CN108892134A - A kind of preparation method of composite graphite alkene Electric radiant Heating Film - Google Patents

A kind of preparation method of composite graphite alkene Electric radiant Heating Film Download PDF

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Publication number
CN108892134A
CN108892134A CN201810868281.0A CN201810868281A CN108892134A CN 108892134 A CN108892134 A CN 108892134A CN 201810868281 A CN201810868281 A CN 201810868281A CN 108892134 A CN108892134 A CN 108892134A
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graphene oxide
graphene
preparation
film
solution
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刘丰军
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Qingdao Yae Woo Industry & Trade Co Ltd
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Qingdao Yae Woo Industry & Trade Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof
    • C01B32/15Nano-sized carbon materials
    • C01B32/182Graphene
    • C01B32/198Graphene oxide
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof
    • C01B32/15Nano-sized carbon materials
    • C01B32/182Graphene
    • C01B32/184Preparation
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/10Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/145Carbon only, e.g. carbon black, graphite
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/20Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs

Abstract

The invention discloses a kind of preparation methods of composite graphite alkene Electric radiant Heating Film, and the preparation method comprises the following steps:The first step prepares graphene oxide solution using improved Hummers method, and is washed to neutrality;Second step is frozen and dried;Third step, the preparation of graphene oxide dispersion;4th step, coating, plastic;5th step, is prepared graphene composite thin film;6th step, the reduction of graphene composite thin film obtain composite graphite alkene Electric radiant Heating Film;The preparation method of composite graphite alkene Electric radiant Heating Film of the invention, the combined oxidation graphene film prepared using the preparation method of composite graphite alkene Electric radiant Heating Film of the invention is after hydroiodic acid reduction, composite graphite alkene Electric radiant Heating Film is obtained after calendering technology, it is with good thermal conductivity and electric conductivity, and it is easy to operate, low in cost, energy consumption is smaller.

Description

A kind of preparation method of composite graphite alkene Electric radiant Heating Film
Technical field
The present invention relates to a kind of preparation methods of composite graphite alkene Electric radiant Heating Film, belong to thermo electric material field.
Background technique
Electrical resistor heating element in common electric heating system generally uses metal foil, film coating, resistance wire, metal mesh etc. Material;Most commonly used heating element is nichrome;However, still seeming in the following areas at present not for nichrome Foot:The density of nichrome is greater than 8g/cm3, thickness has several millimeters when use;Resistivity low (~ 10–6Ω/m), however it remains Electric heating conversion efficiency is low, and the rate of heat addition is small, and heating element does not have automatic constant-temperature and power compensation function, so that electric heating system structure In place of the deficiencies of complexity, thermal inertia is big;Ferrum-chromium-aluminum is Alfer, and there are cold-shortnesses, 475 DEG C of brittleness and 1000 DEG C or more High-temperature brittleness, the elevated temperature strength as caused by high-temperature brittleness is low, and to eventually lead to heating element service life short;Alloy it is solderable Property it is very poor, hardly possible repair;Graphene(Graphene)Be one kind by carbon atom with sp2It is in honeycomb lattice that hybridized orbit, which forms hexangle type, (honeycomb crystal lattice)The single layer flat film being arranged to make up, the two-dimentional material of only one carbon atom thickness Material;The excellent electrical and thermal conductivity performance of graphene is well beyond metal, while graphene has the advantages that corrosion-and high-temp-resistant, and its Good mechanical performance and lower density more allow it to have the potentiality in thermo electric material field substituted metal;Due to graphene Large-scale processing is increasingly becoming reality, and graphene film applies substituted metal material in different fields.Chinese Patent Application No.: 201610690049.3 disclosing a kind of preparation method of composite graphite alkene Electric radiant Heating Film, this method comprises the following steps:(1)Preparation Graphene oxide solution is mixed in reaction by 250g natural graphite and by the 5L nitration mixture that the 4.5L concentrated sulfuric acid and 0.5L concentrated phosphoric acid form It is in kettle and uniform with automatically controlled magnetic stirrer, 500g potassium permanganate is slowly added in the case where being lower than 20 DEG C;Later, close Envelope reaction kettle is simultaneously warming up to 85-90 DEG C of reaction 2-3 hours, and product is taken out from reaction kettle lower end, 40L solution is diluted to, is added 0.6L hydrogen peroxide obtains glassy yellow graphite oxide solution;Then, it is washed with acid and water alternating centrifugal, until pH value of solution=5-6, goes to clean Matter ion;Finally, ultrasonic disperse graphite oxide, configures graphene oxide solution;(2)The above-mentioned oxygen for being 5-15mg/mL by concentration Graphite aqueous solution stops in solidification liquid or liquid nitrogen after continuously and smoothly's extrusion in the preparation facilities exported with linear type 10-100 seconds, it is frozen into graphene oxide gel film, graphene oxide gel film is put into -10 ~ -15 DEG C of refrigerator and freezes 2- It is rapidly frozen in 5h or liquid nitrogen;(3)Graphite oxide aerogel film after jelly is handled is sent into high temperature furnace and carries out high warm Processing, processing mode are:400 DEG C first are warming up to 2-3 DEG C/min under atmosphere of inert gases, 0.5-1h is kept the temperature, then lazy Property atmosphere under with 2-4 DEG C/min be warming up to 1300 DEG C, 1-4h is kept the temperature, then with 2-4 DEG C/min under atmosphere of inert gases 3000 DEG C are warming up to, 1-2h is kept the temperature, can be obtained the pure graphene aerogel film of continuous ultralight rule orientating;By aerogel film High pressure compacting after, pressure 20-50MPa obtains composite graphite alkene Electric radiant Heating Film, using the above method can it is pollution-free, be able to batch Production prepares graphene, and graphene film has fine toughness, can arbitrarily bend and keep good electric conductivity, have high Machinability is conducive to the various shape adapted to, the demand of various applications.But the preparation side of above-mentioned composite graphite alkene Electric radiant Heating Film Its step of method(3)In the reduction of graphite oxide aerogel film in, need under the protection of inert gas, by high temperature by oxygen The reduction of graphite alkene, although this method can complete restoring operation, whole operation carries out comparatively laborious, high temperature furnace Heating need the regular hour, and whole process needs the protection of inert gas, in addition reduction the time it takes, not only Time-consuming, and higher cost;Therefore, in order to solve problem above, it would be highly desirable to study a kind of system of new composite graphite alkene Electric radiant Heating Film Preparation Method.
