CN110484042A - A kind of self-repairing super hydrophobic nano anticorrosive coating and preparation method thereof - Google Patents
A kind of self-repairing super hydrophobic nano anticorrosive coating and preparation method thereof Download PDFInfo
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- CN110484042A CN110484042A CN201910605079.3A CN201910605079A CN110484042A CN 110484042 A CN110484042 A CN 110484042A CN 201910605079 A CN201910605079 A CN 201910605079A CN 110484042 A CN110484042 A CN 110484042A
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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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
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
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- 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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- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- 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
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- 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
Abstract
The invention discloses a kind of self-repairing super hydrophobic nano anticorrosive coatings and preparation method thereof, are prepared for a kind of microcapsules first, then by the microcapsules and organic fluorinated silicone modified acrylic resin, hydrophobic nano SiO2, dimethylbenzene and platinum based catalyst a kind of self-repairing super hydrophobic nano anticorrosive coating is prepared after mixing.The present invention not only realizes that corrosion inhibiter is evenly dispersed in matrix resin using the mixture of methyl-silicone oil and corrosion inhibiter as capsule-core, but also realizes the selfreparing of coating surface, it is possible to prevente effectively from be on active service and transportational process in loss；Simple process of the present invention, energy conservation and environmental protection are suitble to large-scale production, after coating is made in self-repairing super hydrophobic nano anticorrosive coating of the invention, coating mechanical property is good, favorable anti-corrosion effect, the impedance remediation efficiency of coating is up to 98%, and fracture toughness remediation efficiency is up to 99%.
Description
Technical field
The invention belongs to corrosion-inhibiting coating technical fields.In particular it relates to a kind of self-repairing super hydrophobic nano anticorrosive coating and
Preparation method.
Background technique
Metal erosion is always one of the ultimate challenge that the industries such as steel, metallurgy, building, communications and transportation face, according to statistics,
Countries in the world every year because corrosion caused by direct economic loss account for about the 2%~4% of its gross national product.Also there is tables of data
Bright, second hand every revolution on wrist-watch half just has 1 ton of steel to be corroded slagging in the world.The common chromate of tradition is as blunt
Change layer and be used for protecting metallic surface, but due to the hypertoxicity of chromate and carcinogenic feature, chromate is prohibited, therefore is opened
Send out a kind of environmental protection chromate-free coating protection technology it is extremely urgent.
With the development of technology, corrosion-inhibiting coating is considered as the most effective means instead of chromate.China's anti-corrosion applies at present
The market scale of material has occupied second, is only second to building coating, and demand average annual growth rate is more than 20%.However, being on active service, transporting
During defeated, coating inevitably will receive various external condition infringements, thus the phenomenon that generating breakage, cracking.If not yet
There is timely, effective reparation, these defects can make coating significantly reduce the protective action of metallic matrix and the adhesive force of coating.
It is artificially repaired or replaced currently, damaged coating mainly passes through, often technique is cumbersome, involves great expense.
Intellectual material is utilized in recent years, and the ability for making coating have self-healing breakage becomes domestic and international field of corrosion prevention
Research hotspot, have huge application value.Selfreparing corrosion-inhibiting coating, can be voluntarily after by external force destruction or environmental damage
Restore or restore under certain condition its original antisepsis.Microcapsules filled-type coatings are common at present review one's lessons by oneself
Overcoating layer, renovation agent is encapsulated in microcapsules by it, and microcapsules and the catalyst that renovation agent can be made to polymerize are compounded in together
In polymer material, when polymer is cracked inside it by external influence, microcapsules occur under the action of crackle
Rupture, renovation agent is released under siphonage and full of inside crack, then causes with the catalyst reaction in basis material and gather
It closes, to repair to crackle, the performance of coating is made to be restored.However the microcapsules capsule-core ingredient is single, mostly singly
One resin, selfreparing effect is undesirable, and mechanical property is bad, and poor with the binding force of matrix resin.And traditional microcapsules
Lotion is difficult to stablize in preparation method, causes to wrap up inefficient.
