CN104910759A - Water-based epoxy paint and preparation method thereof - Google Patents
Water-based epoxy paint and preparation method thereof Download PDFInfo
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Abstract
The invention provides a water-based epoxy paint and a preparation method thereof. The paint comprises an amino resin, a leveling agent, distilled water, a water-based epoxy acrylic resin, a dispersing agent, a defoaming agent, iron oxide black, superfine talcum powder, precipitated baryte, zinc phosphate, a rust inhibitor and the like; and a nano MoS2 anti-wear agent and a nano CaCO3 ultraviolet absorbent are further added to enhance the properties. By reasonably designing the component types and contents, the thickness of the paint film can reach 100 mu m above, the water resistance is greater than 240 hours, the transmittivity for ultraviolet light with the wavelength of 290-400nm is less than 0.4, the wear-resistant revolution number is up to 1000-1400, the mass loss of the paint film is less than 0.07 g/100r, and the salt spray resistance is greater than 200 hours. The paint can be brushed on the internal and external walls of an iron building, has excellent protective effect, and is especially suitable for protecting iron building cultural relics.
Description
Technical field
The present invention relates to technical field of coatings, be specifically related to a kind of aqueous epoxy coating and preparation method thereof.
Background technology
Coating refers to and is coated on body surface, can bond and form the material of complete, tough and tensile protective membrane with base material.From generation so far, coating has a wide range of applications in technical field of buildings always, and its effect may be summarized to be three aspects, namely to the provide protection of buildings, decoration function and other specific function effects.In prior art, for realizing the protection to buildings, coating should design for environment for use, buildings classification, substrate feature, and such as, for promoting the fire resistance of wooden building, relevant coating should have certain flame-retarding characteristic.
With steel tower be representative irony building be in outdoor environment for a long time; along with the erosion of the factors such as Exposure to Sunlight, oxidation, acid rain; very easily there is aging, damage; therefore certain protective devices should be taked; especially part is had to the irony ancient building of antique value, more should mate effective sfgd..In prior art, be a systematic engineering of business to the protection of irony building, and coating protection is key link wherein.For realizing the available protecting to irony building, first require coating self and irony base material close fit, this just includes the bonding force, quality of forming film, solidification rate etc. of coating and irony base material; Require that coating self has the features such as excellent water-fast, anti-light aging, anti-blown sand erosion, salt spray resistance in addition.The coating products of prior art is general on the one hand not to be designed for the base material feature of irony building and environment for use; meanwhile; only a small amount of related products effect in salt fog resistance, anticorrosion, anti-blown sand impact, anti-light aging etc. has to be hoisted, is more difficult to the requirement reaching steel tower historical relic's protection.
Summary of the invention
The present invention is intended to the technological deficiency for prior art, provides a kind of aqueous epoxy coating and preparation method thereof, is a kind ofly exclusively used in irony buildings and the technical problem of the coating played a protective role to solve in prior art to lack.
Another technical problem that the present invention solves is to provide a kind of coating for the historical relic's protection of irony building.
The technical problem again that the present invention solves promotes coating to the protected effect of irony buildings.
The another technical problem that the present invention solves is the bonding force promoting coating and irony base material.
The another technical problem that the present invention solves promotes the quality of forming film of coating on irony base material.
The another technical problem that the present invention solves is the salt spray resistance promoting coating.
The another technical problem that the present invention solves is the rustless property promoting coating.
The another technical problem that the present invention solves is the wear resisting property promoting coating.
The another technical problem that the present invention solves promotes coating anti-light aging performance.
The another technical problem that the present invention solves is to provide the composition for promoting coating wear resistance used in above-mentioned coating.
The another technical problem that the present invention solves is the abrasion resistant effect promoting this composition further.
The another technical problem that the present invention solves is to provide the preparation method of above-mentioned coating.
The another technical problem that the present invention solves improves second component disperses poor effect in this preparation method.
For realizing above technical purpose, the present invention by the following technical solutions:
A kind of aqueous epoxy coating, be made up of in the ratio of 1:4 (w/w) first, second two kinds of components, wherein first component comprises the composition of following mass parts: 5 ~ 10 parts, aminoresin, flow agent 0.5 ~ 1 part, distilled water 10 ~ 15 parts; Second component comprises the composition of following mass parts: water-based epoxy acrylic resin 15 ~ 25 parts, dispersion agent 0.5 ~ 1.0 part, defoamer 0.2 ~ 0.8 part, distilled water 20 ~ 25 parts, iron black 5 ~ 10 parts, superfine talcum powder 5 ~ 10 parts, process white 5 ~ 10 parts, zinc phosphate 5 ~ 10 parts, rust-preventive agent 1 ~ 2 part, nanometer MoS
2anti-wear agent 10 ~ 20 parts, Nano-meter CaCO3
3ultraviolet absorbers 10 ~ 20 parts.
Preferably, this coating is made up of in the ratio of 1:4 (w/w) first, second two kinds of components, and wherein first component is grouped into by the one-tenth of following mass parts: 8 parts, aminoresin, flow agent 1 part, distilled water 15 parts; Second component is grouped into by the one-tenth of following mass parts: water-based epoxy acrylic resin 15 parts, dispersion agent 1 part, defoamer 0.8 part, distilled water 25 parts, iron black 10 parts, superfine talcum powder 10 parts, process white 5 parts, zinc phosphate 5 parts, rust-preventive agent 2 parts, nanometer MoS
2anti-wear agent 10 parts, Nano-meter CaCO3
3ultraviolet absorbers 10 parts.
Preferred on above two any one of technical scheme bases, described Nano-meter CaCO3
3ultraviolet absorbers mean particle size is 42 ~ 48nm, more optimizedly 45nm.
Preferred on above two any one of technical scheme bases, described nanometer MoS
2anti-wear agent mean particle size is 75 ~ 85nm, more optimizedly 80nm.
Preferred on above two any one of technical scheme bases, described flow agent is ethylene glycol monobutyl ether.
Preferred on above two any one of technical scheme bases, described dispersion agent is the model that German Bi Ke company produces is the dispersion agent of BYK190.
Preferred on above two any one of technical scheme bases, described defoamer is the model that German Bi Ke company produces is the defoamer of BYK022.
