CN108424622A - A kind of modified graphene oxide/epoxy resin composite material and its preparation method and application - Google Patents
A kind of modified graphene oxide/epoxy resin composite material and its preparation method and application Download PDFInfo
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- CN108424622A CN108424622A CN201810381411.8A CN201810381411A CN108424622A CN 108424622 A CN108424622 A CN 108424622A CN 201810381411 A CN201810381411 A CN 201810381411A CN 108424622 A CN108424622 A CN 108424622A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention provides a kind of modified graphene oxide/epoxy resin composite materials and its preparation method and application.Modified graphene oxide/epoxy resin composite material provided by the invention is prepared in terms of mass parts by the raw material including following components：1~10 part of modified graphene oxide dispersion pulp, 20~80 parts of epoxy resin, 5~10 parts of filler, 1~6 part of toughener, 0.2~3 part of accelerating agent, 60~90 parts of curing agent；The modified graphene oxide dispersion pulp includes modified graphene oxide, dispersant and epoxy resin；The modified graphene oxide is modified to obtain by graphene oxide；Modification modifying agent includes 3 aminopropyl triethoxysilanes, ethyl orthosilicate, p-phenylenediamine or γ aminopropyl triethoxysilanes.The conductivity of modified graphene oxide/epoxy resin composite material provided by the invention is 5.6x1014~3.1x1015Ω·cm。
Description
Technical field
The present invention relates to polymeric material fields, and in particular to a kind of modified graphene oxide/epoxy resin composite material
And its preparation method and application.
Background technology
Dissimilar metal corrodes ductwork building system frequent occurrence in seawer system with high salt, causes pipe perforation corrosion broken
Ring.Dissimilar metal corrosion refers to that the electrode potential of dissimilar metals material in liquid medium is different, and then forms primary battery
The galvanic corrosion occurred.
Dissimilar metal corrosion protection method mainly takes high value electrically insulating material gasket to completely cut off dissimilar metal, drop at present
Low metal corrosion rate.Usually used insulation spacer is mainly by the fibre reinforced materials such as epoxide-resin glue and asbestos, glass cloth
It is made.But the insulation spacer insulating properties made from above-mentioned material is undesirable, resistivity is relatively low, can not function well as absolutely
The effect of edge.
Invention content
The present invention provides a kind of modified graphene oxide/epoxy resin composite materials and its preparation method and application, originally
Modified graphene oxide/epoxy resin composite material the good insulating provided, volume resistivity 5.6x10 are provided14~
3.1x1015Ω·cm。
To achieve the goals above, the present invention provides following technical schemes：
The present invention provides a kind of modified graphene oxide/epoxy resin composite materials, by the original for including following mass parts
Material is prepared：
The modified graphene oxide dispersion pulp includes modified graphene oxide, dispersant and epoxy resin；
The modified graphene oxide is modified to obtain by graphene oxide；The modification modifying agent includes 3- aminopropyls three
Ethoxysilane, ethyl orthosilicate, p-phenylenediamine or gamma-aminopropyl-triethoxy-silane.
Preferably, in the modified graphene oxide dispersion pulp, with 0.01~0.1 mass parts of the modified graphene oxide
Meter, the dispersant are 30~40 parts, and the epoxy resin is 60~70 parts.
Preferably, the dispersant includes one or more in dimethylbenzene, n-butanol and cyclohexanone.
Preferably, the epoxy resin is one or both of bisphenol A type epoxy resin, bisphenol f type epoxy resin.
Preferably, the curing agent be methyl tetrahydro phthalic anhydride, phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyl hexahydrophthalic anhydride and
It is one or more in methyl Na Dike acid anhydrides.
Preferably, the filler is one or more in silica, alundum (Al2O3), aluminium hydroxide and talcum powder.
Preferably, the toughener is hydroxy'terminated butadiene nitrile rubber, polyether lateral chain type epoxy resin and polyurethane-epoxy resin
In it is one or more.
Preferably, the accelerating agent is DMP-30 or BDMA.
