CN103965745A - Epoxy resin composite coating solution, and preparation method and application method thereof - Google Patents
Epoxy resin composite coating solution, and preparation method and application method thereof Download PDFInfo
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Abstract
The invention provides an epoxy resin composite coating solution. The composite coating solution comprises a solvent, epoxy resin and graphene, wherein the graphene is evenly dispersed into the solution, and the graphene accounts for 0.1-10% of the mass of the epoxy resin. In order to avoid agglomerating and improve the dispersion uniformity of the graphene, the graphene preferably is silane coupling agent-modified graphene and simultaneously is supplemented by the physical ultrasonic dispersing technology. The composite coating solution integrates the advantages of the epoxy resin and the graphene, and the obtained coating has low friction coefficient and excellent wear-resisting property when the composite coating solution is used for preparing a coating on the surface of a substrate. Therefore, the epoxy resin composite coating solution is a good anti-wear and anti-friction coating material.
Description
Technical field
The invention belongs to technical field of composite materials, be specifically related to a kind of epoxy resin compound coating solution, its preparation method and using method.
Background technology
Epoxy resin typically refers to and contains two or more epoxide groups, and the oligopolymer that three-dimensional netted insoluble not melt material is prepared in ring-opening polymerization can occur, and sometimes also makes a general reference the epoxy compounds with similarity.Epoxy resin has the performances such as good cohesiveness, erosion resistance, insulativity, high strength, is widely used in the fields such as chemical anticorrosion, machinofacture, aerospace, ship, chemical building material, hydraulic and electric engineering.But, because epoxy resin cured product is three-dimensional network-like structure, thering is very high cross-linking density, matter is crisp, easily cracks, and tribological property is difficult to meet engineering requirement, and its application is subject to certain restrictions.Therefore, improve the tribological property of epoxy resin, especially, under harsh condition, make epoxy resin obtain good properties of antifriction and wear resistance tool and be of great significance.
In recent years, adopt micro-nano filler filling epoxy resin, to improve the focus that its tribological property is research.It is filler that the people such as L.Chang be take short carbon fiber, graphite, tetrafluoroethylene and the nano titanium oxide of different content, and the epoxy resin of take has been produced multiple matrix material as matrix, has compared their parameters such as rubbing factor, wear-resistant index and Contact Temperature.Test-results shows, adding of nano titanium oxide can significantly reduce rubbing factor, thereby reduce the Contact Temperature of fibre enhancement epoxy composite material, finally make the wear resistance of matrix material greatly strengthen, even can be applicable to extreme friction environment, for example the friction contact under high contact pressure and high planing speed condition.Friction and the mechanical property of organic imvite modified epoxyresin for M.Esteves etc., has increased the Young's modulus of resin effectively, has reduced the wear rate of resin.The graphene oxide modified epoxy such as Xiao-Jun Shen, finds and SiO
2, Al
2o
3deng other fillers, compare graphene oxide wear resistance of reinforced epoxy effectively just under a very low content.Chelliah Anand Chairman philosophy is filled into glass and basalt fibre in epoxy resin, find owing to thering is good combination, to be conducive to increase wear resistance between basalt fibre and epoxy resin, and between glass fibre and epoxy resin in conjunction with poor and not wear-resisting.
Graphene, mono-layer graphite, is the two-dimensional nano material that only has a carbon atom thickness, it can warpage becomes the soccerballene of zero dimension, and be rolled into the carbon nanotube of one dimension or be stacked to three-dimensional graphite, be the component units of all carbon class materials.Graphene is that carbon atom is with sp
2the two-dimentional atomic crystal that the individual layer stacking of hydridization forms, has good thermal characteristics, mechanical property and oilness.In recent years, the graphene composite material that the Graphene of take is disperse phase becomes study hotspot, but its research mainly concentrates on the aspects such as mechanical property, mechanical property and thermal property of matrix material, and less to the research of the frictional behaviour aspect of matrix material.
Summary of the invention
The present invention is directed to the deficiency of epoxy coating aspect tribological property, a kind of epoxy resin compound coating solution is provided, while using this composite coating liquid to prepare the coating of matrix surface, the coating obtaining has low-friction coefficient and superior abrasion resistance.
The technical solution adopted in the present invention is: a kind of epoxy resin compound coating solution, by solvent, epoxy resin and Graphene, formed, and graphene uniform is dispersed in solution, and Graphene quality accounts for 0.1～10% of epoxy resin quality.