Preferred on above two any one of technical scheme bases, described nanometer MoS
2anti-wear agent is prepared by following methods:
1) with sulphur powder for solute, with CS
2, CCl
4mixture be that solution prepared by solvent, then add MoO wherein
3nano particle, described MoO
3in the add-on of nano particle and described solution, both sulphur contents mol ratio is 1:(2 ~ 4), ultrasonic disperse 25 ~ 35min after fully stirring, natural volatile dry, namely obtains coated powder;
2) step 1 is got) coated powder that obtains spreads in silica tube, and be placed in vacuum tube furnace, vacuumize 0.8 ~ 1.2Pa, pass into H
2to 0.3 ~ 0.6 × 10
5pa, Heating temperature is 680 ~ 720 DEG C, and insulation 50 ~ 70min, namely obtains nanometer MoS
2anti-wear agent.
Further preferred on this basis, step 1) described abundant stirring is that the rotating speed being not less than 500r/min stirs 12 ~ 18min, more optimizedly 15min.
Further preferred on this basis, step 1) described abundant stirring is violent stirring as far as possible.
Further preferred on this basis, step 1) described abundant stirring stirs 12 ~ 18min, more optimizedly 15min under certain agitation condition.
Further preferred on this basis, step 1) described in MoO
3nano particle is prepared with sonochemistry method.
Further preferred on this basis, step 1) described in MoO
3nano particle is that class is spherical.
Present invention also offers a kind of preparation method of above-mentioned aqueous epoxy coating, comprise the following steps:
1) Nano-meter CaCO3
3the preparation of ultraviolet absorbers: by CaCl
2and Na
2cO
3be mixed with solution respectively, get CaCL
2solution, with every 0.04mol CaCL
2the ratio of solute correspondence 3 ~ 4g PEG-10000 adds PEG-10000 wherein, fully dissolves, drips Na wherein
2cO
3solution, Na
2cO
3the dripping quantity of solution is with Ca
2+with CO
3 2-molar weight to be equally as the criterion, add the sodium polyacrylate that 1.8 ~ 2.2g molecular weight is 200 ~ 4,000,000 more wherein after dropping, fully dissolve, then room temperature ageing 2.5 ~ 3.5h, then centrifuging and taking precipitation, washing, dry, namely obtain described Nano-meter CaCO3
3ultraviolet absorbers.
2) nanometer MoS
2the preparation of anti-wear agent: with sulphur powder for solute, with CS
2, CCl
4mixture be that solution prepared by solvent, then add MoO wherein
3nano particle, described MoO
3in the add-on of nano particle and described solution, both sulphur contents mol ratio is 1:(2 ~ 4), ultrasonic disperse 25 ~ 35min after fully stirring, natural volatile dry, namely obtains coated powder; Getting described coated powder spreads in silica tube, is placed in vacuum tube furnace, vacuumizes 0.8 ~ 1.2Pa, pass into H
2to 0.3 ~ 0.6 × 10
5pa, Heating temperature is 680 ~ 720 DEG C, and insulation 50 ~ 70min, namely obtains nanometer MoS
2anti-wear agent.
3) get aminoresin and the flow agent mixing of formula ratio, under 250 ~ 350r/min agitation condition, add distilled water wherein, dispersion 25 ~ 35min, obtains first component.
4) by formula ratio by water-based epoxy acrylic resin, dispersion agent, defoamer, distilled water Homogeneous phase mixing, under the agitation condition of 800 ~ 1200r/min, add iron oxide black, superfine talcum powder, process white, zinc phosphate, rust-preventive agent, nanometer MoS
2anti-wear agent, Nano-meter CaCO3
3ultraviolet absorbers, then dispersion is until fineness is less than 20 μm, obtains second component.
Preferred on this kind of preparation method basis of above-mentioned aqueous epoxy coating, step 1) middle CaCL
2initial concentration solution is 0.3 ~ 0.5mol/L, more optimizedly 0.4mol/L.
Preferred on this kind of preparation method basis of above-mentioned aqueous epoxy coating, step 1) middle Na
2cO
3initial concentration solution is 0.3 ~ 0.5mol/L, more optimizedly 0.4mol/L.
Preferred on this kind of preparation method basis of above-mentioned aqueous epoxy coating, step 1) described in dropping complete at 23 ~ 27 DEG C, more optimizedly 25 DEG C.
Preferred on this kind of preparation method basis of above-mentioned aqueous epoxy coating, step 1) described in dropping be complete under the agitation condition of 250 ~ 350r/min, more optimizedly 300r/min.
Preferred on this kind of preparation method basis of above-mentioned aqueous epoxy coating, step 1) speed of described dropping is 0.3 ~ 0.7/s, more optimizedly 0.5/s.
Preferred on this kind of preparation method basis of above-mentioned aqueous epoxy coating, step 1) described centrifugal rotating speed is 3000r/min.
Preferred on this kind of preparation method basis of above-mentioned aqueous epoxy coating, step 1) described in washing be utilize ethanolic soln to wash three times.
Preferred on this kind of preparation method basis of above-mentioned aqueous epoxy coating, step 1) described in drying be dry 50 ~ 70min, more optimizedly dry 60min under 80 DEG C of conditions under 75 ~ 85 DEG C of conditions.
Preferred on this kind of preparation method basis of above-mentioned aqueous epoxy coating, step 4) described in the fineness that is dispersed to be less than 20 μm, be on dispersion machine, first low speed dispersion, then high speed dispersion is until fineness is less than 20 μm.Wherein said low speed dispersion is normally less than the rotating speed of 200rpm, and high speed dispersion is normally higher than the rotating speed of 500rpm; Can certainly be interpreted as and dispersion process is divided into two stages, the rotating speed of the latter half is higher than previous stage.
Preferred on this kind of preparation method basis of above-mentioned aqueous epoxy coating, step 2) described abundant stirring is that the rotating speed being not less than 500r/min stirs 12 ~ 18min, more optimizedly 15min.
Preferred on this kind of preparation method basis of above-mentioned aqueous epoxy coating, step 2) described abundant stirring is violent stirring as far as possible.
Preferred on this kind of preparation method basis of above-mentioned aqueous epoxy coating, step 2) described abundant stirring stirs 12 ~ 18min, more optimizedly 15min under certain agitation condition.
Preferred on this kind of preparation method basis of above-mentioned aqueous epoxy coating, step 2) described in MoO
3nano particle is prepared with sonochemistry method.
