CN103834262A - Nano composite coating - Google Patents
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- CN103834262A CN103834262A CN201210488978.8A CN201210488978A CN103834262A CN 103834262 A CN103834262 A CN 103834262A CN 201210488978 A CN201210488978 A CN 201210488978A CN 103834262 A CN103834262 A CN 103834262A
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Abstract
The invention discloses a nano composite coating which comprises the following components: epoxy resin, polysiloxane resin, titanium dioxide, talcum powder, a nano material, an assistant, an organic solvent and the like. The coating provided by the invention can be cured to form a film at normal temperature and is convenient to use, and has the advantages of no use of heat sources, reduction of energy consumption, and good corrosion resistance and ultraviolet radiation aging resistance, so that the service life of the coating is greatly prolonged. The coating is particularly suitable for corrosion resistance demands of large industrial steel structures such as atmospheric regions of sea oil platforms, oil tanks, superstructures of ships and bridges.
Description
Technical field
The invention belongs to paint field, be specifically related to a kind of nano composite dope.
Background technology
Along with the continuous growth of petroleum-based energy demand, the exploitation of oil and gas and exploration are moved towards ocean from land gradually.Offshore oil platform is the important device that ensures marine petroleum development, due to for a long time in ocean environment, offshore oil platform can be subject to the heavy corrosion of severe ocean environment, is equivalent to the C5-M class in the classification of ISO 12944-5 corrosive environment, the harshest, the most complicated corrosive environment.Therefore, protection production vessel long-term safety is produced, and protection against corrosion is an important and necessary job.Coating for large-scale steel structures such as offshore platforms not only requires excellent property, and it is many that the life-span also must be grown than general protective system.
In heavy duty system field, polysiloxane technology has obtained in the industry more and more application.Chinese patent CN 101463223A has prepared a kind of epoxide modified organosilicon coating, has improved sticking power through epoxide modified organosilicon coating, has improved the easily defect of cracking of common inorganic resin coating; Chinese patent CN 101679799A discloses a kind of coating composition containing silicone resin, said composition has been improved snappiness, hardness, shock resistance and the erosion resistance etc. of coating to a certain extent, but these coating compositions still exist ultraviolet aging resistance, the corrosion-resistant deficiency such as lower in long severe environment.
Nano material can be improved the sticking power of coating, improves the performances such as wear resistance, ultraviolet-resistant aging.Chinese patent CN 1919948A has prepared a kind of nano silicon organosilicon coating, can improve the compactness of film, the impact of opposing atomic oxygen, and shielding ultraviolet rays, and can play and strengthen toughness reinforcing effect polymkeric substance.Chinese patent CN 101429355A has introduced a kind of nano-organosilicon composite coating, and the coating obtaining has good hardness, wear resistance and weathering resistance.But these organosilicon coatings must heat ability film-forming, concerning the anticorrosive coating for large-scale steel structures such as offshore platforms, self-vulcanizing is not only conducive to construction, and can significantly reduce energy consumption.
The present invention combines the advantage of nanotechnology and polysiloxane, mainly for the protection against corrosion of offshore platform atmospheric zone, ageing-resistant requirement, be also applicable to the large-scale steel structure such as superstructure and industrial equipments of oil tank, wind power plant, bridge spanning the sea, boats and ships simultaneously.
Summary of the invention
For above-mentioned deficiency, the object of the invention is, provides the one can be in self-vulcanizing, and protection against corrosion and the good nano composite dope of shielding ultraviolet rays performance.
For achieving the above object, technical scheme provided by the present invention is:
A kind of nano composite dope, it contains component A and B component, and the weight proportion of component A and B component is 5:1～2:1, and wherein the component of component A and weight percent thereof are as follows:
Epoxy resin 10～60%,
Polyorganosiloxane resin 10～70%,
Titanium dioxide 5～30%,
Talcum powder 2～10%,
Nano material 1～10%,
Auxiliary agent 0.1～2%,
Organic solvent 1～15%;
Component and the weight percent thereof of B component are as follows:
Amine is or/and aminosilane 50～90%,
Organic solvent 1～50%.
