CN108003688A - A kind of preparation method of selfreparing anti-corrosion primer - Google Patents
A kind of preparation method of selfreparing anti-corrosion primer Download PDFInfo
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- CN108003688A CN108003688A CN201711424522.4A CN201711424522A CN108003688A CN 108003688 A CN108003688 A CN 108003688A CN 201711424522 A CN201711424522 A CN 201711424522A CN 108003688 A CN108003688 A CN 108003688A
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- microcapsules
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- coating
- priming paint
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
- B01J13/06—Making microcapsules or microballoons by phase separation
- B01J13/14—Polymerisation; cross-linking
-
- 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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
A kind of the present invention is intended to provide preparation method of anti-corrosion primer and/or protective layer with self-repair function; include the microcapsules with self-repair function in the priming paint; the microcapsules are coated on reparation liquid therein and flow out automatically, so as to fulfill the selfreparing of priming paint when facing destruction.Meanwhile the application also provides the primer coating and/or protective layer that the preparation method obtains, and the application of primer coating and/or protective layer.
Description
Technical field
The invention belongs to anticorrosive paint field, specific and more particularly to a kind of priming paint preparation method, and obtained priming paint,
The priming paint being prepared has the characteristics that to be widely popularized due to the excellent of selfreparing and antiseptic property.
Background technology
Most materials, especially metal material are exposed to natural conditions, or in certain severe or non-bad working environments
Under the conditions of, inevitably will with its local environment media contact, and then produce due to chemistry or electrochemical action cause material
Degeneration and/or destruction, this phenomenon is referred in the art as corroding extensively.
The problem that corrosion, has great generality, and the infringement to material is self-evident, and also the mankind are given birth to
Living and social environment generates significant damage.
Prevent from being done extensive research for corrosion, wherein popularized the most with cladding method, such as plating,
Spraying, brushing etc..Wherein popularization it is most wide when number coatings, also commonly referred to as paint coatings method.This method with easy construction,
Wide adaptability, from the constraint of device area, shape, recoating is low with rehabilitation expense and is widely adopted.Furthermore this method also may be used
The antisepsis with other classes is used cooperatively extensively, such as cathode protection method.
But the use of current paint coatings method is challenged, and when residing abominable environment or complex working condition, coating is not
Can produce infringement with can avoiding, the generation of this infringement be probably due to the change of temperature, the erosion of soda acid, excessive pressurization,
Artificial or non-artificial scuffing, and many factors do not mentioned.The coating for working as material, especially metal surface is inevitable
After the defects of surface tear, coating failure occurs in ground, the product or equipment of material, especially metal_based material are then exposed to non-guarantor
So as to face the windburn of corrosion in the environment of shield.
It is coating or recoating currently for the widely used remedial measure of this problem, but it is difficult for tiny scuffing, naked eyes
With what is directly discovered, or coating damage position is hidden or coating coats non-uniform problem and can not make up in time, and then makes
Equipment is exposed under conditions of danger.
The content of the invention
The series application of the application《A kind of selfreparing anti-corrosion primer》Carried out in detail for above-mentioned mentioned technical problem
Thin description.
But series application《A kind of selfreparing anti-corrosion primer》In do not refer to the preparation method of the priming paint in detail, and only relate to
The wherein preparation method of microcapsules, and apply in series《A kind of selfreparing anti-corrosion primer》In mentioned embodiment, inventor
Provide the experimental data of multigroup optimum embodiment, but existing technical staff exists when facing multigroup composition material, exists and does not know
How the doubt of proportioning preparation is carried out, and therefore, the application carries out specifically mainly for the proportioning of optimal embodiment and preparation
It is bright.
First, series application《A kind of selfreparing anti-corrosion primer》Full text quoted herein, with to the application problem
Content and background are illustrated.
A kind of improved base paint formulation, targeted technical problem are that primer coating is facing slight slight crack, or slight stroke
The defects of hindering, or being difficult to repair during shallow-layer chemical depletion.
A kind of improved base paint formulation, contains microcapsules in base paint formulation, and the microcapsules in priming paint can be with slightly splitting
Trace or it is slight scratch or shallow-layer chemical depletion and rupture, the reparation liquid in microcapsules can flow out automatically, realize primer coating
Actively repair.
Above-mentioned microcapsules include at least two kinds of main ingredient, or only include two kinds of compositions, one is covering material, the second is
Repair materials, covering material and the equal preferred resin class material of repair materials.
