CN104449248A - High-solid anti-rust and anti-corrosion coating - Google Patents
High-solid anti-rust and anti-corrosion coating Download PDFInfo
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- CN104449248A CN104449248A CN201410430226.5A CN201410430226A CN104449248A CN 104449248 A CN104449248 A CN 104449248A CN 201410430226 A CN201410430226 A CN 201410430226A CN 104449248 A CN104449248 A CN 104449248A
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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
- 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
- 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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Abstract
The invention discloses a high-solid anti-rust and anti-corrosion coating. The coating comprises a component A and a component B in the weight ratio of 5: 1, wherein 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, 3-6 parts of zinc phosphate, 1-6 parts of zinc powder, 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-solid anti-rust and anti-corrosion coating 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, particularly relate to high solid rust-proof anti-corrosive paint 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 high solid rust-proof anti-corrosive paint, 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 epoxy iron red shop anti-corrosion primer, the organic solvent contained in coating reaches 45%-50%, easily works the mischief to environment, and this priming paint sticking power can only reach secondary, and antiseptic property is undesirable, can not meet the demand of client.
Summary of the invention
Based on this, be necessary to provide that a kind of sticking power is good, good, the eco-friendly high solid rust-proof anti-corrosive paint of antiseptic property and preparation method thereof.
A kind of high solid rust-proof anti-corrosive paint, 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, zinc phosphate 3-6 part, zinc powder 1-6 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 polyvinyl butyral resin of 0.2-0.5 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 36 parts, 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.Wherein in an embodiment, described first ring epoxy resins is shrink ether type epoxy resins, and described auxiliary agent is selected from least one in polyvinyl butyral acetal, terpolycyantoamino-formaldehyde resin and organic-silicon-modified resin.
Wherein in an embodiment, described first amine curing agent is hexanediamine, and described second amine curing agent is polymeric amide.
The preparation method of above-mentioned high solid rust-proof anti-corrosive paint, comprises the following steps:
By weight, by 18-22 part first ring epoxy resins, 10-15 part magnetic iron powder, 2-10 part red iron oxide, 3-6 part zinc phosphate, 1-6 part zinc powder and 0.1-0.2 part dispersion agent, be stirred to fineness and reach 35 microns, discharging, obtain mixture;
Take dimethylbenzene, and under constantly stirring, add 0.5-0.7 part modified alta-mud, stir, add ethanol, carry out ball milling together with described mixture, after ball milling completes, pour mixing vessels into;
18-24 part second epoxy resin is added in thinner, then under agitation adds 0.2-0.4 part nano silicon, after stirring, pour described mixing vessels into; 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 high solid rust-proof anti-corrosive paint.
Wherein in an embodiment, in the step of mixture, it is characterized in that described obtaining, obtain in the step of mixture described, add the step of the 3rd epoxy resin of 0.5-1 weight part in addition.
Wherein in an embodiment, also in oriented described mixing vessels, add the step of the polyvinyl butyral resin of 0.2-0.5 weight part.
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 solid rust-proof anti-corrosive paint sticking power 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 above-mentioned measure, 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 high solid rust-proof anti-corrosive paint, specific as follows:
1, can welding technique
High solid rust-proof anti-corrosive paint 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 high solid rust-proof anti-corrosive paint formula, add the special filmogen polyvinyl butyral acetal that welding property can be made to strengthen.In pigment, zinc powder also has this function.The welding property of this high solid rust-proof anti-corrosive paint is excellent, and 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 controls the discharge of WOC, environmentally friendly, and wherein WOC represents organic solvent in environment protection emission (not Oil solvent), environmental protection tests index.
3, rheology control technology
High solid rust-proof anti-corrosive paint 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 owing to adding the good wilkinite of thixotropic property and nanometer grade silica in high solid rust-proof anti-corrosive paint component, so high solid rust-proof anti-corrosive paint thixotropic property of the present invention is good, and coating not sagging after construction.
The preparation method of high solid rust-proof anti-corrosive paint 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 high solid rust-proof anti-corrosive paint, 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 high solid rust-proof anti-corrosive paint, add thinner, under agitation, slowly add polyvinyl butyral acetal stir about and within 10 minutes, become pulpous state and enter mixing vessels again.
Above-mentioned high solid rust-proof anti-corrosive paint, 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.
Above-mentioned high solid rust-proof anti-corrosive paint, 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 a certain amount of zinc phosphate and zinc powder, the rustless property of film can be improved.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.