Super-hydrophobic technology belongs to nanotechnology and bionics field.Theoretically, it is super-hydrophobic refer to static contact angle be greater than or
Equal to 150 °, state of the roll angle less than 10 °, typical example has lotus leaf surface, shagreen etc..When body surface coating is super
After hydrophobic coating, anti-corrosion and self-cleaning function there has been.Therefore, exploitation has super-hydrophobic and selfreparing double effects anti-corrosions
Coating may insure the long-acting antisepsis of coating, and is being on active service and is not losing in transportational process, have a wide range of applications
Prospect.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the defect of the prior art and deficiencies, provide a kind of preparation of microcapsules
Method, mechanical property bad problem single to solve existing microcapsules capsule-core ingredient, and this method will be used to be prepared
Microcapsules are used to prepare the self-repairing super hydrophobic nano anticorrosive coating of good mechanical properties.
A second object of the present invention is to provide the microcapsules that the above method is prepared.
Third purpose of the present invention is to provide a kind of self-repairing super hydrophobic nano anticorrosive coating.
Fourth object of the present invention is to provide the preparation method of above-mentioned self-repairing super hydrophobic nano anticorrosive coating.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
A kind of microcapsules, the capsule-core of the microcapsules are dimethicone and inhibition agent composition, and the cyst wall is polyureas
Formaldehyde.
Microcapsules and matrix resin of the invention have good associativity, and binding force reaches 6~7MPa, and has higher
Leakproofness.
The present invention is what capsule-core was prepared by cyst wall, methyl-silicone oil and corrosion inhibiter benzotriazole mixture of uramit
Microcapsules Size distribution is concentrated and controllable, thickness stabilization, regular shape.
Preferably, the corrosion inhibiter is benzotriazole.
The preparation method of the above-mentioned microcapsules of the present invention, comprising the following steps:
S1. ureaformaldehyde prepolymer solution is prepared with urea, formaldehyde；
S2. by ureaformaldehyde performed polymer, methyl-silicone oil, corrosion inhibiter (80~100) in mass ratio: (8~10): (4~5) are mixed
Even, emulsification, polycondensation are washed, filtering, after drying to obtain the final product.
Preferably, step S1 is by urea and formalin (0.5~1.5) in mass ratio: after (1.5~2.5) mix,
PH of mixed is adjusted to 8.0~9.0, is placed in 60 DEG C~80 DEG C reaction 0.5h~1.5h, mass fraction, which is added, after cooling is
Up to ureaformaldehyde prepolymer solution after 0.6%~1.3% surface-active dilution agent.
Preferably, the urea and formalin 1:2 in mass ratio mixing.
Preferably, in step S1, the solution for adjusting pH is triethanolamine.
Preferably, in step S1, the surfactant is neopelex.
Preferably, emulsification is 30 DEG C~40 DEG C emulsified 40~50min in step S2.
Preferably, polycondensation is to adjust lotion pH to 2.0~2.5 in step S2, in 70 DEG C~75 DEG C 3~4h of reaction.
Preferably, in step S2, the solution for adjusting pH is sulfuric acid.
Preferably, the solution of the washing is that dimethylbenzene, dehydrated alcohol and water obtain suspension washes clean
Pure microcapsules.
Encapsulation prepared by the present invention is good, and has good associativity with matrix resin, and have higher
Leakproofness, be added to the selfreparing effect that can effectively improve coatings after coating.Therefore, institute is claimed in the present invention
It states microcapsules and is preparing the application in self-repairing super hydrophobic nano anticorrosive coating.
A kind of self-repairing super hydrophobic nano anticorrosive coating, by organic fluorinated silicone modified acrylic resin, hydrophobic nano
SiO2, any of the above-described microcapsules, dimethylbenzene and the platinum based catalyst mix.
Preferably, the organic fluorinated silicone modified acrylic resin, dimethylbenzene, hydrophobic nano SiO2, microcapsules and platinum base
The mass ratio of catalyst is (80~100): (20~30): (0.8~2): (8~20): (1~5).
In the anticorrosive paint, using organic fluorinated silicone modified acrylic resin as matrix, film forming matter, dimethylbenzene is solvent,
Microcapsules are selfreparing component, hydrophobic nano SiO2For compound with matrix resin, dredging for coating surface is further enhanced
Aqueous, assigning has better wearability and weatherability by coating surface, and platinum based catalyst is used for and renovation agent crosslinks admittedly
Change reaction, the self-regeneration of damage location is realized in repair crack face.
The self-repair function of above-mentioned coating is accomplished by the following way: when coating cracks, microcapsules can be with splitting
The generation of line and rupture, and release renovation agent, renovation agent is in conjunction with platinum based catalyst；Microcapsules and organic fluorinated silicone of the invention
It is acrylic resin modified have preferable compatibility, can efficient sealed crackle, to realize self-repair function.
