CN109021647A - Corrosion-inhibiting coating and preparation method thereof - Google Patents
Corrosion-inhibiting coating and preparation method thereof Download PDFInfo
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- CN109021647A CN109021647A CN201810612197.2A CN201810612197A CN109021647A CN 109021647 A CN109021647 A CN 109021647A CN 201810612197 A CN201810612197 A CN 201810612197A CN 109021647 A CN109021647 A CN 109021647A
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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
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
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- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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Abstract
The invention discloses a kind of corrosion-inhibiting coatings and preparation method thereof；The functional stuffing based on graphene oxide is prepared first, then is reacted by organic inorganic hybridization, is prepared function modified system, is finally obtained the product of best performance in the case where limiting material rate using rational formula binding function modified system between organic matter.It is a certain amount of containing fluorophenyl due to being introduced in product structure, obtained product high temperature resistance and adhesive property is excellent, and have preparation process simple, it is low for equipment requirements, it is suitble to industrial amplification production, the preparation of especially creative proposition functional stuffing, in conjunction with the use of different organic components, it is more dispersible in coating, the phenomenon that reducing reunion improves the adhesive force of coating, and obtained coating performance is excellent, anti-corrosion abrasion resistance, waterproofness, flexibility, rheological characteristic are all more excellent than the prior art, and salt water resistance, salt spray resistance, acid resistance are all high.
Description
Technical field
The present invention relates to a kind of organic composite materials and preparation method thereof, and in particular to corrosion-inhibiting coating and preparation method thereof.
Background technique
Corrosion is actually to natural resources greatly broken ring and waste, and corrosion is a spontaneous process, all the time all
Serious loss is brought to the production and living of the mankind, even catastrophic accident.In numerous aseptic technics, coating technology
Most directly and relatively simple one kind, thus in terms of field of civil engineering, decorations, anti-corrosion of metal technology obtains
It is widely applied.The ability that existing corrosion-inhibiting coating copes with extraneous complex environment variation is poor, especially under coupling with frost and salt environment,
Its coating stability after forming a film is by very havoc, it is difficult to play the role of resisting salt jelly erosion damage.It is applied for most of
For layer material, Salt frost resistance, Anti-Chloride Ion Penetration and corrosion resistance are poor, can only play general waterproof and make
With.Often there are biggish gaps for the coating and matrix that general material is prepared into, and do not have good physical shielding and act on, hold
It easily leads to corrosive medium and enters matrix, to cause to corrode brokenly ring.
Summary of the invention
The present invention provides a kind of corrosion-inhibiting coating and preparation method thereof, not only has outstanding waterproof performance, but also have excellent
Good acid-proof, alkali and salt freezes performance, proves that the composite coating has superelevation corrosion resistance through salt mist experiment, and solve existing coating
There is the defects of film forming out-of-flatness, uneven during applied at elevated temperature.
To reach goal of the invention of the present invention, the technical solution adopted is as follows:
A kind of preparation method of corrosion-inhibiting coating, includes the following steps:
(1) under nitrogen protection, six ammonium chloroiridates, nitric hydrate nickel, cobalt nitrate, ethyl alcohol and propionic acid are mixed；It is then refluxed for stirring
110 minutes, ammonium hydroxide, chlorinated paraffin is then added；Back flow reaction 10 minutes；Then it removes solvent and obtains solids；By solids
It ground after heat treatment, wash, be dried to obtain filler；The heat treatment is sintered 10 minutes for 200 DEG C, then calcines 15 in 500 DEG C
Minute, then calcined 3 minutes in 750 DEG C；
Under the conditions of ice-water bath, by filler, graphene oxide, hexamethylene diisocyanate, peroxidized t-butyl perbenzoate, 2- mercapto
After yl pyridines, phosphite ester mixing, mechanical stirring 2 hours, then it is ultrasonically treated 3 hours, obtains functional stuffing；
(2) dimethyldimethoxysil,ne solution, ethyl orthosilicate are added in pentafluorostyrene solution, stirring adds after twenty minutes
Enter chloroplatinic acid, functional stuffing is added after 0.5 hour in stirring, then reacts 1.5 hours in 80 DEG C, adds hexamethyl triethylene
Tetramine, one chlorosilane of trialkyl, the reaction was continued 0.5 hour, obtains function ingredients；
(3) after mixing function ingredients with hexamethyldisilazane, isopropanol, o-phthalic acid diglycidyl ester, 60 DEG C are stirred
It mixes 1 hour；Calgon, diphenyl silanediol, anacardol are added, is stirred 0.5 hour in 90 DEG C, obtains protective system；
(4) protective system is dried 18 minutes in 75 DEG C；Then solidify 3.5~5 minutes in 120 DEG C, obtain corrosion-inhibiting coating.