Above-mentioned impregnating material, adopt method sticking power of drawing a circle to reach one-level, film salt water resistance performance rose to more than 30 days by original 7 days, improve the antiseptic property of film.
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 solid rust-proof anti-corrosive paint 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, zinc phosphate 3-6 part, zinc powder 3-4 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 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 of high solid rust-proof anti-corrosive paint.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 high solid rust-proof anti-corrosive paint, and this pigment is better to the adsorptive power of iron and steel, and 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.
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.
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 0.5-1 weight part.Namely in high solid rust-proof anti-corrosive paint, add the 3rd epoxy resin with first ring epoxy resins and the second epoxy resin different molecular weight, the film forming properties of high solid rust-proof anti-corrosive paint can be improved.In the present embodiment, the 3rd epoxy resin is massfraction is E-12 resin liquid.The molecular weight of the 3rd epoxy resin is 1400-1410g/mol.
In addition, component A also comprises the polyvinyl butyral resin of 0.2-0.5 weight part.Add the welding property that polyvinyl butyral resin can strengthen high solid rust-proof anti-corrosive paint, make it be used as shop primer.
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 described 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 preparation method of above-mentioned high solid rust-proof anti-corrosive paint, comprises the following steps:
By weight, by 18-22 part first ring epoxy resins, 10-15 part magnetic iron powder, 2-10 part red iron oxide, 3-6 part zinc phosphate, 1-6 part zinc powder and 0.1-0.2 part dispersion agent, be stirred to fineness and reach 35 microns, discharging, obtain mixture;
Take dimethylbenzene, and under constantly stirring, add 0.5-0.7 part modified alta-mud, stir, add ethanol, carry out ball milling together with described mixture, after ball milling completes, pour mixing vessels into;
18-24 part second epoxy resin is added in thinner, then under agitation adds 0.2-0.4 part nano silicon, after stirring, pour described mixing vessels into; 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 high solid rust-proof anti-corrosive paint.
With specific embodiment, the present invention is further elaborated below.
Embodiment 1
A kind of high solid rust-proof anti-corrosive paint, 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, zinc phosphate 3 parts, zinc powder 1 part, dispersion agent 0.1 part, R972 (nano silicon) 0.2 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 preparation method of above-mentioned high solid rust-proof anti-corrosive paint, comprises the following steps:
By E44 resin, magnetic iron powder, red iron oxide, zinc phosphate, zinc powder, dispersion agent, be stirred to fineness and reach 35 microns, discharging, obtain mixture;
Take dimethylbenzene, and under constantly stirring, add modified alta-mud, stir, add ethanol, carry out ball milling together with described mixture, after ball milling completes, pour mixing vessels into;
E20 resin is added in thinner, then under agitation adds nano silicon, after stirring, pour described mixing vessels into; When to reach rotary viscosity be 4000 centipoise to powder degree, discharging, obtains component A;
Take hexanediamine, under agitation, add ethanol and 651 polymeric amide, stir, obtain B component;
Be 5:1 mixing by described component A and described B component according to weight ratio, obtain high solid rust-proof anti-corrosive paint.
Embodiment 2
A kind of high solid rust-proof anti-corrosive paint, 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, E20 resin (the second epoxy resin) 24 parts, magnetic iron powder 15 parts, red iron oxide 10 parts, zinc phosphate 6 parts, zinc powder 6 parts, 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 preparation method of above-mentioned high solid rust-proof anti-corrosive paint, comprises the following steps:
By E44 resin, magnetic iron powder, red iron oxide, zinc phosphate, zinc powder, dispersion agent, be stirred to fineness and reach 35 microns, discharging, obtain mixture;
Take dimethylbenzene, and under constantly stirring, add modified alta-mud, stir, add ethanol, carry out ball milling together with described mixture, after ball milling completes, pour mixing vessels into;
E20 resin is added in thinner, then under agitation adds nano silicon, after stirring, pour described mixing vessels into; When to reach rotary viscosity be 4000 centipoise to powder degree, discharging, obtains component A;
Take hexanediamine, under agitation, add ethanol and 651 polymeric amide, stir, obtain B component;
Be 5:1 mixing by described component A and described B component according to weight ratio, obtain high solid rust-proof anti-corrosive paint.
Embodiment 3
A kind of high solid rust-proof anti-corrosive paint, 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, E20 resin (the second epoxy resin) 20 parts, 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 1.5 parts, polyvinyl butyral resin 0.3 part, ES-06 resin 1 part, 582-2 resin 1 part, E12 resin (the 3rd epoxy resin) 0.7 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 preparation method of above-mentioned high solid rust-proof anti-corrosive paint, 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 hexanediamine, under agitation, add ethanol and 651 polymeric amide, stir, obtain B component;
Be 5:1 mixing by described component A and described B component according to weight ratio, obtain
High solid rust-proof anti-corrosive paint.