Summary of the invention
To solve the above problems, the invention proposes a kind of preparation method of composite graphite alkene Electric radiant Heating Film, it is easy to operate, at This is cheap, and energy consumption is smaller.
The preparation method of composite graphite alkene Electric radiant Heating Film of the invention, the preparation method comprises the following steps:
The first step prepares graphene oxide solution using improved Hummers method, and is washed to neutrality;
1)0.5g sodium nitrate powder and the concentrated sulfuric acid of 70ml are weighed, is put into the beaker of 500ml, beaker is moved into mixture of ice and water In, 30min is stirred under the conditions of 0 DEG C of ice-water bath, until sodium nitrate is completely dissolved;
2)1g spherical graphite is weighed, is added slowly in beaker, continues to stir 30min after all adding, until graphite mixes Uniformly;
3) 3gKMnO is weighed4, it is slowly added in beaker with the speed of every 10 minutes addition 1g, whole process continues 30min, needs It is to be noted that this process is slow as far as possible, prevent due to be added it is too fast cause local reaction excessively, reaction temperature increase, thus shadow Ring yield;Temperature is controlled in whole process and is no more than 10 DEG C, to KMnO4After being all added, high-speed stirred 2h, solution is gradually at this time It is changed into blackish green;
4)Beaker is moved into 35 DEG C of water-baths, continues to stir 2h;
5)100ml deionized water is added into beaker, when temperature reaches 80 DEG C, beaker is moved into 85 DEG C of water-bath and be stirred 30min;
6)Above-mentioned mixed liquor is moved into the beaker of 1L, is diluted to 500ml with 60 DEG C of deionized water, adds 60ml5wt%'s Hydrogen peroxide solution until no longer generating a large amount of bubbles, continues to stir 20 minutes until glassy yellow is presented in solution;
7)Above-mentioned mixed liquor is staggeredly washed with 10% hydrochloric acid solution and deionized water respectively, repeatedly operation 4 ~ 5 times, directly It is in neutrality to solution;
Second step is frozen and dried,
1)The graphene oxide solution being in neutrality prepared in the first step is packed into material disc by precooling after diluting, and is opened Vacuum-refrigerator first carries out precooling to the refrigeration storehouse of vacuum-refrigerator;Then material disc is put into the pre-freeze frame in refrigeration storehouse, it will Chiller probe comes into full contact with material, and then freezing frame is put into cold-trap, cover pre-freeze lid, when pre-freeze to material each section all After dropping to material eutectic point or less, then 1 ~ 1.5h is maintained, pre-freeze terminates;
2)It is dry, the good material of pre-freeze is moved on on gland drier, then drier is placed on cold-trap, organic glass on cover Glass cover opens vacuum meter, and carries out vacuum pumping to cold-trap with vacuum pump after screwing discharging valve, be less than internal vacuum 20Pa, 2 ~ 5h of drying time obtain fluffy graphene oxide solid;
Third step, the preparation of graphene oxide dispersion,
Graphene oxide solid after weighing drying, is added to the water, and prepares and obtains the graphene oxide that mass fraction is 1wt% Solution can instill a little ethanol solution to enhance dispersibility;Then mixed liquor is subjected to emulsification pretreatment operation, so that cluster Tissue can be dispersed under the action of high speed shear, obtain dispersion liquid more evenly;Emulsification pretreatment speed be 1100 ~ 1200r/min, time are 3 ~ 7min;Finally dispersion liquid is moved into and carries out ultrasound procedure 1h in Ultrasound Instrument, obtains graphene oxide Dispersion liquid;
4th step, coating, plastic,
By the concentration of graphene oxide dispersion, by the means such as being concentrated or diluting, adjusts and arrive 10mg/ml;Glass base will be passed through It is coated in the graphene oxide dispersion of bottom immersion 10mg/ml, then will have the glass base of graphene oxide dispersion Plastic in the solidification liquid of 0.1mol/ml is immersed at bottom;
5th step, is prepared graphene composite thin film,
Substrate is taken out, and substrate is put in a drying box into drying, controls 50 ~ 70 DEG C of drying temperature, by the drying of 6 ~ 8h, One layer of graphene composite thin film is covered in substrate of glass;Film is stripped down from substrate of glass, obtains oxidation stone Black alkene laminated film;
6th step, the reduction of graphene composite thin film obtain composite graphite alkene Electric radiant Heating Film,
It evaporates steam at 80 DEG C using hydroiodic acid to restore above-mentioned graphene composite thin film, after for 24 hours Obtain graphene composite film;Obtained graphene composite film is rolled by calender finally, is obtained of the invention compound Graphene Electric radiant Heating Film, by the calendering of calender, so that graphene composite film has good flexibility, ductility and orientation Property.