Preferred on this kind of preparation method basis of above-mentioned aqueous epoxy coating, step 2) described in MoO
3nano particle is that class is spherical.
In above technical scheme, superfine talcum powder is a kind of complete name of industrial raw material, and not with " ultra-fine " restriction " talcum powder ", this raw material is widely used in the industry such as plastics, rubber, coating, commercially available namely available.
Water-based epoxy acrylic resin also can be described as water dispersible epoxy acrylic resin.
Process white is also a kind of complete name of industrial raw material, commercially available namely available.
And " nanometer MoS
2anti-wear agent " and " Nano-meter CaCO3
3ultraviolet absorbers " all belong to from creating word.
Wherein " nanometer MoS
2anti-wear agent " scope that characterizes is: mean particle size is nano level MoS
2.Described nanometer MoS
2anti-wear agent can obtain by the following method: with sulphur powder for solute, with CS
2, CCl
4mixture be that solution prepared by solvent, then add MoO wherein
3nano particle, described MoO
3in the add-on of nano particle and described solution, both sulphur contents mol ratio is 1:(2 ~ 4), ultrasonic disperse 25 ~ 35min after fully stirring, natural volatile dry, namely obtains coated powder; Getting described coated powder spreads in silica tube, is placed in vacuum tube furnace, vacuumizes 0.8 ~ 1.2Pa, pass into H
2to 0.3 ~ 0.6 × 10
5pa, Heating temperature is 680 ~ 720 DEG C, and insulation 50 ~ 70min, namely obtains nanometer MoS
2anti-wear agent.
" Nano-meter CaCO3
3ultraviolet absorbers " scope that characterizes is: mean particle size is nano level CaCO
3.Described Nano-meter CaCO3
3ultraviolet absorbers can obtain by the following method: by CaCl
2and Na
2cO
3be mixed with solution respectively, get CaCL
2solution, with every 0.04mol CaCL
2the ratio of solute correspondence 3 ~ 4g PEG-10000 adds PEG-10000 wherein, fully dissolves, drips Na wherein
2cO
3solution, Na
2cO
3the dripping quantity of solution is with Ca
2+with CO
3 2-molar weight to be equally as the criterion, add the sodium polyacrylate that 1.8 ~ 2.2g molecular weight is 200 ~ 4,000,000 more wherein after dropping, fully dissolve, then room temperature ageing 2.5 ~ 3.5h, then centrifuging and taking precipitation, washing, dry, namely obtain described Nano-meter CaCO3
3ultraviolet absorbers.
In addition, in above technical scheme, described coated powder refers to MoO
3the composite granule of coated with uniform S; Described sodium polyacrylate is mainly as dispersion agent; Described PEG-10000 is not that the molecular weight of considered critical polyoxyethylene glycol is 10000 but a kind of commercial specification title, and the actual molecular weight of this specification product is generally 8500 ~ 11000, and in addition, this composition is in the present invention as coating materials; In the preparation method of water-borne coatings, step 1) and step 2) be only respectively used to prepare Nano-meter CaCO3
3ultraviolet absorbers and nanometer MoS
2anti-wear agent, these two sequence of steps are in no particular order; The aqueous epoxy coating prepared in the process of the present invention, be 1:4 by described first component, second component by formula ratio quality proportioning before use, mixing, uniform stirring, can use after slaking about 10min.
Coating main film forming substance of the present invention is disperseed to form under certain processing condition by water dispersible epoxy acrylic resin and aminoresin, and the paint film after solidification has high crosslink density, strong adhesion, high rigidity, the features such as high solids content; Strong and the environmental protection of coating and steel tower basal body binding force, has salt fog resistance, anticorrosion, anti-blown sand impacts and the requirement of characteristic conforms steel tower historical relic's protection of anti-light aging.Meanwhile, the Nano-meter CaCO3 wherein added
3the ultraviolet absorption that ultraviolet absorbers composition can significantly improve coating makes the performance enhancement of irony building surface anti-light aging; The nanometer MoS added
2anti-wear agent composition, the wear resistance that can improve coating makes irony building surface anti-blown sand aggressiveness strengthen.
Adopt the present invention to be constructed into film thickness for twice and can to reach hundred microns, produce simple, construct convenient, have without the need to advantages such as hot setting, drying at room temperature are rapid.Coating lacquer film thickness more than 100 μm, water tolerance is greater than 240h, is less than 0.4 to wavelength in the transmissivity of the UV-light of 290 ~ 400nm, and wear-resisting revolution reaches 1000 ~ 1400 turns, and painting quality loss is less than 0.07g/100r, and salt fog resistance is greater than 200 hours.This coating can brush the occasion such as inner-outer wall at steel tower buildings, has splendid protected effect to irony building, based on its above-mentioned high-performance, is particularly useful for irony building historical relic's protection field.
In optimal technical scheme, further determinant proportioning is because the feature such as quality of forming film, wear resisting property, anti-light aging performance of coating under this qualifications is more excellent.Further restriction Nano-meter CaCO3
3the mean particle size of ultraviolet absorbers makes coating anti-light aging performance better under finding this granularity condition unexpectedly.Further restriction nanometer MoS
2anti-wear agent mean particle size is owing to making the wear resistance of coating better under this granularity condition.At nanometer MoS
2limiting specific agitation condition in the preparation method of anti-wear agent is further owing to finding that its microtexture of the product obtained is more desirable in conjunction with ultrasonic disperse after the agitation condition of this fierceness.In the preparation method of described antiradar coatings, limit CaCL further
2solution and Na
2cO
3initial concentration solution is the abundant precipitation being more conducive to subsequent reactions under considering this concentration conditions; Further restriction dropping condition is because under this dropping condition, precipitin reaction is comparatively fast, comparatively fully and product microtexture is more desirable; Further preferably the dispersion pattern of second component is that two benches dispersion pattern dispersion effect is more fast more at a slow speed due to this elder generation.
Formulating of recipe of the present invention is reasonable, and in this formula range, have result of use the most remarkable, the present invention achieves outstanding technique effect with creationary technical renovation, simultaneously cost lower, be easy to realize, therefore there is outstanding promotion prospect.
Embodiment
Below will be described in detail the specific embodiment of the present invention.In order to avoid too much unnecessary details, in the examples below to belonging to known structure or function will not be described in detail.
