CN104449202A - High anti-corrosion coating suitable for high-pressure airless spraying - Google Patents
High anti-corrosion coating suitable for high-pressure airless spraying Download PDFInfo
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- CN104449202A CN104449202A CN201410430295.6A CN201410430295A CN104449202A CN 104449202 A CN104449202 A CN 104449202A CN 201410430295 A CN201410430295 A CN 201410430295A CN 104449202 A CN104449202 A CN 104449202A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- 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
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
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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
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a high anti-corrosion coating suitable for high-pressure airless spraying. The coating comprises a component A and a component B in the weight ratio of 5: 1, and the component A comprises the following components in parts by weight: 18-22 parts of first epoxy resin, 18-24 parts of second epoxy resin, 10-15 parts of magnet powder, 2-10 parts of iron oxide red, 0.2-0.5 part of polyvinyl butyral resin, 0.1-0.2 part of a dispersant, 0.5-0.7 part of modified bentonite, 0.2-0.4 part of nano-silicon dioxide, 0.2-0.3 part of an assistant and 12-15 parts of a diluent; and the component B comprises the following components in parts by weight: 56-62 parts of a first amine curing agent, 12-18 parts of a second amine curing agent and 20-30 parts of ethanol. The high anti-corrosion coating suitable for high-pressure airless spraying adopts two different types of epoxy resin and curing agents to form a film by crosslinking and curing. The film-forming mechanism is that active H<+> is contained in the amine curing agents and can react with epoxy groups in epoxy resin at normal temperature and form a reticular structure by crosslinking; and the reticular structure is dense and hard, good in anti-corrosion performance, strong in adhesion and outstanding in chemical resistance.
Description
Technical field
The present invention relates to coating, high protective system particularly relating to a kind of airless spraying and preparation method thereof.
Background technology
In hot and humid area, when stuff, normal containing carbonic acid gas, sulfurous gas etc. in air, rain and easily cause the corrosion of metalwork.Therefore, metalwork of being everlasting applies epoxy coating, exempt from corrosion to protect metalwork.
Usually; adopt anticorrosion epoxy iron red shop primer to protect metalwork, this epoxy iron red shop primer comprises modified fat amine epoxy curing agent, modified epoxy, epoxy resin, coatings additive(s), iron oxide red anti-corrosion paint, heavy antisepsis pigment and filler, adhesion promoter, epoxide diluent.
Above-mentioned anticorrosion epoxy iron red shop primer, easily precipitate in production, storage process, lump, thixotropy is bad, can not meet the demand of client.
Summary of the invention
Based on this, be necessary to provide a kind of not easily precipitate and lump, the high protective system being applicable to airless spraying that thixotropy is good and preparation method thereof.
Be applicable to a high protective system for airless spraying, comprise component A and B component that weight ratio is 5:1, by weight, component A comprises following component:
First ring epoxy resins 18-22 part, second epoxy resin 18-24 part, magnetic iron powder 10-15 part, red iron oxide 2-10 part, polyvinyl butyral resin 0.2-0.5 part, dispersion agent 0.1-0.2 part, modified alta-mud 0.5-0.7 part, nano silicon 0.2-0.4 part, auxiliary agent 0.2-0.3 part and thinner 12-15 part;
B component comprises following component:
First amine curing agent 56-62 part, second amine curing agent 12-18 part and ethanol 20-30 part;
The molecular weight of described first ring epoxy resins is 470g/mol-480g/mol, and the molecular weight of described second epoxy resin is 900g/mol-910g/mol;
The active hydrogen equivalent weight of described first amine curing agent is 29, and the active hydrogen equivalent weight of described second amine curing agent is 280.。
Wherein in an embodiment, described component A also comprises the 3rd epoxy resin of 0.5-1 weight part, and the molecular weight of described 3rd epoxy resin is 1400-1410g/mol.
Wherein in an embodiment, described component A also comprises the zinc phosphate of 3-6 weight part and the zinc powder of 1-6 weight part.
