CN109673067A - A kind of Metal Substrate graphene high temperature resistant far-infrared heating tube and preparation method thereof, heat-resisting material - Google Patents
A kind of Metal Substrate graphene high temperature resistant far-infrared heating tube and preparation method thereof, heat-resisting material Download PDFInfo
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- CN109673067A CN109673067A CN201811572485.6A CN201811572485A CN109673067A CN 109673067 A CN109673067 A CN 109673067A CN 201811572485 A CN201811572485 A CN 201811572485A CN 109673067 A CN109673067 A CN 109673067A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 90
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 47
- 239000002184 metal Substances 0.000 title claims abstract description 45
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 45
- 239000000758 substrate Substances 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 title claims abstract description 12
- 229920001721 polyimide Polymers 0.000 claims abstract description 36
- 239000004642 Polyimide Substances 0.000 claims abstract description 35
- 238000009413 insulation Methods 0.000 claims abstract description 35
- 239000005439 thermosphere Substances 0.000 claims abstract description 26
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 18
- 239000010439 graphite Substances 0.000 claims abstract description 18
- -1 graphite alkene Chemical class 0.000 claims abstract description 18
- 239000011159 matrix material Substances 0.000 claims abstract description 16
- 230000005855 radiation Effects 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims description 43
- 238000010792 warming Methods 0.000 claims description 38
- 239000002002 slurry Substances 0.000 claims description 18
- 230000017525 heat dissipation Effects 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 2
- 238000000338 in vitro Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000010410 layer Substances 0.000 description 47
- 150000001336 alkenes Chemical class 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000011268 mixed slurry Substances 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910052582 BN Inorganic materials 0.000 description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000002346 layers by function Substances 0.000 description 2
- 239000002135 nanosheet Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- DIOZVWSHACHNRT-UHFFFAOYSA-N 2-(2-prop-2-enoxyethoxy)ethanol Chemical compound OCCOCCOCC=C DIOZVWSHACHNRT-UHFFFAOYSA-N 0.000 description 1
- 239000010963 304 stainless steel Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical class [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000004965 Silica aerogel Substances 0.000 description 1
- 239000003708 ampul Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002134 carbon nanofiber Substances 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating 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—Heating 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
-
- 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
- H05B3/02—Details
Landscapes
- Resistance Heating (AREA)
- Laminated Bodies (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The present invention relates to a kind of Metal Substrate graphene high temperature resistant far-infrared heating tubes and preparation method thereof, heat-resisting material.The heating tube includes metal tube matrix, high-temperature insulation heat dissipating layer and high temperature resistant Far infrared electric thermosphere are disposed on the outer peripheral surface of the metal tube matrix from inside to outside, high-temperature insulation heat dissipating layer is (30-32) by mass ratio: the polyimides and white graphite alkene of (3-16) form, and high temperature resistant Far infrared electric thermosphere is (30-32) by mass ratio: the polyimides and graphene of (3-21) form.Metal Substrate graphene high temperature resistant far-infrared heating tube provided by the invention is when in use, high temperature resistant Far infrared electric thermosphere heating power, heat flows through the media such as water or oil in heating tube by heat transfer and the heating of infra-red radiation two ways, reduce the thermal loss because caused by heat transfer is unsmooth, improves the thermal efficiency.
Description
Technical field
The invention belongs to heating tube fields, and in particular to a kind of Metal Substrate graphene high temperature resistant far-infrared heating tube and its system
Preparation Method, heat-resisting material.
Background technique
Heating tube is the device that thermal energy is converted to electric energy.There are many mode for converting electrical energy into thermal energy at present, press
According to the difference of technical principle, there are Far-infrared Heating, semiconductor heating, PTC heating, heated by electrothermal film, electromagnetic heating, microwave to add
Heat, there are also silicon nitride heating etc..In modern household appliances, the heating of especially widely applied in water heater or conventional tube
The heating tube of structure.