Selection for covering material, should select adhesivity resin material, first have to ensure when facing extremely slight friction
Do not rupture, to avoid the decline of protective value, should also meet the decomposable asymmetric choice net when facing strong acid or highly basic, inventor is preferably using urea
Urea formaldehyde.
Selection for repair materials, the performance that need to possess is high for cementability, and shrinking percentage is small, and solidification temperature scope is wide (extremely
It is few that there is good curability in room temperature to high temperature), high temperature is narrowly defined as about 150-200 degrees Celsius of scope herein.It is right
In cementability, also referred to as caking property, the universality for multiple material, such as metal and metal should ensure that, metal is mixed with nonmetallic
Solidifying soil and metal, glass and metal, metal and ceramics, plastics and metal, metal and timber, plastics and ceramics, concrete and pottery
Porcelain etc., is respectively provided with good cementability.The resin with such property can be as the material for repairing class, for cost
Epoxy resin is selected during consideration, alicyclic based epoxy resin and/or linear aliphatic epoxy resin specifically can be selected.
Obviously, it when being used cooperatively with repair materials, must also make to contain curing agent in priming paint, the work(repaired just can be achieved
Energy.Curing agent and repair materials, such as when epoxy resin is used cooperatively, epoxide group in epoxy molecule chain by with it is more
The curing agent of type crosslinks reaction and forms the insoluble high polymer with three-dimensional net structure, realizes to metal/non-
Metal, metal/metal, the bonding effect of nonmetallic/metal material, or the repair on surface.The layer formed has good
Good stability, and the problem of being not easily repaired mainly due to defect caused by physical injury is overcome, in addition it can also carry
The high corrosion resistance to alkali.
Curing agent usually adds in coating matrix as raw material, such as imidazoles or derivatives thereof, can be formed after reaction
The net structure that ehter bond combines.
The material identical with repair materials can be selected in primer base, and the material different from repair materials, selection also may be selected
Identical material is the consideration based on stability.
When in view of the problem of pollution, such as sodium acid carbonate class material can be added, when facing alkalescence or sour environment
Play protection.
When facing organic and endangering, hard particles can provide good protective effect, and it is general that inventor improves the prior art
All over the technology using carborundum or terres rares micro mist, realized with the compound prescription of glass flake and titanium dioxide, and both dosages
Parts by weight are with about 1.25-1.5:1 adds when adding with good anti-organic corrosion effect, this part frequently as filler.
In addition, it should also include emulsifying agent, initiator, dispersant, coalescents, coupling agent, defoamer etc. in primer base.
For emulsifying agent, initiator, dispersant, this is not described in detail here for the effect of coalescents, coupling agent, defoamer etc., this area
Technical staff tackles this and has gained some understanding, this is described in detail below by embodiment.
By multigroup experimental data, the scope that the application raw material proportioning is calculated through fitting optimization is as follows：
The application also provides a kind of preparation method with self-repair function anti-corrosion primer, including in primers formed with certainly
The step of microcapsules of repair function.
A kind of preparation method with self-repair function anti-corrosion primer, including at least forming Lauxite coated epoxy resin
The step of microcapsules.
The microcapsules can rupture, repairing in microcapsules with slight slight crack or slight scuffing or shallow-layer chemical depletion
Multiple liquid flows out automatically, realizes the active reparation of primer coating.
A kind of protective layer being prepared by anti-corrosion primer and preparation method thereof, including by foregoing priming paint coated on needing to protect
The product external surfaces of shield.
