CN106433409A - Intelligent anticorrosive and self-repairing coating and preparation method thereof - Google Patents
Intelligent anticorrosive and self-repairing coating and preparation method thereof Download PDFInfo
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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
- C09D163/10—Epoxy resins modified by unsaturated compounds
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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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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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
- 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
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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
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- 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
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Abstract
The invention discloses an intelligent anticorrosive and self-repairing coating and a preparation method thereof. The intelligent anticorrosive and self-repairing coating is prepared from the following components: waterborne epoxy resin, a curing agent polyamide, an intelligent anticorrosive and self-repairing component, rutile titanium dioxide, a dispersant 5040, a thickening agent SN-636 and a flatting agent BYK333. The preparation method comprises the following steps: firstly, carrying out in-suit polymerization on urea, a formaldehyde solution, resorcinol and ammonium chloride in a Chinese tallow kernel oil emulsification solution; after carrying out repeated filtering, washing, drying and crushing, obtaining core-shell-structured microcapsules with Chinese tallow kernel oil covered by urea formaldehyde resinand taking the core-shell-structured microcapsules as the intelligent anticorrosive and self-repairing component; and uniformly doping the intelligent anticorrosive and self-repairing component into a waterborne epoxy resin matrix, and spraying or brushing or spin-coating on a metal matrix to obtain the coating. The intelligent self-repairing coating disclosed by the invention has a good saline resisting performance, high adhesion, a good flash-rust resisting effect, a high anticorrosive capability and a long service life; and a preparation process is simple, the price is low and the raw materials are green and environment-friendly.
Description
Technical field
The invention belongs to corrosion-inhibiting coating technical field, more particularly to a kind of intelligent anti-corrosion coatings and its preparation side
Method.
Background technology
Epoxy resin is to refer to the organic high molecular compound containing two or more epoxide groups in molecule, except indivedual
Outward, its relative molecular mass is not high.The molecular structure of epoxy resin is to contain active epoxide group with strand for it
Feature, epoxide group may be located at the end of strand, middle or circlewise structure.Wherein, bisphenol A type epoxy resin, is should
With one of most commonly used epoxy resin, bonding force height, shrinkage factor is low, excellent heat resistance, and mechanical strength is high, and processing characteristics is good
Good, the thermosetting resin of high comprehensive performance, it can be both economical, using effect as the priming paint of anticorrosive paint, intermediate coat and finish paint
Really excellent, in petrochemical industry, automobile mechanical, space flight and aviation, the field such as civil construction, it is widely used.But it also has
Shortcoming, such as poor toughness, easy efflorescence, weatherability are poor, ability of being able to bear strong corrosion under high temperature, be easily peeled and ftracture and shock resistance is poor.
For retaining the advantage of its own, improve and strengthen the anti-corrosive properties under its toughness and high temperature, epoxy in available epoxy molecule
Base and the reaction of hydroxyl, are modified to epoxy resin thus improving its toughness, weatherability etc..
Water paint is the coating using water as solvent (or as decentralized medium), has nontoxic, tasteless, price low
The features such as honest and clean, raw material resources enriches, can greatly reduce the cost of raw material, and the pollution that air is caused；And can pole
The earth improves security in storage, transport and work progress for the coating.
At present, abroad some companies, in polymer emulsion synthesis, using the self-emulsifying technology of surfactant-free, that is, use
Other specific polymerization techniques make the polymer of multiple different monomers compositions be present in same micelle in layer structure, thus reaching
To adjusting vitrification point (Tg) it is ensured that the purpose of properties of product, make product both have certain hardness, stain resistance, make again
Construction is easy to carry out.In addition, painting is improved by the prepared polymer emulsion such as stereospecfic polymerization, radiation polymerization, latex interpenetrating polymerization
The performance of material and function.