Traditional heating tube is immerging metal tube heater or quartz heating-pipe, and tube wall uses metal or quartz, and heating wire uses nickel
Evanohm or Aludirome are then filled between heating wire and tube wall with modified magnesia powder, and heating wire is in energization feelings
The heat generated under condition is transferred to metal pipe-wall by filler, and then heats the media such as water or oil；Traditional immerging metal tube heater
Although advantage is very outstanding, the appearance of unavoidable scale problems when in use is easy in use process to bring electric leakage, leakage
The hidden danger of water；Traditional quartz heating-pipe can be avoided the appearance of scale formation by the way of electricity separation, but quartz ampoule
Heating conduction is poor, therefore the waste of thermal energy is be easy to cause during heating, while extremely cold very hot and by mechanical force
In the case where be easy to burst.
Publication No. is that the Chinese patent application of CN108507151A discloses a kind of infrared heating water heater, and water heater includes
Cylinder includes the first insulating layer, second insulating layer, infra-red radiation hair with the intracorporal infrared heating plate of cylinder, infrared heating plate is set to
Generating layer, insulating layer are polyethylene terephthalate layer, ethylene-vinyl acetate copolymer layer, poly bis allyl diglycol
One of basis, silastic-layer and polyimide resin layer, it is silica aerogel layer, micro-nano graphite powder that layer, which occurs, for infra-red radiation
One of body layer, carbon nano-fiber layer, carbon nanotube layer and graphene layer.Infrared heating plate is powered when use, infrared heating
Layer occurs for infra-red radiation in piece generate infra-red radiation and flowed through the water of infrared heating plate to absorb, and water is made to heat up.This is infrared
Heating sheet after electrified regulation, lead since heat-conductive characteristic difference unavoidably has certain endothermic thermal event by the insulating layer of surrounding
The thermal efficiency of the heating structure is caused still to need to be further increased.
Summary of the invention
The purpose of the present invention is to provide a kind of Metal Substrate graphene high temperature resistant far-infrared heating tubes, to solve existing heating
The lower problem of the thermal efficiency of structure.
Second object of the present invention is to provide a kind of preparation side of Metal Substrate graphene high temperature resistant far-infrared heating tube
Method, the thermal efficiency to solve the problems, such as existing heating structure are lower.
Third object of the present invention is to provide a kind of heat-resisting material, resistance to during heating to solve current material
The problem of high-temperature behavior difference.
To achieve the above object, the technical solution of Metal Substrate graphene high temperature resistant far-infrared heating tube of the invention is:
A kind of Metal Substrate graphene high temperature resistant far-infrared heating tube, including metal tube matrix, the metal tube matrix it is outer
High-temperature insulation heat dissipating layer and high temperature resistant Far infrared electric thermosphere, high-temperature insulation heat dissipating layer are disposed on circumferential surface from inside to outside
Be (30-32) by mass ratio: the polyimides and white graphite alkene of (3-16) form, and high temperature resistant Far infrared electric thermosphere is by mass ratio
(30-32): polyimides and the graphene composition of (3-21).
Metal Substrate graphene high temperature resistant far-infrared heating tube provided by the invention, metal tube matrix ensure that prolonging for heating tube
Malleability and mechanical resistant, thermal shock ability, high-temperature insulation heat dissipating layer provide good insulating properties and capacity of heat transmission, high temperature resistant
Far infrared electric thermosphere provides good heating efficiency and heating rate；In use, high temperature resistant Far infrared electric thermosphere heating power,
Heat flows through the media such as water or oil in heating tube by heat transfer and the heating of infra-red radiation two ways, reduces because of heat transfer
Thermal loss caused by unsmooth, improves the thermal efficiency.
From the mechanical performance and heat transfer property of metal tube matrix, in price comprehensively consider, it is preferred that the metal base
Body is stainless steel or copper.
For heating efficiency and the heating rate for further increasing high temperature resistant Far infrared electric thermosphere, the mechanicalness of electrothermal layer is improved
Can and the binding performance with high-temperature insulation heat dissipating layer, it is preferred that the high temperature resistant Far infrared electric thermosphere with a thickness of 18-26 μ
m。
For the insulating properties and capacity of heat transmission for further increasing high-temperature insulation heat dissipating layer, the machinery of heat dissipating layer is combined
Performance and binding performance with metal tube matrix, high temperature resistant Far infrared electric thermosphere, it is preferred that the high-temperature insulation heat dissipating layer
With a thickness of 18-24 μm.