As preferred embodiment, in the preparation of the graphene oxide dispersion of the third step, it is to mass fraction Ethanol solution is added dropwise in the graphene oxide solution of 1wt%, enhances the dispersibility of dispersion liquid.
Further, the solidification liquid in the 4th step is small molecule compound comprising CaCl2, 1- butyl -3- methyl Imidazoles L lactate, chlorination 1- amine propyl -3- methylimidazole or 1,8- octamethylenediamine, due to oxygen-containing on graphene oxide layer surface Acid group has negative electrical charge, CaCl2With cation contained in ionic liquid, can shield it is mutually exclusive between negative electrical charge, So that film plastic;1- butyl -3- methylimidazole L lactate, chlorination 1- amine propyl -3- methylimidazole and 1,8- octamethylenediamine ion At least contain-a NH in liquid2Group can form amido bond, oxidation reinforced stone with the-COOH in graphene oxide layer The crosslinking of black alkene lamella.
The present invention compared with prior art, the preparation method of composite graphite alkene Electric radiant Heating Film of the invention, using the present invention Composite graphite alkene Electric radiant Heating Film preparation method preparation combined oxidation graphene film hydroiodic acid reduction after, by calendering Composite graphite alkene Electric radiant Heating Film is obtained after technique, with good thermal conductivity and electric conductivity, and easy to operate, low in cost, energy It consumes smaller.
Detailed description of the invention
Fig. 1 is raw material graphene oxide of the invention, CaCl2, 1- butyl -3- methylimidazole L lactate, chlorination 1- amine third Base -3- methylimidazole and 1,8- octamethylenediamine structural formula schematic diagram;
Wherein, scheme(a)For the structural formula of raw material graphene oxide, figure(b)For CaCl2Structural formula, figure(c)For 1- The structural formula of butyl -3- methylimidazole L lactate, figure(d)For the molecular formula knot of chlorination 1- amine propyl -3- methylimidazole Structure, figure(e)For the structural formula of 1,8- octamethylenediamine.
Specific embodiment
Embodiment 1:
The preparation method of composite graphite alkene Electric radiant Heating Film of the invention, the preparation method comprises the following steps:
The first step prepares graphene oxide solution using improved Hummers method, and is washed to neutrality;
1)0.5g sodium nitrate powder and the concentrated sulfuric acid of 70ml are weighed, is put into the beaker of 500ml, beaker is moved into mixture of ice and water In, 30min is stirred under the conditions of 0 DEG C of ice-water bath, until sodium nitrate is completely dissolved;
2)1g spherical graphite is weighed, is added slowly in beaker, continues to stir 30min after all adding, until graphite mixes Uniformly;
3) 3gKMnO is weighed4, it is slowly added in beaker with the speed of every 10 minutes addition 1g, whole process continues 30min;Entirely Control temperature is no more than 10 DEG C in the process, to KMnO4After being all added, high-speed stirred 2h, solution is gradually converted into blackish green at this time Color;
4)Beaker is moved into 35 DEG C of water-baths, continues to stir 2h;
5)100ml deionized water is added into beaker, when temperature reaches 80 DEG C, beaker is moved into 85 DEG C of water-bath and be stirred 30min;
6)Above-mentioned mixed liquor is moved into the beaker of 1L, is diluted to 500ml with 60 DEG C of deionized water, adds 60ml5wt%'s Hydrogen peroxide solution until no longer generating a large amount of bubbles, continues to stir 20 minutes until glassy yellow is presented in solution;
7)Above-mentioned mixed liquor is staggeredly washed with 10% hydrochloric acid solution and deionized water respectively, repeatedly operation 4 ~ 5 times, directly It is in neutrality to solution;
Second step is frozen and dried,
1)The graphene oxide solution being in neutrality prepared in the first step is packed into material disc by precooling after diluting, and is opened Vacuum-refrigerator first carries out precooling to the refrigeration storehouse of vacuum-refrigerator;Then material disc is put into the pre-freeze frame in refrigeration storehouse, it will Chiller probe comes into full contact with material, and then freezing frame is put into cold-trap, cover pre-freeze lid, when pre-freeze to material each section all After dropping to material eutectic point or less, then 1h is maintained, pre-freeze terminates;
2)It is dry, the good material of pre-freeze is moved on on gland drier, then drier is placed on cold-trap, organic glass on cover Glass cover opens vacuum meter, and carries out vacuum pumping to cold-trap with vacuum pump after screwing discharging valve, be less than internal vacuum 20Pa, drying time 3h obtain fluffy graphene oxide solid;
Third step, the preparation of graphene oxide dispersion,
Graphene oxide solid after weighing drying, is added to the water, and prepares and obtains the graphene oxide that mass fraction is 1wt% Solution, and ethanol solution is added dropwise to the graphene oxide solution that mass fraction is 1wt%, enhance the dispersibility of dispersion liquid;Then will Mixed liquor carries out emulsification pretreatment operation, and the tissue of cluster is dispersed under the action of high speed shear, obtains more Even dispersion liquid;Emulsification pretreatment speed is 1200r/min, time 3min;Finally dispersion liquid is moved into Ultrasound Instrument and is surpassed Sound operates 1h, obtains graphene oxide dispersion;
4th step, coating, plastic,
By the concentration of graphene oxide dispersion, by the means such as being concentrated or diluting, adjusts and arrive 10mg/ml;Glass base will be passed through It is coated in the graphene oxide dispersion of bottom immersion 10mg/ml, then will have the glass base of graphene oxide dispersion The CaCl of bottom immersion 0.1mol/ml2Middle plastic;
5th step, is prepared graphene composite thin film,
Substrate is taken out, and substrate is put in a drying box into drying, 60 DEG C of drying temperature are controlled, by the drying of 8h, in glass One layer of graphene composite thin film is covered in substrate;Film is stripped down from substrate of glass, obtains graphene oxide Laminated film;
6th step, the reduction of graphene composite thin film obtain composite graphite alkene Electric radiant Heating Film,
It evaporates steam at 80 DEG C using hydroiodic acid to restore above-mentioned graphene composite thin film, after for 24 hours Obtain graphene composite film;Obtained graphene composite film is rolled by calender finally, is obtained of the invention compound Graphene Electric radiant Heating Film, by the calendering of calender, so that graphene composite film has good flexibility, ductility and orientation Property.