And the developing direction of domestic water-based anticorrosive paint is mainly three below aspect：(1) waterborne zinc-rich primer：Inorganic richness
Yellow zinc chromate primer paint and epoxy zinc rich primer are one of long-acting priming paint, but it is solvent based coating.Modified Portland with high mode
Waterborne inorganic einc-rich primer for base-material has been the high-performance anticorrosion and antifouling coating testing through practice, has larger development and dives
Power；(2) research and develop organically-modified inorganic anti-corrosion material：In recent years, foreign applications organic emulsion modified concrete is strong to improve it
Degree, resistance to medium, are widely used in the application of industry ground slab, wherein epoxy aqueous emulsion is with fastest developing speed.Over nearly 10 years, having started to should
For in the antiseptic project field of China, but R＆D work not system, do not form series of products.(3) research and development steel construction is with aqueous
Anti-corrosion primer and finish paint：Waterborne anti-corrosive primer must solve " the dodging erosion " of base material and a difficult problem for poor water resistance；And for finish paint, main
If on the premise of ensureing that it has excellent protective value, improve its ornamental and durability；Meanwhile, water paint is to applying
The dependence of work environment is higher, how to ensure that it is aqueous anti-for obtaining coating of good performance under high humidity, low temperature and enclosed environment
The problem that rotten coating future need to solve emphatically.
Therefore, a kind of salt water resistance performance of exploitation is good, adhesive force is strong, resistance to corrosion is strong, and has the anti-corrosion selfreparing of intelligence
Water paint extremely urgent.
Coating can produce stress cracking, mechanical damage in use, when substrate is contacted with air moisture, causes material rotten
Erosion, reduces the service life of coating, or even can cause security incident.Traditional repair crack method mainly has welding, repairs, newly
In-situ solidifying of resin etc..These traditional methods are to repair thermoplastic polymer using intermolecular interaction mostly, repair
Reason of answering a pager's call is non-covalent interaction between interfacial molecular, and it does not have new covalent bond formed, and needs substantial amounts of manual labor
Dynamic.
Microcapsules Embedded Self-healing Composites are proposed in calendar year 2001 first by White, and its repair mechanisms is：First, will
The microcapsules comprising renovation agent and catalyst are dispersed in matrices of composite material, and when coating cracks, top stress concentration is drawn
Send out microcapsules rupture, renovation agent is migrated to rent using capillary siphoning phenomenon, fills crackle and meets with catalyst, core
There is physical change and chemical change, form good bonding, reach the purpose of selfreparing.
The main component of Chinese tallow tree Chinese catalpa oil is oleic acid, linoleic acid, linolenic glyceride, and contains a small amount of 2,4- decatrienoic acid
And palmitic acid, iodine number 169～190, belong to drying oil, oxidizable dry formation is whippy pliable and tough solid in atmosphere for drying oil
The oils of state film.The more high easier oxidation drying film forming of iodine number.
Chinese tallow tree Chinese catalpa oil is the raw material preparing paint, and performance can be compared favourably with tung oil and linseed oil, can replace paulownia on using
Oil, and the Chinese tallow tree Chinese catalpa oil high fast drying of iodine number, wide material sources, price economy, develop more products using Chinese tallow tree Chinese catalpa oil, not only
The use value of Chinese tallow tree Chinese catalpa oil can be improved, and be conducive to promoting innovation and the development of coating industry.The main product of Chinese tallow tree Chinese catalpa oil
Be distributed in China East China, south China and Central China some areas.At present, it is used Chinese tallow tree Chinese catalpa oil to there is no correlation as self repairing agent
Report.
Content of the invention
The technical problem to be solved in the present invention be provide a kind of salt water resistance performance good, adhesive force is strong, anti-flash rusting is respond well,
Resistance to corrosion is strong, can improve service life, preparation process is simple, cheap, environmental protection intelligence is anti-corrosion reviews one's lessons by oneself overcoating
Layer and preparation method thereof.
