CN105585939B - A kind of coatings with rust transformation and preparation method thereof - Google Patents
A kind of coatings with rust transformation and preparation method thereof Download PDFInfo
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- CN105585939B CN105585939B CN201610154870.3A CN201610154870A CN105585939B CN 105585939 B CN105585939 B CN 105585939B CN 201610154870 A CN201610154870 A CN 201610154870A CN 105585939 B CN105585939 B CN 105585939B
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- rust
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- corrosion inhibiter
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- epoxy resin
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The present invention devises a kind of coatings with rust transformation and preparation method thereof, belongs to anti-corrosive metal coating field.There are the coatings of rust transformation, it is characterised in that:The nano container for encapsulating converting agent of iron rust and corrosion inhibiter is distributed in epoxy resin; converting agent of iron rust in coating can be before corrosion inhibiter forms a film loose rust transformation; make the corrosion inhibiter that coatings discharge directly in the protective film of carbon steel Surface Creation densification, so as to greatly enhance the protecting effect of coatings.There is the preparation method of the coatings of rust transformation, it is characterized in that, the nano container of the nano container for encapsulating converting agent of iron rust, encapsulation corrosion inhibiter is distributed in epoxy resin, above-mentioned epoxy resin and a certain amount of epoxy curing agent, dispersant, diluent, antifoaming agent are mixed and made into coating, above-mentioned coating is formed to the coatings with rust transformation coated in carbon steel surface.
Description
Technical field
The present invention relates to a kind of coatings with rust transformation and preparation method thereof, belong to anti-corrosion of metal painting
Layer field.
Background technology
Organic anti-corrosive coating be by organic coating and functional filler by certain method coated in metal surface and
The protection film layer of formation.Coating in the long-term use, can by wearing, wearing away and denuding, easily occur bubbling, pin hole and
Phenomena such as micro-crack, so that the metal of small area in corrosive medium, triggers local corrosion, coating is caused to lose in advance
Effect.In recent years, people increase year by year for the research of Smart self-repairing corrosion-inhibiting coating, during such coating breaks down, are dispersed in coating
In functional microsphere or nano container can discharge consolidant or corrosion inhibiter, metal surface generate protective film, prevent or subtract
Slow corrosion of metal process.Coatings become a kind of novel and effective method for improving coating antiseptic effect.White etc.
Damaged high molecular material is repaired using the opening of bicyclopentadiene and Grubbs catalyst.Hereafter, researchers
Self-repair technology is applied to corrosion-inhibiting coating field, and has obtained rapid development.
At present, the research in relation to selfreparing corrosion-inhibiting coating can substantially be divided into two classes:One kind be using polymer microsphere or
Nano container encapsulates polymerizer, polymerizer such as bicyclopentadiene, epoxy resin, isocyanates, linseed oil etc. in catalyst or
Under the action of curing agent, the reactions generation high molecular polymer such as hydrolysis, crosslinking and polymerization occurs and crams at the micro-crack of coating,
Isolate Korrosionsmedium and metal, play corrosion-resistant effect;Another kind of is to utilize polymer microsphere or nano container encapsulation inhibition
Agent is simultaneously distributed it in coating.The electron-donating groups such as N, S, O in inhibitor molecular and metal form co-ordinate covalent bond and produce
Biochemical absorption;Charged corrosion inhibiter group generates physical absorption with the metal with opposite charges;Physical absorption and chemistry are inhaled
Attached collective effect makes micro inhibitor molecular be covered in metal surface, is contacted at protective coating micro-crack with corrosive medium
Metallic matrix.
