CN102533053A - Environmental-friendly waterborne epoxy zinc phosphate anti-corrosion paint for steel structures and preparation method thereof - Google Patents
Environmental-friendly waterborne epoxy zinc phosphate anti-corrosion paint for steel structures and preparation method thereof Download PDFInfo
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- CN102533053A CN102533053A CN2011104501176A CN201110450117A CN102533053A CN 102533053 A CN102533053 A CN 102533053A CN 2011104501176 A CN2011104501176 A CN 2011104501176A CN 201110450117 A CN201110450117 A CN 201110450117A CN 102533053 A CN102533053 A CN 102533053A
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- aqueous epoxy
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- steelwork
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Abstract
The invention belongs to the technical field of paint and particularly relates to environmental-friendly waterborne epoxy zinc phosphate anti-corrosion paint for steel structures and a preparation method of the environmental-friendly waterborne epoxy zinc phosphate anti-corrosion paint. The paint comprises an ingredient A and an ingredient B and is characterized in that the ingredient A consists of 25 to 40 weight parts of waterborne epoxy emulsion, 10 to 20 weight parts of rust-proof pigment, 5 to 15 weight parts of precipitated barium sulfate, 5 to 10 weight parts of mica powder, 5 to 10 weight parts of pigment, 0.5 to 2 weight parts of dispersing agents and 10 to 30 weight parts of water, and the ingredient B consists of 5 to 15 weight parts of curing agents, 1 to 5 weight parts of cosolvents and 3 to 8 weight parts of water, wherein the rust-proof pigment is compounded by zinc phosphate and aluminum triphosphate according to the weight ratio of 1:3, and the ingredient A and the ingredient B are mixed according to the weight ratio of 8:1. The paint belongs to the anti-corrosion paint with anti-corrosion and environmental-friendly effects in the field of the steel structures.
Description
Technical field
The invention belongs to technical field of coatings, particularly a kind of steelwork is with environment-friendly type aqueous epoxy phosphate zinc protective system and preparation method.
Background technology
At present, in anticorrosion of steel structure erosion field, iron and steel adopts solvent based coating basically with anticorrosive coating.Particularly being widely used of solvent epoxy varnish caused very big harm to environment and human body.Along with the raising day by day to environmental protection requirement, epoxy coating has turned to the solvent-borne formulation of low VOC from high VOC solvent-borne formulation.In order to reduce emission of harmful substances, the research and development steelwork use epoxy resin anticorrosive coating trend that is inevitable.
The R&D process of aqueous epoxy resins has been passed through 3 stages.
First-generation product is directly to carry out emulsification with emulsifying agent, under violent mechanical stirring, obtains emulsion particle, and the emulsion particle diameter that obtains like this is thicker, causes the film forming difficulty; And exist the free emulsifying agent in the emulsion, and can from film, separate out when meeting water, cause water-resistance property of coating bad, thereby restricted its application.
S-generation water-base epoxy is a water soluble solid agent oil in water emulsion dissolubility epoxy resin; The solidifying agent that the characteristics of this type aqueous epoxy resin systems are to use all is water miscible; When two components are mixing cured; Solidifying agent diffuses into the surperficial curative concentration of resin particle than higher from water, makes resin surface solidify to form duricrust easily, has stoped the film forming of resin particle; Finally make resin and solidifying agent in the paint film influence film performance because of skewness, thus solubility parameters not match be to influence the important factor that s-generation water-borne epoxy systems is promoted.The another kind of form of s-generation water-borne epoxy systems is to process resin the epoxy emulsion of aqueous dispersion type, and there is the solubility parameters mismatch problem equally in this system.Because epoxy resin is hydrophobic, and water miscible solidifying agent has very strong wetting ability, after two components are mixed, owing to existing great difference aspect hydrophilic and the hydrophobicity, thus influenced the film-forming properties of coating.
Third generation aqueous epoxy resins is the eighties of last century nineties, is researched and developed successfully for many years by U.S. Shell company warp.Its epoxy resin and solidifying agent have all connected non-ionics.After two components mixed, solubility parameters was close, and matching is good, was filmed uniformly after the curing, obtained good physical and mechanical property, chemical resistance, electrical insulation properties and adhesive property.