The volatile solvent of formula of the invention is few, greatly reduces the discharge of VOC, is a kind of good environmental protection coating material,
Film forming matter combines the high adhesion force of o-phthalic acid diglycidyl ester, embodies with diphenyl silanediol, anacardol cooperation
High-intensitive, low-shrinkage and pentafluorostyrene, dimethyldimethoxysil,ne waterproofness, hexamethyl trien,
The advantages of one chlorosilane oil resistant ageing-resistant performance of trialkyl and hexamethyldisilazane, isopropanol, calgon filming performance,
And since 2- mercaptopyridine, ethyl orthosilicate and matrix are well bonded, can also play the role of it is cured, have it is excellent
Good rustless property, especially filler, being used cooperatively for graphene oxide improve coating antiseptic.
In above-mentioned technical proposal, the partial size of filler is 180~260 nanometers；Solvent is removed using ventilation method.Nanoparticle
Skin effect enables nanoparticle to have very high surface, it is easy to and the organic component in coating combines, and makes the cause of coating
Close property is greatly improved, and greatly reduces the hole of coating and defect, and with modified functional stuffing, it is more dispersible in painting
In material, the phenomenon that reducing reunion, the adhesive force of coating, anti-corrosive properties, waterproofness, rheological characteristic, glossiness is all more than the prior art
Add excellent.
In above-mentioned technical proposal, six ammonium chloroiridate, nitric hydrate nickel, cobalt nitrate, ethyl alcohol, propionic acid, ammonium hydroxide, chlorination stone
The mass ratio of wax is 100: 86: 38: 230: 30: 42: 23.Propionic acid, ammonium hydroxide can provide good mixing condition, make so that playing
Metallic element no-float, chlorinated paraffin then make solids heat be uniformly dispersed when sintering, more crucially
Available nanoscale product, and nano grain surface out-of-flatness improve the attachment interface interaction area of organic matter and filler
And interface interaction power.
In above-mentioned technical proposal, the filler, graphene oxide, hexamethylene diisocyanate, perbenzoic acid uncle
Butyl ester, 2- mercaptopyridine, phosphite ester mass ratio be 28: 9: 8: 11: 18: 15.Using hexamethylene diisocyanate, peroxide
Changing the modified nanoparticle of t-butyl perbenzoate, 2- mercaptopyridine, phosphite ester is functional stuffing, and organic matter unit is in nanoparticle
Sublist face reacts to form one layer of organic matter film, can not only react to each other, can also hinder with other organic components of protective system
It only contacts with each other between nanoparticle, so as to improve the interface binding power of nanoparticle, reduces material internal defect.
It joined graphene in coating of the present invention, graphene allows graphene to be filled into coating due to small-size effect
Among cavity and defect, two-dimensional layer structure is layering in coating, forms physical isolation, and the skin effect of graphene can be with
The OH- for generating corrosion rests on coating surface, and not to matrix permeability, especially graphene auxiliary packing is functioned, effectively
The dispersibility and anti-corrosive properties of filler are improved, because the present invention uses graphene oxide, surface group can be with function ingredients
Organic matter chemically react, to improve dispersibility, interfacial effect and avoid particle aggregation.
In above-mentioned technical proposal, the dimethyldimethoxysil,ne, ethyl orthosilicate, pentafluorostyrene, chloroplatinic acid, function
Can filler, hexamethyl trien, one chlorosilane of trialkyl mass ratio be 20: 36: 18: 0.1: 30: 42: 13.This hair
Bright organic compound such as hexamethylene diisocyanate, peroxidized t-butyl perbenzoate, 2- mercaptopyridine, phosphite ester etc.
Not only possess the effect of conventional coupling agents dispersion aggregate, more mainly has reaction efficiency height, dispersion effect good, and can
Stable is present between particle, ensure that filler dispersion and with other components such as hexamethyl trien, adjacent benzene two
Formic acid 2-glycidyl ester, diphenyl silanediol, anacardol etc. occur sound response the advantages of, can also improve coating material by
The Shrinkage Problem caused by surface tension can react final participation film-forming while significantly reducing system viscosity, right
System material properties affect is smaller.
