CN112043135B - Multistage infrared radiation tea seat - Google Patents
Multistage infrared radiation tea seat Download PDFInfo
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- CN112043135B CN112043135B CN202010837289.8A CN202010837289A CN112043135B CN 112043135 B CN112043135 B CN 112043135B CN 202010837289 A CN202010837289 A CN 202010837289A CN 112043135 B CN112043135 B CN 112043135B
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- 241001122767 Theaceae Species 0.000 title claims abstract description 63
- 230000005855 radiation Effects 0.000 title abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 119
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 70
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 69
- 239000011248 coating agent Substances 0.000 claims abstract description 39
- 238000000576 coating method Methods 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 31
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 239000011888 foil Substances 0.000 claims abstract description 11
- 229920000642 polymer Polymers 0.000 claims abstract description 10
- 239000003973 paint Substances 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims description 12
- -1 benzoic acid peroxide Chemical class 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 239000003431 cross linking reagent Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 150000002978 peroxides Chemical class 0.000 claims description 4
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 4
- 238000006722 reduction reaction Methods 0.000 claims description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 4
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 claims description 3
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 3
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- 239000010426 asphalt Substances 0.000 claims description 3
- 239000010433 feldspar Substances 0.000 claims description 3
- 239000002223 garnet Substances 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 239000005711 Benzoic acid Substances 0.000 claims description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N Benzoic acid Natural products OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 2
- 229910021536 Zeolite Inorganic materials 0.000 claims description 2
- 235000010233 benzoic acid Nutrition 0.000 claims description 2
- 238000005119 centrifugation Methods 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims description 2
- 238000000707 layer-by-layer assembly Methods 0.000 claims description 2
- 239000010457 zeolite Substances 0.000 claims description 2
- 238000004321 preservation Methods 0.000 abstract description 9
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical class [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 abstract 1
- 230000015271 coagulation Effects 0.000 abstract 1
- 238000005345 coagulation Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000010954 inorganic particle Substances 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 150000003384 small molecules Chemical class 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 6
- 238000001069 Raman spectroscopy Methods 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 239000002052 molecular layer Substances 0.000 description 4
- 239000011858 nanopowder Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 241000282414 Homo sapiens Species 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004005 microsphere Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 239000002120 nanofilm Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- XCRBXWCUXJNEFX-UHFFFAOYSA-N peroxybenzoic acid Chemical compound OOC(=O)C1=CC=CC=C1 XCRBXWCUXJNEFX-UHFFFAOYSA-N 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G23/00—Other table equipment
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G29/00—Supports, holders, or containers for household use, not provided for in groups A47G1/00-A47G27/00 or A47G33/00
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/24—Warming devices
- A47J36/26—Devices for warming vessels containing drinks or food, especially by means of burners Warming devices with a burner, e.g. using gasoline; Travelling cookers, e.g. using petroleum or gasoline with one burner
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Food Science & Technology (AREA)
- Carbon And Carbon Compounds (AREA)
- Resistance Heating (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a multistage infrared heating tea base which comprises a conductive heating material and an insulating heat-conducting coating, wherein the insulating heat-conducting coating is sprayed on the surface of the conductive heating material; the conductive heating material is composed of conductive metal foil or high-conductivity graphene paint; the insulating heat-conducting coating takes a polysilicate layer as a bottom insulating layer, a silicon carbide layer as an intermediate layer and an insulating layer, a graphitizable polymer layer as an upper layer and a rivet fixing layer, and the spherical graphene penetrates through the three-layer structure. The infrared tea base realizes multistage one-way infrared heating by utilizing the corrugated structure of spherical graphene under the action of the coagulation and combination of high molecules and the insulation of insulating aluminum-silicon compounds and the coordination of small-molecule high-radiation inorganic particles. The infrared tea seat greatly improves the heating efficiency, and simultaneously can greatly reduce the energy consumption through radiation heating and heat preservation.