Described epoxy resin is that aromatic epoxy resin is or/and non-aromatic epoxy resin; Aromatic epoxy resin is as bisphenol A epoxide resin etc., and non-aromatic epoxy resin is as diglycidylether of hydrogenated bisphenol A epoxy resin etc.Preferred non-aromatic epoxy resin, includes but not limited to: as the DER 732 of DOW CORNING, DER 736; ST 1000 and the ST 3000 etc. of Tohto Kasei.Epoxy resin content accounts for 10～60% (wt) of component A total amount, preferably at 20～45% (wt).
Described polyorganosiloxane resin comprises and contains alkoxyl group or/and the polyorganosiloxane resin of silanol group functional group; Include but not limited to: the DC 3074 of DOW CORNING, DC 3037, DC-840 etc.; Watt gram SY-550, SY-231, SY-300 and SY-440 etc.Polyorganosiloxane resin content accounts for 10～70% (wt) of component A total amount, preferably at 35～65% (wt).
Described titanium dioxide is rutile titanium dioxide; The rutile titanium dioxide that the preferred weathering resistance of titanium dioxide is good, includes but not limited to the R-960 type of Du Pont, R706 type etc.
Described talcous particle diameter is for being more than or equal to 800 orders;
Described nano material is Powdered or disperses aqueous nano-TiO
2or/and nanometer SiO
2, wherein pulverous nano-TiO
2, nanometer SiO
2particle diameter for being not more than 100nm;
Nano-TiO
2or/and nanometer SiO
2can there be two kinds of forms of powder or dispersion liquid.Content is not more than 10% (wt) of component A total amount, preferably at 2～8% (wt).Particle diameter is being not more than between 100nm, preferably at 10～60nm.Nano-material surface can not pass through surface treatment, also can pass through surface treatment, as inorganic modified processing, includes but not limited to one or more coated processing such as silicon-dioxide, aluminum oxide, zirconium white; As organic modification, include but not limited to one or more coated processing such as stearic acid, lauric acid, oleic acid, titanate coupling agent, silane coupling agent; Or inorganic organic composite modification.Preferably pass through the nano-TiO of silane coupling agent processing
2with nanometer SiO
2dispersion liquid.
Described auxiliary agent is one or more mixtures that mix in dispersion agent, flow agent, anti-settling agent, UV stablizer, wetting agent, thixotropic agent, softening agent, defoamer;
Described organic solvent is one or more mixtures that mix in aromatic hydrocarbons, alcohol, ether, ester, ether alcohol, ketone.Preferred aromatic hydrocarbons and esters solvent, as toluene, dimethylbenzene, ethyl acetate, butylacetate etc.
In B component, suitable solidifying agent comprises amine or/and aminosilane, preferably aminosilane and composition thereof.
The general formula of described aminosilane is Y-Si-(O-X)
3, wherein, X is alkyl, hydroxyalkyl, alkoxyalkyl or the hydroxy alkoxy alkyl that is not more than 6 carbon atoms; Y is H (HNR)
a, the integer that a is 1～6, R is the organic group that is selected from aryl, alkyl, di alkylaryl, alkoxyalkyl or cycloalkyl.Preferred aminosilane includes but not limited to: aminoethyl aminopropyl triethoxysilane, dibutylamine methyl three butoxy silanes, aminoethyl aminomethyl phenyl Trimethoxy silane, cyclohexyl aminomethyl methyldiethoxysilane, γ-aminopropyltrimethoxysilane, γ-aminopropyl methyl dimethoxysilane etc.As the Z6020 of DOW CORNING, Z-6436; The A1100 of GE, A2100 etc.
Described B component also comprises organic catalyst, and its weight percent is less than or equal to 5%,
Described organic catalyst is the one in dibutyl tin laurate, dibutyltin diacetate, organic titanate, lead octoate 36, bismuth naphthenate, manganese octoate, acetopyruvic acid vanadium, tin protochloride, zinc naphthenate, mercuric acetate.Organic catalyst can be accelerated the curing speed of film, but is not necessarily must use.If need to use catalyzer time, catalyzer includes but not limited to dibutyl tin laurate, dibutyltin diacetate, organic titanate, lead octoate 36, bismuth naphthenate, manganese octoate, acetopyruvic acid vanadium, tin protochloride, zinc naphthenate, mercuric acetate etc.Preferably dibutyl tin laurate.Catalyst content is not more than 5% of B component total amount, and catalyzer must be together with solidifying agent.