Wherein in an embodiment, described component A comprises:
First ring epoxy resins 20 parts, the second epoxy resin 20 parts, the 3rd epoxy resin 0.7 part, magnetic iron powder 12.5 parts, red iron oxide 6 parts, zinc phosphate 4.5 parts, zinc powder 3.5 parts, dispersion agent 0.15 part, modified alta-mud 0.6 part, nano silicon 0.3 part, polyvinyl butyral resin 0.3 part, auxiliary agent 0.15 part and thinner 15 parts;
B component comprises:
First amine curing agent 60 parts, the second amine curing agent 15 parts and ethanol 25 parts.
Described in an embodiment, auxiliary agent is selected from least one in polyvinyl butyral acetal, terpolycyantoamino-formaldehyde resin and organic-silicon-modified resin wherein.
Wherein in an embodiment, described first amine curing agent is hexanediamine, and described second amine curing agent is polymeric amide.
The above-mentioned preparation method being applicable to the high protective system of airless spraying, comprises the following steps:
By weight, by 18-22 part first ring epoxy resins, add 10-15 part magnetic iron powder, 5-8 part red iron oxide and 0.1-0.2 part dispersion agent, be stirred to fineness and reach 35 microns, discharging, obtain mixture;
Take dimethylbenzene, and add in described mixture, under constantly stirring, add 0.5-0.7 part modified alta-mud, stir, add ethanol, stir into starchiness, obtain paste thing;
0.2-0.3 part auxiliary agent, 0.2-0.4 part nano silicon, 18-24 part second epoxy resin and 12-15 part thinner is added in described paste thing, under constantly stirring, add the polyvinyl butyral resin of 0.2-0.5 part, stir, when to reach rotary viscosity be 4000 centipoise to powder degree, discharging, obtains component A;
Take 56-62 part first amine curing agent, under agitation, add 20-30 part ethanol and 12-18 part second amine curing agent, stir, obtain B component;
Be 5:1 mixing by described component A and described B component according to weight ratio, obtain the high protective system being applicable to airless spraying.Wherein in an embodiment, obtain in the step of mixture described, also in oriented described mixing vessels, add the step of the 3rd epoxy resin of 0.5-1 weight part.
Wherein in an embodiment, obtain in the step of component A described, in the step obtaining described mixture, add the step of 3-6 parts by weight of phosphoric acid zinc and 1-6 weight part zinc powder in addition.
The object of the invention is to realize in the following manner:
One, coating industry is for the index such as sticking power of film, and the filmogen resin that places one's entire reliance upon decides.Consider fewer for pigment, mainly pigment is considered, select color, anticorrosion, workability etc.The present invention adopts magnetic iron powder as pigment, and it has extremely strong adsorptive power to iron and steel, thus improves the sticking power of film.On the other hand, by adopting the epoxy resin of different molecular weight reasonably combined, the drawback selecting single resin is overcome.By selecting magnetic iron powder as the epoxy resin of pigment and different molecular weight, make the high protective system sticking power being applicable to airless spraying that obtains good, the mechanical performance index such as snappiness, shock strength is greatly improved.
Two, antiseptic property problem
For epoxy resin, owing to adopting the first ring epoxy resins of different molecular weight and the first amine curing agent of the second epoxy resin and different amine value and the second amine curing agent, by H active in amine molecule
+, at normal temperatures with the epoxy reaction in epoxy resin, and crosslinked become reticulated structure, film is fine and close and hard, and chemical property is excellent.Meanwhile, adopt the ferric oxide that existing physical property is antirust, have again the zinc phosphate of chemical rust in pigment, be also added with the pigment zinc powder with electrochemistry provide protection simultaneously, when forming electrode, film forms anode, and metal becomes negative electrode and protected.By candidate rationality rust-stabilising pigment, adopt chemical rust pigment, choose the three measures such as the zinc powder with chemical property simultaneously, three's advantage can be given full play to, the antiseptic property of film is greatly improved.As film resistance to salt water compares with similar coating, extended to more than 30 days by 7 days.