Embodiment 2:
The preparation method of composite graphite alkene Electric radiant Heating Film of the invention, the preparation method comprises the following steps:
The first step prepares graphene oxide solution using improved Hummers method, and is washed to neutrality;
1)0.5g sodium nitrate powder and the concentrated sulfuric acid of 70ml are weighed, is put into the beaker of 500ml, beaker is moved into mixture of ice and water In, 30min is stirred under the conditions of 0 DEG C of ice-water bath, until sodium nitrate is completely dissolved;
2)1g spherical graphite is weighed, is added slowly in beaker, continues to stir 30min after all adding, until graphite mixes Uniformly;
3) 3gKMnO is weighed4, it is slowly added in beaker with the speed of every 10 minutes addition 1g, whole process continues 30min;Entirely Control temperature is no more than 10 DEG C in the process, to KMnO4After being all added, high-speed stirred 2h, solution is gradually converted into blackish green at this time Color;
4)Beaker is moved into 35 DEG C of water-baths, continues to stir 2h;
5)100ml deionized water is added into beaker, when temperature reaches 80 DEG C, beaker is moved into 85 DEG C of water-bath and be stirred 30min;
6)Above-mentioned mixed liquor is moved into the beaker of 1L, is diluted to 500ml with 60 DEG C of deionized water, adds 60ml5wt%'s Hydrogen peroxide solution until no longer generating a large amount of bubbles, continues to stir 20 minutes until glassy yellow is presented in solution;
7)Above-mentioned mixed liquor is staggeredly washed with 10% hydrochloric acid solution and deionized water respectively, repeatedly operation 4 ~ 5 times, directly It is in neutrality to solution;
Second step is frozen and dried,
1)The graphene oxide solution being in neutrality prepared in the first step is packed into material disc by precooling after diluting, and is opened Vacuum-refrigerator first carries out precooling to the refrigeration storehouse of vacuum-refrigerator;Then material disc is put into the pre-freeze frame in refrigeration storehouse, it will Chiller probe comes into full contact with material, and then freezing frame is put into cold-trap, cover pre-freeze lid, when pre-freeze to material each section all After dropping to material eutectic point or less, then 1.5h is maintained, pre-freeze terminates;
2)It is dry, the good material of pre-freeze is moved on on gland drier, then drier is placed on cold-trap, organic glass on cover Glass cover opens vacuum meter, and carries out vacuum pumping to cold-trap with vacuum pump after screwing discharging valve, be less than internal vacuum 20Pa, drying time 3h obtain fluffy graphene oxide solid;
Third step, the preparation of graphene oxide dispersion,
Graphene oxide solid after weighing drying, is added to the water, and prepares and obtains the graphene oxide that mass fraction is 1wt% Solution, and ethanol solution is added dropwise to the graphene oxide solution that mass fraction is 1wt%, enhance the dispersibility of dispersion liquid;Then will Mixed liquor carries out emulsification pretreatment operation, and the tissue of cluster is dispersed under the action of high speed shear, obtains more Even dispersion liquid;Emulsification pretreatment speed is 1100r/min, time 6min;Finally dispersion liquid is moved into Ultrasound Instrument and is surpassed Sound operates 1h, obtains graphene oxide dispersion;
4th step, coating, plastic,
By the concentration of graphene oxide dispersion, by the means such as being concentrated or diluting, adjusts and arrive 10mg/ml;Glass base will be passed through It is coated in the graphene oxide dispersion of bottom immersion 10mg/ml, then will have the glass base of graphene oxide dispersion Plastic in the 1- butyl -3- methylimidazole L lactate of 0.1mol/ml is immersed at bottom;
5th step, is prepared graphene composite thin film,
Substrate is taken out, and substrate is put in a drying box into drying, 55 DEG C of drying temperature are controlled, by the drying of 8h, in glass One layer of graphene composite thin film is covered in substrate;Film is stripped down from substrate of glass, obtains graphene oxide Laminated film;
6th step, the reduction of graphene composite thin film obtain composite graphite alkene Electric radiant Heating Film,
It evaporates steam at 80 DEG C using hydroiodic acid to restore above-mentioned graphene composite thin film, after for 24 hours Obtain graphene composite film;Obtained graphene composite film is rolled by calender finally, is obtained of the invention compound Graphene Electric radiant Heating Film, by the calendering of calender, so that graphene composite film has good flexibility, ductility and orientation Property.