Technical solution used by the preparation method of Metal Substrate graphene high temperature resistant far-infrared heating tube of the invention is:
A kind of preparation method of Metal Substrate graphene high temperature resistant far-infrared heating tube, comprising the following steps:
1) polyimide solution and white graphite alkene are uniformly mixed, high-temperature insulation heat dissipation slurry is made；By polyimides
Solution and graphene are uniformly mixed, and high temperature resistant far-infrared electric slurry is made；
2) high-temperature insulation heat dissipation slurry is coated in vitro in metal base, it is dry, form high-temperature insulation heat dissipating layer；Resistance to
High temperature resistant far-infrared electric slurry is coated outside high-temperature insulation heat dissipating layer, it is dry, formed high temperature resistant Far infrared electric thermosphere to get.
The preparation method of Metal Substrate graphene high temperature resistant far-infrared heating tube provided by the invention, preparation process is simple, institute
Obtain the safety that heating tube is non-breakable, when can guarantee installation and use, long service life；The preparation method can be abundant
Under the premise of guaranteeing safety in utilization, the fouling of heating tube is reduced, improves heating efficiency and thermal energy conduction efficiency, improves thermal energy benefit
With rate.
For the mixing quality for improving polyimide solution and graphene or white graphite alkene, uniform mixed serum is prepared, it is excellent
Choosing, in step 1), the mass fraction of the polyimide solution is 15-20%.To further increase high-temperature insulation heat dissipation
The mixing quality of slurry, high temperature resistant far-infrared electric slurry, prepares the coat of good homogeneity, it is preferred that in step 1), institute
It states and is uniformly mixed including being successively stirred mixing and ground and mixed, the revolving speed of the ground and mixed is 200-300r/min, when
Between be 5-20min.
Drying process can make solvent volatilization completely, and freeze-day with constant temperature or gradient increased temperature drying means can be used, to promote
The good coating layer of uniformity consistency is consolidated into polyimide solution and white graphite alkene or graphene, it is preferred that step 2)
In, the drying is to be warming up to 180-220 DEG C of drying 50-70min in 80-160 DEG C of drying 100-120min, be warming up to 250-
300 DEG C of drying 50-70min.
Technical solution used by heat-resisting material of the invention is:
A kind of heat-resisting material is grouped as by the group of following parts by weight: 30-32 parts of polyimides, graphene or white graphite
3-21 parts of alkene.
Heat-resisting material provided by the invention is made of polyimides and graphene or white graphite alkene, polyimides conduct
High-temperature agglomerant can form finely dispersed high temperature resistant functional layer with graphene or white graphite alkene, high temperature resistant functional layer tool
There is excellent high temperature resistance, is conducive to giving full play to for graphene or white graphite alkene self-characteristic, can be used for prepares coating knot
Structure stability good electrothermal layer or heat dissipating layer.
Specific embodiment
Embodiments of the present invention are described further combined with specific embodiments below.In following embodiment, graphene
It is commercially available conventional raw material, can be bought by routine business channel or be prepared using the prior art, prepare the existing of graphene
Technology can refer to the related contents such as oxidation-reduction method, CVD method, physical method.
White graphite alkene, i.e. hexagonal boron nitride nanosheet can be bought by routine business channel or be carried out using the prior art
Preparation, related art can refer to hexagonal boron nitride nanosheet preparation (Li Junqi etc., Shanxi University of Science and Technology journal, 2015
Year the 6th phase of volume 33 December) etc. related contents.
Polyimide solution is commercially available customary commercial, and model PAA-217 is limited purchased from Changzhou Fu Run spy plastic cement new material
Company, solvent NMP, directly carry out in the examples below using.
In the preparation process of high-temperature insulation heat dissipating layer, polyimides plays the role of high temperature resistant binder, is into one
Step improves the insulating properties and capacity of heat transmission of heat dissipating layer, it is preferred that in step 1), the white graphite alkene is molten relative to polyimides
The additive amount of liquid is 2-10wt%.For heating efficiency and the heating rate for further increasing electrothermal layer, it is preferred that the graphene
Additive amount relative to polyimide solution is 2-10wt%.