In above-mentioned technical proposal, in the pentafluorostyrene solution, solvent is dimethylbenzene；The dimethylformamide dimethyl oxygroup silicon
In alkane solution, solvent is toluene.The use of filler is a bright spot of the invention, in terms of the application effect that the present invention is implemented, iridium
The anti-corrosive properties that coating material can be enhanced, the intensity of coating can be promoted with graphene cooperation, and nickel cobalt can extend making for coating
Use the service life.
In above-mentioned technical proposal, the function ingredients, hexamethyldisilazane, isopropanol, phthalic acid two shrink sweet
Grease, calgon, diphenyl silanediol, anacardol mass ratio be 20: 6: 38: 11: 3: 22: 6.The invention avoids normal
Resin, such as the use of epoxy resin, amino resins, phenolic resin, acrylic resin are advised, is passed through using multiple groups organic compound
Proportion is limited to be selected with preparation process, and obtained coating has many advantages, such as lower voc content, has no irritating odor, solidifying
After film forming, moreover it is possible to show the advantage that general resin does not have, for example there are the spies such as good gloss, waterproofness and adhesion
Point.
In above-mentioned technical proposal, the mass concentration of the ammonium hydroxide is 22%.
In above-mentioned technical proposal, the corrosion-inhibiting coating with a thickness of 40~55 microns.
The invention also discloses the corrosion-inhibiting coatings prepared according to the preparation method of above-mentioned corrosion-inhibiting coating.
Solidify coating of the present invention contains stable phenyl ring, silicon, phosphorus etc., and paint film is good to substrate adhesive force, and structure stomata is small, knot
Structure is fine and close, has excellent corrosion resistance, shields to matrix.
Existing anticorrosion coating material general thickness is at 200~300 μm, and anticorrosion coating material of the present invention is a kind of ultra-thin materials,
Its thickness range is 40~55 microns；Corrosion-inhibiting coating of the invention can form one layer of fine and close film in substrate surface, can be with
The various solution such as moisture and acid, alkali are prevented to penetrate, to play inhibitor effectiveness, while also at low cost, formula is simple, applies
The advantages that work is convenient, oil resistant is ageing-resistant and rustless property, it is single to overcome the generally existing performance of existing anticorrosion coating material
Problem.
Specific embodiment
Each compound combination of the present invention uses, and product surface drying time does solid work that the time is very short, and adhesive force is high, and water absorption rate is low,
Good luster, flexibility is good, film long service life, can produce extensively and constantly replace current material.Coating is with functional stuffing
Based on organic component, weatherability is preferable, coating in atmosphere oxygen, hydrogen sulfide, sulfur sesquioxide and ammonia it is all more stable,
Also there is good heat resistance simultaneously, functional stuffing reduces the thermal coefficient of coating, improves abrasion resistance and the painting of coating
Film surface self-cleaning, moreover it is possible to which the stability for increasing coating system can improve filler wetability using function component, prevent coating floating
Color and floating have preferable antifoaming ability, levelability when dispersing to coating, can prevent coating from flocculating, and are suitable for various matrix surfaces.
Embodiment one
A kind of preparation method of corrosion-inhibiting coating, includes the following steps:
(1) under nitrogen protection, six ammonium chloroiridate of 100g, 86g nitric hydrate nickel, 38g cobalt nitrate, 230g ethyl alcohol and 30g are mixed
Propionic acid；It is then refluxed for stirring 110 minutes, 42g ammonium hydroxide (22wt%), 23g chlorinated paraffin is then added；Back flow reaction 10 minutes；So
Rear venting removes solvent and obtains solids；It ground after solids is heat-treated, wash, be dried to obtain filler；The heat treatment is
200 DEG C are sintered 10 minutes, then calcine in 500 DEG C 15 minutes, then calcine 3 minutes in 750 DEG C；
Filler, 9g graphene oxide, two isocyanide of 8g1 hexa-methylene under the conditions of ice-water bath, by 28g partial size for 180~260 nanometers
After acid esters, 1g peroxidized t-butyl perbenzoate, 18g 2- mercaptopyridine, the mixing of 15g phosphite ester, mechanical stirring 2 hours, then
Ultrasonic treatment 3 hours, obtains functional stuffing；
(2) 100g pentafluorostyrene solution is added in 50g dimethyldimethoxysil,ne solution (40wt%), 36g ethyl orthosilicate
In (18wt%), 0.1g chloroplatinic acid is added in stirring after twenty minutes, 30g functional stuffing is added after stirring 0.5 hour, then in 80 DEG C
Reaction 1.5 hours, adds 42g hexamethyl trien, one chlorosilane of 13g trialkyl, the reaction was continued 0.5 hour, obtains
To function ingredients；
(3) 40g function ingredients and 12g hexamethyldisilazane, 76g isopropanol, 22g o-phthalic acid diglycidyl ester are mixed
After conjunction, 60 DEG C are stirred 1 hour；6g calgon, 44g diphenyl silanediol, 12g anacardol are added, stirs 0.5 in 90 DEG C
Hour, obtain protective system；
(4) protective system is coated in aluminium sheet, concrete surface respectively, is dried 18 minutes in 75 DEG C；Then solidify respectively at 120 DEG C
3.5 minutes, 5 minutes obtain corrosion-inhibiting coating in aluminium sheet, concrete surface, with a thickness of 40 microns, 55 microns.