Description
Technical Field
The invention belongs to the technical field of infrared heating, and particularly relates to a multistage infrared radiation tea base and a preparation method thereof.
Background
Along with the development of society, the dependence of human beings on energy is higher and higher, but along with the gradual consumption of fossil energy, the cost of energy is higher and higher, and for this reason, the more efficient utilization of energy in human life production activities is urgent. Meanwhile, the quality requirements of people on production and life are higher and higher, and under the same heating target condition, the energy conservation becomes the first choice.
At present, in life, the electric heating equipment for the tea seat is mainly used for conducting heating by electrifying and heating metal electrodes, so that the electric power consumption is huge and the heating range is small; meanwhile, the infrared radiation wavelength is short, and the human body comfort is poor.
The interface heating is mainly surface heating of high radiation materials, such as pure silicon carbide, carbon tubes, etc. But the emissivity has reached the conventional heating limit (infrared emissivity 95%). To further enhance heating, the heating principle of heat conduction and convection, etc. must be introduced and well applied.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a multistage infrared radiation tea base which has a multistage heating structure, realizes infrared radiation heating by reasonably designing a material stacking structure of an insulating heat-conducting coating, provides a feasible scheme for reducing the temperature of an interface material, and can simultaneously realize the advantages of high energy conversion efficiency, rapid large-area heating, energy conservation, heat preservation and the like by spraying the infrared radiation tea base on the surface of a conductive heating material.
The purpose of the invention is realized by the following technical scheme: a multistage infrared heating tea base comprises a conductive heating material and an insulating heat conduction coating, wherein the insulating heat conduction coating is sprayed on the surface of the conductive heating material; the conductive heating material is composed of conductive metal foil or high-conductivity graphene paint; the insulating heat-conducting coating uses a polysilicate layer as a bottom insulating layer, a silicon carbide layer as an intermediate layer and an insulating layer, a graphitizable polymer layer as an upper layer and a rivet fixing layer, and spherical graphene penetrates through the three-layer structure. The size of the spherical graphene is 1-3 mu m, and the total thickness of a three-layer structure consisting of a bottom layer, a middle layer and an upper layer does not exceed 1/5 of the size of the spherical graphene; the thickness of the upper layer is less than 1/20 of the total thickness of the three-layer structure. The insulating heat-conducting coating forms a layer-by-layer assembly structure in a centrifugal spraying mode.
Further, the graphitizable polymer layer is composed of graphitizable polymer, and the graphitizable polymer is selected from polyimide, asphalt or polyacrylonitrile with a molecular weight of 2000-10000.
Further, the polysilicate layer is feldspar (K)2O·Al2O3·6SiO2) Layer, mica (K)2O·2Al2O3·6SiO2·2H2O) layer, Kaolin (Al)2O3·2SiO2·22H2O) layer, zeolite (Na)2O·Al2O3·3SiO2·22H2O) layer or garnet (3 CaO. Al)2O3·3SiO2) And (3) a layer.
Furthermore, the silicon carbide layer is composed of hyperbranched carbosilane, the molecular weight of the hyperbranched carbosilane is less than 10000, and the branching degree is 1.2-1.4.
Further, the preparation method of the multistage infrared heating tea base comprises the following steps: uniformly mixing 1 part by weight of spherical graphene, 0.05-0.1 part by weight of graphitizable high-molecular oligomer, 0.5-1.6 parts by weight of polyaluminosilicate, 1-2 parts by weight of hyperbranched carbosilane and 0.01-0.06 part by weight of peroxide cross-linking agent, centrifugally spraying on the surface of a conductive heating material, and carrying out heating setting after ultraviolet curing to obtain the multistage infrared heating tea base. The temperature of the ultraviolet curing is 60-120 ℃, and the time is 1-6 h.
Further, the peroxide crosslinking agents include, but are not limited to: dicumyl peroxide, methyl ethyl ketone peroxide, benzoic acid peroxide and 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane.