The present invention also provides the preparation sides of modified graphene oxide/epoxy resin composite material described in above-mentioned technical proposal
Method includes the following steps：
(1) the modified graphene oxide dispersion pulp, epoxy resin, filler, toughener and accelerating agent are mixed, is answered
Close slurry；
(2) it is heated after mixing composite mortar and curing agent that the step (1) is prepared, obtains modified graphite oxide
Alkene/epoxy resin composite material；The temperature of the heating is 80~120 DEG C.
The present invention also provides modified graphene oxide/epoxy resin composite materials described in above-mentioned technical proposal or above-mentioned
Modified graphene oxide/epoxy resin composite material answering as insulation spacer that preparation method described in technical solution is prepared
With.
Preferably, the insulation spacer is for completely cutting off dissimilar metal.
The present invention provides a kind of modified graphene oxide/epoxy resin composite materials, by the original for including following mass parts
Material is prepared：1~10 part of modified graphene oxide dispersion pulp, 20~80 parts of epoxy resin, 5~10 parts of filler, toughener 1~
60~90 parts of 6 parts, 0.2~3 part of accelerating agent and curing agent；The modified graphene oxide dispersion pulp includes modified graphite oxide
Alkene, dispersant and epoxy resin；The modified graphene oxide is modified to obtain by graphene oxide；Modification modifying agent packet
Include 3- aminopropyl triethoxysilanes, ethyl orthosilicate, p-phenylenediamine or gamma-aminopropyl-triethoxy-silane.The present invention is to change
Property graphene oxide be raw material, the preferable insulation performance of one side graphene oxide is conducive to that changing for good insulating is prepared
Property graphene oxide/epoxy resin composite material；Another aspect modified graphene oxide surface have hydroxyl, carboxyl, amino and
One or more of silylation so that modified graphene oxide has preferably dispersibility, to be conducive to be prepared absolutely
Good modified graphene oxide/the epoxy resin composite material of edge.
The present invention also provides the preparation method of modified graphene oxide/epoxy resin composite material, the present invention will be modified
Graphene oxide dispersion pulp cures after being mixed with other raw materials, rather than directly mixes modified graphene oxide and other raw materials
Close, be conducive to keep modified graphene oxide fully dispersed, to be conducive to improve finally be prepared modified graphene oxide/
The insulation performance of epoxy resin composite material.By embodiment result it is found that modified graphene oxide/asphalt mixtures modified by epoxy resin provided by the invention
The volume resistivity of resin composite material is 5.6x1014~3.1x1015Ω·cm。
Specific implementation mode
The present invention provides a kind of modified graphene oxide/epoxy resin composite materials, by the original for including following mass parts
Material is prepared：
The modified graphene oxide dispersion pulp includes modified graphene oxide, dispersant and epoxy resin；The modification
Graphene oxide is modified to obtain by graphene oxide；The modification modifying agent includes 3- aminopropyl triethoxysilanes, positive silicon
Acetoacetic ester, p-phenylenediamine or gamma-aminopropyl-triethoxy-silane.
Raw material of the present invention is commercial goods unless otherwise specified.
The raw material for preparing of modified graphene oxide/epoxy resin composite material provided by the invention includes 1~10 part of modification
Graphene oxide dispersion pulp, preferably 2~8 parts, further preferably 4~6 parts.
In the present invention, the modified graphene oxide dispersion pulp includes modified graphene oxide, dispersant and asphalt mixtures modified by epoxy resin
Fat.In the present invention, the modified graphene oxide dispersion pulp fineness preferably≤50 μm, further preferably≤45 μm.This hair
It is bright preferably to control the fineness of modified graphene oxide dispersion pulp within the above range, be conducive to that modified graphene oxide is made to disperse
Slurry can be evenly dispersed in modified graphene oxide/epoxy resin composite material.
In the present invention, in the modified graphene oxide dispersion pulp, with 0.01~0.1 matter of the modified graphene oxide
Part meter is measured, the dispersant is preferably 30~40 parts, and the epoxy resin is preferably 60~70 parts.