The approximating language used in following examples can be used for quantitative expression, shows to allow quantity to have certain variation when not changing basic function.Therefore, this exact value itself is not limited to the numerical value that the language such as " approximately ", " left and right " is revised.In certain embodiments, " approximately " represents and allows its numerical value revised to change in the positive and negative scope of 10 (10%), such as, and any numerical value that what " about 100 " represented can be between 90 to 110.In addition, in the statement of " about first numerical value is to second value ", revise the first and second numerical value two numerical value approximately simultaneously.In some cases, approximating language may be relevant with the precision of surveying instrument.
Apart from outside definition, technology used in following examples and scientific terminology have the identical meanings generally understood with those skilled in the art of the invention.
In the examples below, paint film water tolerance, salt spray resistance, wear resistance and ultraviolet light transmission are comprised to the detection of coating property.Ultraviolet is the major reason producing photo-aging phenomena, and therefore the present invention evaluates its anti-ultraviolet property with coating to transmission of ultraviolet rays; Ultraviolet light transmission determinator is utilized to detect to the detection of ultraviolet transmittance in the present invention, its principle is with the common paint film of the uviolizing coating products of 290 ~ 400nm wavelength, and the uitraviolet intensity investigated through paint film accounts for the ratio of ultraviolet source strength.Paint film water tolerance detects and implements with reference to the method for GB/T1733-1993.The detection of salt spray resistance is implemented with reference to the method for GB/T1771-2007.Wear resistance detects and implements with reference to the method for GB/T1768-2006.
Embodiment 1
A kind of aqueous epoxy coating, be made up of in the ratio of 1:4 (w/w) first, second two kinds of components, wherein first component is grouped into by the one-tenth of following mass parts: 8 parts, aminoresin, flow agent 1 part, distilled water 15 parts; Second component comprises the composition of following mass parts: water dispersible epoxy acrylic resin 15 parts, dispersion agent 1 part, defoamer 0.8 part, distilled water 25 parts, iron black 10 parts, superfine talcum powder 10 parts, process white 5 parts, zinc phosphate 5 parts, rust-preventive agent 2 parts, nanometer MoS
2anti-wear agent 10 parts; Nano-meter CaCO3
3ultraviolet absorbers 10 parts.
The preparation method of above-mentioned aqueous epoxy coating, comprises the following steps:
1) Nano-meter CaCO3
3prepared by ultraviolet absorbers: by CaCL
2and Na
2cO
3be mixed with the solution that concentration is 0.4mol/L respectively.Get 200mL CaCL
2solution adds in beaker, then adds 7.0g coating materials polyoxyethylene glycol (relative molecular mass 10000), stir fully dissolve, 25 DEG C, at 300rmin
-1speed under stir, by Na
2cO
3solution instillation CaCL
2in solution, dripping speed is 1/2 seconds, CaCL
2with Na
2cO
3mol ratio be 1.After dropwising, add 2g dispersion agent sodium polyacrylate (relative molecular mass 3,000,000), stir and fully dissolve, at room temperature ageing 3h, with 3000rmin in low speed large capacity centrifuge
-1centrifugation obtain water-soluble nano CaCO
3, adopt washing with alcohol 3 times, at 80 DEG C of dry 1h, obtain Nano-meter CaCO3
3ultraviolet absorbers
2) nanometer MoS
2prepared by anti-wear agent: 1) appropriate sulphur (S) powder is dissolved in CS
2and CCL
4mixing solutions in, after S dissolves completely, then in mixed solution system, add the class ball-type MoO utilizing sonochemical method to prepare
3nano particle is (by MoO
3be 1: 3 with the mol ratio of S).After above-mentioned mixed system violent stirring 15min, ultrasonic disperse 30min, under ventilating kitchen room temperature after natural volatile dry, obtains MoO
3the composite granule of coated with uniform S.2) by MoO
3/ S composite granule spreads in silica tube equably, and inserts vacuum tube furnace reaction acquisition MoS
2nano particle.Processing parameter: be evacuated to 1Pa, passes into high-purity H
2to 0.5 × 10
5pa, Heating temperature 700 DEG C, insulation 1h.
3) agitator mixing is added, at 300rmin by the aminoresin of formula ratio and flow agent
-1speed stir under, then add deionized water, high speed dispersion 30min, obtain first component.
4) by formula ratio, water dispersible epoxy acrylic resin, dispersion agent, defoamer, distilled water are added Homogeneous phase mixing in pot of getting the raw materials ready, stir under the speed of 1000rmin-1, add superfine talcum powder, process white, zinc phosphate, rust-preventive agent, nanometer MoS
2anti-wear agent, Nano-meter CaCO3
3ultraviolet absorbers, low speed dispersion on high speed dispersor, then high speed dispersion.Under the effect of high shear force, sand milling dispersion, until fineness is less than 20 μm, obtains second component.
5) need be 1:4 by formula ratio quality proportioning by described first component, second component during construction, mixing, uniform stirring, can use after slaking 10min.
The said products is detected, obtains following detected result.
Water tolerance: 242h passes through.
To the transmissivity of wavelength in the UV-light of 290 ~ 400nm: 0.4.
Wear resistance: wear-resisting revolution reaches 1000 ~ 1400 turns, painting quality loss 0.07g (100r)
-1.
Salt fog resistance: 200h passes through.
Embodiment 2
A kind of aqueous epoxy coating, be made up of in the ratio of 1:4 (w/w) first, second two kinds of components, wherein first component is grouped into by the one-tenth of following mass parts: 8 parts, aminoresin, flow agent 1 part, distilled water 15 parts; Second component comprises the composition of following mass parts: water dispersible epoxy acrylic resin 20 parts, dispersion agent 1 part, defoamer 0.8 part, distilled water 25 parts, iron black 10 parts, superfine talcum powder 10 parts, process white 8 parts, zinc phosphate 8 parts, rust-preventive agent 2 parts, nanometer MoS
2anti-wear agent 18 parts, Nano-meter CaCO3
3ultraviolet absorbers 18 parts.