In some embodiments, coating composition of the present invention can also comprise tinting material, as pigment, dyestuff and toning agent.Pigment comprises mineral dye and pigment dyestuff, as carbon black, and iron oxide yellow, phthalein viridescent, phthalocyanine blue etc.
In some embodiments, coating composition of the present invention can also comprise Magnesium Silicate q-agent, gypsum, calcium carbonate, barite, diatomite, clay, mica, iron mica, kaolin, one of fillers such as glass flake or its mixture.
Component A and B component are stored in moistureproof container, to reduce the possibility of hydrolytic condensation, thus the life-span of increase mixture.As be kept in the metal tin of sealing.Component A and B component can adopt two-package system supply.
Base material in the present invention mainly refers to that metallic surface is as iron and steel, aluminium alloy etc.Coating provided by the invention can directly be coated in the surface of base material or first on the surface of base material, apply one priming paint, as epoxy zinc rich primer or inorganic zinc primer etc., and then applies coating.
Beneficial effect of the present invention is: method manufacturing process provided by the invention is simple and easy, and cost is low, efficiency is high; Coating provided by the invention at normal temperatures just can film-forming, easy to use, without thermal source, reduced energy consumption, and there is good erosion resistance and ultraviolet-resistant aging ability, greatly increase the service life.
Because the particle diameter of nano material own is little, surface can be high, can participate in coating crosslinked after surface modification, further improves the compactness extent of coating, reduces chlorion, oxygen isoperm, thereby improve erosion resistance, and can improve the sticking power of coating; Nano-TiO simultaneously
2with nanometer SiO
2can effectively reflect/absorb ultraviolet ray, therefore ultraviolet ray is played to shielding effect, can effectively improve coating ultraviolet aging resistance performance, thereby greatly extend the work-ing life of coating.
By reacting to each other between the aminosilane in solidifying agent and epoxy and polyorganosiloxane resin, at normal temperatures just can film-forming, easy to use, without thermal source, reduce energy consumption, be particularly suitable for the requirement for anticorrosion of the large scale industry steel construction such as offshore platform atmospheric zone, oil tank, ship superstructure, bridge.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is preparation flow figure of the present invention.
Embodiment
The first embodiment: referring to Fig. 1, the present embodiment provides a kind of nano composite dope preparation method, and it comprises the following steps:
(1) component of formulation components A: component A and weight percent thereof are as follows:
Epoxy resin 10～60%,
Polyorganosiloxane resin 10～70%,
Titanium dioxide 5～30%,
Talcum powder 2～10%,
Nano material 1～10%,
Auxiliary agent 0.1～2%,
Organic solvent 1～15%;
Described step (1), it specifically comprises the steps: that (1.1) mix 90% organic solvent of the auxiliary agent of corresponding formula ratio and corresponding formula ratio to make solution in advance, then the polyorganosiloxane resin of the epoxy resin of corresponding formula ratio and corresponding formula ratio is dissolved in solution, then put into high speed dispersor to realize even mixing, start high speed dispersor, the degree of turning of this high speed dispersor is set as 1000～1500 revs/min, and jitter time is 10～15 minutes; (1.2) after step (1.1), in solution, add the titanium dioxide of corresponding formula ratio and the talcum powder of corresponding formula ratio again, then start high speed dispersor, the degree of turning of this high speed dispersor is set as 2000～3000 revs/min, jitter time is 10～20 minutes, disperses to make slurry after action; (1.3) slurry is transferred in ball mill, then in slurry, add the nano material of corresponding formula ratio and the organic solvent of remaining corresponding formula ratio 10%, start ball mill, the degree of turning of this ball mill is set as 2500～3500 revs/min, and milling time is 4～6 hours; (1.4) after abrasive action, make component A, component A is packed in moistureproof container, pack.