In above-mentioned pentafluorostyrene solution, solvent is dimethylbenzene；In dimethyldimethoxysil,ne solution, solvent is first
Benzene；Raw material is all commercially available.
Comparative example one
It (1) is 180~260 nm-class boron nitrides, 9g graphene oxide, 8g1 hexa-methylene two by 28g partial size under the conditions of ice-water bath
After isocyanates, 1g peroxidized t-butyl perbenzoate, 18g 2- mercaptopyridine, the mixing of 15g phosphite ester, mechanical stirring 2 hours,
Then it is ultrasonically treated 3 hours, obtains functional stuffing；
(2) 100g pentafluorostyrene solution is added in 50g dimethyldimethoxysil,ne solution (40wt%), 36g ethyl orthosilicate
In (18wt%), 0.1g chloroplatinic acid is added in stirring after twenty minutes, 30g functional stuffing is added after stirring 0.5 hour, then in 80 DEG C
Reaction 1.5 hours, adds 42g hexamethyl trien, one chlorosilane of 13g trialkyl, the reaction was continued 0.5 hour, obtains
To function ingredients；
(3) 40g function ingredients and 12g hexamethyldisilazane, 76g isopropanol, 22g o-phthalic acid diglycidyl ester are mixed
After conjunction, 60 DEG C are stirred 1 hour；6g calgon, 44g diphenyl silanediol, 12g anacardol are added, stirs 0.5 in 90 DEG C
Hour, obtain protective system；
(4) protective system is coated in aluminium sheet, concrete surface respectively, is dried 18 minutes in 75 DEG C；Then solidify respectively at 120 DEG C
3.5 minutes, 5 minutes obtain corrosion-inhibiting coating in aluminium sheet, concrete surface, with a thickness of 40 microns, 55 microns.
In above-mentioned pentafluorostyrene solution, solvent is dimethylbenzene；In dimethyldimethoxysil,ne solution, solvent is first
Benzene；Raw material is all commercially available.
Comparative example two
A kind of preparation method of corrosion-inhibiting coating, includes the following steps:
(1) under nitrogen protection, six ammonium chloroiridate of 100g, 86g nitric hydrate nickel, 38g cobalt nitrate, 230g ethyl alcohol and 30g are mixed
Propionic acid；It is then refluxed for stirring 110 minutes, 42g ammonium hydroxide (22wt%), 23g chlorinated paraffin is then added；Back flow reaction 10 minutes；So
Rear venting removes solvent and obtains solids；It ground after solids is heat-treated, wash, be dried to obtain filler；The heat treatment is
200 DEG C are sintered 10 minutes, then calcine in 500 DEG C 15 minutes, then calcine 3 minutes in 750 DEG C；
Filler, 8g1 hexamethylene diisocyanate, 1g peroxidating under the conditions of ice-water bath, by 28g partial size for 180~260 nanometers
After t-butyl perbenzoate, 18g 2- mercaptopyridine, the mixing of 15g phosphite ester, mechanical stirring 2 hours, it is small to be then ultrasonically treated 3
When, obtain functional stuffing；
(2) 100g pentafluorostyrene solution is added in 50g dimethyldimethoxysil,ne solution (40wt%), 36g ethyl orthosilicate
In (18wt%), 0.1g chloroplatinic acid is added in stirring after twenty minutes, 30g functional stuffing is added after stirring 0.5 hour, then in 80 DEG C
Reaction 1.5 hours, adds 42g hexamethyl trien, one chlorosilane of 13g trialkyl, the reaction was continued 0.5 hour, obtains
To function ingredients；
(3) 40g function ingredients and 12g hexamethyldisilazane, 76g isopropanol, 22g o-phthalic acid diglycidyl ester are mixed
After conjunction, 60 DEG C are stirred 1 hour；6g calgon, 44g diphenyl silanediol, 12g anacardol are added, stirs 0.5 in 90 DEG C
Hour, obtain protective system；
(4) protective system is coated in aluminium sheet, concrete surface respectively, is dried 18 minutes in 75 DEG C；Then solidify respectively at 120 DEG C
3.5 minutes, 5 minutes obtain corrosion-inhibiting coating in aluminium sheet, concrete surface, with a thickness of 40 microns, 55 microns.