Described epoxy resin is not limit, and comprises bisphenol A type epoxy resin etc.
Described solvent is not limit, and comprises the mixed solvent of a kind of solvent in dimethylbenzene, propyl carbinol, ethanol, acetone equal solvent or the combination of two or more solvent.
As preferably, described Graphene quality accounts for 0.2～5% of epoxy resin quality.Further preferably, described Graphene quality accounts for 0.2～2% of epoxy resin quality.More preferably, described Graphene quality accounts for 0.25～1% of epoxy resin quality.Most preferably, described Graphene quality accounts for 0.25～0.75% of epoxy resin quality.
In solution preparation, when adding in epoxy resin solution, Graphene easily reunites, and therefore, as preferred, described Graphene is silane coupler modified Graphene, and silane coupling agent is coupled at Graphene surface by linked reaction.
Described silane coupling agent is not limit, and comprises one or more the mixing in KH550, KH560, KH570, KH580, KH590 etc.
A kind of preparation method of described silane coupler modified Graphene is: Graphene and silane coupling agent are dissolved in the first solvent, after being uniformly dispersed in 40～80 ℃ of water-bath environment mechanical stirring, make silane coupling agent be coupled at Graphene surface by linked reaction, then with washings such as deionized waters, remove the silane coupling agent of remained on surface, after being dried, obtain silane coupler modified Graphene.As preferentially, described drying temperature is 80～150 ℃, and be 12～72 hours time of drying.
In the preparation method of above-mentioned silane coupler modified Graphene, as preferably, described Graphene and the mass ratio of silane coupling agent are 1:5～1:100, more preferably 1:10～1:30.The first described solvent is not limit, and is preferably the mixing solutions of deionized water and ethanol, and its mass ratio is preferably 1:1～1:50, more preferably 1:10～1:20.
The present invention also provides a kind of method of preparing above-mentioned epoxy resin compound coating solution, is specially: epoxy resin is dissolved in described solvent and makes epoxy resin solution, add therein Graphene, be uniformly dispersed, obtain epoxy resin compound coating solution.
As preferably, described Graphene is silane coupler modified Graphene.
In order further to improve the dispersing uniformity of Graphene in solution, as preferably, when this compound coating solution of preparation, first Graphene is carried out to dispersion treatment,, first Graphene or silane coupler modified Graphene are dissolved in the second solvent, obtain graphene solution, then described epoxy resin solution is mixed with this graphene solution, be uniformly dispersed, obtain epoxy resin compound coating solution.
The second described solvent is not limit, and comprises the mixed solvent of a kind of solvent in acetone, ethanol, dimethylbenzene, propyl carbinol or the combination of two or more solvent.
The method of using epoxy resin compound coating solution of the present invention to prepare compound coating at matrix surface is: matrix surface clean; In described epoxy resin compound coating solution, add solidifying agent, after being uniformly dispersed, be coated in through cleaned matrix surface, after solidifying, obtain epoxy resin-Graphene compound coating.
Described solidifying agent is not limit, and comprises single polyamines, mixes polyamines, modified polyamine and congruent melting mixing polyamines.
As preferably, in described epoxy resin compound coating solution, also add defoamer.
As preferably, the described self-vulcanizing time is 12～72 hours.
In sum, the present invention is compound by epoxy resin and Graphene, anticorrosion and cohesiveness based on epoxy resin excellence, the thermal characteristics of Graphene excellence, mechanical property and oilness, material after compound combines the advantage of bi-material, when the coated material as matrix surface is used, there is good basal body binding force, and there is low frictional coefficient and excellent wear resisting property.After tested, compare with pure epoxy resin coating, in dry environment, the frictional coefficient of this compound coating declines up to 15%, and wear rate declines up to 39%; In briny environment, the frictional coefficient of this compound coating declines up to 44.4%, and wear rate declines up to 94.8%.