The present invention solves above-mentioned technical problem by following technical solution：
A kind of intelligent anti-corrosion coatings, the base-material of described coating is aqueous epoxy resins, and doping intelligence is anti-corrosion to be reviewed one's lessons by oneself
Multiple component, its each component and its mass percent are as follows：
The mass percent summation of each component is 100% above；
The preparation method of the anti-corrosion selfreparing component of described intelligence is：By urea, triton X-100 emulsifying agent, resorcinol and chlorine
Change ammonium and be added separately to mixing and stirring in deionized water, after the pH of above-mentioned mixed liquor is adjusted to 2.5～4, add core
Chinese tallow tree Chinese catalpa oil, stirring mixing, speed of agitator is 500～800rpm, and mixing time is 15～30min；Then by gained mixed liquor
It is placed in water-bath, adds the formalin of mass concentration 37%, and be heated to 50～60 DEG C and be incubated, heat and insulating process
Middle continuation stirring, speed of agitator is 200～400rpm, and mixing time is 3～5h；Then use petroleum ether and deionized water anti-respectively
Multiple suction filtration, washing, then 4～8h is dried at a temperature of 50～60 DEG C, obtain the micro- glue of core shell structure Lauxite cladding Chinese tallow tree Chinese catalpa oil
Capsule, the as anti-corrosion selfreparing component of intelligence；In said method, urea: triton X-100 emulsifying agent: resorcinol: ammonium chloride: go from
Sub- water: core Chinese tallow tree Chinese catalpa oil: the ratio of formalin is 6～8g: 1～3g: 0.2～1g: 0.2～1g: 250mL: 10～20g: 8
～12g.
Described core shell structure Lauxite cladding Chinese tallow tree Chinese catalpa oil microcapsule particle diameter is 10～100 μm.
The core quality that described core shell structure Lauxite coats Chinese tallow tree Chinese catalpa oil microcapsule accounts for microcapsules gross mass
40%～80%.
The moisture content of described intelligence anti-corrosion selfreparing component is 50%～70%.
Described aqueous epoxy resins are styrene and acrylic monomer modified epoxy E44.
Described rutile titanium white powder is micro-/ nano grade particles.
In the preparation method of the anti-corrosion selfreparing component of described intelligence, the method for adjustment pH is：With the hydrochloric acid of 1mol/L institute
The pH stating mixed liquor is adjusted to 2.5～4.
A kind of preparation method of the described anti-corrosion coatings of intelligence, comprises the following steps：
(1), anti-corrosion for intelligence selfreparing component is distributed in deionized water by 1: 3 mass ratio；
(2), it is separately added into aqueous epoxy resins, rutile titanium white powder and dispersant in the dispersion liquid of step (1) gained
5040, and stir to mixing；
(3) in the mixed liquor of step (2) gained, it is separately added into thickener SN-636 and levelling agent BYK333, stirring is mixed
Close；
(4) in the mixed liquor of step (3) gained, add curing agent polyamide, stirring mixing；
(5), by the spraying of step (4) gained mixed liquor or brush or be spun on base material, obtain that described intelligence is anti-corrosion to be reviewed one's lessons by oneself
Overcoating layer；
The rotating speed of the stirring mixing of described step (3) and step (4) is 300～500rpm, and mixing time is 10～
30min.
The advantage of the intelligent anti-corrosion coatings of the present invention is：
Using emulsifying agent, Chinese tallow tree Chinese catalpa wick material is emulsified, Lauxite parcel Chinese tallow tree Chinese catalpa oil is prepared using situ aggregation method micro-
Capsule, and this microcapsules is corroded selfreparing component as metal coating, it is doped in aqueous epoxy resins base-material, and spray to
On metallic matrix, when coating suffers brokenly ring, microcapsules core Chinese tallow tree Chinese catalpa oil, by the effect of capillary, it is filled in crack,
And crosslink and film-forming with the oxygen of in the air, so that coating has intelligence corrosion self-repair function, it is greatly improved
The corrosion resistance of coating and service life, overcome the rupture that can not be repaired in time and lead to due to micro-damage.Of the present invention
Coating does not contain the compositions such as heavy metal, and environmental protection, the prices of raw materials are cheap, and preparation process green is simple；Meanwhile, salt water resistance performance
The strong and anti-flash rusting of excellent, adhesive force is respond well.