In the present invention, in terms of mass parts, the modified graphene oxide dispersion pulp preferably includes 0.01~0.1 part of modification
Graphene oxide, further preferably 0.02~0.08 part, more preferably 0.04~0.06 part.In the present invention, the modification
Graphene oxide is modified to obtain by graphene oxide；The modification with modifying agent preferably include 3- aminopropyl triethoxysilanes,
Ethyl orthosilicate, p-phenylenediamine or gamma-aminopropyl-triethoxy-silane.The present invention is not special to the specific method of the modification
Limitation, using the common method of modifying of those skilled in the art.The present invention is using modified graphene oxide as raw material, due to changing
Property surface of graphene oxide have one or more of a large amount of hydroxyl, carboxyl, amino and silylation so that itself have preferable
The modified graphene oxide of insulation performance can be well dispersed in modified graphene oxide/epoxy resin composite material, be made
Modified graphene oxide plays obstruction epoxy resin in the modified graphene oxide/epoxy resin composite material being finally prepared
The effect of middle micropore is conducive to the electrical insulation capability for improving composite material.
On the basis of the mass parts of the modified graphene oxide, modified graphene oxide dispersion pulp of the present invention is preferred
Including 30~40 parts of dispersants, further preferably 32~38 parts, more preferably 34~36 parts.In the present invention, the dispersion
Agent preferably includes one or more in dimethylbenzene, n-butanol and cyclohexanone.When the dispersant be preferably toluene, n-butanol and
When two or three in cyclohexanone, the dosage of selected specific substance is not particularly limited in the present invention, only need to be total by dispersant
Amount control is within the above range.The present invention is conducive to keep modified graphene oxide abundant under the action of the dispersant
It is dispersed in modified graphene oxide/epoxy resin composite material, to be conducive to improve modified graphene oxide/epoxy resin
The insulation performance of composite material.
On the basis of the mass fraction of the modified graphene oxide, modified graphene oxide dispersion pulp of the present invention is excellent
Choosing includes 60~70 parts of epoxy resin, further preferably 62~68 parts, more preferably 64~66 parts.In the present invention, described
Epoxy resin is preferably one or both of bisphenol A type epoxy resin, bisphenol f type epoxy resin.When the epoxy resin is excellent
When being selected as the one or two of bisphenol A type epoxy resin, bisphenol f type epoxy resin, dosage of the present invention to selected specific substance
It is not particularly limited, it only need to be by epoxy resin overall control within the above range.In the present invention, the epoxy resin from
Body has insulating properties, and being conducive to the composite material for making to be prepared has preferable insulation performance.
Part epoxy is first prepared into modified graphene oxide slurry by the present invention, then is mixed with again with epoxy resin
Condensation material, it is larger to efficiently solve epoxy resin viscosity, the problem of being unfavorable for disperse modified graphene oxide.It is provided by the invention
It is compound that method can make modified graphene oxide be evenly dispersed in the modified graphene oxide/epoxy resin being finally prepared
In material, the insulation performance of modified graphene oxide/epoxy resin composite material is effectively increased.
In the present invention, the preparation method of the modified graphene oxide dispersion pulp preferably includes：By the graphite oxide
It is ground after alkene, dispersant and epoxy resin mixing, obtains modified graphene oxide dispersion pulp.
The hybrid mode of the graphene oxide, dispersant and epoxy resin is not particularly limited in the present invention, using this
Hybrid mode known to field technology personnel.
After the mixing of the modified graphene oxide, dispersant and epoxy resin, mixture that the present invention will preferably obtain
It is ground, obtains modified graphene oxide dispersion pulp.Present invention preferably employs the modes of grinding by modified graphene oxide, divides
Powder and epoxy resin mixing.The present invention is further preferably ground mixture using high speed dispersor.The present invention passes through
Grinding makes fineness≤50 μm of modified graphene oxide dispersion pulp, effectively increases modified graphene oxide dispersion pulp in modified oxygen
Dispersion effect in graphite alkene/epoxy resin composite material.
The present invention is using modified graphene oxide dispersion pulp as the preparation of modified graphene oxide/epoxy resin composite material
Raw material avoids being conducive to modified epoxy graphene directly as raw material is prepared to improve modified graphene oxide modified oxidized
Dispersion effect in graphene/epoxy resin composite material, it is compound to be conducive to raising modified graphene oxide/epoxy resin
The insulation performance of material.