The preparation method of above-mentioned aqueous epoxy coating, comprises the following steps:
1) Nano-meter CaCO3
3prepared by ultraviolet absorbers: by CaCL
2and Na
2cO
3be mixed with the solution that concentration is 0.4mol/L respectively.Get 200mL CaCL
2solution adds in beaker, then adds 7.0g coating materials polyoxyethylene glycol (relative molecular mass 10000), stir fully dissolve, 25 DEG C, at 300rmin
-1speed under stir, by Na
2cO
3solution instillation CaCL
2in solution, dripping speed is 1/2 seconds, CaCL
2with Na
2cO
3mol ratio be 1.After dropwising, add 2g dispersion agent sodium polyacrylate (relative molecular mass 3,000,000), stir and fully dissolve, at room temperature ageing 3h, with 3000rmin in low speed large capacity centrifuge
-1centrifugation obtain water-soluble nano CaCO
3, adopt washing with alcohol 3 times, at 80 DEG C of dry 1h, obtain Nano-meter CaCO3
3ultraviolet absorbers
2) nanometer MoS
2prepared by anti-wear agent: 1) appropriate sulphur (S) powder is dissolved in CS
2and CCL
4mixing solutions in, after S dissolves completely, then in mixed solution system, add the class ball-type MoO utilizing sonochemical method to prepare
3nano particle is (by MoO
3be 1: 3 with the mol ratio of S).After above-mentioned mixed system violent stirring 15min, ultrasonic disperse 30min, under ventilating kitchen room temperature after natural volatile dry, obtains MoO
3the composite granule of coated with uniform S.2) by MoO
3/ S composite granule spreads in silica tube equably, and inserts vacuum tube furnace reaction acquisition MoS
2nano particle.Processing parameter: be evacuated to 1Pa, passes into high-purity H
2to 0.5 × 10
5pa, Heating temperature 700 DEG C, insulation 1h.
3) agitator mixing is added, at 300rmin by the aminoresin of formula ratio and flow agent
-1speed stir under, then add deionized water, high speed dispersion 30min, obtain first component.
4) by formula ratio, water dispersible epoxy acrylic resin, dispersion agent, defoamer, distilled water are added Homogeneous phase mixing in pot of getting the raw materials ready, at 1000rmin
-1speed under stir, add superfine talcum powder, process white, zinc phosphate, rust-preventive agent, nanometer MoS
2anti-wear agent, Nano-meter CaCO3
3ultraviolet absorbers, low speed dispersion on high speed dispersor, then high speed dispersion.Under the effect of high shear force, sand milling dispersion, until fineness is less than 20 μm, obtains second component.
5) need be 1:4 by formula ratio quality proportioning by described first component, second component during construction, mixing, uniform stirring, can use after slaking 10min.
The said products is detected, obtains following detected result.
Water tolerance: 270h passes through.
To the transmissivity of wavelength in the UV-light of 290 ~ 400nm: 0.36.
Wear resistance: wear-resisting revolution reaches 1000 ~ 1400 turns, painting quality loss 0.65g (100r)
-1.
Salt fog resistance: 261h passes through.
Embodiment 3
A kind of aqueous epoxy coating, be made up of in the ratio of 1:4 (w/w) first, second two kinds of components, wherein first component is grouped into by the one-tenth of following mass parts: 8 parts, aminoresin, flow agent 1 part, distilled water 15 parts; Second component comprises the composition of following mass parts: water-based epoxy acrylic resin 25 parts, dispersion agent 1 part, defoamer 0.8 part, distilled water 25 parts, iron black 10 parts, superfine talcum powder 10 parts, process white 10 parts, zinc phosphate 10 parts, rust-preventive agent 2 parts, nanometer MoS
2anti-wear agent 20 parts, Nano-meter CaCO3
3ultraviolet absorbers 20 parts.
The preparation method of above-mentioned aqueous epoxy coating, comprises the following steps:
1) nanometer MoS
2prepared by anti-wear agent: 1) appropriate sulphur (S) powder is dissolved in CS
2and CCL
4mixing solutions in, after S dissolves completely, then in mixed solution system, add the class ball-type MoO utilizing sonochemical method to prepare
3nano particle is (by MoO
3be 1: 3 with the mol ratio of S).After above-mentioned mixed system violent stirring 15min, ultrasonic disperse 30min, under ventilating kitchen room temperature after natural volatile dry, obtains MoO
3the composite granule of coated with uniform S.2) by MoO
3/ S composite granule spreads in silica tube equably, and inserts vacuum tube furnace reaction acquisition MoS
2nano particle.Processing parameter: be evacuated to 1Pa, passes into high-purity H
2to 0.5 × 10
5pa, Heating temperature 700 DEG C, insulation 1h.
2) Nano-meter CaCO3
3prepared by ultraviolet absorbers: by CaCL
2and Na
2cO
3be mixed with the solution that concentration is 0.4mol/L respectively.Get 200mLCaCL
2solution adds in beaker, then adds 7.0g coating materials polyoxyethylene glycol (relative molecular mass 10000), stir fully dissolve, 25 DEG C, at 300rmin
-1speed under stir, by Na
2cO
3solution instillation CaCL
2in solution, dripping speed is 1/2 seconds, CaCL
2with Na
2cO
3mol ratio be 1.After dropwising, add 2g dispersion agent sodium polyacrylate (relative molecular mass 3,000,000), stir and fully dissolve, at room temperature ageing 3h, with 3000rmin in low speed large capacity centrifuge
-1centrifugation obtain water-soluble nano CaCO
3, adopt washing with alcohol 3 times, at 80 DEG C of dry 1h, obtain Nano-meter CaCO3
3ultraviolet absorbers.
3) agitator mixing is added, at 300rmin by the aminoresin of formula ratio and flow agent
-1speed stir under, then add deionized water, high speed dispersion 30min, obtain first component.
4) by formula ratio, water dispersible epoxy acrylic resin, dispersion agent, defoamer, distilled water are added Homogeneous phase mixing in pot of getting the raw materials ready, at 1000rmin
-1speed under stir, add superfine talcum powder, process white, zinc phosphate, rust-preventive agent, nanometer MoS
2anti-wear agent, Nano-meter CaCO3
3ultraviolet absorbers, low speed dispersion on high speed dispersor, then high speed dispersion.Under the effect of high shear force, sand milling dispersion, until fineness is less than 20 μm, obtains second component.
5) need be 1:4 by formula ratio quality proportioning by described first component, second component during construction, mixing, uniform stirring, can use after slaking 10min.
The said products is detected, obtains following detected result.
Water tolerance: 300h passes through.
To the transmissivity of wavelength in the UV-light of 290 ~ 400nm: 0.33.