The specific preparation process of priming paint is as follows：
The modification of aqueous epoxy emulsion is carried out first：
(1) nonionic emulsifier and dodecyl sodium sulfate are added in appropriate amount of deionized water, use magnetic stirring apparatus
Heat and stirred to being completely dissolved slightly, obtain composite emulsifying liquid；
(2) initiator (such as sodium peroxydisulfate) is dissolved in the deionized water of about 10ml, obtains triggering liquid；
(3) by epoxy resin (E-51 or E44), organosilicon and acrylic monomer or derivative (such as butyl acrylate)
It is thoroughly mixed, obtains mix monomer；
(4) the composite emulsifying liquid (such as methyl methacrylate) of 45~65ml is added to equipped with reflux condensing tube, stirred
In the 250ml three-necked flasks for mixing device, room temperature is stirred continuously, and mix monomer is then added dropwise, and after dripping, lasting stirring is about
30min, obtains pre-emulsion, remains spare；
(5) remaining composite emulsifying liquid is added in the 250ml three-necked flasks equipped with reflux condensing tube and blender, then
The initiation liquid for adding 9~13ml pre-emulsions and 5ml carries out prepolymerization, is gradually heating to 75 DEG C, and reaction is found in temperature-rise period
System gradually has blue phase appearance, treats that temperature reaches 75 DEG C, blue phase substantially persistently keeps about 30min afterwards, then interior when 2~3 is small
By remaining pre-emulsion and trigger liquid to be gradually added, trigger liquid to add once every about 10min.80 are gradually warming up to after adding
DEG C, insulation reaction 1.5h, stops reaction, is then cooled to less than 30 DEG C, it is 7~8 that ammonium hydroxide, which adjusts pH, with 100 mesh screens, is gone out
Material.
Further carry out following steps：
(6) added in water by formula and give the dispersant and coalescents of scheduled volume (sodium acid carbonate, ethylene glycol, six inclined phosphorus
Sour sodium, hydroxymethyl cellulose), low speed disperses 10min；
(7) 25~45 parts of organic silicon modified aqueous epoxy emulsion and coupling agent (γ-(methyl-prop prepared are added
Alkene acyl-oxygen) propyl trimethoxy silicane), 300r/min~350r/min disperses about 30min；
(3) filler (glass flake and titanium dioxide), the Lauxite coated epoxy resin system of grinding 2h or so is added
Manufactured microcapsules, imidazoles, the rotating speed of 200r/min disperse about 30min；
(4) defoamer (such as dimethicone) is added, 3~5min of stirring is defoamed, 300r/min~350r/min
Stirring, is sufficiently mixed and coating is uniformly made；
Further, the preparation method of microcapsules made of the Lauxite coated epoxy resin system includes following step
Suddenly：
1) urea and formaldehyde are mixed, adjusts pH value to 8~9,1~1.5h is reacted at 65~75 DEG C, after adding water, formed
Solution A；
The weight ratio of the urea, formaldehyde and deionized water is (0.9~1.1) ︰ (1.8~2.2) ︰ (7~8)；
2) under the conditions of 45~55 DEG C, after epoxy resin (E-51 or E44), emulsifying agent are mixed, it is added to deionized water
In, 20~30min is stirred, and defoamer is added dropwise to the removal of foam, obtain solution B；
The emulsifying agent is neopelex；
The defoamer is n-octyl alcohol；
The weight ratio of the epoxy resin, emulsifying agent and distilled water is (2~3) ︰ (0.2~0.4) ︰ (7~8)；
3) under stirring, solution B is slowly added dropwise into solution A, adjusts pH to 3.2~3.6, treats that microcapsules are molded
Afterwards, cured, product is filtered, is washed, after drying, obtains solid powdery microcapsules；
The stir speed (S.S.) scope is 300~500r/min；
Temperature in the solidification process is 60~65 DEG C, when the time is 2~3 small；
Temperature in the drying process is 35~45 DEG C, when the time is 8~12 small.
Selfreparing anti-corrosion primer is producing it by microcapsules made of the Lauxite coated epoxy resin in formula
Slight slight crack or when scratching defect compared with shallow-layer physics, repairs liquid and is flowed out from impaired microcapsules, with being distributed in coating matrix
Curing agent reacted, realize the active reparation of early defect.
Embodiment
The technical solution of the application is described in detail with reference to embodiment.
The usage ratio of wherein each raw material is on the basis of parts by weight.
By Experimental comparison, the material component scope for being conducive to the application is selected, wherein being filtered out with No. numberings
Qualified products, the said goods can provide good performance in terms of destructive selfreparing, wherein being non-qualified production with S. numberings
Product, or in curability, or in curtain coating property, or it is unsatisfactory in alkaline-resisting/acid process, such as S.02 curing rate is slow, not completely
Form qualified repairing, in another example S.04, showed in terms of curtain coating property it is poor, and in another example S.07 and S.09, respectively acidproof
Perform poor with terms of alkali resistance.And for the product of No. series, performance preferably for No.02, No.04, No.06 and
No.07, can be as the better embodiment of this product, and No.09 performances are optimal, can be as the preferred forms of this product.