Aqueous epoxide resin paint is mainly used in following field at present: (1) concrete, cement flooring seal coat.Aqueous epoxy coating is constructed in concrete surface, and concrete surface is had good sticking power, and can prevent the accumulation of salt in the surface soil, and simultaneously water-base epoxy is filmed and had ventilation property, and has permeable characteristic, can overcome the problem that concrete, cement flooring get damp.(2) industry ground slab coating.The aqueous epoxy coating smell is little, wear resistance good, and coatingsurface is easy to clean, and is specially adapted to the place that hospital, food factory, supermarket, milk polant and Cosmetics Plant etc. need the low VOC of maintenance and highly clean.(3) wood lacquer field.The aqueous epoxy coating that adopts is a bicomponent system, has higher hardness and good scoring resistance behind the curing of coating, is made into varnish and can be used for wood floors, substitutes widely used in the market solvent borne polyurethane crystal like floor paint and polyester furniture lacquer etc.
But aqueous epoxide resin paint does not also have product application in anticorrosion of steel structure erosion field; Utilizing the good physical and mechanical property of aqueous epoxy resins, chemical resistance, electrical insulation properties and adhesive property, is that the industrial antisepsis erosion coating that base-material prepares has huge development prospect in the iron structure field with it.
Summary of the invention
The object of the present invention is to provide a kind of steelwork with environment-friendly type aqueous epoxy phosphate zinc protective system and preparation method; Mainly solve above-mentioned existing in prior technology technical problem, it is the anticorrosive coating that has protection against corrosion, environmentally friendly type at field of steel structure.
For realizing above-mentioned purpose, the present invention realizes like this.
A kind of steelwork is with environment-friendly type aqueous epoxy phosphate zinc protective system, and it has A, B two components; It is characterized in that: described A component is made up of aqueous epoxy emulsion 25-40 weight part, rust-stabilising pigment 10-20 weight part, process white 5-15 weight part, mica powder 5-10 weight part, pigment 5-10 weight part, dispersion agent 0.5-2 weight part and water 10-30 weight part; The B component is made up of solidifying agent 5-15 weight part, solubility promoter 1-5 and water 3-8 weight part; Wherein: described rust-stabilising pigment is that zn phosphate and aluminium triphosphate are composite, and weight proportion is 1:3; Described A, B two components are according to the mixed of weight ratio 8:1.
Described steelwork is characterized in that with environment-friendly type aqueous epoxy phosphate zinc protective system: described dispersion agent is special modified polycarboxylic acid sylvite.
Described steelwork is characterized in that with environment-friendly type aqueous epoxy phosphate zinc protective system: described pigment is the pigment with opacifying power.
Described steelwork is characterized in that with environment-friendly type aqueous epoxy phosphate zinc protective system: described pigment is white titanium pigment or iron oxide red mill base.
Described steelwork is characterized in that with environment-friendly type aqueous epoxy phosphate zinc protective system: described aqueous epoxy emulsion is the liquid or solid epoxy resin dispersion.
Described steelwork is characterized in that with environment-friendly type aqueous epoxy phosphate zinc protective system: described solidifying agent is the fatty amine aqueous dispersion that carries out after end-blocking, the addition.
Described steelwork is characterized in that with environment-friendly type aqueous epoxy phosphate zinc protective system: described solubility promoter is DPnB, DPM or propylene glycol monomethyl ether.
A kind of aforesaid steelwork is with the preparation method of environment-friendly type aqueous epoxy phosphate zinc protective system; It is characterized in that: concrete steps are (1) A component preparation: under the 500-1500r/min rotating speed, add entry, rust-stabilising pigment, process white, mica powder, pigment, dispersion agent successively with high speed dispersor; Blending dispersion to fineness reaches the following form slurry of 70 orders; Under 500r/min-800r/min stir speed (S.S.), add aqueous epoxy emulsion then, stir; Slaking obtains the A component after the filtration; (2) B component preparation: under high speed dispersor, solidifying agent, solubility promoter, water are mixed in proportion; (3) with A, B two components mixed, in container, mix, obtain steelwork with environment-friendly type aqueous epoxy phosphate zinc anticorrosive coating according to mass ratio 8:1.
The performance of gained coating is following:
Time of drying, surface drying/h 1
Do solid work/h≤24
Shock resistance/kgcm 50
Sticking power/level 1
Snappiness/mm 1
Pencil hardness/H 2
1000h is no abnormal for salt water resistance (3%NaCl).