(2) formulation components B: component and the weight percent thereof of B component are as follows:
Amine is or/and aminosilane 50～90%,
Organic solvent 1～50%;
Described step (2), its specifically comprise the steps: (2.1) in advance by the amine of corresponding formula ratio or/and the organic solvent of aminosilane and corresponding formula ratio mix, then put into high speed dispersor to realize even mixing, start high speed dispersor, the degree of turning of this high speed dispersor is set as 800～1600 revs/min, jitter time is 20～30 minutes, disperses to make B component after action; (2.2) B component is packed in moistureproof container, pack.B component in described step (2) also comprises the organic catalyst that can accelerate paint solidification speed, and its weight percent is less than or equal to 5%; In advance by the amine of corresponding formula ratio or/and the organic catalyst of aminosilane, corresponding formula ratio and the organic solvent of corresponding formula ratio mix, then put into high speed dispersor to realize even mixing, start high speed dispersor, the degree of turning of this high speed dispersor is set as 800～1600 revs/min, jitter time is 20～30 minutes, disperse to make B component after action, B component is packed in moistureproof container, pack.
(3) weight proportion of weighing and proportioning: component A and B component is 5:1～2:1;
(4) prepare coating: the B component of the component A of corresponding proportional quantity and corresponding proportional quantity is mixed, make coating;
(5) apply coating: coating is applied to action by the mode of one or more combinations in dip-coating, roller coat, curtain coating, spraying, brushing to the base material of required coating, make the surface of base material form the uniform film of one deck;
(6) applying action complete, is that under 5～50 ℃, the relative humidity room temperature that is 10%～80%, film automatically solidifies and is attached on base material in temperature, makes to form on the surface of this base material a layer thickness and be the protective membrane of 30～80 microns;
(7) repeating step (5), to (6), forms multilayer resist in the surface of base material, with the base material that adequately protects.
Wherein, described step (1), (2) do not have sequencing.
Implement a nano composite dope prepared by aforesaid method, it contains component A and B component, and the weight proportion of component A and B component is 5:1～2:1, and wherein the component of component A and weight percent thereof are as follows:
Epoxy resin 10～60%,
Polyorganosiloxane resin 10～70%,
Titanium dioxide 5～30%,
Talcum powder 2～10%,
Nano material 1～10%,
Auxiliary agent 0.1～2%,
Organic solvent 1～15%;
Component and the weight percent thereof of B component are as follows:
Amine is or/and aminosilane 50～90%,
Organic solvent 1～50%.
Described epoxy resin is that aromatic epoxy resin is or/and non-aromatic epoxy resin; Aromatic epoxy resin is as bisphenol A epoxide resin etc., and non-aromatic epoxy resin is as diglycidylether of hydrogenated bisphenol A epoxy resin etc.Preferred non-aromatic epoxy resin, includes but not limited to: as the DER 732 of DOW CORNING, DER 736; ST 1000 and the ST 3000 etc. of Tohto Kasei.Epoxy resin content accounts for 10～60% (wt) of component A total amount, preferably at 20～45% (wt).
Described polyorganosiloxane resin comprises and contains alkoxyl group or/and the polyorganosiloxane resin of silanol group functional group; Include but not limited to: the DC 3074 of DOW CORNING, DC 3037, DC-840 etc.; Watt gram SY-550, SY-231, SY-300 and SY-440 etc.Polyorganosiloxane resin content accounts for 10～70% (wt) of component A total amount, preferably at 35～65% (wt).