Specific embodiment
Embodiment 1：
A kind of intelligent anti-corrosion coatings, with aqueous epoxy resins as base-material, add the anti-corrosion self-repairing microcapsule of intelligence
And multiple color stuffing and auxiliary agent, its each component and its mass percent as follows：
| Component | Mass percentage content |
| Aqueous epoxy resins | 35.0% |
| Curing agent polyamide | 20.0% |
| The anti-corrosion selfreparing component of intelligence | 15.0% |
| Rutile titanium white powder | 20.0% |
| Dispersant 5040 | 2.0% |
| Thickener SN-636 | 4.0% |
| Levelling agent BYK333 | 4.0% |
6g urea, 1g triton X-100 emulsifying agent, 0.2g resorcinol and 0.2g ammonium chloride is taken to be added to 250mL deionized water
Middle mixing and stirring, is adjusted to 2.5～4 with 1mol/l hydrochloric acid the pH of mixed liquor, adds 10g core Chinese tallow tree Chinese catalpa oil, stirring
Mixing, speed of agitator is 500rpm, and mixing time is 30min, then gained mixed liquor is placed in water-bath, is slowly added to matter
Formalin 10g of amount concentration 37%, is heated to 50 DEG C and is incubated, be stirred continuously mixing in the process, its speed of agitator is
400rpm, mixing time is 5h, then with petroleum ether and deionized water suction filtration, washing repeatedly, is dried 8 hours, obtains at a temperature of 50 DEG C
Obtain core shell structure Lauxite cladding Chinese tallow tree Chinese catalpa oil microcapsule, the as anti-corrosion selfreparing component of intelligence.
Described core shell structure Lauxite cladding Chinese tallow tree Chinese catalpa oil microcapsule particle diameter is 10～100 μm.
The core quality that described core shell structure Lauxite coats Chinese tallow tree Chinese catalpa oil microcapsule accounts for microcapsules gross mass
40%～80%.
The moisture content of described intelligence anti-corrosion selfreparing component is 50%～70%.
Described aqueous epoxy resins are styrene and acrylic monomer modified epoxy E44.
Described rutile type titanium white is micro-/ nano grade particles.
A kind of preparation method of the described anti-corrosion coatings of intelligence, comprises the following steps：
(1), anti-corrosion for intelligence selfreparing component is distributed in deionized water by 1: 3 mass ratio；
(2), it is separately added into aqueous epoxy resins, rutile titanium white powder and dispersant in the dispersion liquid of step (1) gained
5040, and stir to mixing；
(3) in the mixed liquor of step (2) gained, it is separately added into thickener SN-636, levelling agent BYK333, stirring is mixed
Close；
(4) in the mixed liquor of step (3) gained, add curing agent polyamide, stirring mixing；
(5), by the spraying of step (4) gained mixed liquor or brush or be spun on base material, obtain that described intelligence is anti-corrosion to be reviewed one's lessons by oneself
Overcoating layer；
The rotating speed of the stirring mixing of described step (3) and step (4) is 300～500rpm, and mixing time is 10～
30min.
