CN102002161A - Preparation method of aminosilane-functionalized graphene reinforced silica gel - Google Patents
Preparation method of aminosilane-functionalized graphene reinforced silica gel Download PDFInfo
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Abstract
The invention provides a preparation method of aminosilane-functionalized graphene reinforced silica gel, which comprises the following steps: (1) preparation of aminosilane-functionalized graphene; and (2) preparation of aminosilane-functionalized graphene reinforced silica gel. The aminosilane-functionalized graphene has favorable dispersibility in water, ethanol, tetrahydrofuran, dimethyl sulfoxide, 3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, N-aminoethyl-3-aminopropyltrimethoxysilane, N-aminoethyl-3-aminopropylmethyldiethoxysilane and N-aminoethyl-3-aminopropyltriethoxysilane. In addition, compared with common silica gel, the compression strength of the 3-aminopropyltriethoxysilane-functionalized graphene reinforced silica gel is increased by 20%, and the toughness thereof is increased by 92%.
Description
Technical field
The grapheme material that the invention provides a kind of aminosilane functionalization strengthens the method for making of silica gel.
Background technology
Silica gel belongs to amorphous substance, and water insoluble and any solvent is nonpoisonous and tasteless, and chemical property is stable, does not react with any material except that highly basic, hydrofluoric acid.The chemical composition of silica gel and physical structure, determined it to have the advantages that many other same type of material are difficult to replace: higher physical strength etc. is stablized, had to absorption property height, Heat stability is good, chemical property.
The basic structural unit of organic silica gel product is made of silicon-oxygen chain link, and side chain then links to each other by the various organic groups of Siliciumatom and other.Therefore, both contained in the structure of organosilicon product " organic group ", and contained " inorganic structure " again, this special composition and molecular structure make it integrate the function of organic characteristic and inorganics.Compare with other macromolecular materials, the outstanding properties of organosilicon product is:
1. heatproof characteristic organosilicon not only can be high temperature resistant, and low temperature resistant, can use in a very wide temperature range.No matter be chemical property or physical and mechanical properties, all very little with variation of temperature.
2. the weathering resistance organosilicon has than the better thermostability of other macromolecular materials and anti-irradiation and weather-proof ability.Organosilicon can reach decades in work-ing life under physical environment.
3. physiology inertia polysiloxane compounds is a kind of in the compound of known non-activity.Their very anti-biological agings do not have rejection with animal body, and have anticoagulation function preferably.
4. the main chain of low surface tension and low surface energy organic silicon is very submissive, its intermolecular reactive force a little less than than hydrocarbon polymer many, therefore, lower than the hydrocarbon polymer viscosity with molecular weight, a little less than the surface tension, surface energy is little, film forming ability is strong.This low surface tension and low surface energy are that it obtains many-sided major cause of using.Have every excellent properties such as hydrophobic, froth breaking, foam stabilization, antiseized, lubricated, glazing.
The mechanical property of silica gel material, the people is as one wishes not to the utmost during particularly as thin-film material and block integral material, usually more crisp, be unable to undergo big slightly stress, thereby limited it to a certain extent and used at present, developed some new synthesizing means according to the people that understand to sol-gel process, for example supercritical extraction and freeze-drying etc. is from having solved the problem of silica gel material poor mechanical property to a great extent.Yet these method conditions needed are all relatively harsher.The method of an above difficulty of compromise solution is by adding inertia weighting material, for example Graphite Powder 99 (Tsionsky, M.; Gun, G.; Glezer, V.; Lev, O., Sol-Gel-DerivedCeramic-Carbon Composite Electrodes-Introduction and Scope ofApplications.Anal.Chem.1994,6610,1747-1753), alkylating silica gel (Gill, I.; Ballesteros, A., Encapsulation of biologicals within silicate, siloxane, and hybrid sol-gel