The steelwork of the present invention's development is with environment-friendly type aqueous epoxy phosphate zinc anticorrosive coating; Have acid and alkali-resistance, oils, chemical mediator and good sticking power is arranged with steel substrate; Simultaneously this coating with water as dispersion medium; Odorlessness, do not fire, be prone to store, transportation, improved the security of coating use greatly.Material therefor of the present invention is the commercially available prod that is easy to buy, and can not restrict the suitability for industrialized production of environment-friendly type aqueous epoxy phosphate zinc anticorrosive coating.
The steelwork of the present invention's development is with in the environment-friendly type aqueous epoxy phosphate zinc anticorrosive coating prescription, and the selection of rust-stabilising pigment and consumption are related to the Corrosion Protection of coating.Select zn phosphate [Zn among the present invention for use
3(PO
4)
2] and aluminium triphosphate (AlH
2P
3O
102H
2O) 1:3's is best composite, the phosphate ion that the zn phosphate hydrolysis is generated, the Fe of it and metallic surface
3+Form the zinc iron phosphate complex compound Fe [Zn of adhere firmly
3(PO
4)
3] beds of precipitation suppress anodic reaction (anodic polarization); The OH in zine ion and cathodic area
-Reaction generates very little zinc hydroxide of solvability or basic zinc salt and plays the cathodic polarization effect; The condensed phosphate tripolymer is to Fe
3+Has very strong complex ability, tripolyphosphate radical ion P
3O
10 5
- With the steel substrate anodic reaction, forming with tripolyphosphate iron is the protective membrane of master's complicacy.These the two kinds of rust-stabilising pigment performance stacks of zn phosphate and aluminium triphosphate, the fine and close purification membrane of formation is water insoluble, and hardness is high, and sticking power is excellent, makes water-base epoxy zn phosphate protective system have remarkable Corrosion Protection.
Embodiment
Further specify the present invention through embodiment below.
EXAMPLE l:
Unit takes by weighing following raw materials according by weight: aqueous epoxy emulsion (liquid epoxies dispersion-s E20) 25 weight parts, process white 15 weight parts, rust-stabilising pigment 20 weight parts (rust-stabilising pigment is that zn phosphate and aluminium triphosphate are composite, and weight proportion is 1:3), mica powder 5 weight parts, iron oxide red mill base 5 weight parts, dispersion agent (COADIS 123K) 2 weight parts and water 30 weight parts.
Under high-speed stirring; Successively with 70 microns following form slurry of blending dispersion to fineness such as rust-stabilising pigment, mica powder, pigment, process white, dispersion agent and water; Under the 500r/min-800r/min stir speed (S.S.), add aqueous epoxy emulsion again, stir, obtain the A component after the filtration.
Get fatty amine aqueous dispersion (AB-HGA) 5 weight parts, water 3 weight parts, propylene glycol monomethyl ether 1.0 weight parts that carry out after end-blocking, the addition and be made into the B component.
Stir A, B two components according to the mixed of weight ratio 8:1 then; Slaking 15 minutes, the steelwork that promptly obtains directly constructing are brushed this coating or be sprayed on the tinplate tin sheet with environment-friendly type aqueous epoxy phosphate zinc anticorrosive coating; The 20 minutes surface dryings of filming; 30 microns of coating thicknesses, filming in a dry week can completely solidified, the test film performance:
The test event test result
Time of drying, surface drying/min 20
Do solid work/h 2
Shock resistance/kgcm 50
Sticking power/level (drawing lattice 1mm) 0
Snappiness/mm 1
Pencil hardness/H 3
1000h is no abnormal for salt water resistance (3%NaCl).
Embodiment 2:
Unit takes by weighing following raw materials according by weight: aqueous epoxy emulsion (liquid epoxies dispersion-s E51) 40 weight parts, rust-stabilising pigment (rust-stabilising pigment is that zn phosphate and aluminium triphosphate are composite, and weight proportion is 1:3) 10 weight parts, mica powder 10 weight parts, titanium white mill base 10 weight parts, process white 5 weight parts, dispersion agent (COADIS 123K) 0.5 weight part and water 10 weight parts.