Accompanying drawing explanation
Fig. 1 a is the scanning electron microscope (SEM) photograph of the Graphene in the embodiment of the present invention 1;
Fig. 1 b is the transmission electron microscope picture of the Graphene in the embodiment of the present invention 1;
Fig. 2 a is the cross-section morphology figure of comparative example's 1 floating coat;
Fig. 2 b is the cross-section morphology figure of embodiment 2 floating coats;
Fig. 3 a is the macro morphology figure of embodiment 2 coatings;
Fig. 3 b is the macro morphology figure of embodiment 5 coatings;
Fig. 3 c is the macro morphology figure of embodiment 6 coatings;
Fig. 4 be comparative example 1 with embodiment 1 to embodiment 5 in variation diagram in time of the frictional coefficient of coating under drying conditions;
Fig. 5 be comparative example 1 with embodiment 1 to embodiment 5 in variation diagram in time of the frictional coefficient of coating in briny environment;
Fig. 6 be comparative example 1 with embodiment 1 to embodiment 5 in the coating polishing scratch sectional area test result figure in dry and seawater respectively.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention, it is pointed out that the following stated embodiment is intended to be convenient to the understanding of the present invention, and it is not played to any restriction effect.
Comparative example 1:
The present embodiment is the comparative example of following examples 1-6.
In the present embodiment, coating solution is comprised of 0.3g solvent and 3g epoxy resin E51.Wherein, solvent is that dimethylbenzene and propyl carbinol be take the mixed solvent that mass ratio mixes as 7:3.
The preparation method of above-mentioned coating solution is: 3g epoxy resin E51 is mixed with 0.3g mixed solvent, and then mechanical stirring is 5 minutes, obtains epoxy resin solution, and this mixed solvent is that dimethylbenzene mixes and forms with mass ratio 7:3 with propyl carbinol.
Use above-mentioned coating solution to prepare coating at matrix surface, this matrix is cast iron sheet, concrete preparation method is: in the above-mentioned coating solution making, add solidifying agent diethylenetriamine 0.33g and defoamer BYK-0280.009g, mechanical stirring 10 minutes, under normal temperature, vacuumize 10 minutes, then with the line rod spreader of 200 μ m, be coated on through cleaned matrix surface, under room temperature, solidified 24 hours, made epoxy coating.The clean method of this matrix is: first, with this matrix of sand papering, then use acetone ultrasonic cleaning.
The above-mentioned epoxy coating making is carried out to following frictional behaviour test:
(1) at dry environment, 2N load, under 5Hz frequency condition, continuance test is 20 minutes, obtains coating frictional coefficient variation diagram in time;
(2) at briny environment, 2N load, under 5Hz frequency condition, continuance test is 20 minutes, obtains coating frictional coefficient variation diagram in time;
(3) at dry environment, 5N load, continuance test after 15 minutes under 5Hz frequency condition, then measure the sectional area of polishing scratch, to characterize the wear resistance of this coating;
(4) at briny environment, 5N load, continuance test after 15 minutes under 5Hz frequency condition, then measure the sectional area of polishing scratch, to characterize the wear resistance of this coating;
Embodiment 1:
In the present embodiment, compound coating solution is comprised of solvent, epoxy resin E51 and silane coupler modified Graphene.Wherein, solvent is that dimethylbenzene and propyl carbinol be take the mixed solvent that mass ratio mixes as 7:3, and the quality of Graphene accounts for 0.25% of epoxy resin E51 quality.
The preparation method of the Graphene that this is silane coupler modified is: by Graphene and Silane coupling agent KH550 take mass ratio as 1:20 joins a certain amount of ethanol and deionized water quality than in the mixed solvent of 9:1, ultrasonic dispersion 1 hour, in 60 ℃ of water-bath environment, mechanical stirring is 5 hours, make silane coupling agent be coupled at Graphene surface by linked reaction, then with ethanol and deionized water wash, remove respectively the silane coupling agent of remained on surface for 3 times, 120 ℃ are dried 10 hours, make silane coupler modified Graphene.
The preparation method of above-mentioned compound coating solution is: silane coupler modified Graphene is mixed with acetone, and ultrasonic dispersion obtains silane coupler modified graphene solution after 30 minutes; 3g epoxy resin E51 and 0.3g mixed solvent are mixed, and then mechanical stirring is 5 minutes, obtains epoxy resin solution, and this mixed solvent is that dimethylbenzene mixes and forms with mass ratio 7:3 with propyl carbinol; Silane coupler modified graphene solution is mixed with epoxy resin solution, wherein the quality of Graphene accounts for 0.25% of epoxy resin E51 quality, ultrasonic dispersion 30 minutes, then mechanical stirring is 10 minutes, obtains epoxy resin-silane coupler modified Graphene compound coating solution.
Use above-mentioned compound coating solution to prepare compound coating at matrix surface, this matrix is identical with comparative example 1, is cast iron sheet.The preparation method of the preparation method of this coating and comparative example's 1 floating coat is basic identical, difference is that the coating making is epoxy resin-epoxy resin-silane coupler modified Graphene compound coating, and wherein the quality of Graphene accounts for 0.25% of epoxy resin E51 quality.