Described titanium dioxide is rutile titanium dioxide; The rutile titanium dioxide that the preferred weathering resistance of titanium dioxide is good, includes but not limited to the R-960 type of Du Pont, R706 type etc.Described talcous particle diameter is for being more than or equal to 800 orders; Described nano material is Powdered or disperses aqueous nano-TiO
2or/and nanometer SiO
2, wherein pulverous nano-TiO
2, nanometer SiO
2particle diameter for being less than or equal to 100nm; Nano-TiO
2or/and nanometer SiO
2can there be two kinds of forms of powder or dispersion liquid.Content is not more than 10% (wt) of component A total amount, preferably at 2～8% (wt).Particle diameter is being not more than between 100nm, preferably at 10～60nm.Nano-material surface can not pass through surface treatment, also can pass through surface treatment, as inorganic modified processing, includes but not limited to one or more coated processing such as silicon-dioxide, aluminum oxide, zirconium white; As organic modification, include but not limited to one or more coated processing such as stearic acid, lauric acid, oleic acid, titanate coupling agent, silane coupling agent; Or inorganic organic composite modification.Preferably pass through the nano-TiO of silane coupling agent processing
2with nanometer SiO
2dispersion liquid.
Described auxiliary agent is one or more mixtures that mix in dispersion agent, flow agent, anti-settling agent, UV stablizer, wetting agent, thixotropic agent, softening agent, defoamer;
Described organic solvent is one or more mixtures that mix in aromatic hydrocarbons, alcohol, ether, ester, ether alcohol, ketone.Preferred aromatic hydrocarbons and esters solvent, as toluene, dimethylbenzene, ethyl acetate, butylacetate etc.
In B component, suitable solidifying agent comprises amine or/and aminosilane, preferably aminosilane and composition thereof.
The general formula of described aminosilane is Y-Si-(O-X)
3, wherein, X is alkyl, hydroxyalkyl, alkoxyalkyl or the hydroxy alkoxy alkyl that is not more than 6 carbon atoms; Y is H (HNR)
a, the integer that a is 1～6, R is the organic group that is selected from aryl, alkyl, di alkylaryl, alkoxyalkyl or cycloalkyl.Preferred aminosilane includes but not limited to: aminoethyl aminopropyl triethoxysilane, dibutylamine methyl three butoxy silanes, aminoethyl aminomethyl phenyl Trimethoxy silane, cyclohexyl aminomethyl methyldiethoxysilane, γ-aminopropyltrimethoxysilane, γ-aminopropyl methyl dimethoxysilane etc.As the Z6020 of DOW CORNING, Z-6436; The A1100 of GE, A2100 etc.
Described B component also comprises organic catalyst, its weight percent is less than or equal to 5%, and described organic catalyst is the one in dibutyl tin laurate, dibutyltin diacetate, organic titanate, lead octoate 36, bismuth naphthenate, manganese octoate, acetopyruvic acid vanadium, tin protochloride, zinc naphthenate, mercuric acetate.Organic catalyst can be accelerated the curing speed of film, but is not necessarily must use.If need to use catalyzer time, catalyzer includes but not limited to dibutyl tin laurate, dibutyltin diacetate, organic titanate, lead octoate 36, bismuth naphthenate, manganese octoate, acetopyruvic acid vanadium, tin protochloride, zinc naphthenate, mercuric acetate etc.Preferably dibutyl tin laurate.Catalyst content is not more than 5% of B component total amount, and catalyzer must be together with solidifying agent.
On the basis of the above embodiment of the present invention method and component, can also add other components, to obtain specific improvement effect.In other embodiments, coating composition of the present invention can also comprise tinting material, as pigment, dyestuff and toning agent.Pigment comprises mineral dye and pigment dyestuff, as carbon black, and iron oxide yellow, phthalein viridescent, phthalocyanine blue etc.
In other embodiments, coating composition of the present invention can also comprise Magnesium Silicate q-agent, gypsum, calcium carbonate, barite, diatomite, clay, mica, iron mica, kaolin, one of fillers such as glass flake or mixture.
Component A and B component are stored in moistureproof container, to reduce the possibility of hydrolytic condensation, thus the life-span of increase mixture.As be kept in the metal tin of sealing.Component A and B component can adopt two-package system supply.
Base material in the present invention mainly refers to that metallic surface is as iron and steel, aluminium alloy etc.Coating of the present invention can directly be coated in the surface of base material or first on the surface of base material, apply one priming paint, as epoxy zinc rich primer or inorganic zinc primer etc., and then applies coating.