On the basis of the mass parts of the modified graphene oxide dispersion pulp, modified graphene oxide provided by the invention/
The raw material for preparing of epoxy resin composite material includes 20~80 parts of epoxy resin, preferably 30~70 parts, further preferably 40
~60 parts, more preferably 45~55 parts.In the present invention, the epoxy resin is preferably bisphenol A type epoxy resin, bisphenol-f type
One or both of epoxy resin.When the epoxy resin is preferably bisphenol A type epoxy resin, bisphenol f type epoxy resin
When one or two kinds of, the dosage of selected specific substance is not particularly limited in the present invention, and only epoxy resin overall control need to exist
In above range.In the present invention, the epoxy resin itself has insulating properties, is conducive to the composite wood for making to be prepared
Material has preferable insulation performance so that modified graphene oxide/epoxy resin composite material that the present invention is prepared has
The advantages of seawater corrosion resistance.
On the basis of the mass fraction of modified graphene oxide dispersion pulp, modified graphene oxide/ring provided by the invention
The raw material for preparing of epoxy resin composite material includes 5~10 parts of fillers, preferably 6~9 parts, further preferably 7~8 parts.At this
In invention, the filler is preferably one or more in silica, alundum (Al2O3), aluminium hydroxide and talcum powder.Work as institute
When stating filler and being preferably two kinds, three kinds or four kinds of silica, alundum (Al2O3), aluminium hydroxide and talcum powder, the present invention couple
The dosage of selected specific substance is not particularly limited, only need to be by filler overall control within the above range.
In the present invention, on the basis of the mass fraction of modified graphene oxide dispersion pulp, modified oxygen provided by the invention
Graphite alkene/epoxy resin composite material prepare raw material include 1~6 part of toughener, preferably 2~5 parts, further preferably
3~4 parts.In the present invention, the toughener is preferably hydroxy'terminated butadiene nitrile rubber, polyethers, side chain type epoxy resin and polyurethane
It is one or more in epoxy resin.When the toughener be preferably hydroxy'terminated butadiene nitrile rubber, polyethers, side chain type epoxy resin and
At two kinds, three kinds or four kinds of polyurethane-epoxy resin, the dosage of selected specific substance is not particularly limited in the present invention, only needs
Within the above range by toughener overall control.
On the basis of the mass fraction of modified graphene oxide dispersion pulp, modified graphene oxide/ring provided by the invention
Epoxy resin composite material prepare raw material include 0.2~3 part of accelerating agent, preferably 0.5~2.5 part, further preferably 1.0~
2.0 part.
On the basis of the mass fraction of modified graphene oxide dispersion pulp, modified graphene oxide/ring provided by the invention
The raw material for preparing of epoxy resin composite material includes 65~85 parts of curing agent, preferably 65~85 parts, further preferably 70~80
Part, more preferably 72~78 parts, be still more preferably 74~76 parts.In the present invention, the curing agent is preferably methyl four
It is one or more in hydrogen phthalic anhydride, phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyl hexahydrophthalic anhydride and methyl Na Dike acid anhydrides.Work as institute
It is preferably methyl tetrahydro phthalic anhydride, phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyl hexahydrophthalic anhydride and methyl Na Dike acid to state curing agent
When two or more in acid anhydride, the specific dosage of the substance is not particularly limited in the present invention, only need to be by the total amount of curing agent
Control is within the above range.
The present invention provides the preparation sides of modified graphene oxide/epoxy resin composite material described in above-mentioned technical proposal
Method includes the following steps：
(1) the modified graphene oxide dispersion pulp, epoxy resin, filler, toughener and accelerating agent are mixed, is answered
Close slurry；
(2) it is heated after mixing composite mortar and curing agent that the step (1) is prepared, obtains modified graphite oxide
Alkene/epoxy resin composite material；The temperature of the heating is 80~120 DEG C.
The present invention mixes the modified graphene oxide dispersion pulp, epoxy resin, filler, toughener and accelerating agent, obtains
To composite mortar.
In the present invention, the mode of the mixing, which is preferably followed successively by, is stirred and is ultrasonically treated.The present invention is preferred first to exist
The modified graphene oxide dispersion pulp, epoxy resin, filler, toughener and accelerating agent are mixed under stirring condition, then again
Modified graphene oxide dispersion pulp, epoxy resin, filler, toughener and accelerating agent is set more fully to mix by being ultrasonically treated
It closes.In the present invention, the rotating speed being stirred is preferably 500~1500r/min, further preferably 800~1200r/
min；The time being stirred is preferably 0.5~2.0h.In the present invention, the power of the supersound process be preferably 600~
1000W, further preferably 700~900W；The time of the supersound process is preferably 60~180min, further preferably
100~150min.