In addition, the present invention is also studied other functions of the high protective system being applicable to airless spraying, specific as follows:
1, can welding technique
The high protective system being applicable to airless spraying of the present invention, no longer through welding this road technique after using.At special occasions, also use as shop primer, so just require that this priming paint possesses this function.Therefore, in the high anticorrosion paint formulation being applicable to airless spraying, add the special filmogen polyvinyl butyral acetal that welding property can be made to strengthen.In pigment, zinc powder also has this function.This welding property excellence being applicable to the high protective system of airless spraying, burn width is little, and when welding, burn radius is less than or equal to 20 millimeters.
2, high solid technology
Coating flies the thickness that solid part height directly has influence on one-pass film-forming, and has direct impact to environment.The present invention adopts high solid technology in selection, which reduces the discharge of organic solvent, strictly control the discharge of WOC, environmentally friendly, wherein WOC represents organic solvent in environment protection emission (not Oil solvent), environmental protection tests index.
3, rheology control technology
The high protective system being applicable to airless spraying of the present invention does not precipitate, thixotropic property is good, is applicable to airless spraying, and one-pass film-forming thickness can reach 100 microns to hundreds of micron.This is that the high protective system thixotropic property being applicable to airless spraying so of the present invention is good owing to adding the good wilkinite of thixotropic property and nanometer grade silica in the high protective system component being applicable to airless spraying, coating not sagging after construction.
The preparation method being applicable to the high protective system of airless spraying of the present invention makes based on following technical study:
1, nano silicon
As everyone knows, silicon-dioxide owing to being with neutrality, structure and stable performance, but after reach nano level, surface-area is very large, as a kind of thixotropic agent in coating, is kind of a toughener for film.After adding suitable nano silicon, the thixotropic property of coating embodies immediately, because price is high, the nano silicon in the present invention and the low modified alta-mud of price with the use of.When this coating is static, viscosity is very large, and coating does not precipitate in storage process, in high degree of agitation situation, thinning immediately, like this to coating after construction not sagging have great improvement.
For adding technique, we carry out further investigated and research and practice, and in order to make its function give full play of, feed postition must disperse successively, not so can lump, and occur flocculation simultaneously, separate, lose effect from coating.Dispersion steps is: after nano silicon is taken formula ratio, thinner and a small amount of epoxy resin is added in mixer, under agitation, slowly add nano silicon, high-speed stirring ten minutes again, makes its evenly saturating heart, without particle agglutination, add again in mixing vessels, stir together with other material.
2, modified alta-mud
Modified alta-mud feed postition and order, very large to the quality influence of the high protective system being applicable to airless spraying, the present invention conducts in-depth research and practice for technique; Step is: in agitation vat, add dimethylbenzene, under stirring state, slowly adds modified alta-mud, and stir about 5 minutes, adds ethanol, become starchiness immediately.Disperse together with other material again.Dimethylbenzene and ethanol order misplace, and just occur micelle shape, difficulties in dispersion.Enter ball mill as being unworthy of pulp, denseness is very large, affects ball mill rate of dispersion, also affects very large simultaneously on coating stability in storage.
3, polyvinyl butyral acetal
In the high protective system being applicable to airless spraying, add thinner, under agitation, slowly add polyvinyl butyral acetal stir about and within 10 minutes, become pulpous state and enter mixing vessels again.
The above-mentioned high protective system being applicable to airless spraying, have employed two kinds of different epoxy resin and solidifying agent, crosslinking curing film forming.Its membrane formation mechanism is the H containing ripple of living in amine curing agent
+, can at normal temperatures with the epoxy reaction in epoxy resin, and be cross-linked into reticulated structure, this reticulated structure is fine and close and hard, and strong adhesion, chemical resistance is given prominence to.
