CN107101254A - A kind of CNT graphene floor heating tiles - Google Patents
A kind of CNT graphene floor heating tiles Download PDFInfo
- Publication number
- CN107101254A CN107101254A CN201710381221.1A CN201710381221A CN107101254A CN 107101254 A CN107101254 A CN 107101254A CN 201710381221 A CN201710381221 A CN 201710381221A CN 107101254 A CN107101254 A CN 107101254A
- Authority
- CN
- China
- Prior art keywords
- floor heating
- cnt
- heating tiles
- graphite
- expanded graphite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D13/00—Electric heating systems
- F24D13/02—Electric heating systems solely using resistance heating, e.g. underfloor heating
- F24D13/022—Electric heating systems solely using resistance heating, e.g. underfloor heating resistances incorporated in construction elements
- F24D13/024—Electric heating systems solely using resistance heating, e.g. underfloor heating resistances incorporated in construction elements in walls, floors, ceilings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
- E04F15/181—Insulating layers integrally formed with the flooring or the flooring elements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heater 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
- H05B3/14—Heater 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
- H05B3/145—Carbon only, e.g. carbon black, graphite
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
- E04F2290/02—Specially adapted covering, lining or flooring elements not otherwise provided for for accommodating service installations or utility lines, e.g. heating conduits, electrical lines, lighting devices or service outlets
- E04F2290/023—Specially adapted covering, lining or flooring elements not otherwise provided for for accommodating service installations or utility lines, e.g. heating conduits, electrical lines, lighting devices or service outlets for heating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/017—Manufacturing methods or apparatus for heaters
Abstract
The invention discloses a kind of CNT graphene floor heating tiles, it is characterised in that the floor heating tiles include electrothermal layer, and the composition material of the electrothermal layer includes：CNT, graphene, ammonium carbonate, iron chloride；The mol ratio of the CNT and graphene is 5 ~ 9.The floor heating tiles of the present invention have good electric conductivity, meet the requirement that people save the energy.
Description
Technical field
The present invention relates to floor heating tiles field, more particularly to a kind of CNT graphene floor heating tiles.
Background technology
Build a resource-conserving society turns into a theme of our current eras, and people want to indoor thermal environment
Ask continuous improvement, the energy-saving and environmental protection of heating system and a comfortable tendency as modern heating technology development.Ground
Brick heat loss through radiation is the heating system of the most comfortable, how to improve the efficiency of heat loss through radiation and turns into a generality skill urgently to be resolved hurrily
Art problem.
Graphene and CNT have good electricity, thermal conductivity and mechanical strength because of its unique crystal structure
Matter, this is widely used in Nano electric material and device.Being combined at present on graphene and CNT is used for electric heating
Less in the design and preparation of brick, it is slow to there is firing rate in existing graphene floor heating tiles, during use electrothermal layer power by
Gradual change is big, it is impossible to meet the problems such as people are to floor heating tiles power conservation requirement, it can be seen that, need a kind of new floor heating tiles badly at present, with
Solve the problem of prior art is present.
The content of the invention
In order to solve the above technical problems, one aspect of the present invention is：A kind of CNT graphene floor heating
Brick, it is characterised in that the floor heating tiles include electrothermal layer, the composition material of the electrothermal layer includes：CNT, graphene, carbon
Sour ammonium, iron chloride.
It is preferred that, the graphene is multi-layer graphene.
It is preferred that, the mol ratio of the CNT and graphene is 5 ~ 9.
It is furthermore preferred that the mol ratio of the CNT and graphene is 7.6.
When mol ratio is 7.6, preferably, its electrical conductivity is low for performance floor heating tiles performance, and programming rate is fast, and power is for a long time
Energization hardly changes.
It is preferred that, the electrothermal layer is prepared from by following steps, and graphite is put into Muffle furnace and expanded graphite is made by a.;
B. expanded graphite is modified;C. the graphite in step b is placed in chemical vapor deposition stove using chemical vapor deposition method swollen
Deposition of carbon nanotubes in graphite, is made electrothermal layer.