After the mixing, the present invention is preferably filtered mixture, and it is the uniform composite pulp of particle size dispersion to take the lower object of filter
Material.In the present invention, the mesh number of filtering strainer is preferably 500 mesh.The mode of filtering is not particularly limited in the present invention,
Using filter type well-known to those skilled in the art.
After obtaining composite mortar, the present invention heats after mixing the composite mortar and curing agent, obtains modified oxidized stone
Black alkene/epoxy resin composite material.
The present invention mixes the composite mortar and curing agent, obtains mixed liquor.The present invention is to composite mortar and solidification
The mode of agent mixing is not particularly limited, using hybrid mode well-known to those skilled in the art.
After obtaining mixed liquor, the present invention heats the mixed liquor, obtains modified graphene oxide/asphalt mixtures modified by epoxy resin
Resin composite material.In the present invention, the temperature of the heating be 80~120 DEG C, preferably 90~110 DEG C, more preferably 95~
105℃；The time of the heating is preferably 8~10h.In the present invention, the heating preferably include to carry out successively first plus
The temperature of heat and the second heating, first heating is preferably 80~90 DEG C, further preferably 80~85 DEG C；Described first adds
The time of heat is preferably 4~5h, further preferably 4~4.5h；The temperature of second heating is preferably 110~120 DEG C, into
One step is preferably 115~120 DEG C, and the time of second heating is preferably 4~5h, further preferably 4.5~5h.
The present invention also provides modified graphene oxide/epoxy resin composite materials described in above-mentioned technical proposal or above-mentioned
Application of the modified graphene oxide/epoxy resin composite material that technical solution the method is prepared as insulation spacer.
The present invention will preferably pour into a mould after the heating of the modified graphene oxide/epoxy resin composite material and molding at
Reason, obtains solid modified graphene oxide/epoxy resin composite material；With the solid modified graphene oxide/epoxy
Resin composite materials are as insulation spacer.The present invention does not have special want to the specific implementation mode of the cast and forming processes
It asks, is carried out using the preparation method of insulation spacer well-known to those skilled in the art.
In the present invention, the insulation spacer is preferred for completely cutting off dissimilar metal.In the present invention, the insulation spacer is excellent
It is selected to the insulation of dissimilar metal in ductwork building system；Application of the present invention to the insulation spacer in dissimilar metal isolation
Mode does not have particular/special requirement, using well-known to those skilled in the art.
Technical scheme of the present invention is described in detail with reference to embodiment, but they cannot be interpreted as pair
The restriction of the scope of the present invention.
Embodiment 1
Example uses 0.02 part of modified graphene oxide, 30 parts of n-butanols and 70 parts of bisphenol A type epoxy resins in mass ratio
High speed dispersor is ground to fineness and is less than or equal to 50 microns, obtains modified graphene oxide dispersion pulp.
Then example in mass ratio is by 2 parts of modified graphene oxide dispersion pulp, 5 parts of silica, 4 parts of toughener, accelerating agent
0.5 part mixes with 80 parts of bisphenol A type epoxy resins, stirs 40 minutes at rotating speed 600rpm, then re-ultrasonic dispersion 60 minutes,
500 mesh filter screens of the coating prepared are filtered, the composite mortar of uniform dispersion is obtained；By composite mortar and 70 parts of methyl tetrahydrochysenes
Phthalic anhydride curing agent is mixed evenly, and heats 4 hours at 80 DEG C in a kettle, then heats to 120 DEG C, reheats 4 hours,
Modified graphene oxide/epoxy resin composite material is obtained, then through pouring into a mould compression molding, insulation spacer is made.