Under high-speed stirring; Successively with 70 microns following form slurry of blending dispersion to fineness such as rust-stabilising pigment, mica powder, pigment, process white, dispersion agent and water; Under the 500r/min-800r/min stir speed (S.S.), add aqueous epoxy emulsion again, stir, obtain the A component after the filtration.
Get fatty amine aqueous dispersion (703) 15 weight parts, water 8 weight parts, propylene glycol monomethyl ether 5 weight parts that carry out after end-blocking, the addition, mix being made into the B component.
Stir A, B two components according to the mixed of weight ratio 8:1 then; Slaking 15 minutes, the steelwork that promptly obtains directly constructing are brushed this coating or be sprayed on the tinplate tin sheet with environment-friendly type aqueous epoxy phosphate zinc anticorrosive coating; The 30 minutes surface dryings of filming; 30 microns of coating thicknesses, filming in a dry week can completely solidified, the test film performance:
The test event test result
Time of drying, surface drying/min 30
Do solid work/h 12
Shock resistance/kgcm 50
Sticking power/level (drawing lattice 1mm) 0
Snappiness/mm 1
Pencil hardness/H 3
1000h is no abnormal for salt water resistance (3%NaCl).
Each component can also produce following variation in the embodiments of the invention:
Among the present invention, described dispersion agent is special modified polycarboxylic acid sylvite.
Among the present invention, described pigment is the pigment with opacifying power.
Among the present invention, described aqueous epoxy emulsion is the liquid or solid epoxy resin dispersion, as: E20, E44, E51, solidifying agent are the fatty amine aqueous dispersion that carries out after end-blocking, the addition, like AB-HGA, 703 etc.
Among the present invention, described solubility promoter is DPnB, DPM or propylene glycol monomethyl ether.
Being merely preferred embodiment of the present invention in sum, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of claim of the present invention change and modification, all should be technological category of the present invention.
Claims (8)
1. a steelwork is with environment-friendly type aqueous epoxy phosphate zinc protective system, and it has A, B two components; It is characterized in that: described A component is made up of aqueous epoxy emulsion 25-40 weight part, rust-stabilising pigment 10-20 weight part, process white 5-15 weight part, mica powder 5-10 weight part, pigment 5-10 weight part, dispersion agent 0.5-2 weight part and water 10-30 weight part; The B component is made up of solidifying agent 5-15 weight part, solubility promoter 1-5 and water 3-8 weight part; Wherein: described rust-stabilising pigment is that zn phosphate and aluminium triphosphate are composite, and weight proportion is 1:3; Described A, B two components are according to the mixed of weight ratio 8:1.
2. steelwork according to claim 1 is characterized in that with environment-friendly type aqueous epoxy phosphate zinc protective system: described dispersion agent is special modified polycarboxylic acid sylvite.
3. steelwork according to claim 1 is characterized in that with environment-friendly type aqueous epoxy phosphate zinc protective system: described pigment is the pigment with opacifying power.
4. steelwork according to claim 3 is characterized in that with environment-friendly type aqueous epoxy phosphate zinc protective system: described pigment is white titanium pigment or iron oxide red mill base.
5. steelwork according to claim 1 is characterized in that with environment-friendly type aqueous epoxy phosphate zinc protective system: described aqueous epoxy emulsion is the liquid or solid epoxy resin dispersion.
6. steelwork according to claim 1 is characterized in that with environment-friendly type aqueous epoxy phosphate zinc protective system: described solidifying agent is the fatty amine aqueous dispersion that carries out after end-blocking, the addition.
7. steelwork according to claim 1 is characterized in that with environment-friendly type aqueous epoxy phosphate zinc protective system: described solubility promoter is DPnB, DPM or propylene glycol monomethyl ether.
8. one kind like claim 1 or 2 or 3 or 4 or 5 or the 6 or 7 described steelwork preparation method with environment-friendly type aqueous epoxy phosphate zinc protective system; It is characterized in that: concrete steps are (1) A component preparation: under the 500-1500r/min rotating speed, add entry, rust-stabilising pigment, process white, mica powder, pigment, dispersion agent successively with high speed dispersor; Blending dispersion to fineness reaches the following form slurry of 70 orders; Under 500r/min-800r/min stir speed (S.S.), add aqueous epoxy emulsion then, stir; Slaking obtains the A component after the filtration; (2) B component preparation: under high speed dispersor, solidifying agent, solubility promoter, water are mixed in proportion; (3) with A, B two components mixed, in container, mix, obtain steelwork with environment-friendly type aqueous epoxy phosphate zinc anticorrosive coating according to mass ratio 8:1.