Above-mentioned compound coating is carried out to frictional behaviour test, and testing method is identical with the testing method in comparative example 1.
Embodiment 2:
In the present embodiment, compound coating solution is comprised of solvent, epoxy resin E51 and silane coupler modified Graphene.Wherein, solvent is that dimethylbenzene and propyl carbinol be take the mixed solvent that mass ratio mixes as 7:3, and the quality of Graphene accounts for 0.5% of epoxy resin E51 quality.
The preparation method of the Graphene that this is silane coupler modified is identical with the preparation method of Graphene silane coupler modified in embodiment 1.
The preparation method of the preparation method of above-mentioned compound coating solution and embodiment 1 floating coat coating solution is basic identical, difference is: silane coupler modified graphene solution mixes with epoxy resin solution, and wherein the quality of Graphene accounts for 0.5% of epoxy resin E51 quality.
Use above-mentioned compound coating solution to prepare compound coating at matrix surface, this matrix is identical with embodiment 1.
Above-mentioned compound coating is carried out to frictional behaviour test, and testing method is identical with the testing method in comparative example 1.
Embodiment 3:
In the present embodiment, compound coating solution is comprised of solvent, epoxy resin E51 and silane coupler modified Graphene.Wherein, solvent is that dimethylbenzene and propyl carbinol be take the mixed solvent that mass ratio mixes as 7:3, and the quality of Graphene accounts for 0.75% of epoxy resin E51 quality.
The preparation method of the Graphene that this is silane coupler modified is identical with the preparation method of Graphene silane coupler modified in embodiment 1.
In the preparation method of above-mentioned compound coating solution and embodiment 1, the preparation method of compound coating solution is basic identical, difference is: silane coupler modified graphene solution mixes with epoxy resin solution, and wherein the quality of Graphene accounts for 0.75% of epoxy resin E51 quality.
Use above-mentioned compound coating solution to prepare compound coating at matrix surface, this matrix is identical with embodiment 1.
Above-mentioned compound coating is carried out to frictional behaviour test, and testing method is identical with the testing method in comparative example 1.
Embodiment 4:
In the present embodiment, compound coating solution is comprised of solvent, epoxy resin E51 and silane coupler modified Graphene.Wherein, solvent is that dimethylbenzene and propyl carbinol be take the mixed solvent that mass ratio mixes as 7:3, and the quality of Graphene accounts for 1% of epoxy resin E51 quality.
The preparation method of the Graphene that this is silane coupler modified is identical with the preparation method of Graphene silane coupler modified in embodiment 1.
In the preparation method of above-mentioned compound coating solution and embodiment 1, the preparation method of compound coating solution is basic identical, difference is: silane coupler modified graphene solution mixes with epoxy resin solution, and wherein the quality of Graphene accounts for 1% of epoxy resin E51 quality.
Use above-mentioned compound coating solution to prepare compound coating at matrix surface, this matrix is identical with embodiment 2.
Above-mentioned compound coating is carried out to frictional behaviour test, and testing method is identical with the testing method in comparative example 1.
Embodiment 5:
In the present embodiment, compound coating solution is comprised of solvent, epoxy resin E51 and Graphene.Wherein, solvent is that dimethylbenzene and propyl carbinol be take the mixed solvent that mass ratio mixes as 7:3, and the quality of Graphene accounts for 0.5% of epoxy resin E51 quality.
The preparation method of above-mentioned compound coating solution is: Graphene is mixed with acetone, and ultrasonic dispersion obtained graphene solution after 30 minutes; 3g epoxy resin E51 and 0.3g mixed solvent are mixed, and then mechanical stirring is 5 minutes, obtains epoxy resin solution, and this mixed solvent is that dimethylbenzene mixes and forms with mass ratio 7:3 with propyl carbinol; Graphene solution is mixed with epoxy resin solution, and wherein the quality of Graphene accounts for 0.25% of epoxy resin E51 quality, ultrasonic dispersion 30 minutes, and then mechanical stirring is 10 minutes, obtains epoxy resin-Graphene compound coating solution.
Use above-mentioned compound coating solution to prepare compound coating at matrix surface, this matrix is identical with comparative example 1, is cast iron sheet.In the preparation method of this coating and comparative example 1, the preparation method of compound coating is basic identical, and difference is that the compound coating making is epoxy resin-Graphene compound coating.