Further, the spherical graphene is prepared by spraying graphene oxide solution with the concentration of 0.1-1 mg/mL and through chemical reduction and 1600-2000 ℃ thermal reduction, wherein I of the spherical graphene isD/IGThe value is not higher than 0.05 and the wall thickness is less than 4 atomic layers.
Further, the centrifugal force of the centrifugation is in the range of 2000-10000 rcf.
Further, the specific method for heat setting is as follows: at the temperature of 0-250 ℃, the temperature rising speed is less than 5 ℃/min, and the temperature is controlled and preserved for 1-2 h; then heating to 500 ℃, wherein the heating speed is less than 5 ℃/min, and keeping the temperature for 1-2 h; then the temperature is quickly raised to 1300 ℃, the temperature raising speed is higher than 50 ℃/min, and the temperature is controlled for 1-5 min.
Compared with the prior art, the invention has the following beneficial effects: firstly, the invention realizes the layer-by-layer directional assembly of the insulating heat-conducting coating material by a centrifugal spraying mode according to different material densities, and finally realizes the infrared radiation heating; secondly, the polyaluminosilicate layer plays a role in isolating the conductive heating material, so that the conductive heating material is protected, the external damage and electric leakage are isolated, and the safety is enhanced; on the other hand, heat is transferred to the high-emissivity silicon carbide layer. The silicon carbide layer plays an insulating role to protect the conductive heating material, and on the other hand, the silicon carbide layer quickly radiates heat to the outside in a radiation mode. The graphitizable high molecular layer is a carbonizable nano film actually, and the spherical graphene and the silicon carbide are linked to play a role of a rivet; spherical graphene has three functions: firstly, heat is guided out from an interface to spherical graphene with a high specific surface area, secondly, the spherical graphene has high radiance and can radiate heat quickly and efficiently, the radiation effect of silicon carbide is greatly enhanced, thirdly, the surface of the spherical graphene has a small number of defect state structures, and moreover, the temperature gradient of the surface of a heating material is enhanced by an external suspension structure, so that the spherical graphene can have a good heat convection effect with gas, and the heating effect of the material interface is further enhanced. In addition, the materials such as the high-temperature repaired graphene microspheres have excellent air oxidation resistance and can work for a long time at full power within 500 ℃, so that the high-temperature repaired graphene microspheres have good stability.
Due to the thickness design of the graphene balls and the three-layer structure, the thermal resistance effect of the interface layer is weakened as much as possible, the position of the graphene balls as a heat dissipation main body is increased, and the radiation, convection and heat conduction effects are improved. The upper layer is less than 1/20 a thick to the total thickness and does not have excessive thermal resistance effect on the silicon carbide radiating layer while functioning as a rivet. Therefore, the infrared radiation heating tea seat has the characteristics of energy conservation, high radiation and uniform heat dissipation. Meanwhile, the tea seat has good radiation heating uniformity and high heating efficiency, can uniformly heat the teapot by using less heat, and can be integrated into an intelligent home system.
The tea holder is particularly suitable for teapots (except for silver, silicon oxide nanoparticles, etc.) whose outer walls are coated with a light-absorbing layer and an infrared reflecting layer. The light absorption layer can absorb infrared light which cannot be absorbed by water into the light absorption layer, and is matched with the light reflection layer to restrain infrared energy in the teapot, so that a good heat preservation effect is achieved.
Detailed Description
In order that the objects and effects of the invention will become more apparent, the invention will be further described with reference to specific examples.
Example 1
The invention provides a multistage infrared heating tea base which is composed of a conductive heating material and an insulating heat-conducting coating; the conductive heating material is composed of a conductive metal foil; the preparation method of the multistage infrared heating tea base comprises the following specific steps:
(1) carrying out spray treatment on a graphene oxide solution with the concentration of 0.1mg/mL at 200 ℃, reducing the graphene oxide solution at 80 ℃ for 8h through HI, and then heating the graphene oxide solution at 1600 ℃ for 6h to prepare the spherical graphene.