Embodiment 2
Example uses 0.01 part of modified graphene oxide, 30 parts of dimethylbenzene and 60 parts of bisphenol f type epoxy resins in mass ratio
High speed dispersor is ground to fineness and is less than or equal to 50 microns, obtains modified graphene oxide dispersion pulp.Then example will in mass ratio
1 part of modified graphene oxide dispersion pulp, 5 parts of alundum (Al2O3), 1 part of toughener, 1 part of accelerating agent and 30 parts of bisphenol F type epoxy trees
Fat mixes, and is stirred at rotating speed 600rpm 40 minutes, then re-ultrasonic dispersion 60 minutes, 500 mesh of the coating prepared are filtered
Net filtration obtains the composite mortar of uniform dispersion；Composite mortar and 60 parts of curing agent are mixed evenly, in a kettle 85
It is heated 4 hours at DEG C, then heats to 115 DEG C, reheated 4 hours, then through pouring into a mould compression molding, obtain modified graphite oxide
Insulation spacer is made in alkene/epoxy resin composite material.
Embodiment 3
Example uses 0.1 part of modified graphene oxide, 40 parts of n-butanols and 70 parts of bisphenol f type epoxy resins in mass ratio
High speed dispersor is ground to fineness and is less than or equal to 50 microns, obtains modified graphene oxide dispersion pulp.Then example will in mass ratio
10 parts of modified graphene oxide dispersion pulp, 10 parts of aluminium hydroxide, 6 parts of toughener, 3 parts of accelerating agent and 60 parts of bisphenol F type epoxy trees
Fat mixes, and is stirred at rotating speed 600rpm 40 minutes, then re-ultrasonic dispersion 60 minutes, 500 mesh of the coating prepared are filtered
Net filtration obtains the composite mortar of uniform dispersion；Composite mortar and 90 parts of curing agent are mixed evenly, in a kettle 85
It is heated 4 hours at DEG C, then heats to 115 DEG C, reheated 4 hours, then through pouring into a mould compression molding, obtain modified graphite oxide
Insulation spacer is made in alkene/epoxy resin composite material.
Embodiment 4
Example in mass ratio by 0.05 part of modified graphene oxide, 35 parts of cyclohexanone and 65 parts of acrylic modified epoxy resins,
It is ground to fineness using high speed dispersor and is less than or equal to 50 microns, obtains modified graphene oxide dispersion pulp.Then in mass ratio
Example is by 5 parts of modified graphene oxide dispersion pulp, 8 parts of aluminium hydroxide, 5 parts of toughener, 2 parts of accelerating agent and 60 parts of bisphenol F type epoxies
Resin mixes, and stirs 40 minutes at rotating speed 600rpm, then re-ultrasonic dispersion 60 minutes, by 500 mesh of the coating prepared
Strainer filtering obtains the composite mortar of uniform dispersion；Composite mortar and 80 parts of curing agent are mixed evenly, in a kettle
It is heated 4 hours at 85 DEG C, then heats to 115 DEG C, reheated 4 hours, then through pouring into a mould compression molding, obtain modified graphite oxide
Insulation spacer is made in alkene/epoxy resin composite material.
The resistivity for modified graphene oxide/epoxy resin composite material that Examples 1 to 4 is prepared is surveyed
Examination.Test result is as shown in table 1.Test method is GB/T10064-2006.
The resistivity for modified graphene oxide/epoxy resin composite material that 1 Examples 1 to 4 of table is prepared
By 1 test result of table it is found that modified graphene oxide/epoxy resin composite material provided by the invention has preferably
Insulation performance, volume resistivity 5.6x1014~3.1x1015Ω.cm。
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of modified graphene oxide/epoxy resin composite material, is prepared by the raw material including following mass parts：
The modified graphene oxide dispersion pulp includes modified graphene oxide, dispersant and epoxy resin；
The modified graphene oxide is modified to obtain by graphene oxide；The modification modifying agent includes three ethoxy of 3- aminopropyls
Base silane, ethyl orthosilicate, p-phenylenediamine or gamma-aminopropyl-triethoxy-silane.
2. modified graphene oxide/epoxy resin composite material according to claim 1, which is characterized in that the modification
In graphene oxide dispersion pulp, in terms of 0.01~0.1 mass parts of the modified graphene oxide, the dispersant is 30~40
Part, the epoxy resin is 60~70 parts.
3. modified graphene oxide/epoxy resin composite material according to claim 1 or 2, which is characterized in that described point
Powder includes one or more in dimethylbenzene, n-butanol and cyclohexanone.