Embodiment 2：
A kind of intelligent anti-corrosion coatings, with aqueous epoxy resins as base-material, add the anti-corrosion self-repairing microcapsule of intelligence
And multiple color stuffing and auxiliary agent, its each component and its mass percent as follows：
| Component | Mass percentage content |
| Aqueous epoxy resins | 38.0% |
| Curing agent polyamide | 18.0% |
| The anti-corrosion selfreparing component of intelligence | 14.0% |
| Rutile titanium white powder | 20.0% |
| Dispersant 5040 | 2.0% |
| Thickener SN-636 | 4.0% |
| Levelling agent BYK333 | 4.0% |
Weigh 7g urea, 2g triton X-100 emulsifying agent, 0.5g resorcinol and 0.5g ammonium chloride and be added to 250mL deionization
Mixing and stirring in water, is adjusted to 2.5～4 with 1mol/l hydrochloric acid the pH of mixed liquor, adds 15g core Chinese tallow tree Chinese catalpa oil, stirs
Mix mixing, speed of agitator is 600rpm, mixing time is 20min, then gained mixed liquor is placed in water-bath, is slowly added to
Formalin 11g of mass concentration 37%, is heated to 55 DEG C and is incubated, be stirred continuously mixing in the process, its speed of agitator
For 300rpm, mixing time is 4h, then with petroleum ether and deionized water suction filtration, washing repeatedly, is dried 6 hours at a temperature of 55 DEG C,
Obtain core shell structure Lauxite cladding Chinese tallow tree Chinese catalpa oil microcapsule；It is the anti-corrosion selfreparing component of intelligence.
Remaining is with embodiment 1.
Embodiment 3：
A kind of intelligent anti-corrosion coatings, with aqueous epoxy resins as base-material, add the anti-corrosion self-repairing microcapsule of intelligence
And multiple color stuffing and auxiliary agent, its each component and its mass percent as follows：
| Component | Mass percentage content |
| Aqueous epoxy resins | 43.0% |
| Curing agent polyamide | 18.0% |
| The anti-corrosion selfreparing component of intelligence | 13.0% |
| Rutile titanium white powder | 19.0% |
| Dispersant 5040 | 1.0% |
| Thickener SN-636 | 3.0% |
| Levelling agent BYK333 | 3.0% |
Weigh 8g urea, 3g triton X-100 emulsifying agent, 1g resorcinol and 1g ammonium chloride to be added in 250mL deionized water
Mixing and stirring, is adjusted to 4 with 1mol/l hydrochloric acid the pH of mixed liquor, adds 20g core Chinese tallow tree Chinese catalpa oil, stirring mixing, stirs
Mix rotating speed is 500rpm, and mixing time is 15min, then gained mixed liquor is placed in water-bath, is slowly added to mass concentration
37% formalin 12g, is heated to 60 DEG C and is incubated, be stirred continuously mixing in the process, and its speed of agitator is 400rpm,
Mixing time is 3h, then with petroleum ether and deionized water suction filtration, washing repeatedly, is dried 4 hours at a temperature of 60 DEG C, obtains nucleocapsid knot
Structure Lauxite cladding Chinese tallow tree Chinese catalpa oil microcapsule；It is the anti-corrosion selfreparing component of intelligence.
Remaining is with embodiment 1.
Embodiment 4：
A kind of intelligent anti-corrosion coatings, with aqueous epoxy resins as base-material, add the anti-corrosion self-repairing microcapsule of intelligence
And multiple color stuffing and auxiliary agent, its each component and its mass percent as follows：
| Component | Mass percentage content |
| Aqueous epoxy resins | 46.0% |
| Curing agent polyamide | 18.0% |
| The anti-corrosion selfreparing component of intelligence | 12.0% |
| Rutile titanium white powder | 18.0% |
| Dispersant 5040 | 1.0% |
| Thickener SN-636 | 2.0% |
| Levelling agent BYK333 | 3.0% |
Weigh 7.5g urea, 1.5g triton X-100 emulsifying agent, 0.8g resorcinol and 0.9g ammonium chloride to be added to 250mL and go
Mixing and stirring in ionized water, is adjusted to 3.5 with 1mol/l hydrochloric acid the pH of mixed liquor, adds 18g core Chinese tallow tree Chinese catalpa oil, stirs
Mix mixing, speed of agitator is 700rpm, mixing time is 25min, then gained mixed liquor is placed in water-bath, is slowly added to
Formalin 10g of mass concentration 37%, is heated to 60 DEG C and is incubated, be stirred continuously mixing in the process, its speed of agitator
For 400rpm, mixing time is 3.5h, then with petroleum ether and deionized water suction filtration, washing repeatedly, is dried 5 little at a temperature of 60 DEG C
When, obtain core shell structure Lauxite cladding Chinese tallow tree Chinese catalpa oil microcapsule；It is the anti-corrosion selfreparing component of intelligence.