Above-mentioned compound coating is carried out to frictional behaviour test, and testing method is identical with the testing method in comparative example 1.
Embodiment 6:
In the present embodiment, compound coating solution is identical with embodiment 5, also solvent, epoxy resin E51 and Graphene, consists of.Wherein, solvent is that dimethylbenzene and propyl carbinol be take the mixed solvent that mass ratio mixes as 7:3, and the quality of Graphene accounts for 0.5% of epoxy resin E51 quality.
The preparation method of the preparation method of above-mentioned compound coating solution and embodiment 5 is basic identical, and difference is Graphene not to be carried out to dispersion treatment, but Graphene is directly mixed with epoxy resin solution.Be specially: 3g epoxy resin E51 and 0.3g mixed solvent are mixed, and then mechanical stirring is 5 minutes, obtains epoxy resin solution, and this mixed solvent is that dimethylbenzene mixes and forms with mass ratio 7:3 with propyl carbinol; Graphene is mixed with epoxy resin solution, and wherein the quality of Graphene accounts for 0.25% of epoxy resin E51 quality, and mechanical stirring 10 minutes obtains epoxy resin-Graphene compound coating solution.
Use above-mentioned compound coating solution to prepare compound coating at matrix surface, this matrix is identical with comparative example 1, is cast iron sheet.In the preparation method of this coating and comparative example 1, the preparation method of compound coating is basic identical, and difference is that the compound coating making is epoxy resin-Graphene compound coating.
Fig. 1 a be above-described embodiment 5 with embodiment 6 in the scanning electron microscope (SEM) photograph of the Graphene that uses, Fig. 1 b is the transmission electron microscope picture of this Graphene.As can be seen from the figure this Graphene has lamellar structure, and easily reunites, and often multi-disc is stacked together.Therefore, in embodiment 1-4, this Graphene has been carried out to modification, obtained silane coupler modified Graphene, to avoid Graphene to reunite.
As shown in Figure 2 b, its magnification is 1000 times to the cross-section morphology figure of the compound coating making in above-described embodiment 2, and the magnification of upper right corner illustration is 5000 times.As shown in Figure 2 a, its magnification is 1000 times to the cross-section morphology figure of the coating making in comparative example 1, and the magnification of upper right corner illustration is 5000 times.Comparison diagram 2a and Fig. 2 b, can find out, in the compound coating making in embodiment 2, the Graphene of laminated structure is high-visible.Similar embodiment 2, the cross-section morphology of the compound coating making in embodiment 1,3,4,5,6 all shows the Graphene that comprises laminated structure in this compound coating.
The macro morphology of the compound coating making in above-described embodiment 2, embodiment 5 and embodiment 6 is respectively as shown in Fig. 3 a, 3b and 3c.From Fig. 3 a, can find out, in embodiment 2, through the Graphene of modification and dispersion treatment, can be dispersed in well in epoxy resin and not occur agglomeration; From Fig. 3 b, can find out, in embodiment 5, non-modified, a Graphene through dispersion treatment have obvious agglomeration in epoxy resin; ; From Fig. 3 c, can find out, in embodiment 6, the dispersiveness of the Graphene of non-modified and dispersion treatment in epoxy resin is very poor, and agglomeration is very serious, and prepared coating is very inhomogeneous.
The frictional coefficient of coating in above-mentioned comparative example 1 and embodiment 1-embodiment 5 under drying conditions variation diagram in time as shown in Figure 4.As can be seen from Figure 4, under drying conditions, with utilize comparative example 1 in do not add coating prepared by the epoxy resin solution of Graphene and compare, utilize the frictional coefficient of coating prepared by the composite solution that adds Graphene in embodiment 1-5 in epoxy resin solution and form greatly to reduce, rate of descent reaches 15%.Comparative example 5 and embodiment 2, further obtain: when other conditions are identical, by Graphene, after silane coupler modified, the frictional coefficient of compound coating further reduces.
The frictional coefficient of coating in above-mentioned comparative example 1 and embodiment 1-embodiment 5 in briny environment variation diagram in time as shown in Figure 5.As can be seen from Figure 5, in briny environment, with utilize comparative example 1 in do not add coating prepared by the epoxy resin solution of Graphene and compare, utilize the frictional coefficient of coating prepared by the composite solution that adds Graphene in embodiment 1-5 in epoxy resin solution and form greatly to reduce, rate of descent reaches 44.4%.Comparative example 5 and embodiment 2, further obtain: when other conditions are identical, by Graphene, after silane coupler modified, the frictional coefficient of compound coating further reduces.