In general, the self-repair procedure of corrosion-inhibiting coating includes following steps:(1)Micro-crack is generated after coating breaks down;(2)
Inhibitor molecular is discharged from high molecular polymer microballoon or nano container;(3)Inhibitor molecular is migrated to metal surface;(4)
Inhibitor molecular forms protective film in metal surface.In practical applications, there is the problems with urgently to be resolved hurrily:Coating is in corrosive environment
After middle rupture, metal contacts with water, oxygen and chlorion and electrochemical corrosion reaction, the speed ratio above-mentioned steps of the reaction occurs
(3)And step(4)Soon, this results in corrosion inhibiter first to be adsorbed with corrosion product.Carbon steel Initial Corrosion product in the seawater
Structure is than more loose, and the protective film that corrosion inhibiter covering is generated in the above is not fine and close, and protecting effect can be greatly lowered.Therefore, exist
Before corrosion inhibiter film forming that loose rust transformation is critically important, this can make the corrosion inhibiter that coatings discharge directly in carbon steel table
The fine and close protective film of face generation, so as to greatly enhance the protecting effect of coatings.
The content of the invention
Present invention proposition is a kind of to have the function of the coatings of rust transformation, passes through and encapsulation iron rust turn is added into coating
The nano container of agent and corrosion inhibiter makes coating have both rust transformation and the function of selfreparing, another object of the present invention is to
A kind of preparation method with the coatings of rust transformation is provided, this method preparation process is simple, at low cost, peace
Loopful is protected.
To achieve the above object, the technical solution adopted by the present invention is:It is a kind of there is rust transformation review one's lessons by oneself overcoating
The nano container for encapsulating converting agent of iron rust and corrosion inhibiter is distributed in epoxy resin by layer, ensures to generate in corrosion inhibiter and metal
It is fine and close protective film by rust transformation before protective film.
A kind of preparation method with the coatings of rust transformation, comprises the following steps:
(1)The nano container of encapsulation converting agent of iron rust is prepared using LBL self-assembly method;
(2)The nano container of encapsulation corrosion inhibiter is prepared using LBL self-assembly method;
(3)The nano container of the nano container for encapsulating converting agent of iron rust, encapsulation corrosion inhibiter is distributed in epoxy resin;
(4)Above-mentioned epoxy resin is mixed into system with a certain amount of epoxy curing agent, dispersant, diluent, antifoaming agent
Into coating;
(5)Above-mentioned coating is formed to the coatings with rust transformation coated in carbon steel surface.
Preferably, the step(1)The preparation process of nano container for encapsulating converting agent of iron rust is:
Take the Nano-meter SiO_2 that mass fraction is 5-10%2Dispersion liquid, the polyethyleneimine with 2-10g/L(PEI)Solution mixes,
Uniform stirring, centrifugation, obtain SiO2/PEI.Take SiO2The tannic acid of/PEI particles and 0.1-10g/L(TA)Solution mixes,
Uniform stirring, centrifugation, obtain SiO2/PEI/TA;It repeats the above steps three times, obtains encapsulation converting agent of iron rust tannic acid
Nano container.
Preferably, the step(2)The preparation process of nano container for encapsulating corrosion inhibiter is:
Take the Nano-meter SiO_2 that mass fraction is 5-10%2Dispersion liquid, the polyethyleneimine with 2-10g/L(PEI)Solution mixes,
Uniform stirring, centrifugation, obtain SiO2/PEI.Take SiO2The corrosion inhibiter of/PEI particles and 0.1-2g/L(INH)Solution mixes,
Uniform stirring, centrifugation, obtain SiO2/PEI/INH;It repeats the above steps three times, obtains the nano container of encapsulation corrosion inhibiter.
Preferably, the step(2)In corrosion inhibiter using benzotriazole, 8-hydroxyquinoline and poly-aspartate etc.
The mixture of several corrosion inhibiter.
Preferably, the step(3)In encapsulation converting agent of iron rust nano container and encapsulation corrosion inhibiter nanometer hold
The mass ratio of device is 1:1.
Preferably, the step(3)The nano container of middle encapsulation corrosion inhibiter and the mass ratio of epoxy resin are 1:10-
20。
Preferably, the step(4)The mass ratio of epoxy resin curing agent and epoxy resin is 1:2.