In addition, the preparation method of above-mentioned self-repairing super hydrophobic nano anticorrosive coating is also within protection scope of the present invention,
Preparation method are as follows: by organic fluorinated silicone modified acrylic resin, dimethylbenzene, hydrophobic nano SiO2, microcapsules and platinum base catalysis
Agent (80~100) in mass ratio: it (20~30): (0.8~2): (8~20): after (1~5) mixing, is stirred in 1000~1500rpm
Mix 1~2h, then 30~40min of ultrasound under the conditions of 300~500W to obtain the final product.
It is highly preferred that the organic fluorinated silicone modified acrylic resin, dimethylbenzene, hydrophobic nano SiO2, microcapsules and platinum
The mass ratio of base catalyst is (80~100): (20~30): (1~2): (8~10): (2~4).
Preferably, the hydrophobic nano SiO2Partial size be 20~50nm.
The present invention adds microcapsules and nanoparticle forms super-hydrophobic painting using organic fluorinated silicone modified acrylic resin as matrix
Layer, microcapsules are good with matrix resin compatibility, and leakproofness with higher, can effectively improve selfreparing after being added to coating
The selfreparing effect of coating；Flexibility, hardness and the water resistance of acrylic resin after fluorinated silicone modified become more preferably, fluorinated modified
There is acrylic resin super-hydrophobic effect matrix resin and Nanocomposites are further enhanced the hydrophobic of coating surface
Property, it assigns by the better wearability of coating surface and weatherability.
Preferably, the preparation method of the organic fluorinated silicone modified acrylic resin be first by 200~250g dimethylbenzene and 6~
Reactor is added in 10g emulsifier sodium lauryl sulfate, is heated to 70 DEG C, dissolution is sufficiently stirred；By 200g in another flask
Methyl methacrylate, 100~150g butyl acrylate, the premixing of 70~80g α-methacrylic acid, take out 1/10 acrylic acid
0.5~2h of reactor pre-emulsification is added in ester monomer mixture, and 3~5g potassium peroxydisulfate is added, and stirs 5~10min, to seed cream
After liquid is formed, start that remaining acrylate monomer mixed liquor, 30~50g vinyltriethoxysilane and 25~50g is added dropwise
Trifluoro propyl methyl cyclotrisiloxane, adds 1~2g hydrogen peroxide tert-butyl alcohol and 1~2g rongalite, heat preservation the reaction was continued 1h,
Organic fluorinated silicone modified acrylic resin is obtained after cooling.
A kind of self-repairing super hydrophobic nano anticorrosive coating, coating tool has been prepared by creatively labour in inventor
There are super-hydrophobic and selfreparing double effects, the contact angle of coating surface is greater than 150 °, greatly exceeds common coating, coating table
The ultra-hydrophobicity in face makes hydrone be difficult to enter coat inside, and the antiseptic property of coating is made to be further enhanced.
Compared with prior art, the invention has the following advantages:
Microcapsules of the invention not only realize corrosion inhibiter in matrix using the mixture of methyl-silicone oil and corrosion inhibiter as capsule-core
It is evenly dispersed in resin, and the selfreparing of coating surface is realized, it is possible to prevente effectively from being on active service and the damage in transportational process
It loses；Simple process of the present invention, energy conservation and environmental protection are suitble to large-scale production；By self-repairing super hydrophobic nano anti-corrosive of the invention
After coating is made in coating, coating mechanical property is good, and adhesive force is up to 8Mpa, impact resistance 100cm, flexibility 1mm；Coating antiseptic effect
Fruit is good, and coating salt spray resistance is up to 3000h, and wet-heat resisting is up to 2000h, resistance to 10%H2SO4Up to 960h, resistance to 10%NaOH is reachable
960h, resistance to 3%NaCl are up to 720h, and the gasoline of resistance to 93# is up to 600h, in addition, the impedance remediation efficiency of gained coating is reachable
98%, fracture toughness remediation efficiency is up to 99%.
Specific embodiment
Further illustrate the present invention below in conjunction with specific embodiment, but embodiment the present invention is not done it is any type of
It limits.Unless stated otherwise, the present invention uses reagent, method and apparatus is the art conventional reagents, method and apparatus.