polymers:An efficient and generic approach.J.Am.Chem.Soc.1998,120,34,8587-8598) and polymkeric substance (Wang, B.Q.; Li, B.; Wang, Z.X.; Xu, G.B.; Wang, Q.; Dong, S.J., Sol-gel thin-filmimmobilized soybean peroxidase biosensor for the amperometricdetermination of hydrogen peroxide in acid medium.Anal.Chem.1999,71,10,1935-1939) wait the mechanical property that directly strengthens silica gel material.Carbon nanotube has been used as mechanics enhancing weighting material and has added the mechanical property of improving them in the traditional material to.These work mainly concentrate on carbon nanotube enhanced polymer materials (Coleman, J.N.; Cadek, M.; Blake, R.; Nicolosi, V.; Ryan, K.P.; Belton, C.; Fonseca, A.; Nagy, J.B.; Gun ' ko, Y.K.; Blau, W.J., High-performance nanotube-reinforced plastics:Understanding themechanism of strength increase.Adv.Funct.Mater.2004,14,8,791-798), stupalith (Peigney, A., Composite materials:Tougher ceramics withnanotubes.Nat.Mater.2003,2, (1), 15-16), metallic substance (Cha, S.I.; Kim, K.T.; Arshad, S.N.; Mo, C.B.; Hong, S.H., Extraordinary StrengtheningEffect of Carbon Nanotubes in Metal-Matrix Nanocomposites Processed byMolecular-Level Mixing.Adv.Mater.2005,17,11,1377-1381) and silica gel material (Zhang, Y.J.; Shen, Y.F.; Han, D.X.; Wang, Z.J.; Song, J.X.; Niu, L., Reinforcement of silica with single-walled carbon nanotubes throughcovalent functionalization.J.Mater.Chem.2006,16,47,4592-4597).Consider that Graphene has extraordinary snappiness and big specific surface area, Graphene is also bigger as strengthening weighting material enhancing silica gel material possibility.And, in conjunction with these two kinds of functional materialss: Graphene and silica gel, will bring many potential to use.For example, Graphene (Vijayaraghavan, A.; Sciascia, C.; Dehm, S.; Lombardo, A.; Bonetti, A.; Ferrari, A.C.; Krupke, R., Dielectrophoretic Assembly of High-Density Arrays of Individual GrapheneDevices for Rapid Screening.ACS Nano 2009,3,7,1729-1734) and the block integral material of silica gel all be often used as optics (ultraviolet is not absorbed to light between infrared region).Therefore, the block integral material of carbon nanotube-silica gel will play an important role at optical field, for example planar optical waveguide, photoswitch and light amplitude limiter (Riggs, J.E.; Walker, D.B.; Carroll, D.L.; Sun, Y.P., Opticall imiting properties of suspended and solubilized carbonnanotubes.J.Phys.Chem.B 2000,104,30,7071-7076) etc.In addition, also can be expected to as electromagnetic shielding material (Yang, Y.L. as carbon nanotube-silica gel composite film material; Gupta, M.C., Novel carbon nanotube-polystyrene foam composites forelectromagnetic interference shielding.Nano Lett.2005,5, (11), 2131-2134).
Summary of the invention
In order to solve the problem that prior art exists, the grapheme material that the invention provides a kind of aminosilane functionalization strengthens the method for making of silica gel.It may further comprise the steps:
(1) a kind of preparation of grapheme material of aminosilane functionalization
Graphene oxide is joined in the aminosilane, in 70 ℃ of following back flow reaction 24 hours, obtain the black even dispersion liquid, the dispersion concentration of graphene oxide in aminosilane is 0.1～1.0mg/mL, the black dispersion liquid that obtains is filtered with 0.22 μ m nylon leaching film, and with behind the dehydrated alcohol thorough washing, redispersion is in dehydrated alcohol, this dispersion liquid is filtered with filter 0.22 μ m nylon leaching film again, use absolute ethanol washing, and dry in vacuum drying oven, obtain the grapheme material of aminosilane functionalization;
Described aminosilane is that end group is-NH
2Silane, comprising: the 3-third amino ethoxy silane, the 3-third amino methoxy silane, N-aminoethyl-3-aminopropyl trimethoxysilane, N-aminoethyl-3-aminopropyl methyl diethoxy silicon and N-aminoethyl-3-aminopropyl triethoxysilane;
(2) a kind of grapheme material of aminosilane functionalization strengthens the preparation of silica gel
The grapheme material of aminosilane functionalization is joined in the aminosilane, the dispersion concentration of the grapheme material of aminosilane functionalization in aminosilane is 0.1～1.0mg/mL, add ethanol, secondary water and formic acid subsequently and leave standstill hydrolysis, the volume ratio of aminosilane and ethanol, secondary water and formic acid is 50: 12: 16: 1, then this colloidal sol is added in the mould and placed 5 days down, obtain the Graphene silica gel material of aminosilane functionalization in 70 ℃ of environment.