Remaining is with embodiment 1.
Embodiment 5：
A kind of intelligent anti-corrosion coatings, with aqueous epoxy resins as base-material, add the anti-corrosion self-repairing microcapsule of intelligence
And multiple color stuffing and auxiliary agent, its each component and its mass percent as follows：
| Component | Mass percentage content |
| Aqueous epoxy resins | 50.0% |
| Curing agent polyamide | 17.0% |
| The anti-corrosion selfreparing component of intelligence | 10.0% |
| Rutile titanium white powder | 18.0% |
| Dispersant 5040 | 1.0% |
| Thickener SN-636 | 2.0% |
| Levelling agent BYK333 | 2.0% |
Weigh 6.5g urea, 3g triton X-100 emulsifying agent, 1g resorcinol and 0.5g ammonium chloride and be added to 250mL deionization
Mixing and stirring in water, is adjusted to 4 with 1mol/l hydrochloric acid the pH of mixed liquor, adds 14g core Chinese tallow tree Chinese catalpa oil, and stirring is mixed
Close, speed of agitator is 800rpm, mixing time is 18min, then gained mixed liquor is placed in water-bath, is slowly added to quality
Formalin 8g of concentration 37%, is heated to 50 DEG C and is incubated, be stirred continuously mixing in the process, and its speed of agitator is
400rpm, mixing time is 4.5h, then with petroleum ether and deionized water suction filtration, washing repeatedly, is dried 8 hours at a temperature of 60 DEG C,
Obtain core shell structure Lauxite cladding Chinese tallow tree Chinese catalpa oil microcapsule；It is the anti-corrosion selfreparing component of intelligence.
Remaining is with embodiment 1.
5 embodiment main performance index：
| Resistance to salt water/h >= | 460 |
| Resistance to water/d >= | 24 |
| Hardness/H | 2-3 |
| Resistance to sudden strain of a muscle is lost | No |
| Adhesive force/level | 2 |
| Resistance to impact/cm | 50 |
Using in embodiment 1-5 without the anti-corrosion selfreparing component of intelligence coating as comparative example 1-5, by embodiment
1-5 is compared respectively with comparative example 1-5, intersects mark signature with blade respectively and scratches coating, places two days under room temperature；According still further to
The coating sample of comparative example 1-5 and embodiment 1-5 is placed in the examination of YWX/Q-250B type salt fog by ASTM B117-2009 standard respectively
Carry out 1000H neutral salt spray test (NSS), according to GB/T6461-2002 standard, the corrosion journey to the print after test in tryoff
Degree grade is evaluated, and result is as shown in table 1：
After table 1.NSS1000H, sample corrosion class evaluates (RP)
| Sequence number | Embodiment extent of corrosion grade | Comparative example extent of corrosion grade |
| 1 | 9 | 7 |
| 2 | 8 | 5 |
| 3 | 10 | 6 |
| 4 | 9 | 5 |
| 5 | 9 | 7 |
Claims (8)
1., it is characterised in that the base-material of described coating is aqueous epoxy resins, doping is intelligent for a kind of anti-corrosion coatings of intelligence
Anti-corrosion selfreparing component, its each component and its mass percent are as follows：
The mass percent summation of each component is 100% above；
The preparation method of the anti-corrosion selfreparing component of described intelligence is：By urea, triton X-100 emulsifying agent, resorcinol and ammonium chloride
It is added separately to mixing and stirring in deionized water, after the pH of above-mentioned mixed liquor is adjusted to 2.5～4, add core Chinese tallow tree
Chinese catalpa oil, stirring mixing, speed of agitator is 500～800rpm, and mixing time is 15～30min；Then gained mixed liquor is placed in
In water-bath, add the formalin of mass concentration 37%, and be heated to 50～60 DEG C and be incubated, heating and insulating process relay
Continuous stirring, speed of agitator is 200～400rpm, and mixing time is 3～5h；Then repeatedly taken out with petroleum ether and deionized water respectively
Filter, washing, then 4～8h is dried at a temperature of 50～60 DEG C, obtain core shell structure Lauxite cladding Chinese tallow tree Chinese catalpa oil microcapsule, that is,
For the anti-corrosion selfreparing component of intelligence；Above-mentioned urea: triton X-100 emulsifying agent: resorcinol: ammonium chloride: deionized water: core crow
Chinese tallow tree Chinese catalpa oil: the ratio of formalin is 6～8g: 1～3g: 0.2～1g: 0.2～1g: 250mL: 10～20g: 8～12g.