The second embodiment, a kind of above-mentioned nano composite dope preparation method's coating, this coating is made up of component A and B component.Wherein the component of component A and weight percent thereof are as follows: aliphatic epoxy resin 20%, alkoxy-functional polyorganosiloxane resin 40%, titanium dioxide 10%, talcum powder 10%, nanometer SiO
24%, dispersion agent 1.0%, defoamer 0.5%, flow agent 0.5%, dimethylbenzene 5%, ethyl acetate 9%.Component and the weight percent thereof of B component are as follows: aminosilane 90%, butylacetate 5%, dibutyl tin laurate 5%.The weight proportion of component A and B component is 10:3.5.
The 3rd embodiment, its from the difference of the second embodiment be component ratio in component A and B component with and weight proportion different.This coating is made up of component A and B component.Wherein the component of component A and weight percent thereof are as follows: aliphatic epoxy resin 25%, alkoxy-functional polyorganosiloxane resin 50%, titanium dioxide 6%, talcum powder 2%, nano-TiO
26%, dispersion agent 1.0%, defoamer 0.5%, flow agent 0.5%, ethyl acetate 9%.Component and the weight percent thereof of B component are as follows: aminosilane 90%, butylacetate 5%, dibutyl tin laurate 5%.The weight proportion of component A and B component is 10:4.
The 4th embodiment, its from the difference of the second embodiment be component ratio in component A and B component with and weight proportion different.This coating is made up of component A and B component.Wherein the component of component A and weight percent thereof are as follows: aliphatic epoxy resin 20%, silanol group functional polysiloxane resin 35%, titanium dioxide 15%, talcum powder 10%, nano-TiO
24%, nanometer SiO
24%, dispersion agent 1.0%, defoamer 0.5%, flow agent 0.5%, dimethylbenzene 5%, ethyl acetate 5%.Component and the weight percent thereof of B component are as follows: aminosilane 90%, butylacetate 10%.The weight proportion of component A and B component is 10:3.
The 5th embodiment, its from the difference of the second embodiment be component ratio in component A and B component with and weight proportion different.This coating is made up of component A and B component.Wherein the component of component A and weight percent thereof are as follows: aliphatic epoxy resin 20%, silanol group functional polysiloxane resin 35%, titanium dioxide 15%, talcum powder 10%, nano-TiO
23%, nanometer SiO
23%, dispersion agent 1.0%, defoamer 0.5%, flow agent 0.5%, dimethylbenzene 6%, ethyl acetate 6%.Component and the weight percent thereof of B component are as follows: aminosilane 90%, butylacetate 10%.The weight proportion of component A and B component is 10:3.
The 6th embodiment, its from the difference of the second embodiment be component ratio in component A and B component with and weight proportion different.This coating is made up of component A and B component.Wherein the component of component A and weight percent thereof are as follows: aliphatic epoxy resin 25%, alkoxy-functional polyorganosiloxane resin 50%, titanium dioxide 5%, talcum powder 2%, nano-TiO
28%, dispersion agent 1.0%, defoamer 0.5%, flow agent 0.5%, ethyl acetate 8%.Component and the weight percent thereof of B component are as follows: aminosilane 90%, butylacetate 10%.The weight proportion of component A and B component is 10:4.
The 7th embodiment, its from the difference of the second embodiment be component ratio in component A and B component with and weight proportion different.This coating is made up of component A and B component.Wherein the component of component A and weight percent thereof are as follows: aliphatic epoxy resin 25%, alkoxy-functional polyorganosiloxane resin 35%, titanium dioxide 10%, talcum powder 8%, nanometer SiO
26%, dispersion agent 1.0%, defoamer 0.5%, flow agent 0.5%, dimethylbenzene 5%, ethyl acetate 9%.Component and the weight percent thereof of B component are as follows: aminosilane 90%, butylacetate 6%, dibutyl tin laurate 4%.The ratio of component A and B component is 10:3.5.
Above-described embodiment is only the good embodiment of the present invention, and the present invention can not enumerate out whole embodiments, and the technical scheme of one of all employing above-described embodiments, or the equivalent variations of doing according to above-described embodiment, all in protection domain of the present invention.