Scanning electron microscope detection proves that the spherical graphene is finally obtained, and Raman detection detects that the spherical graphene has the structure ID/IGThe value is 0.04 and its scale is 1 μm, with a spherical graphene wall thickness of 2 atomic layers.
(2) Uniformly mixing 1 part by weight of spherical graphene, 0.05 part by weight of polyimide with molecular weight of 2000, 0.5 part by weight of feldspar nanopowder, 1 part by weight of hyperbranched carbosilane with molecular weight of 9800 and branching degree of 1.2 and 0.01 part by weight of dicumyl peroxide to obtain the mixed coating.
(3) And (3) centrifugally spraying the mixed coating obtained in the step (2) on the surface of the conductive metal foil, setting the centrifugal force to be 2000rcf, and simultaneously carrying out ultraviolet curing at the temperature of 60 ℃ for 6 h.
(4) Then adopting a microwave heating and shaping process, namely controlling the temperature to be kept for 1h at 250 ℃ and at the temperature rising speed of 4 ℃/min; then heating to 500 ℃, wherein the heating speed is 3 ℃/min, and keeping the temperature for 1 h; and then heating to 1300 ℃, wherein the heating speed is 60 ℃/min, and the temperature is controlled for 1min, so as to obtain the multistage infrared heating tea base.
The multistage infrared heating tea base prepared by the method has the structure that: the conductive metal foil is used as a conductive layer, and the polysilicate layer is used as an insulating layer and a heat input layer of a bottom layer; the silicon carbide layer is used as an insulating layer and an infrared radiation layer of the middle layer and is a main radiation layer, the rough surface area and the high radiation rate (95%) are added, and the radiation heating efficiency is greatly improved; the polymer layer is used as an upper layer for linking silicon carbide and spherical graphene, and the thickness of the polymer layer is 4% of that of a three-layer structure consisting of a bottom layer, a middle layer and the upper layer; spherical graphite alkene runs through three layer construction and regards as outer radiation layer, and three layer construction's thickness is 20% of spherical graphite alkene thickness, and spherical graphite alkene's specific surface is huge, and the radiance reaches up to 98%, has greatly improved infrared radiation heating, and high specific surface defect state graphite alkene has fabulous heat-conduction effect simultaneously, can form splendid thermal convection interface with external gas, the reinforcing heating.
Heating the multistage infrared radiation tea stand to a kettle of 1L by a thermal imager, heating at full power for about 1 minute, and raising the water temperature to 100 ℃; and after the same time is consumed by the tea seat without the insulating heat-conducting coating, the water temperature is only 85 ℃. In addition, the heat preservation time of the tea base with the insulating heat-conducting coating is about 3 times that of the tea base without the insulating heat-conducting coating when the same power is input. Therefore, the multistage infrared radiation tea seat can be widely applied to low-power-consumption smart homes.
Example 2
The invention provides a multistage infrared heating tea base which is composed of a conductive heating material and an insulating heat-conducting coating; the conductive heating material is composed of high-conductivity graphene paint; the preparation method of the multistage infrared heating tea base comprises the following specific steps:
(1) carrying out spray treatment on a graphene oxide solution with the concentration of 1mg/mL at 180 ℃, reducing the graphene oxide solution at 100 ℃ for 2h through HI, and then heating the graphene oxide solution at 1800 ℃ for 1min to prepare the spherical graphene.
SEM detection proves that spherical high-fold graphene is finally obtained, and Raman detection proves that I of the spherical grapheneD/IGThe value is 0.05 and its scale is 3 μm, with a spherical graphene wall thickness of 3 atomic layers.