Detect the high solid rust-proof anti-corrosive paint 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 high solid rust-proof anti-corrosive paint of embodiment 3 and the priming paint of comparative example are 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:
The high solid rust-proof anti-corrosive paint of table 1 embodiment 3 and the primer performance contrast table of documents
As can be seen from Table 1, the high solid rust-proof anti-corrosive paint sticking power 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. a high solid rust-proof anti-corrosive paint, 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, zinc phosphate 3-6 part, zinc powder 1-6 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. high solid rust-proof anti-corrosive paint 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. high solid rust-proof anti-corrosive paint according to claim 1, is characterized in that, described component A also comprises the polyvinyl butyral resin of 0.2-0.5 weight part.
4. the high solid rust-proof anti-corrosive paint according to any one of claim 1-3, 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. high solid rust-proof anti-corrosive paint 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. high solid rust-proof anti-corrosive paint 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. a preparation method for high solid rust-proof anti-corrosive paint, is characterized in that, comprises the following steps:
By weight, by 18-22 part first ring epoxy resins, 10-15 part magnetic iron powder, 2-10 part red iron oxide, 3-6 part zinc phosphate, 1-6 part zinc powder and 0.1-0.2 part dispersion agent, be stirred to fineness and reach 35 microns, discharging, obtain mixture;
Take dimethylbenzene, and under constantly stirring, add 0.5-0.7 part modified alta-mud, stir, add ethanol, carry out ball milling together with described mixture, after ball milling completes, pour mixing vessels into;
18-24 part second epoxy resin is added in thinner, then under agitation adds 0.2-0.4 part nano silicon, after stirring, pour described mixing vessels into; 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 high solid rust-proof anti-corrosive paint.
8. the preparation method of high solid rust-proof anti-corrosive paint according to claim 7, is characterized in that, obtains in the step of mixture described, adds the step of the 3rd epoxy resin of 0.5-1 weight part in addition.
9. the preparation method of the high solid rust-proof anti-corrosive paint according to claim 7 or 8, is characterized in that, also adds the step of the polyvinyl butyral resin of 0.2-0.5 weight part in oriented described mixing vessels.
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| CN111393955A (en) * | 2020-04-27 | 2020-07-10 | 容七英 | Anticorrosive paint for petrochemical pipelines |
| CN112898864A (en) * | 2021-01-12 | 2021-06-04 | 广东美涂士建材股份有限公司 | Anticorrosive epoxy resin coating |
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| CN104789083A (en) * | 2015-04-20 | 2015-07-22 | 无锡市太湖防腐材料有限公司 | Quick-drying zinc phosphate anti-corrosion primer based on epoxy resin and preparation method thereof |
| CN104789083B (en) * | 2015-04-20 | 2017-07-25 | 无锡市太湖防腐材料有限公司 | Quick-drying trbasic zinc phosphate anticorrosion priming paint based on epoxy resin and preparation method thereof |
| CN106381010A (en) * | 2016-08-31 | 2017-02-08 | 安徽省金盾涂料有限责任公司 | Environment-friendly type high solid heavy-sizing epoxy paint |
| CN109207019A (en) * | 2018-08-27 | 2019-01-15 | 国网河南省电力公司检修公司 | A kind of conductive anti-corrosion coating and preparation method thereof |
| CN111393955A (en) * | 2020-04-27 | 2020-07-10 | 容七英 | Anticorrosive paint for petrochemical pipelines |
| CN112898864A (en) * | 2021-01-12 | 2021-06-04 | 广东美涂士建材股份有限公司 | Anticorrosive epoxy resin coating |
| CN112898864B (en) * | 2021-01-12 | 2022-06-10 | 广东美涂士建材股份有限公司 | Anticorrosive epoxy resin coating |
| CN113897091A (en) * | 2021-11-29 | 2022-01-07 | 厦门双瑞船舶涂料有限公司 | Compound anti-settling agent of alcohol-soluble inorganic zinc silicate paint and preparation method thereof, and inorganic zinc silicate paint zinc powder component and preparation method thereof |
| CN115353794A (en) * | 2022-08-18 | 2022-11-18 | 中海油常州涂料化工研究院有限公司 | High-solid-content epoxy zinc-rich primer and preparation method thereof |
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