High-temperature insulation heat dissipation slurry can be dried by following temperature program: in 78-82 DEG C of dry 25-35min, heating
To 115-125 DEG C of drying 40-50min, it is warming up to 155-165 DEG C of drying 25-35min, is warming up to 175-185 DEG C of drying 25-
35min is warming up to 195-205 DEG C of drying 15-25min, is warming up to 215-225 DEG C of drying 15-25min, is warming up to 245-255 DEG C
Dry 25-35min.
High temperature resistant far-infrared electric slurry can be dried by following temperature program: in 78-82 DEG C of dry 25-35min, be risen
Temperature is warming up to 155-165 DEG C of drying 25-35min, is warming up to 175-185 DEG C of drying 25- to 115-125 DEG C of drying 40-50min
35min is warming up to 195-205 DEG C of drying 15-25min, is warming up to 215-225 DEG C of drying 15-25min, is warming up to 245-255 DEG C
25-35min is dried, 295-305 DEG C of drying 25-35min is warming up to.
The embodiment 1 of Metal Substrate graphene high temperature resistant far-infrared heating tube of the invention is the stainless of 1mm including thickness of pipe wall
Steel pipe matrix is disposed with high-temperature insulation heat dissipating layer on the outer peripheral surface of stainless steel tube matrix from inside to outside and high temperature resistant is far red
Outer electrothermal layer, high-temperature insulation heat dissipating layer with a thickness of 23.2 μm, by mass ratio be 31.62:15.1 polyimides and Bai Shi
Black alkene composition, high temperature resistant Far infrared electric thermosphere with a thickness of 25.3 μm, the polyimides and stone that are 31.62:20.7 by mass ratio
Black alkene composition.
The embodiment 2 of Metal Substrate graphene high temperature resistant far-infrared heating tube of the invention, including thickness of pipe wall be 1.5mm not
Become rusty steel pipe matrix, is disposed with high-temperature insulation heat dissipating layer from inside to outside on the outer peripheral surface of stainless steel tube matrix and high temperature resistant is remote
Infrared electric heating layer, high-temperature insulation heat dissipating layer with a thickness of 20.9 μm, by mass ratio be 31.62:9.3 polyimides and Bai Shi
Black alkene composition, high temperature resistant Far infrared electric thermosphere with a thickness of 22.0 μm, the polyimides and stone that are 31.62:11.9 by mass ratio
Black alkene composition.
The embodiment 3 of Metal Substrate graphene high temperature resistant far-infrared heating tube of the invention is the stainless of 2mm including thickness of pipe wall
Steel pipe matrix is disposed with high-temperature insulation heat dissipating layer on the outer peripheral surface of stainless steel tube matrix from inside to outside and high temperature resistant is far red
Outer electrothermal layer, high-temperature insulation heat dissipating layer with a thickness of 18.7 μm, by mass ratio be 31.62:3.8 polyimides and white graphite
Alkene composition, high temperature resistant Far infrared electric thermosphere with a thickness of 18.7 μm, by mass ratio be 31.62:3.8 polyimides and graphene
Composition.
The preparation method embodiment 1 of Metal Substrate graphene high temperature resistant far-infrared heating tube of the invention implements heating tube
The preparation process of example 1 is illustrated, specifically includes the following steps:
1) it takes the polyimide solution that 186g solid content is 17wt% to be added in beaker, 15.1g white graphite alkene powder is added
Enter in polyimide solution, stir evenly, obtains mixed slurry；Mixed slurry is added in three-roll grinder, in 230r/min
Under the conditions of grinding 10min to get high-temperature insulation radiate slurry.
Take 40g high-temperature insulation heat dissipation slurry be coated on 304 stainless steel pipe surfaces (thickness of pipe wall be 1 ㎜, caliber 10cm,
Pipe range is 60cm), it is coated uniformly using roll coating model, is then placed in air dry oven, 30min is dried at 80 DEG C, heated up
To 120 DEG C of drying 45min, 160 DEG C of drying 30min are warming up to, 180 DEG C of drying 20min is warming up to, is warming up to 200 DEG C of drying
20min is warming up to 220 DEG C of drying 20min, is warming up to 250 DEG C of drying 30min, then takes out heating tube and naturally cool to room
Temperature obtains the heating tube coated with high-temperature insulation heat dissipating layer.