Beneficial effect: the grapheme material of a kind of aminosilane functionalization provided by the invention and strengthen the method for making of silica gel based on this material, the grapheme material of resulting aminosilane functionalization all has dispersed preferably at water, ethanol, tetrahydrofuran (THF), dimethyl sulfoxide (DMSO), the 3-third amino ethoxy silane, the 3-third amino methoxy silane, N-aminoethyl-3-aminopropyl trimethoxysilane, N-aminoethyl-3-aminopropyl methyl diethoxy silicon, N-aminoethyl-3-aminopropyl triethoxysilane; And as can be seen, than ordinary silicon glue material, the compressive strength that the grapheme material of the 3-third amino ethoxy silane-functionalized strengthens silica gel has increased by 20% from Fig. 4 a, and as can be seen, toughness has increased by 92% from Fig. 4 b.
Description of drawings
Fig. 1 is that concentration is that the grapheme material (B) of the 3-third amino ethoxy silane-functionalized of preparation among 0.5mg/mL grapheme material (A) and the embodiment 1 is at secondary water (a, concentration is 0.5mg/mL), ethanol (b, concentration is 0.5mg/mL), DMF (c, concentration is 0.5mg/mL), DMSO (d, concentration is 0.5mg/mL) and the middle dispersive photo of the 3-third amino ethoxy silane (e, concentration is 1.0mg/mL).
Fig. 2 is the transmission electron microscope photo of the grapheme material of the aminosilane functionalization of preparation among the embodiment 1.
Fig. 3 is the stereoscan photograph of the grapheme material of the aminosilane functionalization of preparation among the embodiment 1.
Fig. 4 is the stress-strain curve of the grapheme material (dotted line) of the 3-third amino ethoxy silane-functionalized of preparation among pure 3-third amino ethoxy silanized silica gel material (solid line) and the embodiment 1.Wherein (a) is fail in compression and curve, (b) is the strength test curve.The disk of left and right two figure is respectively the Graphene silica gel material and the pure 3-third amino ethoxy silanized silica gel material of the 3-third amino ethoxy silane-functionalized of preparation among the embodiment 1 in the illustration.
Embodiment
(1) preparation of the grapheme material of the 3-third amino ethoxy silane-functionalized
Graphene oxide is joined in the 3-third amino ethoxy silane, the dispersion concentration of graphene oxide in the 3-third amino ethoxy silane is 0.5mg/mL, in 70 ℃ of following back flow reaction 24 hours, obtain the black even dispersion liquid, this black dispersion liquid is filtered with 0.22 μ m nylon leaching film, and with behind the dehydrated alcohol thorough washing, redispersion is in dehydrated alcohol.This dispersion liquid is filtered with filter 0.22 μ m nylon leaching film again, absolute ethanol washing, and in vacuum drying oven 30 ℃ dry 24 hours down, obtain the grapheme material of the 3-third amino ethoxy silane-functionalized.
(2) grapheme material of the 3-third amino ethoxy silane-functionalized strengthens the preparation of silica gel
The grapheme material of the 3-third amino ethoxy silane-functionalized that step (1) is obtained joins in the 3-third amino ethoxy silane, the dispersion concentration of the grapheme material of the 3-third amino ethoxy silane-functionalized in the 3-third amino ethoxy silane is 1.0mg/mL, add ethanol subsequently, secondary water and formic acid leave standstill hydrolysis, aminosilane and ethanol, the volume ratio of secondary water and formic acid is 50: 12: 16: 1, formic acid is that massfraction is 88.0%, then this colloidal sol is added in the mould and place processing 5 days down in 70 ℃ of environment, the grapheme material that obtains the 3-third amino ethoxy silane-functionalized strengthens silica gel.
Embodiment 2
Substitute the 3-third amino ethoxy silane with the 3-third amino methoxy silane, N-aminoethyl-3-aminopropyl trimethoxysilane, N-aminoethyl-3-aminopropyl methyl diethoxy silicon or N-aminoethyl-3-aminopropyl triethoxysilane, remaining is with embodiment 1.