The expanded graphite being modified is during deposition of carbon nanotubes, and graphite flake will be further peeled in itself, decomposes
Into graphene.Because native graphite belongs to layer structure, adhesion is weaker between layers, then easily inserts some atoms and group
To graphite layers, form compound between graphite layers and as can expanded graphite.Under high temperature action, intercalation compound decomposes generation
A large amount of gases, hundreds times of volumetric expansion.In chemical vapor deposition processes, then it can enter one in interlayer in-situ preparation CNT
Graphite linings are separated and prepare multi-layer graphene by step, so as to multi-layer graphene formed in situ/CNT electrothermal layer.
It is preferred that, the step b. modifications expanded graphite detailed process is that expanded graphite is immersed in into 0.3 ~ 0.85 carbonic acid
In aqueous ammonium, then the aqueous solution for containing 0.15 ~ 0.52 mol/L iron chloride is added dropwise to containing expanded dropwise under agitation
In the above-mentioned solution of graphite, stirring stands the h of aging 3, filters, drying, 650 DEG C of roasting 45min, wears into fine powder
It is preferred that, it is 0.65mol/L by the ammonium carbonate solution concentration.
When the graphene that ammonium carbonate solution concentration is 0.65mol/L formation is multi-layer graphene piece and transparent shape.
It is preferred that, it is 0.32mol/L by the ferric chloride in aqueous solution concentration.
The graphene film obtained in chemical vapor deposition is most thin.Because in the low solution of iron concentration, penetrating into
Few to the iron atom amount between graphite flake layer, the quantity of carbon nanotubes grown between graphite flake layer is also few, the number of graphite sheets strutted
Also it is few, so graphite flake thick in composite powder is also more.When iron concentration is high in decorating liquid, iron ion group in solution
Size is big, and now iron ion group can only be penetrated between the graphite flake layer of wide arc gap, CNT can only wide arc gap graphite
Lamella is deposited, so the thickness of multi-layer graphene is also thicker;And when iron concentration is in 0.32mol/L, the size of iron ion group
Also small, quantity is quite a few, and they can be penetrated between the graphite flake of smaller spacing, so when deposition of carbon nanotubes, being supportted
The graphene film quantity opened is more, and lamellar spacing is most thin.
It is preferred that, the insulation layer material is foamed concrete.
Using foamed concrete as building masonry wall and roofing, with good energy-saving effect, and in the present invention
In heating layer cooperate, floor heating tiles temperature is increased fast.
It is preferred that, the back side of floor heating tiles is sequentially provided with electrothermal layer, the periphery of electrothermal layer and heat-insulation layer described in heat-insulation layer and is provided with
Confining bed, with the ceramic tile back face, sandblasting layer is arranged below in the heat-insulation layer and confining bed,
The beneficial effects of the invention are as follows：
1) it is energy-efficient, CNT graphene make electrothermal layer conductive exothermal when be directly convert electrical energy into heat energy without
Luminous energy and mechanical energy can be produced, almost without itself heat loss, the thermal efficiency is up to more than 98%, and wherein most is with radiation mode
Transmission, and be planar heating, electrothermal calefactive rate is fast and uniform.It is powered three minutes or so, electrothermal layer surface temperature is that can reach design
Temperature.
2）It is ultra-thin, save space, easy to process, unique processing technology allow the thickness of heating board reach 0.32~
1.4mm, electrothermal layer（Element）It can paste, groove is inserted, screw is fastened in floor heating tiles, space is not take up, in addition, Product processing
Process is simple, convenient.
3）Safety durable, the heater that electrothermal layer is used is nonmetallic materials, and surface is using high-strength insulating material through height
Warm high pressure is composited, in the case where being electrified for a long time operation, moistureproof with corrosion-resistant, clearing damp, the performance that power hardly changes.
4）Environmental protection, CNT graphene electrothermal layer is nonmetallic pure resistance heating element heater, noiseless during operation, nothing
Electromagnetic pollution, without electrostatic, without floating dust, the flames of anger, can clearing damp, dehumidifying, belong to environmental clean type product.
5）The flatness of CNT graphene, entire surface in itself is all heating face and radiating surface, thus heating is uniform, heat
Amount is easy to transmit, evacuated and heat radiation, and surface temperature can control.