2) it takes the polyimide solution that 186g solid content is 17wt% to be added in beaker, 20.7g graphene powder is added
It in polyimide solution, stirs evenly, obtains mixed slurry；Mixed slurry is added in three-roll grinder, in 300r/min item
15min is ground under part to get high temperature resistant far-infrared electric slurry.
42g high temperature resistant far-infrared electric slurry is taken to be coated on the table of the high-temperature insulation heat dissipating layer of heating tube obtained by step 1)
On face, is coated uniformly using roll coating model, be then placed in air dry oven, dry 30min at 80 DEG C, be warming up to 120 DEG C
45min is dried, 160 DEG C of drying 30min is warming up to, is warming up to 180 DEG C of drying 20min, be warming up to 200 DEG C of drying 20min, is heated up
To 220 DEG C of drying 20min, 250 DEG C of drying 30min are warming up to, are warming up to 300 DEG C of drying 30min, then take out heating tube simultaneously certainly
It is so cooled to room temperature, i.e., forms high temperature resistant Far infrared electric thermosphere on the surface of high-temperature insulation heat dissipating layer.
3) by two wide 1cm, the copper ring of thick 1.5mm is fastened respectively to heat-generating pipe both ends (apart from end face 1cm by screw
Place) high temperature resistant Far infrared electric thermosphere surface on, as powered electrode to get final products.
The preparation method embodiment 2 of Metal Substrate graphene high temperature resistant far-infrared heating tube of the invention, respectively using heating
The formula of high-temperature insulation heat dissipating layer, high temperature resistant Far infrared electric thermosphere that pipe embodiment 2 is related to, with reference to the preparation method of heating tube
Prepared by the mode of embodiment 1, difference is only that, is done using following drying program to high-temperature insulation heat dissipation slurry
It is dry: to dry 80min at 100 DEG C, be warming up to 160 DEG C of drying 30min, be warming up to 200 DEG C of drying 40min, be warming up to 210 DEG C of bakings
Dry 20min, is warming up to 250 DEG C of drying 30min；
High temperature resistant far-infrared electric slurry is dried using following drying program: drying 80min at 100 DEG C, is risen
Temperature is warming up to 200 DEG C of drying 40min, is warming up to 210 DEG C of drying 20min, is warming up to 250 DEG C of drying to 160 DEG C of drying 30min
30min is warming up to 300 DEG C of drying 30min.
The preparation method embodiment 3 of Metal Substrate graphene high temperature resistant far-infrared heating tube of the invention, respectively using heating
The formula of high-temperature insulation heat dissipating layer, high temperature resistant Far infrared electric thermosphere that pipe embodiment 3 is related to, with reference to the preparation method of heating tube
It is prepared by the mode of embodiment 1.
Heat-resisting material embodiment 1-3 of the invention, is made of polyimides and white graphite alkene, the weight ratio difference of the two
It is consistent with the weight ratio of respective components of high-temperature insulation heat dissipating layer of heating tube embodiment 1-3.
Heat-resisting material embodiment 4-6 of the invention, is made of polyimides and graphene, the weight ratio of the two respectively with
The weight ratio of the respective components of the high temperature resistant Far infrared electric thermosphere of heating tube embodiment 1-3 is consistent.
Test example
The heating efficiency of this test example detection heating tube embodiment 1.The dielectric strength of the heating pipe insulation layer is 200kV/
mm；When detection, by heating tube product access 220V AC power source, electric current 7.3A, initial temperature be 24 DEG C in the case where,
30s high temperature resistant Far infrared electric thermosphere is warming up to 91 DEG C, and 1min high temperature resistant Far infrared electric thermosphere is warming up to 165 DEG C, the resistance to height of 1.5min
Warm Far infrared electric thermosphere is warming up to 200 DEG C, and 2min high temperature resistant Far infrared electric thermosphere is warming up to 250 DEG C, and stablizes work at 250 DEG C
Make, heating rate is 70-148 DEG C/min, and the detection temperature of medium (air) is 240 DEG C in heating tube.Heating tube embodiment
The heat characteristic and heating tube embodiment 1 of 2-3 is suitable.