The above-mentioned high protective system being applicable to airless spraying, adopt first ring epoxy resins and second epoxy resin of different molecular weight, overcome the drawback adopting single epoxy resin to bring, the film forming of first ring epoxy resins must adopt solidifying agent ability dry, good, the chemical resistance of film solvent resistance and anti-salt good after dry, hardness is high.Second epoxy resin film good springiness, good mechanical property, snappiness are good, shock resistance.
Adopt magnetic iron powder as pigment, its chemistry Fe by name
3o
4, this pigment is good to the adsorptive power of iron and steel, adds ferric oxide, can adjust the color of magnetic iron powder, improves the ventilation property of film simultaneously.Add modified alta-mud, the thixotropy into coating can be improved, avoid coating in production, storage process, occur the phenomenon of easily precipitation and caking.Add nano silicon and can improve the sag prevention of coating in construction process.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail below to the specific embodiment of the present invention.Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar improvement when intension of the present invention, therefore the present invention is by the restriction of following public concrete enforcement.
The high protective system being applicable to airless spraying of one embodiment, comprise component A and B component that weight ratio is 5:1, by weight, component A comprises following component:
First ring epoxy resins 18-22 part, second epoxy resin 18-24 part, magnetic iron powder 10-15 part, red iron oxide 5-8 part, 0.2-0.5 polyvinyl butyral resin, dispersion agent 0.1-0.2 part, modified alta-mud 0.5-0.7 part, nano silicon 0.2-0.4 part, auxiliary agent 0.2-0.3 part and thinner 1-3 part;
Wherein, first ring epoxy resins is different from the molecular weight of the second epoxy resin, adopts the epoxy resin of mixing, can overcome the defect adopting single resin, improves the sticking power being applicable to the high protective system of airless spraying.In the present invention, first ring epoxy resins is shrink ether type epoxy resins (E44 resin), and the second epoxy resin is bisphenol A epoxide resin (E20).The molecular weight of first ring epoxy resins is 470g/mol-480g/mol, and the molecular weight of described second epoxy resin is 900g/mol-910g/mol.
Magnetic iron powder and Fe
3o
4, it is as pigment in the high protective system being applicable to airless spraying, and the adsorptive power of this pigment to iron and steel is better, because the color of magnetic iron powder is comparatively dark, approximate black, adds a certain amount of red iron oxide, while improving color, also improve the ventilation property of coating.
Add the welding property that polyvinyl butyral resin can strengthen the high protective system being applicable to airless spraying, make it be used as shop primer.
Dispersion agent, auxiliary agent and thinner are dispersion agent, auxiliary agent and thinner conventional in the coating of this area.
In the present embodiment, component A also comprises the 3rd epoxy resin of 32-40 weight part.Namely in the high protective system being applicable to airless spraying, add the 3rd epoxy resin with first ring epoxy resins and the second epoxy resin different molecular weight, the film forming properties of the high protective system being applicable to airless spraying can be improved.In the present embodiment, the 3rd epoxy resin to be massfraction be 60% 601 resin liquid.
In addition, component A also comprises the zinc phosphate of 3-6 weight part and the zinc powder of 3-4 weight part.Zinc phosphate and zinc powder can improve the antiseptic property of film.Modified alta-mud can improve the thixotropy of film, solves the sedimentation problem of film.Nano silicon improves the sag prevention of film.
B component comprises following component:
First amine curing agent 56-62 part, second amine curing agent 12-18 part and ethanol 20-30 part.Wherein, the active hydrogen equivalent weight of the first amine curing agent is 29, and the active hydrogen equivalent weight of the second amine curing agent is 280.。In the present embodiment, the first amine curing agent is hexanediamine, and the second amine curing agent is polymeric amide.