Therefore, by multigroup experimental data, the scope that the application raw material proportioning is calculated through fitting optimization is as follows：
Rather than the proportioning of this scope is there are set forth above or do not refer to, it is anticipated that or the defects of do not expect, therefore need not examine
Consider and use.It is the irrationality of raw material proportioning, and the limitation under specified conditions for its caused analysis of causes.
A kind of protective layer being prepared by anti-corrosion primer and preparation method thereof, including by foregoing priming paint coated on needing to protect
The product external surfaces of shield.
The specific preparation process of priming paint is as follows：
The modification of aqueous epoxy emulsion is carried out first：
(1) nonionic emulsifier and dodecyl sodium sulfate are added in appropriate amount of deionized water, use magnetic stirring apparatus
Heat and stirred to being completely dissolved slightly, obtain composite emulsifying liquid；
(2) initiator (such as sodium peroxydisulfate) is dissolved in the deionized water of about 10ml, obtains triggering liquid；
(3) by epoxy resin (E-51 or E44), organosilicon and acrylic monomer or derivative (such as butyl acrylate)
It is thoroughly mixed, obtains mix monomer；
(4) the composite emulsifying liquid (such as methyl methacrylate) of 45~65ml is added to equipped with reflux condensing tube, stirred
In the 250ml three-necked flasks for mixing device, room temperature is stirred continuously, and mix monomer is then added dropwise, and after dripping, lasting stirring is about
30min, obtains pre-emulsion, remains spare；
(5) remaining composite emulsifying liquid is added in the 250ml three-necked flasks equipped with reflux condensing tube and blender, then
The initiation liquid for adding 9~13ml pre-emulsions and 5ml carries out prepolymerization, is gradually heating to 75 DEG C, and reaction is found in temperature-rise period
System gradually has blue phase appearance, treats that temperature reaches 75 DEG C, blue phase substantially persistently keeps about 30min afterwards, then interior when 2~3 is small
By remaining pre-emulsion and trigger liquid to be gradually added, trigger liquid to add once every about 10min.80 are gradually warming up to after adding
DEG C, insulation reaction 1.5h, stops reaction, is then cooled to less than 30 DEG C, it is 7~8 that ammonium hydroxide, which adjusts pH, with 100 mesh screens, is gone out
Material.
Further carry out following steps：
(6) added in water by formula and give the dispersant and coalescents of scheduled volume (sodium acid carbonate, ethylene glycol, six inclined phosphorus
Sour sodium, hydroxymethyl cellulose), low speed disperses 10min；
(7) 25~45 parts of organic silicon modified aqueous epoxy emulsion and coupling agent (γ-(methyl-prop prepared are added
Alkene acyl-oxygen) propyl trimethoxy silicane), 300r/min~350r/min disperses about 30min；
(3) filler (glass flake and titanium dioxide), the Lauxite coated epoxy resin system of grinding 2h or so is added
Manufactured microcapsules, imidazoles, the rotating speed of 200r/min disperse about 30min；
(4) defoamer (such as dimethicone) is added, 3~5min of stirring is defoamed, 300r/min~350r/min
Stirring, is sufficiently mixed and coating is uniformly made；
Further, the preparation method of microcapsules made of the Lauxite coated epoxy resin system includes following step
Suddenly：
1) urea and formaldehyde are mixed, adjusts pH value to 8~9,1~1.5h is reacted at 65~75 DEG C, after adding water, formed
Solution A；
The weight ratio of the urea, formaldehyde and deionized water is (0.9~1.1) ︰ (1.8~2.2) ︰ (7~8)；
2) under the conditions of 45~55 DEG C, after epoxy resin (E-51 or E44), emulsifying agent are mixed, it is added to deionized water
In, 20~30min is stirred, and defoamer is added dropwise to the removal of foam, obtain solution B；
The emulsifying agent is neopelex；
The defoamer is n-octyl alcohol；
The weight ratio of the epoxy resin, emulsifying agent and distilled water is (2~3) ︰ (0.2~0.4) ︰ (7~8)；
3) under stirring, solution B is slowly added dropwise into solution A, adjusts pH to 3.2~3.6, treats that microcapsules are molded
Afterwards, cured, product is filtered, is washed, after drying, obtains solid powdery microcapsules；
The stir speed (S.S.) scope is 300~500r/min；
Temperature in the solidification process is 60~65 DEG C, when the time is 2~3 small；
Temperature in the drying process is 35~45 DEG C, when the time is 8~12 small.