In the other embodiments of the high temperature resistant far-infrared heating tube of invention, metal tube matrix can be copper or other are thermally conductive
The good metal material of ability；The mass fraction of polyimide solution, the dosage of graphene or white graphite alkene, grinding condition, drying
Condition can be adaptively adjusted in the framework of the present definition, can get and embodiment is comparable preferably implements
Effect.
Claims (9)
1. a kind of Metal Substrate graphene high temperature resistant far-infrared heating tube, which is characterized in that including metal tube matrix, the metal tube
High-temperature insulation heat dissipating layer and high temperature resistant Far infrared electric thermosphere are disposed on the outer peripheral surface of matrix from inside to outside, high temperature resistant is exhausted
Edge heat dissipating layer by mass ratio be (30-32): the polyimides and white graphite alkene of (3-16) form, high temperature resistant Far infrared electric thermosphere by
Mass ratio is (30-32): polyimides and the graphene composition of (3-21).
2. Metal Substrate graphene high temperature resistant far-infrared heating tube as described in claim 1, which is characterized in that the metal base
Body is stainless steel or copper.
3. Metal Substrate graphene high temperature resistant far-infrared heating tube as described in claim 1, which is characterized in that the high temperature resistant is remote
Infrared electric heating layer with a thickness of 18-26 μm.
4. Metal Substrate graphene high temperature resistant far-infrared heating tube as described in claim 1, which is characterized in that the high temperature resistant is exhausted
Edge heat dissipating layer with a thickness of 18-24 μm.
5. a kind of preparation method of Metal Substrate graphene high temperature resistant far-infrared heating tube as described in claim 1, feature exist
In, comprising the following steps:
1) polyimide solution and white graphite alkene are uniformly mixed, high-temperature insulation heat dissipation slurry is made；By polyimide solution
It is uniformly mixed with graphene, high temperature resistant far-infrared electric slurry is made；
2) high-temperature insulation heat dissipation slurry is coated in vitro in metal base, it is dry, form high-temperature insulation heat dissipating layer；In high temperature resistant
High temperature resistant far-infrared electric slurry is coated outside insulating radiation layer, it is dry, formed high temperature resistant Far infrared electric thermosphere to get.
6. the preparation method of Metal Substrate graphene high temperature resistant far-infrared heating tube as claimed in claim 5, which is characterized in that step
It is rapid 1) in, the mass fraction of the polyimide solution is 15-20%.
7. the preparation method of Metal Substrate graphene high temperature resistant far-infrared heating tube as claimed in claim 5, which is characterized in that institute
It states and is uniformly mixed including being successively stirred mixing and ground and mixed, the revolving speed of the ground and mixed is 200-300r/min, when
Between be 5-20min.
8. the preparation method of Metal Substrate graphene high temperature resistant far-infrared heating tube as claimed in claim 5, which is characterized in that step
It is rapid 2) in, the drying is to be warming up to 180-220 DEG C of drying 50-70min in 80-160 DEG C of drying 100-120min, be warming up to
250-300 DEG C of drying 50-70min.
9. a kind of heat-resisting material, which is characterized in that be grouped as by the group of following parts by weight: 30-32 parts of polyimides, graphene
Or 3-21 parts of white graphite alkene.
Priority Applications (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111586902A (en) * | 2020-05-19 | 2020-08-25 | 陆建华 | Metal body and graphene coating heating body and preparation process thereof |
| CN111747404A (en) * | 2020-06-22 | 2020-10-09 | 浙江工业大学 | Preparation method of temperature-equalizing graphite tube for graphite furnace |
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| CN206141019U (en) * | 2016-08-01 | 2017-05-03 | 常州烯材碳材料科技有限公司 | Graphite alkene heat preservation membrane for water supply line |
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| CN111747404A (en) * | 2020-06-22 | 2020-10-09 | 浙江工业大学 | Preparation method of temperature-equalizing graphite tube for graphite furnace |
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