Embodiment 3:
The preparation method of composite graphite alkene Electric radiant Heating Film of the invention, the preparation method comprises the following steps:
The first step prepares graphene oxide solution using improved Hummers method, and is washed to neutrality;
1)0.5g sodium nitrate powder and the concentrated sulfuric acid of 70ml are weighed, is put into the beaker of 500ml, beaker is moved into mixture of ice and water In, 30min is stirred under the conditions of 0 DEG C of ice-water bath, until sodium nitrate is completely dissolved;
2)1g spherical graphite is weighed, is added slowly in beaker, continues to stir 30min after all adding, until graphite mixes Uniformly;
3) 3gKMnO is weighed4, it is slowly added in beaker with the speed of every 10 minutes addition 1g, whole process continues 30min;Entirely Control temperature is no more than 10 DEG C in the process, to KMnO4After being all added, high-speed stirred 2h, solution is gradually converted into blackish green at this time Color;
4)Beaker is moved into 35 DEG C of water-baths, continues to stir 2h;
5)100ml deionized water is added into beaker, when temperature reaches 80 DEG C, beaker is moved into 85 DEG C of water-bath and be stirred 30min;
6)Above-mentioned mixed liquor is moved into the beaker of 1L, is diluted to 500ml with 60 DEG C of deionized water, adds 60ml5wt%'s Hydrogen peroxide solution until no longer generating a large amount of bubbles, continues to stir 20 minutes until glassy yellow is presented in solution;
7)Above-mentioned mixed liquor is staggeredly washed with 10% hydrochloric acid solution and deionized water respectively, repeatedly operation 4 ~ 5 times, directly It is in neutrality to solution;
Second step is frozen and dried,
1)The graphene oxide solution being in neutrality prepared in the first step is packed into material disc by precooling after diluting, and is opened Vacuum-refrigerator first carries out precooling to the refrigeration storehouse of vacuum-refrigerator;Then material disc is put into the pre-freeze frame in refrigeration storehouse, it will Chiller probe comes into full contact with material, and then freezing frame is put into cold-trap, cover pre-freeze lid, when pre-freeze to material each section all After dropping to material eutectic point or less, then 1h is maintained, pre-freeze terminates;
2)It is dry, the good material of pre-freeze is moved on on gland drier, then drier is placed on cold-trap, organic glass on cover Glass cover opens vacuum meter, and carries out vacuum pumping to cold-trap with vacuum pump after screwing discharging valve, be less than internal vacuum 20Pa, 2 ~ 5h of drying time obtain fluffy graphene oxide solid;
Third step, the preparation of graphene oxide dispersion,
Graphene oxide solid after weighing drying, is added to the water, and prepares and obtains the graphene oxide that mass fraction is 1wt% Solution, and ethanol solution is added dropwise to the graphene oxide solution that mass fraction is 1wt%, enhance the dispersibility of dispersion liquid;Then will Mixed liquor carries out emulsification pretreatment operation, and the tissue of cluster is dispersed under the action of high speed shear, obtains more Even dispersion liquid;Emulsification pretreatment speed is 1200r/min, time 4min;Finally dispersion liquid is moved into Ultrasound Instrument and is surpassed Sound operates 1h, obtains graphene oxide dispersion;
4th step, coating, plastic,
By the concentration of graphene oxide dispersion, by the means such as being concentrated or diluting, adjusts and arrive 10mg/ml;Glass base will be passed through It is coated in the graphene oxide dispersion of bottom immersion 10mg/ml, then will have the glass base of graphene oxide dispersion Plastic in the chlorination 1- amine propyl -3- methylimidazole of 0.1mol/ml is immersed at bottom;
5th step, is prepared graphene composite thin film,
Substrate is taken out, and substrate is put in a drying box into drying, 60 DEG C of drying temperature are controlled, by the drying of 8h, in glass One layer of graphene composite thin film is covered in substrate;Film is stripped down from substrate of glass, obtains graphene oxide Laminated film;
6th step, the reduction of graphene composite thin film obtain composite graphite alkene Electric radiant Heating Film,
It evaporates steam at 80 DEG C using hydroiodic acid to restore above-mentioned graphene composite thin film, after for 24 hours Obtain graphene composite film;Obtained graphene composite film is rolled by calender finally, is obtained of the invention compound Graphene Electric radiant Heating Film, by the calendering of calender, so that graphene composite film has good flexibility, ductility and orientation Property.