Wear resistance: wear-resisting revolution reaches 1000 ~ 1400 turns, painting quality loss 0.61g (100r)
-1.
Salt fog resistance: 280 hours.
Embodiment 4
A kind of aqueous epoxy coating, it is characterized in that being made up of in the ratio of 1:4 (w/w) first, second two kinds of components, wherein first component is grouped into by the one-tenth of following mass parts: 5 parts, aminoresin, flow agent 0.5 part, distilled water 10 parts; Second component is grouped into by the one-tenth of following mass parts: water-based epoxy acrylic resin 15 parts, dispersion agent 0.5 part, defoamer 0.2 part, distilled water 20 parts, iron black 5 parts, superfine talcum powder 5 parts, process white 5 parts, zinc phosphate 5 parts, rust-preventive agent 1 part, nanometer MoS
2anti-wear agent 10 parts, Nano-meter CaCO3
3ultraviolet absorbers 10 parts.Wherein Nano-meter CaCO3
3ultraviolet absorbers mean particle size is 48nm, nanometer MoS
2anti-wear agent mean particle size is 85nm.
A kind of above-mentioned nanometer MoS
2anti-wear agent, prepared by following methods:
1) with sulphur powder for solute, with CS
2, CCl
4mixture be that solution prepared by solvent, then add MoO wherein
3nano particle, described MoO
3in the add-on of nano particle and described solution, both sulphur contents mol ratio is 1:2, ultrasonic disperse 25min after fully stirring, and natural volatile dry, namely obtains coated powder, and wherein said abundant stirring is that the rotating speed being not less than 500r/min stirs 12min.
2) step 1 is got) coated powder that obtains spreads in silica tube, and be placed in vacuum tube furnace, vacuumize 0.8Pa, pass into H
2to 0.3 × 10
5pa, Heating temperature is 680 DEG C, and insulation 50min, namely obtains nanometer MoS
2anti-wear agent.
The preparation method of above-mentioned aqueous epoxy coating, comprises the following steps:
1) Nano-meter CaCO3
3the preparation of ultraviolet absorbers: by CaCl
2and Na
2cO
3be mixed with solution respectively, get CaCL
2solution, with every 0.04mol CaCL
2the ratio of the corresponding 3g PEG-10000 of solute adds PEG-10000 wherein, fully dissolves, drips Na wherein
2cO
3solution, Na
2cO
3the dripping quantity of solution is with Ca
2+with CO
3 2-molar weight to be equally as the criterion, add the sodium polyacrylate that 1.8g molecular weight is 2,000,000 more wherein after dropping, fully dissolve, then room temperature ageing 2.5h, then centrifuging and taking precipitation, washing, dry, namely obtain described Nano-meter CaCO3
3ultraviolet absorbers.
2) nanometer MoS
2the preparation of anti-wear agent: with reference to the preceding method of the present embodiment, concrete steps slightly.
3) get aminoresin and the flow agent mixing of formula ratio, under 250r/min agitation condition, add distilled water wherein, dispersion 25min, obtains first component.
4) by formula ratio by water-based epoxy acrylic resin, dispersion agent, defoamer, distilled water Homogeneous phase mixing, under the agitation condition of 800r/min, add iron oxide black, superfine talcum powder, process white, zinc phosphate, rust-preventive agent, nanometer MoS
2anti-wear agent, Nano-meter CaCO3
3ultraviolet absorbers, then dispersion is until fineness is less than 20 μm, obtains second component.
On this basis, meet the following conditions:
Step 1) middle CaCL
2solution and Na
2cO
3initial concentration solution is 0.3mol/L respectively.
Step 1) described in dropping complete in following condition: 23 DEG C, under the agitation condition of 250r/min, drip with the speed of 0.3/s.
Step 4) described in the fineness that is dispersed to be less than 20 μm, be on dispersion machine, the dispersion of first low speed, then high speed dispersion is until fineness is less than 20 μm.
Embodiment 5
A kind of aqueous epoxy coating, it is characterized in that being made up of in the ratio of 1:4 (w/w) first, second two kinds of components, wherein first component is grouped into by the one-tenth of following mass parts: 10 parts, aminoresin, flow agent 1 part, distilled water 15 parts; Second component is grouped into by the one-tenth of following mass parts: water-based epoxy acrylic resin 25 parts, dispersion agent 1.0 parts, defoamer 0.8 part, distilled water 25 parts, iron black 10 parts, superfine talcum powder 10 parts, process white 10 parts, zinc phosphate 10 parts, rust-preventive agent 2 parts, nanometer MoS
2anti-wear agent 20 parts, Nano-meter CaCO3
3ultraviolet absorbers 20 parts.Wherein Nano-meter CaCO3
3ultraviolet absorbers mean particle size is 42nm, nanometer MoS
2anti-wear agent mean particle size is 75nm.
A kind of above-mentioned nanometer MoS
2anti-wear agent, prepared by following methods:
1) with sulphur powder for solute, with CS
2, CCl
4mixture be that solution prepared by solvent, then add MoO wherein
3nano particle, described MoO
3in the add-on of nano particle and described solution, both sulphur contents mol ratio is 1:4, ultrasonic disperse 35min after fully stirring, and natural volatile dry, namely obtains coated powder, and wherein said abundant stirring is that the rotating speed being not less than 500r/min stirs 18min.
2) step 1 is got) coated powder that obtains spreads in silica tube, and be placed in vacuum tube furnace, vacuumize 1.2Pa, pass into H
2to 0.6 × 10
5pa, Heating temperature is 720 DEG C, and insulation 70min, namely obtains nanometer MoS
2anti-wear agent.
The preparation method of above-mentioned aqueous epoxy coating, comprises the following steps:
1) Nano-meter CaCO3
3the preparation of ultraviolet absorbers: by CaCl
2and Na
2cO
3be mixed with solution respectively, get CaCL
2solution, with every 0.04mol CaCL
2the ratio of the corresponding 4g PEG-10000 of solute adds PEG-10000 wherein, fully dissolves, drips Na wherein
2cO
3solution, Na
2cO
3the dripping quantity of solution is with Ca
2+with CO
3 2-molar weight to be equally as the criterion, add the sodium polyacrylate that 2.2g molecular weight is 4,000,000 more wherein after dropping, fully dissolve, then room temperature ageing 3.5h, then centrifuging and taking precipitation, washing, dry, namely obtain described Nano-meter CaCO3
3ultraviolet absorbers.