Unless stated otherwise, following embodiment agents useful for same and material are commercially available.
Embodiment 1
(1) preparation of organic fluorinated silicone modified acrylic resin
Reactor is added in 200g dimethylbenzene and 8g emulsifier sodium lauryl sulfate, 70 DEG C is heated to, is sufficiently stirred molten
Solution.200g methyl methacrylate, 150g butyl acrylate, 70g α-methacrylic acid are pre-mixed in another flask, taken
Reactor pre-emulsification 0.5h is added in 1/10 acrylate monomer blend out, and 3g potassium peroxydisulfate is added, and 5min is stirred, wait plant
After sub- lotion is formed, start that remaining acrylate monomer mixed liquor, 50g vinyltriethoxysilane and 25g trifluoro is added dropwise
Hydroxypropyl methyl cyclotrisiloxane, adds the 1g hydrogen peroxide tert-butyl alcohol and 1g rongalite, and heat preservation the reaction was continued 1h is obtained after cooling
Organic fluorinated silicone modified acrylic resin.
(2) preparation of microcapsules
At room temperature, 50g urea and 100g formalin are added in four-hole boiling flask, after stirring and dissolving, with three ethyl alcohol
Amine adjusts pH value of solution=8.0 and obtains the ureaformaldehyde performed polymer of clear viscous in 70 DEG C of reaction 1h, and rapid cooling is simultaneously made in stirring
It is diluted with lower 100g aqueous solution of the addition containing 1g neopelex to get ureaformaldehyde prepolymer solution is arrived；It will
Prepolymer solution 80g is added in four-hole boiling flask, is added with stirring 8g methyl-silicone oil, 4g benzotriazole, 35 DEG C of stirring and emulsifyings
40min obtains oil-in-water (O/W) lotion, slowly adjusts pH=2.0 with sulfuric acid solution, while being to slowly warm up to 70 DEG C of reaction 3h,
Microcapsules will be made after gained suspension dimethylbenzene, dehydrated alcohol and distillation water washing, filtering and drying；What is be prepared is micro-
Capsule grain diameter distribution is concentrated and controllable, thickness stabilization, regular shape；Microcapsules and matrix resin associativity are strong, and binding force reaches
7MPa, and leakproofness with higher,
(3) preparation of self-repairing super hydrophobic coating
By the organic fluorinated silicone modified acrylic resin of 100g, 20g dimethylbenzene, 1g hydrophobic nano SiO2, 10g microcapsules and
4g platinum based catalyst is mixed, and 1h is stirred under 1000rpm, then 500w ultrasonic disperse 30min obtains having selfreparing effect
Super hydrophobic coating.
Embodiment 2
(1) preparation of organic fluorinated silicone modified acrylic resin
Reactor is added in 250g dimethylbenzene and 10g emulsifier sodium lauryl sulfate, 70 DEG C is heated to, is sufficiently stirred molten
Solution；200g methyl methacrylate, 150g butyl acrylate, 70g α-methacrylic acid are pre-mixed in another flask, taken
Reactor pre-emulsification 1h is added in 1/10 acrylate monomer blend out, and 5g potassium peroxydisulfate is added, and 10min is stirred, to seed
After lotion is formed, start that remaining acrylate monomer mixed liquor, 50g vinyltriethoxysilane and 50g trifluoropropyl is added dropwise
Ylmethyl cyclotrisiloxane, adds the 2g hydrogen peroxide tert-butyl alcohol and 2g rongalite, and heat preservation the reaction was continued 1h is had after cooling
The fluorinated silicone modified acrylic resin of machine.
(2) preparation of microcapsules
At room temperature, 70g urea and 140g formalin are added in four-hole boiling flask, after stirring and dissolving, with three ethyl alcohol
Amine adjusts pH value of solution=9.0 and obtains the ureaformaldehyde performed polymer of clear viscous in 70 DEG C of reaction 1h, and rapid cooling is simultaneously made in stirring
It is diluted with lower 150g aqueous solution of the addition containing 2g neopelex to get ureaformaldehyde prepolymer solution is arrived；It will
Prepolymer solution 100g is added in four-hole boiling flask, is added with stirring 10g methyl-silicone oil, 5g benzotriazole, 35 DEG C of stirring and emulsifyings
50min obtains oil-in-water (O/W) lotion, slowly adjusts pH=2.5 with sulfuric acid solution, while being to slowly warm up to 75 DEG C of reaction 4h,
Microcapsules will be made after gained suspension dimethylbenzene, dehydrated alcohol and distillation water washing, filtering and drying；What is be prepared is micro-
Capsule grain diameter distribution is concentrated and controllable, thickness stabilization, regular shape；Microcapsules and matrix resin associativity are strong, and binding force reaches
6MPa, and leakproofness with higher.