Embodiment 4:
The preparation method of composite graphite alkene Electric radiant Heating Film of the invention, the preparation method comprises the following steps:
The first step prepares graphene oxide solution using improved Hummers method, and is washed to neutrality;
1)0.5g sodium nitrate powder and the concentrated sulfuric acid of 70ml are weighed, is put into the beaker of 500ml, beaker is moved into mixture of ice and water In, 30min is stirred under the conditions of 0 DEG C of ice-water bath, until sodium nitrate is completely dissolved;
2)1g spherical graphite is weighed, is added slowly in beaker, continues to stir 30min after all adding, until graphite mixes Uniformly;
3) 3gKMnO is weighed4, it is slowly added in beaker with the speed of every 10 minutes addition 1g, whole process continues 30min;Entirely Control temperature is no more than 10 DEG C in the process, to KMnO4After being all added, high-speed stirred 2h, solution is gradually converted into blackish green at this time Color;
4)Beaker is moved into 35 DEG C of water-baths, continues to stir 2h;
5)100ml deionized water is added into beaker, when temperature reaches 80 DEG C, beaker is moved into 85 DEG C of water-bath and be stirred 30min;
6)Above-mentioned mixed liquor is moved into the beaker of 1L, is diluted to 500ml with 60 DEG C of deionized water, adds 60ml5wt%'s Hydrogen peroxide solution until no longer generating a large amount of bubbles, continues to stir 20 minutes until glassy yellow is presented in solution;
7)Above-mentioned mixed liquor is staggeredly washed with 10% hydrochloric acid solution and deionized water respectively, repeatedly operation 4 ~ 5 times, directly It is in neutrality to solution;
Second step is frozen and dried,
1)The graphene oxide solution being in neutrality prepared in the first step is packed into material disc by precooling after diluting, and is opened Vacuum-refrigerator first carries out precooling to the refrigeration storehouse of vacuum-refrigerator;Then material disc is put into the pre-freeze frame in refrigeration storehouse, it will Chiller probe comes into full contact with material, and then freezing frame is put into cold-trap, cover pre-freeze lid, when pre-freeze to material each section all After dropping to material eutectic point or less, then 1h is maintained, pre-freeze terminates;
2)It is dry, the good material of pre-freeze is moved on on gland drier, then drier is placed on cold-trap, organic glass on cover Glass cover opens vacuum meter, and carries out vacuum pumping to cold-trap with vacuum pump after screwing discharging valve, be less than internal vacuum 20Pa, drying time 3h obtain fluffy graphene oxide solid;
Third step, the preparation of graphene oxide dispersion,
Graphene oxide solid after weighing drying, is added to the water, and prepares and obtains the graphene oxide that mass fraction is 1wt% Solution, and ethanol solution is added dropwise to the graphene oxide solution that mass fraction is 1wt%, enhance the dispersibility of dispersion liquid;Then will Mixed liquor carries out emulsification pretreatment operation, and the tissue of cluster is dispersed under the action of high speed shear, obtains more Even dispersion liquid;Emulsification pretreatment speed is 1100r/min, time 5min;Finally dispersion liquid is moved into Ultrasound Instrument and is surpassed Sound operates 1h, obtains graphene oxide dispersion;
4th step, coating, plastic,
By the concentration of graphene oxide dispersion, by the means such as being concentrated or diluting, adjusts and arrive 10mg/ml;Glass base will be passed through It is coated in the graphene oxide dispersion of bottom immersion 10mg/ml, then will have the glass base of graphene oxide dispersion Plastic in 1, the 8- octamethylenediamine of 0.1mol/ml is immersed at bottom;
5th step, is prepared graphene composite thin film,
Substrate is taken out, and substrate is put in a drying box into drying, 70 DEG C of drying temperature are controlled, by the drying of 7h, in glass One layer of graphene composite thin film is covered in substrate;Film is stripped down from substrate of glass, obtains graphene oxide Laminated film;
6th step, the reduction of graphene composite thin film obtain composite graphite alkene Electric radiant Heating Film,
It evaporates steam at 80 DEG C using hydroiodic acid to restore above-mentioned graphene composite thin film, after for 24 hours Obtain graphene composite film;Obtained graphene composite film is rolled by calender finally, is obtained of the invention compound Graphene Electric radiant Heating Film, by the calendering of calender, so that graphene composite film has good flexibility, ductility and orientation Property.
The preparation method of composite graphite alkene Electric radiant Heating Film of the invention, as shown in Figure 1, due on graphene oxide layer surface Oxygen-containing acid group has negative electrical charge, CaCl2With cation contained in ionic liquid, the mutual row between negative electrical charge can be shielded Reprimand, so that film plastic;1- butyl -3- methylimidazole L lactate, chlorination 1- amine propyl -3- methylimidazole and 1,8- octamethylenediamine At least contain-a NH in ionic liquid2Group can form amido bond with the-COOH in graphene oxide layer, reinforce oxygen The crosslinking of graphite alkene lamella;The calcium ion in calcium chloride in embodiment 1 enters graphene oxide interlayer, so that oxidation stone The electrostatic repulsion of black alkene piece interlayer weakens, and orientation is reinforced, and then forms colloid not soluble in water;Embodiment 2 uses 1- butyl- 3- methylimidazole L lactate is as solidification liquid, and reaction process is similar to Example 1, but in example 2,1- butyl -3- first Cationic size is greater than calcium ion in its ionic liquid of base imidazoles L lactate, so graphene oxide layer takes original Tropism upper piece interlamellar spacing increases;Due to having-a NH in the chlorination 1- amine propyl -3- methylimidazole in embodiment 32, so Its cation can form amido bond with-COOH, to further increase its piece interlamellar spacing when entering graphene oxide layer; 1,8- octamethylenediamine in embodiment 4 contain there are two-NH2, and its carbochain is longer, it can be as bridge by two graphene sheet layers Together using covalent bond institute, to further widen the interlamellar spacing of graphene oxide.