In above-mentioned pentafluorostyrene solution, solvent is dimethylbenzene；In dimethyldimethoxysil,ne solution, solvent is first
Benzene；Raw material is all commercially available.
Comparative example three
A kind of preparation method of corrosion-inhibiting coating, includes the following steps:
(1) under nitrogen protection, six ammonium chloroiridate of 100g, 86g nitric hydrate nickel, 38g cobalt nitrate, 230g ethyl alcohol and 30g are mixed
Propionic acid；It is then refluxed for stirring 110 minutes, 42g ammonium hydroxide (22wt%), 23g chlorinated paraffin is then added；Back flow reaction 10 minutes；So
Rear venting removes solvent and obtains solids；It ground after solids is heat-treated, wash, be dried to obtain filler；The heat treatment is
200 DEG C are sintered 10 minutes, then calcine in 500 DEG C 15 minutes, then calcine 3 minutes in 750 DEG C；
Under the conditions of ice-water bath, by 28g partial size be 180~260 nanometers filler, 9g graphene oxide mix after use
Functional stuffing is obtained after 0.5gKH550 surface treatment；
(2) 100g pentafluorostyrene solution is added in 50g dimethyldimethoxysil,ne solution (40wt%), 36g ethyl orthosilicate
In (18wt%), 0.1g chloroplatinic acid is added in stirring after twenty minutes, 30g functional stuffing is added after stirring 0.5 hour, then in 80 DEG C
Reaction 1.5 hours, adds 42g hexamethyl trien, one chlorosilane of 13g trialkyl, the reaction was continued 0.5 hour, obtains
To function ingredients；
(3) 40g function ingredients and 12g hexamethyldisilazane, 76g isopropanol, 22g o-phthalic acid diglycidyl ester are mixed
After conjunction, 60 DEG C are stirred 1 hour；6g calgon, 44g diphenyl silanediol, 12g anacardol are added, stirs 0.5 in 90 DEG C
Hour, obtain protective system；
(4) protective system is coated in aluminium sheet, concrete surface respectively, is dried 18 minutes in 75 DEG C；Then solidify respectively at 120 DEG C
3.5 minutes, 5 minutes obtain corrosion-inhibiting coating in aluminium sheet, concrete surface, with a thickness of 40 microns, 55 microns.
In above-mentioned pentafluorostyrene solution, solvent is dimethylbenzene；In dimethyldimethoxysil,ne solution, solvent is first
Benzene；Raw material is all commercially available.