(2) Uniformly mixing 1 part by weight of spherical graphene, 0.1 part by weight of asphalt with the molecular weight of 10000, 1.6 parts by weight of mica nano powder, 2 parts by weight of hyperbranched carbosilane with the molecular weight of 8000 and the branching degree of 1.4 and 0.06 part by weight of peroxybenzoic acid to obtain the mixed coating.
(3) And (3) centrifugally spraying the mixed coating obtained in the step (2) on the surface of the high-conductivity graphene coating, setting the centrifugal force to be 10000rcf, and simultaneously carrying out ultraviolet curing at the temperature of 120 ℃ for 3 h.
(4) And then adopting a high-temperature heating and shaping process: at the temperature of 0 ℃, the heating rate is 4 ℃/min, and the temperature is controlled to be kept for 2 h; then heating to 500 ℃, wherein the heating speed is 3 ℃/min, and keeping the temperature for 2 h; and then heating to 1300 ℃, wherein the heating speed is 51 ℃/min, and the temperature is controlled for 5min, so as to obtain the multistage infrared heating tea base.
The multistage infrared heating tea seat takes the conductive metal foil as a conductive layer, takes the polysilicate layer as a bottom insulating layer, takes the silicon carbide layer as a middle layer and an insulating layer, takes the graphitizable high molecular layer as an upper layer and a rivet fixing layer, and spherical graphene penetrates through the three-layer structure. The total thickness of a three-layer structure consisting of the bottom layer, the middle layer and the upper layer is 18% of the size of the spherical graphene; the thickness of the upper layer is 4% of the total thickness of the three-layer structure.
Heating the multistage infrared radiation tea stand to a kettle of 1L by a thermal imager, heating at full power for about 1 minute, and raising the water temperature to 100 ℃; and the water temperature of the tea base without the insulating heat-conducting coating is only 85 ℃ after the same time consumption. In addition, the same power is input, and the heat preservation time of the tea base with the insulating heat-conducting coating is about 3 times of that of the tea base without the insulating heat-conducting coating. Therefore, the multistage infrared radiation tea seat can be widely applied to low-power-consumption smart homes.
Example 3
The invention provides a multistage infrared heating tea base which is composed of a conductive heating material and an insulating heat-conducting coating; the conductive heating material is composed of high-conductivity graphene paint; the preparation method of the multistage infrared heating tea base comprises the following specific steps:
(1) carrying out spray treatment on graphene oxide with the concentration of 0.1mg/mL at 220 ℃, reducing the graphene oxide with HI at 90 ℃ for 4h, and then heating the graphene oxide at 2000 ℃ for 4h to prepare the spherical graphene.
SEM detection proves that multi-fold spherical graphene is finally obtained, and Raman detection proves that I of the spherical grapheneD/IGThe value is 0.01 and its scale is 1 μm, with a spherical graphene wall thickness of 3 atomic layers.
(2) Uniformly mixing 1 part by weight of spherical graphene, 0.08 part by weight of polyacrylonitrile with the molecular weight of 10000, 1.2 parts by weight of kaolin nano powder, 1.2 parts by weight of hyperbranched carbosilane with the molecular weight of 8000 and the branching degree of 1.4 and 0.02 part by weight of 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane to obtain the mixed coating.
(3) And (3) centrifugally spraying the mixed coating obtained in the step (2) on the surface of the high-conductivity graphene coating, setting the centrifugal force to be 4000rcf, and simultaneously carrying out ultraviolet curing at the temperature of 120 ℃ for 1 h.
(4) And then adopting a high-temperature heating and shaping process: at 250 ℃, the temperature rising speed is 2 ℃/min, and the heat preservation is controlled for 1 h; then heating to 500 ℃, wherein the heating speed is 4.5 ℃/min, and keeping the temperature for 2 hours; and then heating to 1300 ℃, wherein the heating speed is 55 ℃/min, and the temperature is controlled for 1min, so as to obtain the multistage infrared heating tea base.