4. modified graphene oxide/epoxy resin composite material according to claim 1, which is characterized in that the epoxy
Resin is one or both of bisphenol A type epoxy resin, bisphenol f type epoxy resin.
5. modified graphene oxide/epoxy resin composite material according to claim 1 or 4, which is characterized in that described solid
Agent is one in methyl tetrahydro phthalic anhydride, phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyl hexahydrophthalic anhydride and methyl Na Dike acid anhydrides
Kind is a variety of.
6. modified graphene oxide/epoxy resin composite material according to claim 1, which is characterized in that the filler
It is one or more in silica, alundum (Al2O3), aluminium hydroxide and talcum powder.
7. modified graphene oxide/epoxy resin composite material according to claim 1, which is characterized in that the toughening
Agent is one or more in hydroxy'terminated butadiene nitrile rubber, polyethers, side chain type epoxy resin and polyurethane-epoxy resin；The promotion
Agent is DMP-30 or BDMA.
8. the preparation method of any one of the claim 1~7 modified graphene oxide/epoxy resin composite material, including with
Lower step：
(1) the modified graphene oxide dispersion pulp, epoxy resin, filler, toughener and accelerating agent are mixed, obtains composite pulp
Material；
(2) heated after mixing composite mortar and curing agent that the step (1) is prepared, obtain modified graphene oxide/
Epoxy resin composite material；The temperature of the heating is 80~120 DEG C.
9. described in any one of the claim 1~7 modified graphene oxide/epoxy resin composite material or claim 8
Application of the modified graphene oxide/epoxy resin composite material that preparation method is prepared as insulation spacer.
10. application according to claim 9, which is characterized in that the insulation spacer is for completely cutting off dissimilar metal.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111763406A (en) * | 2020-08-05 | 2020-10-13 | 兰州交通大学 | Preparation process of graphene nanocomposite |
| CN112980217A (en) * | 2021-02-21 | 2021-06-18 | 安徽理工大学 | Modified GO-SiO2Preparation method of composite filler and application of composite filler in rubber |
| CN113308693A (en) * | 2021-04-30 | 2021-08-27 | 江苏龙山管件有限公司 | High-strength corrosion-resistant stainless steel pipe fitting and machining process thereof |
| CN113844128A (en) * | 2021-09-09 | 2021-12-28 | 江苏耀鸿电子有限公司 | Lead-free high-heat-resistance copper-clad plate and preparation method thereof |
| CN115678409A (en) * | 2022-11-22 | 2023-02-03 | 广东电网有限责任公司 | Anticorrosive antifouling antistatic coating and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109867830A (en) * | 2019-01-16 | 2019-06-11 | 中国石油天然气股份有限公司 | Ageing-resistant nitrile rubber/o-phenylenediamine modified graphene oxide composite material |
| CN111763406A (en) * | 2020-08-05 | 2020-10-13 | 兰州交通大学 | Preparation process of graphene nanocomposite |
| CN112980217A (en) * | 2021-02-21 | 2021-06-18 | 安徽理工大学 | Modified GO-SiO2Preparation method of composite filler and application of composite filler in rubber |
| CN112980217B (en) * | 2021-02-21 | 2023-10-24 | 安徽理工大学 | Modified GO-SiO 2 Preparation method of composite filler and application of composite filler in rubber |
| CN113308693A (en) * | 2021-04-30 | 2021-08-27 | 江苏龙山管件有限公司 | High-strength corrosion-resistant stainless steel pipe fitting and machining process thereof |
| CN113308693B (en) * | 2021-04-30 | 2023-02-28 | 江苏龙山管件有限公司 | High-strength corrosion-resistant stainless steel pipe fitting and machining process thereof |
| CN113844128A (en) * | 2021-09-09 | 2021-12-28 | 江苏耀鸿电子有限公司 | Lead-free high-heat-resistance copper-clad plate and preparation method thereof |
| CN113844128B (en) * | 2021-09-09 | 2022-10-21 | 江苏耀鸿电子有限公司 | Lead-free high-heat-resistance copper-clad plate and preparation method thereof |
| CN115678409A (en) * | 2022-11-22 | 2023-02-03 | 广东电网有限责任公司 | Anticorrosive antifouling antistatic coating and preparation method thereof |
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