Comparative example four
A kind of preparation method of corrosion-inhibiting coating, includes the following steps:
(1) under nitrogen protection, six ammonium chloroiridate of 100g, 86g nitric hydrate nickel, 38g cobalt nitrate, 230g ethyl alcohol and 30g are mixed
Propionic acid；It is then refluxed for stirring 110 minutes, 42g ammonium hydroxide (22wt%), 23g chlorinated paraffin is then added；Back flow reaction 10 minutes；So
Rear venting removes solvent and obtains solids；It ground after solids is heat-treated, wash, be dried to obtain filler；The heat treatment is
200 DEG C are sintered 10 minutes, then calcine in 500 DEG C 15 minutes, then calcine 3 minutes in 750 DEG C；
Filler, 9g graphene oxide, two isocyanide of 8g1 hexa-methylene under the conditions of ice-water bath, by 28g partial size for 180~260 nanometers
After acid esters, 1g peroxidized t-butyl perbenzoate, 18g 2- mercaptopyridine, the mixing of 15g phosphite ester, mechanical stirring 2 hours, then
Ultrasonic treatment 3 hours, obtains functional stuffing；
(2) 50g dimethyldimethoxysil,ne solution (40wt%) is added in 36g ethyl orthosilicate, stirring is added after twenty minutes
0.1g chloroplatinic acid is added 30g functional stuffing after stirring 0.5 hour, then reacts 1.5 hours in 80 DEG C, add 42g hexamethyl
Trien, one chlorosilane of 13g trialkyl, the reaction was continued 0.5 hour, obtains function ingredients；
(3) 40g function ingredients and 12g hexamethyldisilazane, 76g isopropanol, 22g o-phthalic acid diglycidyl ester are mixed
After conjunction, 60 DEG C are stirred 1 hour；6g calgon, 44g diphenyl silanediol, 12g anacardol are added, stirs 0.5 in 90 DEG C
Hour, obtain protective system；
(4) protective system is coated in aluminium sheet, concrete surface respectively, is dried 18 minutes in 75 DEG C；Then solidify respectively at 120 DEG C
3.5 minutes, 5 minutes obtain corrosion-inhibiting coating in aluminium sheet, concrete surface, with a thickness of 40 microns, 55 microns.
In above-mentioned dimethyldimethoxysil,ne solution, solvent is toluene；Raw material is all commercially available.
Comparative example five
A kind of preparation method of corrosion-inhibiting coating, includes the following steps:
(1) under nitrogen protection, six ammonium chloroiridate of 100g, 86g nitric hydrate nickel, 38g cobalt nitrate, 230g ethyl alcohol and 30g are mixed
Propionic acid；It is then refluxed for stirring 110 minutes, 42g ammonium hydroxide (22wt%), 23g chlorinated paraffin is then added；Back flow reaction 10 minutes；So
Rear venting removes solvent and obtains solids；It ground after solids is heat-treated, wash, be dried to obtain filler；The heat treatment is
200 DEG C are sintered 10 minutes, then calcine in 500 DEG C 15 minutes, then calcine 3 minutes in 750 DEG C；
Filler, 9g graphene oxide, two isocyanide of 8g1 hexa-methylene under the conditions of ice-water bath, by 28g partial size for 180~260 nanometers
After acid esters, 1g peroxidized t-butyl perbenzoate, 18g 2- mercaptopyridine, the mixing of 15g phosphite ester, mechanical stirring 2 hours, then
Ultrasonic treatment 3 hours, obtains functional stuffing；
(2) 100g pentafluorostyrene solution is added in 50g dimethyldimethoxysil,ne solution (40wt%), 36g ethyl orthosilicate
In (18wt%), 0.1g chloroplatinic acid is added in stirring after twenty minutes, 30g functional stuffing is added after stirring 0.5 hour, then in 80 DEG C
Reaction 1.5 hours, adds 42g hexamethyl trien, one chlorosilane of 13g trialkyl, the reaction was continued 0.5 hour, obtains
To function ingredients；
(3) 40g function ingredients and 12g hexamethyldisilazane, 76g isopropanol, 22g o-phthalic acid diglycidyl ester are mixed
After conjunction, 60 DEG C are stirred 1 hour；6g calgon is added, is stirred 0.5 hour in 90 DEG C, obtains protective system；
(4) protective system is coated in aluminium sheet, concrete surface respectively, is dried 18 minutes in 75 DEG C；Then solidify respectively at 120 DEG C
3.5 minutes, 5 minutes obtain corrosion-inhibiting coating in aluminium sheet, concrete surface, with a thickness of 40 microns, 55 microns.
In above-mentioned pentafluorostyrene solution, solvent is dimethylbenzene；In dimethyldimethoxysil,ne solution, solvent is first
Benzene；Raw material is all commercially available.
It is tested for the property according to existing method, as a result such as following table.
Neutral salt spray test is carried out according to GB/T 10125-1997, test temperature is constant, is maintained at 35 DEG C or so, pH value
It is 6.5~7.2, period control is 7s, and the concentration of atomisation pressure 0.8kg/cm, NaCl are 5%.Not coated piece of aluminium sheet 150 is small
When after there is spot, do not occur spot behind aluminium sheet 700 hours with one coating of embodiment, it is small in appearance in 810 hours or so
Spot.Through hydrochloric acid corrosion resistant experimental test, the immersion of concrete erosion liquid 22 days with embodiment coating unchanged, after 23 days
Just there is slight peeling, foaming phenomena in the coating, and the concrete with general polymer cementitious coating occurs gently on day 3
Micro- peeling, foaming phenomena, occur as soon as more serious blistering, discolouration phenomena on the 6th day；Concentrated sulfuric acid immersion embodiment coating, 7 days
It is unchanged.