(1) preparation of the grapheme material of the 3-third amino ethoxy silane-functionalized
Graphene oxide is joined in the 3-third amino ethoxy silane, the dispersion concentration of graphene oxide in the 3-third amino ethoxy silane is 0.1mg/mL, in 70 ℃ of following back flow reaction 24 hours, obtain the black even dispersion liquid, this black dispersion liquid is filtered with 0.22 μ m nylon leaching film, and with behind the dehydrated alcohol thorough washing, redispersion is in dehydrated alcohol.This dispersion liquid is filtered with filter 0.22 μ m nylon leaching film again, absolute ethanol washing, and in vacuum drying oven 30 ℃ dry 24 hours down, obtain the grapheme material of the 3-third amino ethoxy silane-functionalized.
(2) grapheme material of the 3-third amino ethoxy silane-functionalized strengthens the preparation of silica gel
The grapheme material of the 3-third amino ethoxy silane-functionalized that step (1) is obtained joins in the 3-third amino ethoxy silane, the dispersion concentration of the grapheme material of the 3-third amino ethoxy silane-functionalized in the 3-third amino ethoxy silane is 0.8mg/mL, add ethanol subsequently, secondary water and formic acid leave standstill hydrolysis, aminosilane and ethanol, the volume ratio of secondary water and formic acid is 50: 12: 16: 1, formic acid is that massfraction is 88.0%, then this colloidal sol is added in the mould and place processing 5 days down in 70 ℃ of environment, the grapheme material that obtains the 3-third amino ethoxy silane-functionalized strengthens silica gel.
Embodiment 4
Substitute the 3-third amino ethoxy silane with the 3-third amino methoxy silane, N-aminoethyl-3-aminopropyl trimethoxysilane, N-aminoethyl-3-aminopropyl methyl diethoxy silicon or N-aminoethyl-3-aminopropyl triethoxysilane, remaining is with embodiment 3.
Embodiment 5
(1) preparation of the grapheme material of the 3-third amino ethoxy silane-functionalized
Graphene oxide is joined in the 3-third amino ethoxy silane, the dispersion concentration of graphene oxide in the 3-third amino ethoxy silane is 0.3mg/mL, in 70 ℃ of following back flow reaction 24 hours, obtain the black even dispersion liquid, this black dispersion liquid is filtered with 0.22 μ m nylon leaching film, and with behind the dehydrated alcohol thorough washing, redispersion is in dehydrated alcohol.This dispersion liquid is filtered with filter 0.22 μ m nylon leaching film again, absolute ethanol washing, and in vacuum drying oven 30 ℃ dry 24 hours down, obtain the grapheme material of the 3-third amino ethoxy silane-functionalized.
(2) grapheme material of the 3-third amino ethoxy silane-functionalized strengthens the preparation of silica gel
The grapheme material of the 3-third amino ethoxy silane-functionalized that step (1) is obtained joins in the 3-third amino ethoxy silane, the dispersion concentration of the grapheme material of the 3-third amino ethoxy silane-functionalized in the 3-third amino ethoxy silane is 0.6mg/mL, add ethanol subsequently, secondary water and formic acid leave standstill hydrolysis, aminosilane and ethanol, the volume ratio of secondary water and formic acid is 50: 12: 16: 1, formic acid is that massfraction is 88.0%, then this colloidal sol is added in the mould and place processing 5 days down in 70 ℃ of environment, the grapheme material that obtains the 3-third amino ethoxy silane-functionalized strengthens silica gel.
Substitute the 3-third amino ethoxy silane with the 3-third amino methoxy silane, N-aminoethyl-3-aminopropyl trimethoxysilane, N-aminoethyl-3-aminopropyl methyl diethoxy silicon or N-aminoethyl-3-aminopropyl triethoxysilane, remaining is with embodiment 5.
Embodiment 7
(1) preparation of the grapheme material of the 3-third amino ethoxy silane-functionalized
Graphene oxide is joined in the 3-third amino ethoxy silane, the dispersion concentration of graphene oxide in the 3-third amino ethoxy silane is 0.8mg/mL, in 70 ℃ of following back flow reaction 24 hours, obtain the black even dispersion liquid, this black dispersion liquid is filtered with 0.22 μ m nylon leaching film, and with behind the dehydrated alcohol thorough washing, redispersion is in dehydrated alcohol.This dispersion liquid is filtered with filter 0.22 μ m nylon leaching film again, absolute ethanol washing, and in vacuum drying oven 30 ℃ dry 24 hours down, obtain the grapheme material of the 3-third amino ethoxy silane-functionalized.
