏科祥防腐材料有限公司 | Water-based alcohol acid wheel hub finish paint and preparation method thereof |
| CN107502159A (en) * | 2017-10-24 | 2017-12-22 | 广西民族大学 | A kind of preparation method of efficient short oil-ity alcohol acid resin corrosive enamel |
| CN107573741A (en) * | 2017-10-24 | 2018-01-12 | 广西民族大学 | A kind of preparation method of efficient medium oil alkyd corrosive enamel |
| CN107603439A (en) * | 2017-10-24 | 2018-01-19 | 广西民族大学 | A kind of preparation method of efficient alkyd resin corrosive enamel |
| CN107629648A (en) * | 2017-10-24 | 2018-01-26 | 广西民族大学 | A kind of preparation method of efficient long oil alkyd corrosive enamel |
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Application publication date: 20130109 |