Spin coating, brushing, curtain coating can be used during use, spraying, the Physical such as electrophoretic painting, dip-coating in the product that need to be protected,
As metal surface coats.
And when coating product facing slight slight crack or it is slight scratch or during shallow-layer chemical depletion, repair liquid from impaired
Microcapsules in flow out, the curing agent with being distributed in coating matrix is reacted, and realizes the selfreparing of early defect.The invention
Have the function that to improve and to the extension of burn into equipment life etc. of metal material.And the invention is excuted a law simply, is fitted
Ying Xingqiang, universality is respectively provided with when facing complicated or small or matcoveredn product, and from the influence of the prior art.
Claims (10)
1. a kind of preparation method of selfreparing anti-corrosion primer, including in primers formed with the microcapsules with self-repair function
Step.
2. according to foregoing method, the primer coating is facing slight slight crack, or slight scuffing, or during shallow-layer chemical depletion,
Microcapsules in priming paint can rupture, the reparation liquid in microcapsules with slight slight crack or slight scuffing or shallow-layer chemical depletion
Automatic outflow, realizes the active reparation of primer coating.
3. according to foregoing method, the microcapsules are made of external sheath material and internal layer repair materials.
4. according to foregoing method, the repair materials have the good solidification performance in room temperature to high temperature.
5. according to foregoing method, the step includes the step of forming Lauxite coated epoxy resin microcapsules.
6. the selfreparing anti-corrosion primer formed according to foregoing method.
7. according to the application of foregoing priming paint, spin coating, brushing, curtain coating, spraying, the Physical such as electrophoretic painting, dip-coating are included the use of
In the product that need to be protected, coat metal surface such as, so as to form selfreparing protective layer.
8. a kind of preparation method of selfreparing protective layer, including foregoing priming paint is coated on to the product external surfaces that need to be protected.
9. the application of a kind of foregoing priming paint and/or protective layer, including to metal/metal, metal/non-metal, nonmetallic/metal material
The bonding of material.
10. the application of a kind of foregoing priming paint and/or protective layer, is included in primer coating/and/or protective layer and is facing slight slight crack,
Or it is slight scratch, or during shallow-layer chemical depletion, be coated with the microcapsules that the covering material of repair materials is formed, can be with slightly splitting
Trace or it is slight scratch or shallow-layer chemical depletion and rupture, the reparation liquid in microcapsules flows out automatically, realizes primer coating/and/or protects
The active reparation of sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711424522.4A CN108003688A (en) | 2017-12-25 | 2017-12-25 | A kind of preparation method of selfreparing anti-corrosion primer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711424522.4A CN108003688A (en) | 2017-12-25 | 2017-12-25 | A kind of preparation method of selfreparing anti-corrosion primer |
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| CN108003688A true CN108003688A (en) | 2018-05-08 |
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| CN201711424522.4A Pending CN108003688A (en) | 2017-12-25 | 2017-12-25 | A kind of preparation method of selfreparing anti-corrosion primer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108822691A (en) * | 2018-07-10 | 2018-11-16 | 山东格物新材料科技有限公司 | A kind of selfreparing composite coating that anti-corrosion is strengthened |
| CN109535960A (en) * | 2018-10-16 | 2019-03-29 | 大禹伟业(北京)国际科技有限公司 | Anticorrosive paint, corrosion-inhibiting coating and preparation method thereof |
| CN110452600A (en) * | 2019-07-30 | 2019-11-15 | 博罗县东明化工有限公司 | Selfreparing anticorrosive paint and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108822691A (en) * | 2018-07-10 | 2018-11-16 | 山东格物新材料科技有限公司 | A kind of selfreparing composite coating that anti-corrosion is strengthened |
| CN108822691B (en) * | 2018-07-10 | 2020-10-23 | 山东格物新材料科技有限公司 | Anticorrosion reinforced self-repairing composite coating |
| CN109535960A (en) * | 2018-10-16 | 2019-03-29 | 大禹伟业(北京)国际科技有限公司 | Anticorrosive paint, corrosion-inhibiting coating and preparation method thereof |
| CN110452600A (en) * | 2019-07-30 | 2019-11-15 | 博罗县东明化工有限公司 | Selfreparing anticorrosive paint and preparation method thereof |
| CN110452600B (en) * | 2019-07-30 | 2021-09-14 | 博罗县东明化工有限公司 | Self-repairing heavy-duty anticorrosive coating and preparation method thereof |
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