2. a kind of anti-corrosion coatings of intelligence according to claim 1 are it is characterised in that described core shell structure ureaformaldehyde
Resin-coating Chinese tallow tree Chinese catalpa oil microcapsule particle diameter is 10～100 μm.
3. a kind of anti-corrosion coatings of intelligence according to claim 1 are it is characterised in that described core shell structure ureaformaldehyde
The core quality of resin-coating Chinese tallow tree Chinese catalpa oil microcapsule accounts for the 40%～80% of microcapsules gross mass.
4. a kind of anti-corrosion coatings of intelligence according to claim 1 are it is characterised in that described intelligence is anti-corrosion reviews one's lessons by oneself
Multiple component moisture content is 50%～70%.
5. a kind of anti-corrosion coatings of intelligence according to claim 1 are it is characterised in that described aqueous epoxy resins
For styrene and acrylic monomer modified epoxy E44.
6. a kind of intelligent anti-corrosion coatings according to claim 1 are it is characterised in that described rutile titanium white powder is
Micro-/ nano grade particles.
7. a kind of anti-corrosion coatings of intelligence according to claim 1 are it is characterised in that the anti-corrosion selfreparing of described intelligence
In the preparation method of component, the method for adjustment pH is：With the hydrochloric acid of 1mol/L, the pH of described mixed liquor is adjusted to 2.5～4.
8. a kind of preparation method of the anti-corrosion coatings of intelligence according to one of claim 1-7 is it is characterised in that wrap
Include following steps：
(1) anti-corrosion for intelligence selfreparing component is pressed 1:3 mass ratio is distributed in deionized water；
(2) it is separately added into aqueous epoxy resins, rutile titanium white powder and dispersant 5040 in the dispersion liquid of step (1) gained,
And stir to mixing；
(3) it is separately added into thickener SN-636 and levelling agent BYK333, stirring mixing in step (2) gained mixed liquor；
(4) curing agent polyamide, stirring mixing are added in step (3) gained mixed liquor；
(5) by the spraying of step (4) gained mixed liquor or brush or be spun on substrate, obtain that described intelligence is anti-corrosion to review one's lessons by oneself overcoating
Layer；
The rotating speed of the stirring mixing of described step (3) and step (4) is 300～500rpm, and mixing time is 10～
30min.
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| CN107216774A (en) * | 2017-07-19 | 2017-09-29 | 陕西延长石油(集团)有限责任公司研究院 | A kind of magnetic anti-corrosion self-healing coatings and its application in the erosion of oil gas field casing tube anti-corrosive |
| CN107502176A (en) * | 2017-06-05 | 2017-12-22 | 邵敏芝 | A kind of method of oil resistant glue and the hydrophobic high stretching PVC film of its preparation oil resistant of application |
| CN108329794A (en) * | 2018-01-15 | 2018-07-27 | 广东省测试分析研究所（中国广州分析测试中心） | A kind of selfreparing corrosion-inhibiting coating and preparation method thereof based on polysilazane microcapsules |
| CN110305565A (en) * | 2019-08-05 | 2019-10-08 | 大洋电力科技集团有限公司 | A kind of anticorrosive paint and preparation method thereof of defecation just pipeline |
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Application publication date: 20170222 |