Advantageous effect of the present invention is:
The present invention has the function of the coatings of rust transformation, and the converting agent of iron rust in coating can form a film in corrosion inhibiter
It is preceding to make corrosion inhibiter that coatings discharge directly in the protective film of carbon steel Surface Creation densification loose rust transformation, from
And greatly enhance the protecting effect of coatings.
The present invention has the function of the preparation method of the coatings of rust transformation, and manufacturing process is simple, and coating process is not
It is pollution-free using toxic organic solvent.
The present invention has the function of that the coatings of rust transformation are adapted to ocean engineering and are often prevented with the corrosion of carbon steel material
Shield, the exploitation for marine steel structure coating new technology provide guidance, have broad application prospects.
Description of the drawings
It is being simulated after the Q235 carbon steel electrode test piece cuts for the coating coatings that Fig. 1 provides for the embodiment of the present invention 1
In seawater 96 it is small when AC impedance spectroscopy, as can be seen from the figure as time went on, the impedance radius of coating gradually increases,
Show good self-healing properties.
Specific embodiment
With reference to Figure of description, the invention will be further described, and protection scope of the present invention is not only limited to
Following embodiment.
Embodiment 1
Take the Nano-meter SiO_2 that mass fraction is 5%2Dispersion liquid, the polyethyleneimine with 5g/L(PEI)Solution mixes, and uniformly stirs
It mixes, centrifuge, obtain SiO2/PEI.Take SiO2The tannic acid of/PEI particles and 1g/L(TA)Solution mix, uniform stirring, from
The heart separates, and obtains SiO2/PEI/TA;It repeats the above steps three times, obtains the nano container of encapsulation converting agent of iron rust tannic acid.
Take the Nano-meter SiO_2 that mass fraction is 5%2Dispersion liquid, the polyethyleneimine with 5g/L(PEI)Solution mixes, and uniformly stirs
It mixes, centrifuge, obtain SiO2/PEI.Take SiO2The corrosion inhibiter of/PEI particles and 1g/L(INH)Solution mix, uniform stirring, from
The heart separates, and obtains SiO2/PEI/INH;It repeats the above steps three times, obtains the nano container of encapsulation corrosion inhibiter.
The nano container 1g of above-mentioned encapsulation converting agent of iron rust is taken, encapsulates the nano container 1g of corrosion inhibiter, epoxy resin 10g,
It is distributed in epoxy resin;It adds 5g epoxy curing agents and is mixed and made into coating;
Above-mentioned coating is formed to the self-healing coating with rust transformation coated in Q235 carbon steels surface.
Embodiment 2
Take the Nano-meter SiO_2 that mass fraction is 10%2Dispersion liquid, the polyethyleneimine with 5g/L(PEI)Solution mixes, uniformly
Stirring centrifuges, and obtains SiO2/PEI.Take SiO2The tannic acid of/PEI particles and 1g/L(TA)Solution mixes, uniform stirring,
It centrifuges, obtains SiO2/PEI/TA;It repeats the above steps three times, obtains the nano container of encapsulation converting agent of iron rust tannic acid.
Take the Nano-meter SiO_2 that mass fraction is 10%2Dispersion liquid, the polyethyleneimine with 5g/L(PEI)Solution mixes, uniformly
Stirring centrifuges, and obtains SiO2/PEI.Take SiO2The corrosion inhibiter of/PEI particles and 1g/L(INH)Solution mixes, uniform stirring,
It centrifuges, obtains SiO2/PEI/INH;It repeats the above steps three times, obtains the nano container of encapsulation corrosion inhibiter.
The nano container 1g of above-mentioned encapsulation converting agent of iron rust is taken, encapsulates the nano container 1g of corrosion inhibiter, epoxy resin 20g,
It is distributed in epoxy resin;It adds 10g epoxy curing agents and is mixed and made into coating;
Above-mentioned coating is formed to the coatings with rust transformation coated in Q235 carbon steels surface.