6）Under general voltage（220V）Entire surface is all electron channel, and current density is minimum, is sent out with existing resistance wire
Hot material, the current density degree of infrared lamp are compared, and have no harm to human body, with other materials being combined well, are made various
Conductive exothermal equipment.
7）Graphene has identical crystal structure with CNT, and the full carbon device of composition reduces conventional carbon nanometer
The Schottky barrier constraint that tube device is contacted with metal, in combination with make use of, the good material of CNT and graphene is special
Property and electrology characteristic, electrical conductivity are smaller.
Embodiment
Embodiment 1
It is prepared by electrothermal layer：Expanded graphite is prepared first with graphite oxide, graphite is put into 1000 DEG C of Muffle furnace for 1 part,
Insulation 15min then obtains expanded graphite.Then modification expanded graphite, i.e., be immersed in 0.65 mol/L carbon by expanded graphite
In the aqueous solution of sour ammonium, then the aqueous solution containing 0.32 mol/L iron chloride is added dropwise to containing expanded dropwise under agitation
In the above-mentioned solution of graphite, stirring stands the h of aging 3, filters, drying, 650 DEG C of roasting 45min, wears into fine powder;Finally will
Above-mentioned fine powder is placed in chemical vapor deposition stove, and argon gas is first passed through in stove, and hydrogen is switched to when furnace temperature is up to 540 DEG C, reduction
Iron oxide, 7.6 parts of acetylene are passed through when furnace temperature reaches 820 DEG C again, are reacted 3 hours, are closed hydrogen, are passed through argon gas and drop naturally
Wen Ze obtains graphene carbon nanotube floor heating tiles electrothermal layer sample.
Embodiment 2
It is prepared by electrothermal layer：Expanded graphite is prepared first with graphite oxide, graphite is put into 1000 DEG C of Muffle furnace for 1 part,
Insulation 15min then obtains expanded graphite.Then modification expanded graphite, i.e., be immersed in 0.3 mol/L carbon by expanded graphite
In the aqueous solution of sour ammonium, then the aqueous solution containing 0.52 mol/L iron chloride is added dropwise to containing expanded dropwise under agitation
In the above-mentioned solution of graphite, stirring stands the h of aging 3, filters, drying, 650 DEG C of roasting 45min, wears into fine powder;Finally will
Above-mentioned fine powder is placed in chemical vapor deposition stove, and argon gas is first passed through in stove, and hydrogen is switched to when furnace temperature is up to 540 DEG C, reduction
Iron oxide, 9 parts of acetylene are passed through when furnace temperature reaches 820 DEG C again, are reacted 2 hours, are closed hydrogen, are passed through argon gas Temperature fall
Then obtain graphene carbon nanotube floor heating tiles electrothermal layer sample.
Embodiment 3
It is prepared by electrothermal layer：Expanded graphite is prepared first with graphite oxide, graphite is put into 1000 DEG C of Muffle furnace for 1 part,
Insulation 15min then obtains expanded graphite.Then modification expanded graphite, i.e., be immersed in 0.85 mol/L carbon by expanded graphite
In the aqueous solution of sour ammonium, then the aqueous solution containing 0.15 mol/L iron chloride is added dropwise to containing expanded dropwise under agitation
In the above-mentioned solution of graphite, stirring stands the h of aging 3, filters, drying, 650 DEG C of roasting 45min, wears into fine powder;Finally will
Above-mentioned fine powder is placed in chemical vapor deposition stove, and argon gas is first passed through in stove, and hydrogen is switched to when furnace temperature is up to 540 DEG C, reduction
Iron oxide, 5 parts of acetylene are passed through when furnace temperature reaches 820 DEG C again, are reacted 4 hours, are closed hydrogen, are passed through argon gas Temperature fall
Then obtain graphene carbon nanotube floor heating tiles electrothermal layer sample.