Claims (10)
1. a kind of preparation method of corrosion-inhibiting coating, which comprises the steps of:
(1) under nitrogen protection, six ammonium chloroiridates, nitric hydrate nickel, cobalt nitrate, ethyl alcohol and propionic acid are mixed；It is then refluxed for stirring
110 minutes, ammonium hydroxide, chlorinated paraffin is then added；Back flow reaction 10 minutes；Then it removes solvent and obtains solids；By solids
It ground after heat treatment, wash, be dried to obtain filler；The heat treatment is sintered 10 minutes for 200 DEG C, then calcines 15 in 500 DEG C
Minute, then calcined 3 minutes in 750 DEG C；
Under the conditions of ice-water bath, by filler, graphene oxide, hexamethylene diisocyanate, peroxidized t-butyl perbenzoate, 2- mercapto
After yl pyridines, phosphite ester mixing, mechanical stirring 2 hours, then it is ultrasonically treated 3 hours, obtains functional stuffing；
(2) dimethyldimethoxysil,ne solution, ethyl orthosilicate are added in pentafluorostyrene solution, stirring adds after twenty minutes
Enter chloroplatinic acid, functional stuffing is added after 0.5 hour in stirring, then reacts 1.5 hours in 80 DEG C, adds hexamethyl triethylene
Tetramine, one chlorosilane of trialkyl, the reaction was continued 0.5 hour, obtains function ingredients；
(3) after mixing function ingredients with hexamethyldisilazane, isopropanol, o-phthalic acid diglycidyl ester, 60 DEG C are stirred
It mixes 1 hour；Calgon, diphenyl silanediol, anacardol are added, is stirred 0.5 hour in 90 DEG C, obtains protective system；
(4) protective system is dried 18 minutes in 75 DEG C；Then solidify 3.5~5 minutes in 120 DEG C, obtain corrosion-inhibiting coating.
2. the preparation method of corrosion-inhibiting coating according to claim 1, which is characterized in that the partial size of filler is received for 180~260
Rice；Solvent is removed using ventilation method.
3. the preparation method of corrosion-inhibiting coating according to claim 1, which is characterized in that six ammonium chloroiridate, nitric hydrate
Nickel, cobalt nitrate, ethyl alcohol, propionic acid, ammonium hydroxide, chlorinated paraffin mass ratio be 100: 86: 38: 230: 30: 42: 23.
4. the preparation method of corrosion-inhibiting coating according to claim 1, which is characterized in that the filler, graphene oxide, six Asias
Methyl diisocyanate, peroxidized t-butyl perbenzoate, 2- mercaptopyridine, phosphite ester mass ratio be 28: 9: 8: 11: 18:
15。
5. the preparation method of corrosion-inhibiting coating according to claim 1, which is characterized in that the dimethyldimethoxysil,ne,
The quality of ethyl orthosilicate, pentafluorostyrene, chloroplatinic acid, functional stuffing, hexamethyl trien, one chlorosilane of trialkyl
Than being 20: 36: 18: 0.1: 30: 42: 13.
6. the preparation method of corrosion-inhibiting coating according to claim 1, which is characterized in that molten in the pentafluorostyrene solution
Agent is dimethylbenzene；In the dimethyldimethoxysil,ne solution, solvent is toluene.
7. the preparation method of corrosion-inhibiting coating according to claim 1, which is characterized in that the function ingredients, two silicon of hexamethyl
Azane, isopropanol, o-phthalic acid diglycidyl ester, calgon, diphenyl silanediol, anacardol mass ratio be 20
∶6∶38∶11∶3∶22∶6。
8. the preparation method of corrosion-inhibiting coating according to claim 1, which is characterized in that the mass concentration of the ammonium hydroxide is 22%.
9. the preparation method of corrosion-inhibiting coating according to claim 1, which is characterized in that the corrosion-inhibiting coating with a thickness of 40~
55 microns.
10. the corrosion-inhibiting coating of the preparation method preparation of corrosion-inhibiting coating according to claim 1.
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