The above-mentioned preparation method being applicable to the high protective system of airless spraying, comprises the following steps:
By weight, by 18-22 part first ring epoxy resins, add 10-15 part magnetic iron powder, 5-8 part red iron oxide and 0.1-0.2 part dispersion agent, be stirred to fineness and reach 35 microns, discharging, obtain mixture;
Take dimethylbenzene, and add in described mixture, under constantly stirring, add 0.5-0.7 part modified alta-mud, stir, add ethanol, stir into starchiness, obtain paste thing;
0.2-0.3 part auxiliary agent, 0.2-0.4 part nano silicon, 18-24 part second epoxy resin and 1-3 part thinner is added in described paste thing, under constantly stirring, add the polyvinyl butyral resin of 0.2-0.5 part, stir, when to reach rotary viscosity be 4000 centipoise to powder degree, discharging, obtains component A;
Take 56-62 part first amine curing agent, under agitation, add 20-30 part ethanol and 12-18 part second amine curing agent, stir, obtain B component;
Be 5:1 mixing by described component A and described B component according to weight ratio, obtain the high protective system being applicable to airless spraying.
With specific embodiment, the present invention is further elaborated below.
Embodiment 1
Be applicable to a high protective system for airless spraying, comprise component A and B component that weight ratio is 5:1, by weight, component A comprises:
E44 resin (first ring epoxy resins) 18 parts, massfraction be 60% E20 resin (the second epoxy resin) 18 parts, magnetic iron powder 10 parts, red iron oxide 2 parts, polyvinyl butyral resin 0.2 part, dispersion agent 0.1 part, R972 (nano silicon) 0.5 part, 881-B (modified alta-mud) 0.5 part, auxiliary agent 0.2 part and thinner 12 parts;
B component comprises:
Hexanediamine (the first amine curing agent) 56 parts, 651 polymeric amide (the second amine curing agent) 12 parts, ethanol 20 parts.
The above-mentioned preparation method being applicable to the high protective system of airless spraying, comprises the following steps:
By weight, by E44 resin, add magnetic iron powder, red iron oxide and dispersion agent, be stirred to fineness and reach 35 microns, discharging, obtain mixture;
Take dimethylbenzene, and add in described mixture, under constantly stirring, add modified alta-mud, stir, add ethanol, stir into starchiness, obtain paste thing;
In described paste thing, add auxiliary agent, nano silicon, the second epoxy resin and thinner, under constantly stirring, add polyvinyl butyral resin, stir, when to reach rotary viscosity be 4000 centipoise to powder degree, discharging, obtains component A;
Take the first amine curing agent, under agitation, add ethanol and the second amine curing agent, stir, obtain B component;
Be 5:1 mixing by described component A and described B component according to weight ratio, obtain the high protective system being applicable to airless spraying.
Embodiment 2
Be applicable to a high protective system for airless spraying, comprise component A and B component that weight ratio is 5:1, by weight, component A comprises:
E44 resin (first ring epoxy resins) 22 parts, massfraction be 60% E20 resin (the second epoxy resin) 24 parts, magnetic iron powder 15 parts, red iron oxide 10 parts, polyvinyl butyral resin 0.5 part, dispersion agent 0.2 part, R972 (nano silicon) 0.4 part, 881-B (modified alta-mud) 0.7 part, auxiliary agent 0.3 part and thinner 15 parts;
B component comprises:
Hexanediamine (the first amine curing agent) 62 parts, 651 polymeric amide (the second amine curing agent) 18 parts, ethanol 30 parts.
The above-mentioned preparation method being applicable to the high protective system of airless spraying is with embodiment 1.
Embodiment 3
Be applicable to a high protective system for airless spraying, comprise component A and B component that weight ratio is 5:1, by weight, component A comprises:
E44 resin (first ring epoxy resins) 20 parts, the E20 resin liquid (the second epoxy resin) 20 parts of 60%, E12 resin 0.7 part (the 3rd epoxy resin), magnetic iron powder 12.5 parts, red iron oxide 6 parts, zinc phosphate 4.5 parts, zinc powder 3.5 parts, dispersion agent 0.15 part, R972 (nano silicon) 0.3 part, 881-B (modified alta-mud) 0.6 part, auxiliary agent 0.15 part, thinner 12 parts, polyvinyl butyral resin 0.3 part, 582-2 resin 36 parts, E12 resin (the 3rd epoxy resin) 0.7 part, ES-06 resin 1 part, 582-2 resin 1 part, organic-silicon-modified resin 0.1 part,
B component comprises:
Hexanediamine (the first amine curing agent) 60 parts, 651 polymeric amide (the second amine curing agent) 15 parts, ethanol 25 parts.