The multistage infrared heating tea seat takes the conductive metal foil as a conductive layer, takes the polysilicate layer as a bottom insulating layer, takes the silicon carbide layer as a middle layer and an insulating layer, takes the graphitizable high molecular layer as an upper layer and a rivet fixing layer, and spherical graphene penetrates through the three-layer structure. The total thickness of a three-layer structure consisting of the bottom layer, the middle layer and the upper layer is 18% of the size of the spherical graphene; the thickness of the upper layer is 3% of the total thickness of the three-layer structure.
Heating the multistage infrared radiation tea stand to a kettle of 1L by a thermal imager, heating at full power for about 1 minute, and raising the water temperature to 100 ℃; and the water temperature of the tea base without the insulating heat-conducting coating is only 85 ℃ after the same time consumption. In addition, the heat preservation time of the tea base with the insulating heat-conducting coating is about 3 times that of the tea base without the insulating heat-conducting coating when the same power is input. Therefore, the multistage infrared radiation tea seat can be widely applied to low-power-consumption smart homes.
Example 4
The invention provides a multistage infrared heating tea base which is composed of a conductive heating material and an insulating heat-conducting coating; the conductive heating material is composed of a conductive metal foil; the preparation method of the multistage infrared heating tea base comprises the following specific steps:
(1) carrying out spray treatment on graphene oxide with the concentration of 0.4mg/mL at 300 ℃, reducing the graphene oxide with HI at 90 ℃ for 5h, and heating the graphene oxide at 1800 ℃ for 3h to prepare the spherical graphene.
SEM detection proves that multi-fold spherical graphene is finally obtained, and Raman detection proves that I of the spherical grapheneD/IGThe value is 0.03 and its scale is 2 μm, with a spherical graphene wall thickness of 3-4 atomic layers.
(2) Uniformly mixing 1 part by weight of spherical graphene, 0.06 part by weight of polyacrylonitrile with the molecular weight of 5000, 1 part by weight of garnet nano powder, 1.6 parts by weight of hyperbranched carbosilane with the molecular weight of 8000 and the branching degree of 1.3 and 0.06 part by weight of methyl ethyl ketone peroxide to obtain the mixed coating.
(3) And (3) centrifugally spraying the mixed coating obtained in the step (2) on the surface of the conductive metal foil, setting the centrifugal force to be 6000rcf, and simultaneously carrying out ultraviolet curing at the temperature of 80 ℃ for 4 h.
(4) And then adopting a high-temperature heating and shaping process: at 250 ℃, the temperature rising speed is 4 ℃/min, and the heat preservation is controlled for 1 h; then heating to 500 ℃, wherein the heating speed is 3 ℃/min, and keeping the temperature for 1 h; and then heating to 1300 ℃, wherein the heating speed is 55 ℃/min, and keeping the temperature for 1h to obtain the multistage infrared heating tea base.
The multistage infrared heating tea seat takes the conductive metal foil as a conductive layer, takes the polysilicate layer as a bottom insulating layer, takes the silicon carbide layer as a middle layer and an insulating layer, takes the graphitizable high molecular layer as an upper layer and a rivet fixing layer, and spherical graphene penetrates through the three-layer structure. The total thickness of a three-layer structure consisting of the bottom layer, the middle layer and the upper layer is 16% of the size of the spherical graphene; the thickness of the upper layer is 4% of the total thickness of the three-layer structure.
Heating the multistage infrared radiation tea stand to a kettle of 1L by a thermal imager, heating at full power for about 1 minute, and raising the water temperature to 100 ℃; and the water temperature of the tea base without the insulating heat-conducting coating is only 85 ℃ after the same time consumption. In addition, the heat preservation time of the tea base with the insulating heat-conducting coating is about 3 times that of the tea base without the insulating heat-conducting coating when the same power is input. Therefore, the multistage infrared radiation tea seat can be widely applied to low-power-consumption smart homes.