(2) grapheme material of the 3-third amino ethoxy silane-functionalized strengthens the preparation of silica gel
The grapheme material of the 3-third amino ethoxy silane-functionalized that step (1) is obtained joins in the 3-third amino ethoxy silane, the dispersion concentration of the grapheme material of the 3-third amino ethoxy silane-functionalized in the 3-third amino ethoxy silane is 0.1mg/mL, add ethanol subsequently, secondary water and formic acid leave standstill hydrolysis, aminosilane and ethanol, the volume ratio of secondary water and formic acid is 50: 12: 16: 1, formic acid is that massfraction is 88.0%, then this colloidal sol is added in the mould and place processing 5 days down in 70 ℃ of environment, the grapheme material that obtains the 3-third amino ethoxy silane-functionalized strengthens silica gel.
Embodiment 8
Substitute the 3-third amino ethoxy silane with the 3-third amino methoxy silane, N-aminoethyl-3-aminopropyl trimethoxysilane, N-aminoethyl-3-aminopropyl methyl diethoxy silicon or N-aminoethyl-3-aminopropyl triethoxysilane, remaining is with embodiment 7.
Embodiment 9
(1) preparation of the grapheme material of the 3-third amino ethoxy silane-functionalized
Graphene oxide is joined in the 3-third amino ethoxy silane, the dispersion concentration of graphene oxide in the 3-third amino ethoxy silane is 1.0mg/mL, in 70 ℃ of following back flow reaction 24 hours, obtain the black even dispersion liquid, this black dispersion liquid is filtered with 0.22 μ m nylon leaching film, and with behind the dehydrated alcohol thorough washing, redispersion is in dehydrated alcohol.This dispersion liquid is filtered with filter 0.22 μ m nylon leaching film again, absolute ethanol washing, and in vacuum drying oven 30 ℃ dry 24 hours down, obtain the grapheme material of the 3-third amino ethoxy silane-functionalized.
(2) grapheme material of the 3-third amino ethoxy silane-functionalized strengthens the preparation of silica gel
The grapheme material of the 3-third amino ethoxy silane-functionalized that step (1) is obtained joins in the 3-third amino ethoxy silane, the dispersion concentration of the grapheme material of the 3-third amino ethoxy silane-functionalized in the 3-third amino ethoxy silane is 0.3mg/mL, add ethanol subsequently, secondary water and formic acid leave standstill hydrolysis, aminosilane and ethanol, the volume ratio of secondary water and formic acid is 50: 12: 16: 1, formic acid is that massfraction is 88.0%, then this colloidal sol is added in the mould and place processing 5 days down in 70 ℃ of environment, the grapheme material that obtains the 3-third amino ethoxy silane-functionalized strengthens silica gel.
Substitute the 3-third amino ethoxy silane with the 3-third amino methoxy silane, N-aminoethyl-3-aminopropyl trimethoxysilane, N-aminoethyl-3-aminopropyl methyl diethoxy silicon or N-aminoethyl-3-aminopropyl triethoxysilane, remaining is with embodiment 9.
Claims (11)
1. the grapheme material of an aminosilane functionalization strengthens the method for making of silica gel, it is characterized in that it may further comprise the steps:
(1) a kind of preparation of grapheme material of aminosilane functionalization
Graphene oxide is joined in the aminosilane, in 70 ℃ of following back flow reaction 24 hours, obtain the black even dispersion liquid, the dispersion concentration of graphene oxide in aminosilane is 0.1～1.0mg/mL, the black dispersion liquid that obtains is filtered with 0.22 μ m nylon leaching film, and with behind the dehydrated alcohol thorough washing, redispersion is in dehydrated alcohol, this dispersion liquid is filtered with filter 0.22 μ m nylon leaching film again, use absolute ethanol washing, and dry in vacuum drying oven, obtain the grapheme material of aminosilane functionalization;
Described aminosilane is that end group is-NH
2Silane, comprising: the 3-third amino ethoxy silane, the 3-third amino methoxy silane, N-aminoethyl-3-aminopropyl trimethoxysilane, N-aminoethyl-3-aminopropyl methyl diethoxy silicon and N-aminoethyl-3-aminopropyl triethoxysilane;
(2) a kind of grapheme material of aminosilane functionalization strengthens the preparation of silica gel
The grapheme material of aminosilane functionalization is joined in the aminosilane, the dispersion concentration of the grapheme material of aminosilane functionalization in aminosilane is 0.1～1.0mg/mL, add ethanol, secondary water and formic acid subsequently and leave standstill hydrolysis, the volume ratio of aminosilane and ethanol, secondary water and formic acid is 50: 12: 16: 1, then this colloidal sol is added in the mould and placed 5 days down, obtain the Graphene silica gel material of aminosilane functionalization in 70 ℃ of environment.