The above-mentioned preparation method being applicable to the high protective system of airless spraying, comprises the following steps:
In zinc phosphate, zinc powder, magnetic iron powder, magnetic iron powder, add E44 resin, add dispersion agent, stir, obtain mixture, adopt toothed gear pump to add in ball mill by said mixture;
Take dimethylbenzene, under constantly stirring, add 881-B, stir, add ethanol, obtain paste thing, add in ball mill, ball milling by described paste thing, grinding mark to fineness reaches 35 microns, discharging, adds in mixing vessels;
Thinner, E12 resin is added in described mixing vessels; Adopt thinner to dilute polyvinyl butyral, and add in described mixing vessels after stirring;
The E20 resin liquid of 60% is adopted thinner dilution, after stirring, add described mixing vessels;
In described mixing vessels, add ES-06 resin and 582-2 resin, dispersed with stirring is even, and when powder degree reaches that rotary viscosity is 4000 centipoises, fineness reaches 35 microns, discharging, filters and packages and obtain component A;
Take 56 parts of hexanediamines, under agitation, add 20 ethanol and 12 part of 651 polymeric amide, stir, obtain B component;
Be 5:1 mixing by described component A and described B component according to weight ratio, obtain the high protective system being applicable to airless spraying.
Detect the high protective system being applicable to airless spraying of embodiment 3, detected result is as follows:
1, viscosity (3# rotor, 6rpm, 25 DEG C), cp >=4000;
2, time of drying (25 ± 1 DEG C), surface drying time≤6 hour, do solid work≤18 hours;
3, sticking power (method of drawing a circle) grade: one-level;
4, fineness (Hegman fineness grind agent)≤40 microns;
5, shock strength: 50 kilograms per centimeter;
6, solids content: be not less than 70%.
7, resistance to salt water: 3%NaCl, 25 DEG C, 30 days, non-foaming, non-corrosive, does not come off.
The priming paint of the high protective system and comparative example that are applicable to airless spraying of embodiment 3 is carried out performance comparison, wherein, the priming paint of comparative example comprises modified fat amine epoxy curing agent, modified epoxy, epoxy resin, coatings additive(s), iron oxide red anti-corrosion paint, heavy antisepsis pigment and filler, adhesion promoter, epoxide diluent, and comparing result is as shown in table 1:
Table 1 embodiment 3 be applicable to the high protective system of airless spraying and the primer performance contrast table of documents
As can be seen from Table 1, the high protective system sticking power being applicable to airless spraying of embodiment 3 is good, and solids content is high, environmentally friendly, and resistance to salt water can reach 31 days.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. be applicable to a high protective system for airless spraying, it is characterized in that, comprise component A and B component that weight ratio is 5:1, by weight, component A comprises following component:
First ring epoxy resins 18-22 part, second epoxy resin 18-24 part, magnetic iron powder 10-15 part, red iron oxide 2-10 part, polyvinyl butyral resin 0.2-0.5 part, dispersion agent 0.1-0.2 part, modified alta-mud 0.5-0.7 part, nano silicon 0.2-0.4 part, auxiliary agent 0.2-0.3 part and thinner 12-15 part;
B component comprises following component:
First amine curing agent 56-62 part, second amine curing agent 12-18 part and ethanol 20-30 part;
The molecular weight of described first ring epoxy resins is 470g/mol-480g/mol, and the molecular weight of described second epoxy resin is 900 g/mol-910 g/mol;
The active hydrogen equivalent weight of described first amine curing agent is 29, and the active hydrogen equivalent weight of described second amine curing agent is 280.