Above-described embodiment is only better embodiment of the invention, therefore all according to structure described in present patent application range It makes, the equivalent change or modification that feature and principle are done, is included in the scope of the patent application of the present invention.

Claims (3)

1. a kind of preparation method of composite graphite alkene Electric radiant Heating Film, which is characterized in that the preparation method comprises the following steps:
The first step prepares graphene oxide solution using improved Hummers method, and is washed to neutrality;
1)0.5g sodium nitrate powder and the concentrated sulfuric acid of 70ml are weighed, is put into the beaker of 500ml, beaker is moved into mixture of ice and water In, 30min is stirred under the conditions of 0 DEG C of ice-water bath, until sodium nitrate is completely dissolved;
2)1g spherical graphite is weighed, is added slowly in beaker, continues to stir 30min after all adding, until graphite mixes Uniformly;
3) 3gKMnO is weighed4, it is slowly added in beaker with the speed of every 10 minutes addition 1g, whole process continues 30min;Entirely Control temperature is no more than 10 DEG C in the process, to KMnO4After being all added, high-speed stirred 2h, solution is gradually converted into blackish green at this time Color;
4)Beaker is moved into 35 DEG C of water-baths, continues to stir 2h;
5)100ml deionized water is added into beaker, when temperature reaches 80 DEG C, beaker is moved into 85 DEG C of water-bath and be stirred 30min;
6)Above-mentioned mixed liquor is moved into the beaker of 1L, is diluted to 500ml with 60 DEG C of deionized water, adds 60ml5wt%'s Hydrogen peroxide solution until no longer generating a large amount of bubbles, continues to stir 20 minutes until glassy yellow is presented in solution;
7)Above-mentioned mixed liquor is staggeredly washed with 10% hydrochloric acid solution and deionized water respectively, repeatedly operation 4 ~ 5 times, directly It is in neutrality to solution;
Second step is frozen and dried,
1)The graphene oxide solution being in neutrality prepared in the first step is packed into material disc by precooling after diluting, and is opened Vacuum-refrigerator first carries out precooling to the refrigeration storehouse of vacuum-refrigerator;Then material disc is put into the pre-freeze frame in refrigeration storehouse, it will Chiller probe comes into full contact with material, and then freezing frame is put into cold-trap, cover pre-freeze lid, when pre-freeze to material each section all After dropping to material eutectic point or less, then 1 ~ 1.5h is maintained, pre-freeze terminates;
2)It is dry, the good material of pre-freeze is moved on on gland drier, then drier is placed on cold-trap, organic glass on cover Glass cover opens vacuum meter, and carries out vacuum pumping to cold-trap with vacuum pump after screwing discharging valve, be less than internal vacuum 20Pa, 2 ~ 5h of drying time obtain fluffy graphene oxide solid;
Third step, the preparation of graphene oxide dispersion,
Graphene oxide solid after weighing drying, is added to the water, and prepares and obtains the graphene oxide that mass fraction is 1wt% Solution;Then mixed liquor is subjected to emulsification pretreatment operation, the tissue of cluster is dispersed under the action of high speed shear It opens, obtains dispersion liquid more evenly;Emulsification pretreatment speed is 1100 ~ 1200r/min, and the time is 3 ~ 7min;Finally by dispersion liquid It moves into and carries out ultrasound procedure 1h in Ultrasound Instrument, obtain graphene oxide dispersion;
4th step, coating, plastic,
By the concentration of graphene oxide dispersion, by the means such as being concentrated or diluting, adjusts and arrive 10mg/ml;Glass base will be passed through It is coated in the graphene oxide dispersion of bottom immersion 10mg/ml, then will have the glass base of graphene oxide dispersion Plastic in the solidification liquid of 0.1mol/ml is immersed at bottom;
5th step, is prepared graphene composite thin film,
Substrate is taken out, and substrate is put in a drying box into drying, controls 50 ~ 70 DEG C of drying temperature, by the drying of 6 ~ 8h, One layer of graphene composite thin film is covered in substrate of glass;Film is stripped down from substrate of glass, obtains oxidation stone Black alkene laminated film;
6th step, the reduction of graphene composite thin film obtain composite graphite alkene Electric radiant Heating Film,
It evaporates steam at 80 DEG C using hydroiodic acid to restore above-mentioned graphene composite thin film, after for 24 hours Obtain graphene composite film;Obtained graphene composite film is rolled by calender finally, is obtained of the invention compound Graphene Electric radiant Heating Film.
2. the preparation method of composite graphite alkene Electric radiant Heating Film according to claim 1, which is characterized in that the oxygen of the third step In the preparation of graphite alkene dispersion liquid, ethanol solution is added dropwise to the graphene oxide solution that mass fraction is 1wt%.