2. the grapheme material of a kind of aminosilane functionalization as claimed in claim 1 strengthens the method for making of silica gel, it is characterized in that, and is described:
(1) preparation of the grapheme material of the 3-third amino ethoxy silane-functionalized
Graphene oxide is joined in the 3-third amino ethoxy silane, and the dispersion concentration of graphene oxide in the 3-third amino ethoxy silane is 0.5mg/mL;
(2) grapheme material of the 3-third amino ethoxy silane-functionalized strengthens the preparation of silica gel
The grapheme material of the 3-third amino ethoxy silane-functionalized that step (1) is obtained joins in the 3-third amino ethoxy silane, and the dispersion concentration of the grapheme material of the 3-third amino ethoxy silane-functionalized in the 3-third amino ethoxy silane is 1.0mg/mL;
Remaining is with claim 1.
3. the grapheme material of a kind of aminosilane functionalization as claimed in claim 2 strengthens the method for making of silica gel, it is characterized in that, substitute the 3-third amino ethoxy silane with the 3-third amino methoxy silane, N-aminoethyl-3-aminopropyl trimethoxysilane, N-aminoethyl-3-aminopropyl methyl diethoxy silicon or N-aminoethyl-3-aminopropyl triethoxysilane, remaining is with claim 2.
4. the grapheme material of a kind of aminosilane functionalization as claimed in claim 1 strengthens the method for making of silica gel, it is characterized in that, and is described:
(1) preparation of the grapheme material of the 3-third amino ethoxy silane-functionalized
Graphene oxide is joined in the 3-third amino ethoxy silane, and the dispersion concentration of graphene oxide in the 3-third amino ethoxy silane is 0.1mg/mL;
(2) grapheme material of the 3-third amino ethoxy silane-functionalized strengthens the preparation of silica gel
The grapheme material of the 3-third amino ethoxy silane-functionalized that step (1) is obtained joins in the 3-third amino ethoxy silane, and the dispersion concentration of the grapheme material of the 3-third amino ethoxy silane-functionalized in the 3-third amino ethoxy silane is 0.8mg/mL;
Remaining is with claim 1.
5. the grapheme material of a kind of aminosilane functionalization as claimed in claim 4 strengthens the method for making of silica gel, it is characterized in that, substitute the 3-third amino ethoxy silane with the 3-third amino methoxy silane, N-aminoethyl-3-aminopropyl trimethoxysilane, N-aminoethyl-3-aminopropyl methyl diethoxy silicon or N-aminoethyl-3-aminopropyl triethoxysilane, remaining wants 4 with remaining with right.
6. the grapheme material of a kind of aminosilane functionalization as claimed in claim 1 strengthens the method for making of silica gel, it is characterized in that, and is described:
(1) preparation of the grapheme material of the 3-third amino ethoxy silane-functionalized
Graphene oxide is joined in the 3-third amino ethoxy silane, and the dispersion concentration of graphene oxide in the 3-third amino ethoxy silane is 0.3mg/mL;
(2) grapheme material of the 3-third amino ethoxy silane-functionalized strengthens the preparation of silica gel
The grapheme material of the 3-third amino ethoxy silane-functionalized that step (1) is obtained joins in the 3-third amino ethoxy silane, and the dispersion concentration of the grapheme material of the 3-third amino ethoxy silane-functionalized in the 3-third amino ethoxy silane is 0.6mg/mL;
Remaining is with claim 1.
7. the grapheme material of a kind of aminosilane functionalization as claimed in claim 6 strengthens the method for making of silica gel, it is characterized in that, substitute the 3-third amino ethoxy silane with the 3-third amino methoxy silane, N-aminoethyl-3-aminopropyl trimethoxysilane, N-aminoethyl-3-aminopropyl methyl diethoxy silicon or N-aminoethyl-3-aminopropyl triethoxysilane, remaining is with claim 6.