2. the high protective system being applicable to airless spraying according to claim 1, is characterized in that, described component A also comprises the 3rd epoxy resin of 0.5-1 weight part, and the molecular weight of described 3rd epoxy resin is 1400-1410 g/mol.
3. the high protective system being applicable to airless spraying according to claim 1, is characterized in that, described component A also comprises the zinc phosphate of 3-6 weight part and the zinc powder of 1-6 weight part.
4. the high protective system being applicable to airless spraying according to any one of claim 1-3, it is characterized in that, described component A comprises:
First ring epoxy resins 20 parts, the second epoxy resin 20 parts, the 3rd epoxy resin 0.7 part, magnetic iron powder 12.5 parts, red iron oxide 6 parts, zinc phosphate 4.5 parts, zinc powder 3.5 parts, dispersion agent 0.15 part, modified alta-mud 0.6 part, nano silicon 0.3 part, polyvinyl butyral resin 0.3 part, auxiliary agent 0.15 part and thinner 15 parts;
B component comprises:
First amine curing agent 60 parts, the second amine curing agent 15 parts and ethanol 25 parts.
5. the high protective system being applicable to airless spraying according to claim 1, is characterized in that, described auxiliary agent is selected from least one in polyvinyl butyral acetal, terpolycyantoamino-formaldehyde resin and organic-silicon-modified resin.
6. the high protective system being applicable to airless spraying according to claim 1, is characterized in that, described first amine curing agent is hexanediamine, and described second amine curing agent is polymeric amide.
7. be applicable to a preparation method for the high protective system of airless spraying, it is characterized in that, comprise the following steps:
By weight, by 18-22 part first ring epoxy resins, add 10-15 part magnetic iron powder, 5-8 part red iron oxide and 0.1-0.2 part dispersion agent, be stirred to fineness and reach 35 microns, discharging, obtain mixture;
Take dimethylbenzene, and add in described mixture, under constantly stirring, add 0.5-0.7 part modified alta-mud, stir, add ethanol, stir into starchiness, obtain paste thing;
0.2-0.3 part auxiliary agent, 0.2-0.4 part nano silicon, 18-24 part second epoxy resin and 12-15 part thinner is added in described paste thing, under constantly stirring, add the polyvinyl butyral resin of 0.2-0.5 part, stir, when to reach rotary viscosity be 4000 centipoise to powder degree, discharging, obtains component A;
Take 56-62 part first amine curing agent, under agitation, add 20-30 part ethanol and 12-18 part second amine curing agent, stir, obtain B component;
Be 5:1 mixing by described component A and described B component according to weight ratio, obtain the high protective system being applicable to airless spraying.
8. the preparation method being applicable to the high protective system of airless spraying according to claim 7, is characterized in that, also adds the step of the 3rd epoxy resin of 0.5-1 weight part in oriented described mixing vessels.
9. the preparation method being applicable to the high protective system of airless spraying according to claim 7 or 8, it is characterized in that, obtain in the step of component A described, in the step obtaining described mixture, add the step of 3-6 parts by weight of phosphoric acid zinc and 1-6 weight part zinc powder in addition.
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| CN104927584A (en) * | 2015-07-08 | 2015-09-23 | 安庆联泰电子科技有限公司 | Novel water-based epoxy nano-paint |
| CN107286756A (en) * | 2017-06-27 | 2017-10-24 | 中车青岛四方机车车辆股份有限公司 | A kind of low temperature resistant corrosion-resistant epoxy paint and preparation method and application |
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| CN104927584A (en) * | 2015-07-08 | 2015-09-23 | 安庆联泰电子科技有限公司 | Novel water-based epoxy nano-paint |
| CN107286756A (en) * | 2017-06-27 | 2017-10-24 | 中车青岛四方机车车辆股份有限公司 | A kind of low temperature resistant corrosion-resistant epoxy paint and preparation method and application |
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