Embodiment 4
A kind of preparation method of electric heating ceramic tile, comprises the following steps： 1）By four side hem strip techniques, on ceramic tile back side periphery
Confining bed is set, the hemi-closure space of one side opening is surrounded jointly with the ceramic tile back side； 2）Surrounded at the ceramic tile back side and confining bed
Hemi-closure space add electrothermal layer；
3）Using polyurethane foam technique, polyurethane is full of hemi-closure space, form heat-insulation layer； 4）It is complete by sand blasting technique
The totally-enclosed hemi-closure space.
Embodiment 5
Experiment（1）
The electrothermal layer that prior art is made（Existing electrothermal layer）With embodiment 1（Electrothermal layer 1 of the present invention）In obtained electrothermal layer
Conductivity is tested, test result such as table 1
Experiment（2）
Floor heating tiles 1 ~ 3 are subjected to energization test, after certain power is added to floor heating tiles, 30 days voltmeters of record and electricity
The numerical value of flow table, time interval is 2 hours, and the relation curve of recording voltage is in good linear relationship, and ohm characteristic is presented,
Raised with voltage, electric current increase.
Experiment（3）
Floor heating tiles 1 ~ 3 are subjected to energization test, electric heating brick 1：Temperature is raised rapidly within 2.8 minutes, and surface temperature reaches 40 within 9 minutes
℃；Electric heating brick 2：Temperature is raised rapidly within 4.3 minutes, and surface temperature reaches 40 DEG C within 15 minutes；Electric heating brick 2：Temperature is rapid within 3.8 minutes
Rise, surface temperature reaches 40 DEG C within 16 minutes.The floor heating tiles prepared with CNT graphene have the characteristic being brought rapidly up.Carbon
The heat of nanotube grapheme material is mainly transmitted with forms of radiation.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, is included within the scope of the present invention.
Claims (8)
1. a kind of CNT graphene floor heating tiles, it is characterised in that the floor heating tiles include electrothermal layer, the composition of the electrothermal layer
Material includes：CNT, graphene, ammonium carbonate, iron chloride.
2. a kind of CNT graphene floor heating tiles according to claim 2, it is characterised in that the CNT and stone
The mol ratio of black alkene is 5 ~ 9.
3. a kind of CNT graphene floor heating tiles according to claim 2, it is characterised in that the CNT and stone
The mol ratio of black alkene is 7.6.
4. a kind of CNT graphene floor heating tiles according to claim 1, it is characterised in that the electrothermal layer by
Following steps are prepared from, and graphite is put into Muffle furnace and expanded graphite is made by a.;B. expanded graphite is modified;C. by step b
Graphite be placed in chemical vapor deposition stove utilize chemical vapor deposition method deposition of carbon nanotubes on expanded graphite, be made electricity
Thermosphere.
5. a kind of CNT graphene floor heating tiles according to claim 4, it is characterised in that the step b. is repaiied
It is that expanded graphite is immersed in 0.3 ~ 0.85 ammonium carbonate solution to adorn expanded graphite detailed process, then under agitation will
The aqueous solution containing 0.15 ~ 0.52 mol/L iron chloride is added dropwise in the above-mentioned solution containing expanded graphite dropwise, and stirring stands old
Change 3 h, filter, drying, 650 DEG C of roasting 45min wear into fine powder.
6. a kind of CNT graphene floor heating tiles according to claim 5, it is characterised in that the ammonium carbonate is water-soluble
Liquid concentration is 0.65mol/L.
7. a kind of CNT graphene floor heating tiles according to claim 5, it is characterised in that the iron chloride is water-soluble
Liquid concentration is 0.32mol/L.
8. a kind of CNT graphene floor heating tiles according to claim 1, it is characterised in that the floor heating tiles also include
Heat-insulation layer, its material is foaming mixed mud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710381221.1A CN107101254A (en) | 2017-05-25 | 2017-05-25 | A kind of CNT graphene floor heating tiles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710381221.1A CN107101254A (en) | 2017-05-25 | 2017-05-25 | A kind of CNT graphene floor heating tiles |
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| Publication Number | Publication Date |
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| CN107101254A true CN107101254A (en) | 2017-08-29 |
Family
ID=59668990
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710381221.1A Pending CN107101254A (en) | 2017-05-25 | 2017-05-25 | A kind of CNT graphene floor heating tiles |
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