3. the preparation method of composite graphite alkene Electric radiant Heating Film according to claim 1, which is characterized in that in the 4th step Solidification liquid is small molecule compound comprising CaCl2, 1- butyl -3- methylimidazole L lactate, chlorination 1- amine propyl -3- methyl Imidazoles or 1,8- octamethylenediamine.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111743192A (en) * 2020-07-10 2020-10-09 湖北中烟工业有限责任公司 Preparation method of geraniol-graphene oxide slow-release heat-conducting composite material for cigarettes
CN112299404A (en) * 2020-09-21 2021-02-02 宁波华丰包装有限公司 Method for preparing graphene oxide film in batch and graphene oxide film prepared by method
WO2021115669A1 (en) 2019-12-09 2021-06-17 Robert Bosch Gmbh Electrical conductor made of graphene and/or carbon nanotubes having coated joints
CN113817288A (en) * 2021-09-04 2021-12-21 高祥 Heat-conducting engineering plastic and preparation method thereof
DE102021210974A1 (en) 2021-09-30 2023-03-30 Robert Bosch Gesellschaft mit beschränkter Haftung Electrical machine and method for inserting at least one electrical conductor assembly into at least one slot of a stator or rotor for an electrical machine
DE102022203207A1 (en) 2022-03-31 2023-10-05 Robert Bosch Gesellschaft mit beschränkter Haftung Process for producing a graphene film

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102750998A (en) * 2012-07-09 2012-10-24 深圳市贝特瑞纳米科技有限公司 Transparent graphene conductive thin film and preparation method thereof
CN103387225A (en) * 2012-11-21 2013-11-13 厦门凯纳石墨烯技术有限公司 Heat-conducting graphite membrane and preparation method
CN104118867A (en) * 2014-07-07 2014-10-29 苏州世优佳电子科技有限公司 Preparation method of graphite oxide
CN106241776A (en) * 2016-07-13 2016-12-21 南京邮电大学 A kind of preparation method of the graphene composite thin film of LBL self-assembly
CN106332327A (en) * 2016-08-19 2017-01-11 苏州思创源博电子科技有限公司 Preparation method for composite graphene electrothermal film
WO2017201987A1 (en) * 2016-05-24 2017-11-30 福州大学 Antistatic composite nanomaterial film and preparation method thereof
WO2018004099A1 (en) * 2016-06-27 2018-01-04 재단법인차세대융합기술연구원 Graphene oxide/carbon nanotube composite fiber having heterojunction structure, and method for manufacturing graphene oxide/graphene composite fiber or graphene oxide/graphene/carbon nanotube composite fiber

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102750998A (en) * 2012-07-09 2012-10-24 深圳市贝特瑞纳米科技有限公司 Transparent graphene conductive thin film and preparation method thereof
CN103387225A (en) * 2012-11-21 2013-11-13 厦门凯纳石墨烯技术有限公司 Heat-conducting graphite membrane and preparation method
CN104118867A (en) * 2014-07-07 2014-10-29 苏州世优佳电子科技有限公司 Preparation method of graphite oxide
WO2017201987A1 (en) * 2016-05-24 2017-11-30 福州大学 Antistatic composite nanomaterial film and preparation method thereof
WO2018004099A1 (en) * 2016-06-27 2018-01-04 재단법인차세대융합기술연구원 Graphene oxide/carbon nanotube composite fiber having heterojunction structure, and method for manufacturing graphene oxide/graphene composite fiber or graphene oxide/graphene/carbon nanotube composite fiber
CN106241776A (en) * 2016-07-13 2016-12-21 南京邮电大学 A kind of preparation method of the graphene composite thin film of LBL self-assembly
CN106332327A (en) * 2016-08-19 2017-01-11 苏州思创源博电子科技有限公司 Preparation method for composite graphene electrothermal film

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
周晓东 等: "高速剪切辅助氧化还原法制备石墨烯", 《材料导报》 *
申佳欣: "石墨烯薄膜的制备工艺及其应用", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅰ辑》 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021115669A1 (en) 2019-12-09 2021-06-17 Robert Bosch Gmbh Electrical conductor made of graphene and/or carbon nanotubes having coated joints
US11875913B2 (en) 2019-12-09 2024-01-16 Robert Bosch Gmbh Electrical conductor made of graphene and/or carbon nanotubes having coated joints
CN111743192A (en) * 2020-07-10 2020-10-09 湖北中烟工业有限责任公司 Preparation method of geraniol-graphene oxide slow-release heat-conducting composite material for cigarettes
CN111743192B (en) * 2020-07-10 2022-05-17 湖北中烟工业有限责任公司 Preparation method of geraniol-graphene oxide slow-release heat-conducting composite material for cigarettes
CN112299404A (en) * 2020-09-21 2021-02-02 宁波华丰包装有限公司 Method for preparing graphene oxide film in batch and graphene oxide film prepared by method
CN113817288A (en) * 2021-09-04 2021-12-21 高祥 Heat-conducting engineering plastic and preparation method thereof
CN113817288B (en) * 2021-09-04 2023-12-15 苏州和庚丽塑胶科技有限公司 Heat-conducting engineering plastic and preparation method thereof
DE102021210974A1 (en) 2021-09-30 2023-03-30 Robert Bosch Gesellschaft mit beschränkter Haftung Electrical machine and method for inserting at least one electrical conductor assembly into at least one slot of a stator or rotor for an electrical machine
WO2023052116A1 (en) 2021-09-30 2023-04-06 Robert Bosch Gmbh Electric machine and method for placing at least one electrical composite conductor into at least one groove of a stator or rotor for an electric machine
DE102022203207A1 (en) 2022-03-31 2023-10-05 Robert Bosch Gesellschaft mit beschränkter Haftung Process for producing a graphene film
WO2023186456A1 (en) 2022-03-31 2023-10-05 Robert Bosch Gmbh Method for producing a graphene film

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