(3) preparation of self-repairing super hydrophobic coating
By the organic fluorinated silicone modified acrylic resin of 80g, 20g dimethylbenzene, 2g hydrophobic nano SiO2, 8g microcapsules and 3g
Platinum based catalyst is mixed, and 1h is stirred under 1500rpm, then 300w ultrasonic disperse 40min obtains having the super of selfreparing effect
Hydrophobic coating.
Embodiment 3
(1) preparation of organic fluorinated silicone modified acrylic resin
Reactor is added in 200g dimethylbenzene and 6g emulsifier sodium lauryl sulfate, 70 DEG C is heated to, is sufficiently stirred molten
Solution；200g methyl methacrylate, 100g butyl acrylate, 80g α-methacrylic acid are pre-mixed in another flask, taken
Reactor pre-emulsification 2h is added in 1/10 acrylate monomer blend out, and 4g potassium peroxydisulfate is added, and 10min is stirred, to seed
After lotion is formed, start that remaining acrylate monomer mixed liquor, 30g vinyltriethoxysilane and 30g trifluoropropyl is added dropwise
Ylmethyl cyclotrisiloxane, adds the 1g hydrogen peroxide tert-butyl alcohol and 2g rongalite, and heat preservation the reaction was continued 1h is had after cooling
The fluorinated silicone modified acrylic resin of machine.
(2) preparation of microcapsules
At room temperature, 50g urea and 100g formalin are added in four-hole boiling flask, after stirring and dissolving, with three ethyl alcohol
Amine adjusts pH value of solution=8.5 and obtains the ureaformaldehyde performed polymer of clear viscous in 70 DEG C of reaction 1h, and rapid cooling is simultaneously made in stirring
It is diluted with lower 80g aqueous solution of the addition containing 0.5g neopelex, that is, obtains ureaformaldehyde prepolymer solution；It will
Prepolymer solution 80g is added in four-hole boiling flask, is added with stirring 10g methyl-silicone oil, 4g benzotriazole, 35 DEG C of stirring and emulsifyings
40min obtains oil-in-water (O/W) lotion, slowly adjusts pH=2.5 with sulfuric acid solution, while being to slowly warm up to 73 DEG C of reaction 4h,
Microcapsules will be made after gained suspension dimethylbenzene, dehydrated alcohol and distillation water washing, filtering and drying；What is be prepared is micro-
Capsule grain diameter distribution is concentrated and controllable, thickness stabilization, regular shape；Microcapsules and matrix resin associativity are strong, and binding force reaches
6MPa, and leakproofness with higher.
(3) preparation of self-repairing super hydrophobic coating
By the organic fluorinated silicone modified acrylic resin of 100g, 30g dimethylbenzene, 1.5g hydrophobic nano SiO2, 10g microcapsules
It is mixed with 2g platinum based catalyst, 2h is stirred under 1500rpm, then 400w ultrasonic disperse 30min is obtained with selfreparing effect
Super hydrophobic coating.
Performance test
One, method
The self-repairing super hydrophobic nano anticorrosive coating that Examples 1 to 3 obtains is tested for the property by the following method respectively:
Adhesive force is according to GB/T 1720-1979 standard testing；
Impact resistance is according to GB/T 1732-1993；
Flexibility is according to GB/T 1720-79 standard testing；
Resistance to salt water is according to GB/T 1763-89 standard testing；
Resistance to gasoline is according to GB/T 1734-1993 standard testing；
Salt fog resistance is according to GB/T 1771-91 standard testing；
Acid and alkali-resistance is according to 1763 standard testing of GB/T；
Wet-heat resisting is according to 1740 standard testing of GB/T；
Contact angle test: it is measured with contact angle instrument；
The impedance remediation efficiency of front and back is repaired using electrochemical alternate impedance spectrum technical testing coating；
The fracture toughness remediation efficiency of front and back is repaired using impact pendulnm experimental machine measurement coating.