The polishing scratch test result of coating in above-mentioned comparative example 1 and embodiment 1-embodiment 5 in dry and seawater as shown in Figure 6.As can be seen from Figure 6, under dry and sea conditions, with utilize coating prepared by epoxy resin solution and compare, the wear resistance of coating prepared by the composite solution that utilizes Graphene and epoxy resin to be compounded to form all improves greatly, under drying conditions, its wear rate declines and reaches 39%, and under marine condition, its wear rate declines and reaches 94.8%.; Embodiment 5 compares with embodiment 2, and the wear resistance in dry and seawater all has decline, but is better than comparative example 1.
Above-described embodiment has been described in detail technical scheme of the present invention; be understood that and the foregoing is only specific embodiments of the invention; be not limited to the present invention; all any modifications of making within the scope of principle of the present invention and improvement etc., within all should being included in protection scope of the present invention.
Claims (13)
1. an epoxy resin compound coating solution, it is characterized in that: solvent, epoxy resin and Graphene, consist of, graphene uniform is dispersed in solution, and Graphene quality accounts for 0.1～10% of epoxy resin quality.
2. epoxy resin compound coating solution as claimed in claim 1, is characterized in that: described Graphene quality accounts for 0.2～5% of epoxy resin quality; Further preferably, described Graphene quality accounts for 0.2～2% of epoxy resin quality; More preferably, described Graphene quality accounts for 0.25～1% of epoxy resin quality; Most preferably, described Graphene quality accounts for 0.5～0.75% of epoxy resin quality.
3. epoxy resin compound coating solution as claimed in claim 1, is characterized in that: described Graphene is silane coupler modified Graphene.
4. epoxy resin compound coating solution as claimed in claim 3, is characterized in that: described silane coupling agent is one or more the mixing in KH550, KH560, KH570, KH580, KH590.
5. epoxy resin compound coating solution as claimed in claim 3, it is characterized in that: the preparation method of described silane coupler modified Graphene is: Graphene and silane coupling agent are dissolved in the first solvent, after being uniformly dispersed in 40～80 ℃ of water-bath environment mechanical stirring, make silane coupling agent be coupled at Graphene surface by linked reaction, then with washings such as deionized waters, remove the silane coupling agent of remained on surface, after being dried, obtain silane coupler modified Graphene.
6. epoxy resin compound coating solution as claimed in claim 5, is characterized in that: described Graphene and the mass ratio of silane coupling agent are 1:5～1:100, are preferably 1:10～1:30.
7. epoxy resin compound coating solution as claimed in claim 5, is characterized in that: the first described solvent is the mixing solutions of deionized water and ethanol, and its mass ratio is 1:1～1:50, is preferably 1:10～1:20.
8. the epoxy resin compound coating solution as described in arbitrary claim in claim 1-7, is characterized in that: described epoxy resin is bisphenol A type epoxy resin.
9. the epoxy resin compound coating solution as described in arbitrary claim in claim 1-7, is characterized in that: described solvent is a kind of solvent in dimethylbenzene, propyl carbinol, ethanol, acetone or the mixed solvent of two or more solvent combination.
10. prepare the method for the epoxy resin compound coating solution as described in arbitrary claim in claim 1-7, it is characterized in that: epoxy resin is dissolved in and in solvent, makes epoxy resin solution, add therein Graphene, be uniformly dispersed, obtain epoxy resin compound coating solution.
The preparation method of 11. epoxy resin compound coating solution as claimed in claim 10, it is characterized in that: first Graphene or silane coupler modified Graphene are dissolved in the second solvent, obtain graphene solution, described epoxy resin solution is mixed with this graphene solution, be uniformly dispersed, obtain epoxy resin compound coating solution.
The preparation method of 12. epoxy resin compound coating solution as claimed in claim 11, is characterized in that: the second described solvent is the mixed solvent of a kind of solvent in acetone, ethanol, propyl carbinol, dimethylbenzene or the combination of two or more solvent.
13. use the epoxy resin compound coating solution as described in arbitrary claim in claim 1-7 at matrix surface, to prepare the method for coating, it is characterized in that: matrix surface clean; In described epoxy resin compound coating solution, add solidifying agent, after being uniformly dispersed, be coated in through cleaned matrix surface, after solidifying, obtain epoxy resin-Graphene compound coating.
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