2) nanometer MoS
2the preparation of anti-wear agent: with reference to the preceding method of the present embodiment, concrete steps slightly.
3) get aminoresin and the flow agent mixing of formula ratio, under 350r/min agitation condition, add distilled water wherein, dispersion 35min, obtains first component.
4) by formula ratio by water-based epoxy acrylic resin, dispersion agent, defoamer, distilled water Homogeneous phase mixing, under the agitation condition of 1200r/min, add iron oxide black, superfine talcum powder, process white, zinc phosphate, rust-preventive agent, nanometer MoS
2anti-wear agent, Nano-meter CaCO3
3ultraviolet absorbers, then dispersion is until fineness is less than 20 μm, obtains second component.
On this basis, meet the following conditions:
Step 1) middle CaCL
2solution and Na
2cO
3initial concentration solution is 0.5mol/L respectively.
Step 1) described in dropping complete in following condition: 27 DEG C, under the agitation condition of 350r/min, drip with the speed of 0.7/s.
Embodiment 6
A kind of aqueous epoxy coating, it is characterized in that being made up of in the ratio of 1:4 (w/w) first, second two kinds of components, wherein first component is grouped into by the one-tenth of following mass parts: 6 parts, aminoresin, flow agent 0.8 part, distilled water 12 parts; Second component comprises the composition of following mass parts: water-based epoxy acrylic resin 18 parts, dispersion agent 0.7 part, defoamer 0.6 part, distilled water 22 parts, iron black 9 parts, superfine talcum powder 7 parts, process white 8 parts, zinc phosphate 6 parts, rust-preventive agent 1.2 parts, nanometer MoS
2anti-wear agent 13 parts, Nano-meter CaCO3
3ultraviolet absorbers 17 parts.Wherein Nano-meter CaCO3
3ultraviolet absorbers mean particle size is 45nm, nanometer MoS
2anti-wear agent mean particle size is 80nm.
A kind of above-mentioned nanometer MoS
2anti-wear agent, prepared by following methods:
1) with sulphur powder for solute, with CS
2, CCl
4mixture be that solution prepared by solvent, then add MoO wherein
3nano particle, described MoO
3in the add-on of nano particle and described solution, both sulphur contents mol ratio is 1:(2 ~ 4), ultrasonic disperse 25 ~ 35min after violent stirring 15min, natural volatile dry, namely obtains coated powder;
2) step 1 is got) coated powder that obtains spreads in silica tube, and be placed in vacuum tube furnace, vacuumize 0.8 ~ 1.2Pa, pass into H
2to 0.3 ~ 0.6 × 10
5pa, Heating temperature is 680 ~ 720 DEG C, and insulation 50 ~ 70min, namely obtains nanometer MoS
2anti-wear agent.
The preparation method of above-mentioned aqueous epoxy coating, comprises the following steps:
1) Nano-meter CaCO3
3the preparation of ultraviolet absorbers: by CaCl
2and Na
2cO
3be mixed with solution respectively, get CaCL
2solution, with every 0.04mol CaCL
2the ratio of the corresponding 3.5g PEG-10000 of solute adds PEG-10000 wherein, fully dissolves, drips Na wherein
2cO
3solution, Na
2cO
3the dripping quantity of solution is with Ca
2+with CO
3 2-molar weight to be equally as the criterion, add the sodium polyacrylate that 2g molecular weight is 3,000,000 more wherein after dropping, fully dissolve, then room temperature ageing 3h, then centrifuging and taking precipitation, washing, dry, namely obtain described Nano-meter CaCO3
3ultraviolet absorbers.
2) nanometer MoS
2the preparation of anti-wear agent: with sulphur powder for solute, with CS
2, CCl
4mixture be that solution prepared by solvent, then add MoO wherein
3nano particle, described MoO
3in the add-on of nano particle and described solution, both sulphur contents mol ratio is 1:3, ultrasonic disperse 30min after fully stirring, and natural volatile dry, namely obtains coated powder; Getting described coated powder spreads in silica tube, is placed in vacuum tube furnace, vacuumizes 1Pa, pass into H
2to 0.4 × 10
5pa, Heating temperature is 700 DEG C, and insulation 60min, namely obtains nanometer MoS
2anti-wear agent.
3) get aminoresin and the flow agent mixing of formula ratio, under 300r/min agitation condition, add distilled water wherein, dispersion 30min, obtains first component.
4) by formula ratio by water-based epoxy acrylic resin, dispersion agent, defoamer, distilled water Homogeneous phase mixing, under the agitation condition of 1000r/min, add iron oxide black, superfine talcum powder, process white, zinc phosphate, rust-preventive agent, nanometer MoS
2anti-wear agent, Nano-meter CaCO3
3ultraviolet absorbers, then dispersion is until fineness is less than 20 μm, obtains second component.
Above embodiments of the invention have been described in detail, but described content is only preferred embodiment of the present invention, not in order to limit the present invention.All make in application range of the present invention any amendment, equivalent to replace and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an aqueous epoxy coating, it is characterized in that being made up of the ratio of first, second two kinds of components by weight 1:4, wherein first component comprises the composition of following mass parts: 5 ~ 10 parts, aminoresin, flow agent 0.5 ~ 1 part, distilled water 10 ~ 15 parts;
Second component comprises the composition of following mass parts: water-based epoxy acrylic resin 15 ~ 25 parts, dispersion agent 0.5 ~ 1.0 part, defoamer 0.2 ~ 0.8 part, distilled water 20 ~ 25 parts, iron black 5 ~ 10 parts, superfine talcum powder 5 ~ 10 parts, process white 5 ~ 10 parts, zinc phosphate 5 ~ 10 parts, rust-preventive agent 1 ~ 2 part, nanometer MoS
2anti-wear agent 10 ~ 20 parts, Nano-meter CaCO3
3ultraviolet absorbers 10 ~ 20 parts.
2. aqueous epoxy coating according to claim 1, it is characterized in that this coating is made up of the ratio of first, second two kinds of components by weight 1:4, wherein first component is grouped into by the one-tenth of following mass parts: 8 parts, aminoresin, flow agent 1 part, distilled water 15 parts;
Second component is grouped into by the one-tenth of following mass parts: water-based epoxy acrylic resin 15 parts, dispersion agent 1 part, defoamer 0.8 part, distilled water 25 parts, iron black 10 parts, superfine talcum powder 10 parts, process white 5 parts, zinc phosphate 5 parts, rust-preventive agent 2 parts, nanometer MoS
2anti-wear agent 10 parts, Nano-meter CaCO3
3ultraviolet absorbers 10 parts.