Two, result
The related performance indicators after coating are made respectively such as in self-repairing super hydrophobic nano anticorrosive coating described in Examples 1 to 3
Shown in the following table 1, table 2 and table 3.
The index of correlation measurement result of 1 self-repairing super hydrophobic nanometer anticorrosive coating of table
The index of correlation measurement result of 2 self-repairing super hydrophobic nanometer anticorrosive coating of table
The self-healing properties test result of 3 coatings of table
| Impedance remediation efficiency (%) | Fracture toughness remediation efficiency (%) | |
| Embodiment 1 | 98 | 99 |
| Embodiment 2 | 95 | 97 |
| Embodiment 3 | 94 | 95 |
From upper table 1~3 as can be seen that after coating is made in self-repairing super hydrophobic nano anticorrosive coating of the invention, coating
Mechanical property is good, and adhesive force is up to 8Mpa, impact resistance 100cm, flexibility 1mm；Coating antiseptic effect is good, and coating salt spray resistance is reachable
3000h, wet-heat resisting is up to 2000h, resistance to 10%H2SO4Up to 960h, for resistance to 10%NaOH up to 960h, resistance to 3%NaCl is reachable
720h, the gasoline of resistance to 93# is up to 600h；In addition, the impedance remediation efficiency of gained coating is up to 98%, fracture toughness remediation efficiency can
Up to 99%.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. a kind of microcapsules, which is characterized in that the capsule-core of the microcapsules is dimethicone and inhibition agent composition, the capsule
Wall is uramit.
2. microcapsules according to claim 1, which is characterized in that the corrosion inhibiter is benzotriazole.
3. the preparation method of microcapsules as claimed in claim 1 or 2, which comprises the following steps:
S1. ureaformaldehyde prepolymer solution is prepared with urea, formaldehyde；
S2. by ureaformaldehyde performed polymer, methyl-silicone oil, corrosion inhibiter (80~100) in mass ratio: (8~10): (4~5) mix, are newborn
Change, polycondensation, washs, filtering, after drying to obtain the final product.
4. preparation method according to claim 3, which is characterized in that step S1 be by urea and formalin in mass ratio
(0.5~1.5): after (1.5~2.5) mixing, adjusting pH of mixed to 8.0~9.0, be placed in 60 DEG C~80 DEG C reaction 0.5h~
1.5h is added after the surface-active dilution agent that mass fraction is 0.6%~1.3% up to ureaformaldehyde prepolymer solution after cooling.
5. preparation method according to claim 3, which is characterized in that emulsification is 30 DEG C~40 DEG C emulsified 40 in step S2
~50min.
6. preparation method according to claim 3, which is characterized in that in step S2 polycondensation be adjust lotion pH to 2.0~
2.5, in 70 DEG C~75 DEG C 3~4h of reaction.
7. microcapsules of any of claims 1 or 2 are preparing the application in self-repairing super hydrophobic nano anticorrosive coating.
8. a kind of self-repairing super hydrophobic nano anticorrosive coating, which is characterized in that by organic fluorinated silicone modified acrylic resin, hydrophobic type
Nano-meter SiO_22, microcapsules, dimethylbenzene and platinum based catalyst as claimed in claim 1 or 2 mix.
9. the preparation method of self-repairing super hydrophobic nano anticorrosive coating described in claim 8, which is characterized in that change organic fluorinated silicone
Property acrylic resin, dimethylbenzene, hydrophobic nano SiO2, microcapsules and platinum based catalyst (80~100) in mass ratio: (20~
30): (0.8~2): (8~20): after (1~5) mixing, stirring 1~2h in 1000~1500rpm, then 300~500W condition
Lower ultrasonic 30~40min to obtain the final product.
10. preparation method according to claim 9, which is characterized in that the organic fluorinated silicone modified acrylic resin, diformazan
Benzene, hydrophobic nano SiO2, microcapsules and platinum based catalyst mass ratio be (80~100): (20~30): (1~2): (8~
10): (2~4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910605079.3A CN110484042B (en) | 2019-07-05 | 2019-07-05 | Self-repairing super-hydrophobic nano anticorrosive coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910605079.3A CN110484042B (en) | 2019-07-05 | 2019-07-05 | Self-repairing super-hydrophobic nano anticorrosive coating and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN110484042A true CN110484042A (en) | 2019-11-22 |
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