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| CN201110450117.6A CN102533053B (en) | 2011-12-29 | 2011-12-29 | Environmental-friendly waterborne epoxy zinc phosphate anti-corrosion paint for steel structures and preparation method thereof |
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| CN201110450117.6A CN102533053B (en) | 2011-12-29 | 2011-12-29 | Environmental-friendly waterborne epoxy zinc phosphate anti-corrosion paint for steel structures and preparation method thereof |
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Cited By (9)
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| CN102993906A (en) * | 2012-11-28 | 2013-03-27 | 天长市开林化工有限公司 | Waterborne epoxy antirust paint and preparation method |
| CN103146284A (en) * | 2012-12-21 | 2013-06-12 | 新疆红山涂料有限公司 | Water-based epoxy anti-corrosion primer coatings |
| CN104031527A (en) * | 2014-06-24 | 2014-09-10 | 眉山新彩涂料有限责任公司 | Environment-friendly water-soluble metal anti-corrosive paint and preparation method thereof |
| CN104231864A (en) * | 2014-10-11 | 2014-12-24 | 江苏华夏制漆科技有限公司 | Waterborne epoxy micaceous iron antirust primer with rust and preparation method thereof |
| CN104371485A (en) * | 2014-10-31 | 2015-02-25 | 无锡阳工机械制造有限公司 | Coating for inner wall of water supply pipe |
| CN104371486A (en) * | 2014-10-31 | 2015-02-25 | 无锡阳工机械制造有限公司 | Coating for inner wall of water supply pipe |
| CN104530911A (en) * | 2014-12-31 | 2015-04-22 | 厦门双瑞船舶涂料有限公司 | Preparation method for high-performance water-based environmentally-friendly anticorrosive paint used for metal base material |
| CN104673059A (en) * | 2015-02-16 | 2015-06-03 | 河南省金凤化工有限公司 | Water-based epoxy acrylic resin anticorrosive paint and preparation method thereof |
| CN110894391A (en) * | 2019-11-21 | 2020-03-20 | 无锡市太湖防腐材料有限公司 | Long-acting acid and alkali corrosion resistant water-based epoxy anticorrosive paint and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102993906A (en) * | 2012-11-28 | 2013-03-27 | 天长市开林化工有限公司 | Waterborne epoxy antirust paint and preparation method |
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| CN103146284A (en) * | 2012-12-21 | 2013-06-12 | 新疆红山涂料有限公司 | Water-based epoxy anti-corrosion primer coatings |
| CN104031527A (en) * | 2014-06-24 | 2014-09-10 | 眉山新彩涂料有限责任公司 | Environment-friendly water-soluble metal anti-corrosive paint and preparation method thereof |
| CN104031527B (en) * | 2014-06-24 | 2016-06-01 | 眉山新彩涂料有限责任公司 | A kind of environment-friendly type aqueous anti-corrosion of metal paint and its preparation method |
| CN104231864A (en) * | 2014-10-11 | 2014-12-24 | 江苏华夏制漆科技有限公司 | Waterborne epoxy micaceous iron antirust primer with rust and preparation method thereof |
| CN104371485A (en) * | 2014-10-31 | 2015-02-25 | 无锡阳工机械制造有限公司 | Coating for inner wall of water supply pipe |
| CN104371486A (en) * | 2014-10-31 | 2015-02-25 | 无锡阳工机械制造有限公司 | Coating for inner wall of water supply pipe |
| CN104530911A (en) * | 2014-12-31 | 2015-04-22 | 厦门双瑞船舶涂料有限公司 | Preparation method for high-performance water-based environmentally-friendly anticorrosive paint used for metal base material |
| CN104673059A (en) * | 2015-02-16 | 2015-06-03 | 河南省金凤化工有限公司 | Water-based epoxy acrylic resin anticorrosive paint and preparation method thereof |
| CN110894391A (en) * | 2019-11-21 | 2020-03-20 | 无锡市太湖防腐材料有限公司 | Long-acting acid and alkali corrosion resistant water-based epoxy anticorrosive paint and preparation method thereof |
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