3. aqueous epoxy coating according to claim 1 and 2, is characterized in that described Nano-meter CaCO3
3ultraviolet absorbers mean particle size is 42 ~ 48nm.
4. aqueous epoxy coating according to claim 1 and 2, is characterized in that described nanometer MoS
2anti-wear agent mean particle size is 75 ~ 85nm.
5. aqueous epoxy coating according to claim 1 and 2, is characterized in that described MoS
2anti-wear agent is prepared by following methods:
1) with sulphur powder for solute, with CS
2, CCl
4mixture be that solution prepared by solvent, then add MoO wherein
3nano particle, described MoO
3in the add-on of nano particle and described solution, both sulphur contents mol ratio is 1:2 ~ 1:4, ultrasonic disperse 25 ~ 35min after fully stirring, and natural volatile dry, namely obtains coated powder;
2) step 1 is got) coated powder that obtains spreads in silica tube, and be placed in vacuum tube furnace, vacuumize 0.8 ~ 1.2Pa, pass into H
2to 0.3 ~ 0.6 × 10
5pa, Heating temperature is 680 ~ 720 DEG C, and insulation 50 ~ 70min, namely obtains nanometer MoS
2anti-wear agent.
6. aqueous epoxy coating according to claim 5, is characterized in that step 1) described abundant stirring be not less than 500r/min rotating speed stir 12 ~ 18min.
7. a kind of preparation method of aqueous epoxy coating described in claim 1 or 2, is characterized in that comprising the following steps:
1) Nano-meter CaCO3
3the preparation of ultraviolet absorbers: by CaCl
2and Na
2cO
3be mixed with solution respectively, get CaCL
2solution, with every 0.04mol CaCL
2the ratio of solute correspondence 3 ~ 4g PEG-10000 adds PEG-10000 wherein, fully dissolves, drips Na wherein
2cO
3solution, Na
2cO
3the dripping quantity of solution is with Ca
2+with CO
3 2-molar weight to be equally as the criterion, add the sodium polyacrylate that 1.8 ~ 2.2g molecular weight is 200 ~ 4,000,000 more wherein after dropping, fully dissolve, then room temperature ageing 2.5 ~ 3.5h, then centrifuging and taking precipitation, washing, dry, namely obtain described Nano-meter CaCO3
3ultraviolet absorbers;
2) nanometer MoS
2the preparation of anti-wear agent: with sulphur powder for solute, with CS
2, CCl
4mixture be that solution prepared by solvent, then add MoO wherein
3nano particle, described MoO
3in the add-on of nano particle and described solution, both sulphur contents mol ratio is 1:2 ~ 1:4, ultrasonic disperse 25 ~ 35min after fully stirring, and natural volatile dry, namely obtains coated powder; Getting described coated powder spreads in silica tube, is placed in vacuum tube furnace, vacuumizes 0.8 ~ 1.2Pa, pass into H
2to 0.3 ~ 0.6 × 10
5pa, Heating temperature is 680 ~ 720 DEG C, and insulation 50 ~ 70min, namely obtains nanometer MoS
2anti-wear agent;
3) get aminoresin and the flow agent mixing of formula ratio, under 250 ~ 350r/min agitation condition, add distilled water wherein, dispersion 25 ~ 35min, obtains first component;
4) by formula ratio by water-based epoxy acrylic resin, dispersion agent, defoamer, distilled water Homogeneous phase mixing, under the agitation condition of 800 ~ 1200r/min, add iron oxide black, superfine talcum powder, process white, zinc phosphate, rust-preventive agent, nanometer MoS
2anti-wear agent, Nano-meter CaCO3
3ultraviolet absorbers, then dispersion is until fineness is less than 20 μm, obtains second component.
8. preparation method according to claim 7, is characterized in that step 1) middle CaCL
2solution and Na
2cO
3initial concentration solution is 0.3 ~ 0.5mol/L respectively.
9. preparation method according to claim 7, is characterized in that step 1) described in dropping complete in following condition: 23 ~ 27 DEG C, under the agitation condition of 250 ~ 350r/min, drip with the speed of 0.3 ~ 0.7/s.
10. preparation method according to claim 7, is characterized in that step 4) described in the fineness that is dispersed to be less than 20 μm, be on dispersion machine, the dispersion of first low speed, then high speed dispersion is until fineness is less than 20 μm.
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| GB2585648A (en) * | 2019-07-09 | 2021-01-20 | Applied Graphene Mat Uk Ltd | Waterborne coatings |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105153901A (en) * | 2015-09-14 | 2015-12-16 | 安徽华润涂料有限公司 | Wear-resistant paint on outer layers of household security windows and preparation method thereof |
| CN106590322A (en) * | 2015-10-19 | 2017-04-26 | 中国科学院海洋研究所 | Nanometer molybdenum sulfide anti-stripping coating and preparation method |
| CN106590322B (en) * | 2015-10-19 | 2019-08-02 | 中国科学院海洋研究所 | The resistance to release coating of a kind of nanometer of molybdenum sulfide and preparation method |
| CN106336782A (en) * | 2016-08-27 | 2017-01-18 | 苏州雅晟建筑装饰工程有限公司 | Anti-yellowing anti-scratching primer coating for wood and preparation method thereof |
| CN109233390A (en) * | 2018-08-30 | 2019-01-18 | 盛世瑶兰（深圳）科技有限公司 | A kind of environmental-protection epoxy resin coating for building |
| CN109233390B (en) * | 2018-08-30 | 2020-09-01 | 赣州市犇牛防水建材有限公司 | Environment-friendly epoxy resin coating for buildings |
| GB2585648A (en) * | 2019-07-09 | 2021-01-20 | Applied Graphene Mat Uk Ltd | Waterborne coatings |
| GB2585648B (en) * | 2019-07-09 | 2021-12-01 | Applied Graphene Mat Uk Ltd | Waterborne coatings |
| US11618831B2 (en) | 2019-07-09 | 2023-04-04 | Applied Graphene Materials Uk Limited | Waterborne coatings |
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