Table 1 is to adopt the above embodiment of the present invention to obtain the performance test report of nano composite epoxy polysiloxane coating materials, the concrete test ground adopting is sandblast steel plate, priming paint is epoxy zinc rich primer, build is 50 ± 5 microns, intermediate layer paint is epoxy-mica ferric oxide intermediate layer paint, build is 100 microns of left and right, the nano composite epoxy polysiloxane coating materials that finish paint provides for various embodiments of the present invention, build is at 50 ± 5 microns, drying conditions is 25 ℃, 50% relative humidity, be 7 days time of drying, after 7 days, carry out performance test, test environment conditions is normal temperature and pressure, the performance test results is as shown in table 1.
Table 1
Can find out by the performance index in table 1, the own particle diameter of nano material adopting due to the present invention is little, surface can be high, carrying out after surface modification it, can fully to participate in coating crosslinked, the compactness extent that further improves coating, reduces chlorion, oxygen isoperm, thereby improves erosion resistance, and improve the sticking power of coating, sticking power is reached more than 1 grade; Nano-TiO of the present invention simultaneously
2with nanometer SiO
2,tested and shown by ultraviolet ray ageing, it can effectively reflect/absorb ultraviolet ray, and ultraviolet ray is played to shielding effect, can effectively improve coating ultraviolet aging resistance performance, thereby greatly extend the work-ing life of coating.
Coating provided by the invention is by reacting to each other between the aminosilane in solidifying agent and epoxy and polyorganosiloxane resin, at normal temperatures just can film-forming, easy to use, without thermal source, reduce energy consumption, be particularly suitable for the requirement for anticorrosion of the large scale industry steel construction such as offshore platform atmospheric zone, oil tank, ship superstructure, bridge.
As described in the above embodiment the present invention, adopt method same or similar with it and component and other coating of obtaining, all in protection domain of the present invention.
Claims (5)
1. a nano composite dope, is characterized in that, it contains component A and B component, and the weight proportion of component A and B component is 5:1～2:1, and wherein the component of component A and weight percent thereof are as follows:
Component and the weight percent thereof of B component are as follows:
Amine is or/and aminosilane 50～90%,
Organic solvent 1～50%.
2. nano composite dope according to claim 1, is characterized in that, described B component also comprises organic catalyst, and its weight percent is less than or equal to 5%.
3. nano composite dope according to claim 2, it is characterized in that, described organic catalyst is the one in dibutyl tin laurate, dibutyltin diacetate, organic titanate, lead octoate 36, bismuth naphthenate, manganese octoate, acetopyruvic acid vanadium, tin protochloride, zinc naphthenate, mercuric acetate.
4. nano composite dope according to claim 3, is characterized in that, described epoxy resin is that aromatic epoxy resin is or/and non-aromatic epoxy resin; Described polyorganosiloxane resin comprises and contains alkoxyl group or/and the polyorganosiloxane resin of silanol group functional group; Described titanium dioxide is rutile titanium dioxide; Described talcous particle diameter is 800 order～2000 orders; Described nano material is Powdered or disperses aqueous nano TiO 2 or/and nanometer SiO
2, wherein pulverous nano-TiO
2, nanometer SiO
2particle diameter for being less than or equal to 100nm; Described auxiliary agent is one or more mixtures that mix in dispersion agent, flow agent, anti-settling agent, UV stablizer, wetting agent, thixotropic agent, softening agent, defoamer; Described organic solvent is one or more mixtures that mix in aromatic hydrocarbons, alcohol, ether, ester, ether alcohol, ketone.
5. nano composite dope according to claim 4, is characterized in that, the general formula of described aminosilane is Y-Si-(O-X)
3, wherein, X is alkyl, hydroxyalkyl, alkoxyalkyl or the hydroxy alkoxy alkyl that is less than or equal to 6 carbon atoms; Y is H (HNR)
a, the integer that a is 1～6, R is one of organic group being selected from aryl, alkyl, di alkylaryl, alkoxyalkyl or cycloalkyl.
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| CN104387960A (en) * | 2014-11-28 | 2015-03-04 | 苏州伊埃夫化学材料科技有限公司 | High-performance nano-composite structure coating and preparation method thereof |
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