Claims (6)
1. a kind of have the function of the coatings of rust transformation, it is characterised in that will encapsulate receiving for converting agent of iron rust and corrosion inhibiter
Rice container is distributed in epoxy resin, is ensured before corrosion inhibiter and metal generation protective film, is fine and close guarantor by rust transformation
Cuticula specifically includes following steps:(1)The nano container of encapsulation converting agent of iron rust is prepared using LBL self-assembly method;(2)Using
LBL self-assembly method prepares the nano container of encapsulation corrosion inhibiter;(3)Nano container, the encapsulation corrosion inhibiter of converting agent of iron rust will be encapsulated
Nano container be distributed in epoxy resin;(4)By above-mentioned epoxy resin and a certain amount of epoxy curing agent, dispersant,
Diluent, antifoaming agent are mixed and made into coating;(5)Above-mentioned coating is formed coated in carbon steel surface has the function of oneself of rust transformation
Reparation.
2. there is the preparation method of the coatings of rust transformation, which is characterized in that prepare using LBL self-assembly method
The nano container of converting agent of iron rust and the nano container of encapsulation corrosion inhibiter are encapsulated, the nano container and envelope of converting agent of iron rust will be encapsulated
The nano container of dress corrosion inhibiter is distributed in epoxy resin, and epoxy resin and a certain amount of epoxy curing agent are mixed
Coating is formed the coatings with rust transformation by coating coated in carbon steel surface.
3. the preparation method with the coatings of rust transformation according to claim 2, which is characterized in that institute
The corrosion inhibiter stated uses the mixture of benzotriazole, 8-hydroxyquinoline and poly-aspartate.
4. the preparation method with the coatings of rust transformation according to claim 2, which is characterized in that institute
The mass ratio of the nano container for the encapsulation converting agent of iron rust stated and the nano container of encapsulation corrosion inhibiter is 1:1.
5. the preparation method with the coatings of rust transformation according to claim 2, which is characterized in that institute
The nano container of encapsulation corrosion inhibiter and the mass ratio of epoxy resin stated are 1:10-20.
6. the preparation method with the coatings of rust transformation according to claim 2, which is characterized in that institute
The epoxy curing agent and the mass ratio of epoxy resin stated are 1:2.
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Families Citing this family (5)
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CN107446464B (en) * | 2017-07-20 | 2019-07-19 | 中国科学院过程工程研究所 | Polymeric coating material and preparation method with Corrosion monitoring and self-repair function |
CN110835488B (en) * | 2018-08-16 | 2021-11-16 | 中国科学院宁波材料技术与工程研究所 | Coating based on graphene nano container, self-repairing coating and preparation method and application thereof |
JP6925680B2 (en) * | 2018-08-16 | 2021-08-25 | 中国科学院▲寧▼波材料技▲術▼▲与▼工程研究所Ningbo Institute Of Materials Technology & Engineering,Chinese Academy Of Sciences | How to make paint and how to prepare self-healing coating layer |
CN114507468B (en) * | 2020-11-16 | 2022-12-13 | 天津大学 | Magnesium alloy surface photo-thermal self-repairing coating and preparation method thereof |
CN113773709A (en) * | 2021-09-03 | 2021-12-10 | 北京科技大学 | Self-warning and self-repairing dual-functional coating based on natural polyphenol filler and preparation |
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CN101613543A (en) * | 2009-07-20 | 2009-12-30 | 北京科技大学 | A kind of preparation method with coating of metal surface corrosion inhibition and self-repair function |
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2016
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Patent Citations (3)
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EP0291260A2 (en) * | 1987-05-11 | 1988-11-17 | Morton International, Inc. | Aqueous epoxy resin compositions and metal substrates coated therewith |
CN101613543A (en) * | 2009-07-20 | 2009-12-30 | 北京科技大学 | A kind of preparation method with coating of metal surface corrosion inhibition and self-repair function |
CN104927583A (en) * | 2015-07-06 | 2015-09-23 | 江苏固格澜栅防护设施有限公司 | Preparation method and application of intelligent anti-corrosion coating capable of being automatically repaired |
Non-Patent Citations (1)
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