Claims (9)
1. The multistage infrared heating tea base is characterized in that the infrared heating tea base is composed of a conductive heating material and an insulating heat-conducting coating, and the insulating heat-conducting coating is sprayed on the surface of the conductive heating material; the conductive heating material is composed of conductive metal foil or high-conductivity graphene paint; the insulating heat-conducting coating takes a polysilicate layer as a bottom insulating layer, a silicon carbide layer as an intermediate layer and an insulating layer, a graphitizable polymer layer as an upper layer and a rivet fixing layer, and spherical graphene penetrates through the three-layer structure; the size of the spherical graphene is 1-3 mu m, and the total thickness of a three-layer structure consisting of a bottom layer, a middle layer and an upper layer does not exceed 1/5 of the size of the spherical graphene; the thickness of the upper layer is less than 1/20 of the total thickness of the three-layer structure; the insulating heat-conducting coating forms a layer-by-layer assembly structure in a centrifugal spraying mode.
2. The multi-stage infrared heating tea seat as claimed in claim 1, wherein the graphitizable polymer layer is made of graphitizable polymer selected from polyimide, asphalt, or polyacrylonitrile with molecular weight of 2000-10000.
3. The multi-stage infrared heating tea tray as claimed in claim 1, wherein the polysilicate layer is feldspar (K)2O·Al2O3·6SiO2) Layer, mica (K)2O·2Al2O3·6SiO2·2H2O) layer, Kaolin (Al)2O3·2SiO2·22H2O) layer, zeolite (Na)2O·Al2O3·3SiO2·22H2O) layer or garnet (3 CaO. Al)2O3·3SiO2) And (3) a layer.
4. The multistage infrared heating tea stand of claim 1, wherein the silicon carbide layer is composed of hyperbranched carbosilane, the molecular weight of the hyperbranched carbosilane is less than 10000, and the branching degree is 1.2-1.4.
5. The multistage infrared heating tea base as claimed in claim 1, wherein the multistage infrared heating tea base is prepared by a method comprising the following steps: uniformly mixing 1 part by weight of spherical graphene, 0.05-0.1 part by weight of graphitizable high-molecular oligomer, 0.5-1.6 parts by weight of polyaluminosilicate, 1-2 parts by weight of hyperbranched carbosilane and 0.01-0.06 part by weight of peroxide cross-linking agent, centrifugally spraying on the surface of a conductive heating material, and carrying out heating setting after ultraviolet curing to obtain a multistage infrared heating tea base; the temperature of the ultraviolet curing is 60-120 ℃, and the time is 1-6 h.
6. The multi-stage infrared heated tea stand of claim 5 wherein the peroxide crosslinking agent comprises dicumyl peroxide, methyl ethyl ketone peroxide, benzoic acid peroxide, 2, 5-dimethyl-2, 5 bis (t-butylperoxy) hexane.
7. The multistage infrared heating tea seat as claimed in claim 5, wherein the spherical graphene is prepared by spraying graphene oxide solution with concentration of 0.1mg/mL-1mg/mL, and performing chemical reduction and 1600-2000 ℃ thermal reduction, wherein I of the spherical graphene isD/IGThe value is not higher than 0.05 and the wall thickness is less than 4 atomic layers.
8. The multistage infrared heating tea seat as claimed in claim 5, wherein the centrifugal force of the centrifugation is in the range of 2000-10000 rcf.
9. The multistage infrared heating tea base as claimed in claim 5, wherein the specific method for heating and shaping is as follows: at the temperature of 0-250 ℃, the temperature rising speed is less than 5 ℃/min, and the temperature is controlled and preserved for 1-2 h; then heating to 500 ℃, wherein the heating speed is less than 5 ℃/min, and keeping the temperature for 1-2 h; then the temperature is quickly raised to 1300 ℃, the temperature raising speed is higher than 50 ℃/min, and the temperature is controlled for 1-5 min.
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