8. the grapheme material of a kind of aminosilane functionalization as claimed in claim 1 strengthens the method for making of silica gel, it is characterized in that, and is described:
(1) preparation of the grapheme material of the 3-third amino ethoxy silane-functionalized
Graphene oxide is joined in the 3-third amino ethoxy silane, and the dispersion concentration of graphene oxide in the 3-third amino ethoxy silane is 0.8mg/mL;
(2) grapheme material of the 3-third amino ethoxy silane-functionalized strengthens the preparation of silica gel
The grapheme material of the 3-third amino ethoxy silane-functionalized that step (1) is obtained joins in the 3-third amino ethoxy silane, and the dispersion concentration of the grapheme material of the 3-third amino ethoxy silane-functionalized in the 3-third amino ethoxy silane is 0.1mg/mL;
Remaining is with claim 1.
9. the grapheme material of a kind of aminosilane functionalization as claimed in claim 6 strengthens the method for making of silica gel, it is characterized in that, substitute the 3-third amino ethoxy silane with the 3-third amino methoxy silane, N-aminoethyl-3-aminopropyl trimethoxysilane, N-aminoethyl-3-aminopropyl methyl diethoxy silicon or N-aminoethyl-3-aminopropyl triethoxysilane; Remaining is with claim 8.
10. the grapheme material of a kind of aminosilane functionalization as claimed in claim 1 strengthens the method for making of silica gel, it is characterized in that, and is described:
(1) preparation of the grapheme material of the 3-third amino ethoxy silane-functionalized
Graphene oxide is joined in the 3-third amino ethoxy silane, and the dispersion concentration of graphene oxide in the 3-third amino ethoxy silane is 1.0mg/mL;
(2) grapheme material of the 3-third amino ethoxy silane-functionalized strengthens the preparation of silica gel
The grapheme material of the 3-third amino ethoxy silane-functionalized that step (1) is obtained joins in the 3-third amino ethoxy silane, and the dispersion concentration of the grapheme material of the 3-third amino ethoxy silane-functionalized in the 3-third amino ethoxy silane is 0.3mg/mL;
Remaining is with claim 1.
11. the grapheme material of a kind of aminosilane functionalization as claimed in claim 10 strengthens the method for making of silica gel, it is characterized in that, substitute the 3-third amino ethoxy silane with the 3-third amino methoxy silane, N-aminoethyl-3-aminopropyl trimethoxysilane, N-aminoethyl-3-aminopropyl methyl diethoxy silicon or N-aminoethyl-3-aminopropyl triethoxysilane, remaining is with claim 10.
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| CN102634212A (en) * | 2012-04-23 | 2012-08-15 | 钱新明 | Heat conductive silicone grease composition |
| CN102642830A (en) * | 2012-04-25 | 2012-08-22 | 南京大学 | Method for preparing graphene modified by silane coupling agent |
| CN102701191A (en) * | 2012-06-06 | 2012-10-03 | 渤海大学 | Preparation method of fluorosilane surface finished grapheme for supercapacitor |
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| CN107603153A (en) * | 2017-09-18 | 2018-01-19 | 北京市射线应用研究中心 | A kind of graphene/epoxy resin neutron shielding material and preparation method and application |
| CN107603153B (en) * | 2017-09-18 | 2020-05-26 | 北京市射线应用研究中心 | Graphene/epoxy resin neutron shielding material and preparation method and application thereof |
| CN108503890A (en) * | 2018-04-12 | 2018-09-07 | 中国科学院理化技术研究所 | Preparation method of organic silicon functionalized boron nitride nanosheet |
| CN109082123A (en) * | 2018-06-28 | 2018-12-25 | 上海电缆研究所有限公司 | Modified electromagnetic shielding silastic material of graphene and preparation method thereof |
| CN110172157A (en) * | 2018-08-01 | 2019-08-27 | 江苏华夏制漆科技有限公司 | A kind of modified organic silicone resin and its preparation method and application |
| CN109897512A (en) * | 2019-03-27 | 2019-06-18 | 浙江中科应化科技有限公司 | A kind of modified polyurea coating |
| CN109897512B (en) * | 2019-03-27 | 2021-03-23 | 浙江中科应化科技有限公司 | Modified polyurea coating |
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