CN105274698A - High heat conduction high heatproof carbon fiber heating cloth - Google Patents
High heat conduction high heatproof carbon fiber heating cloth Download PDFInfo
- Publication number
- CN105274698A CN105274698A CN201410262691.2A CN201410262691A CN105274698A CN 105274698 A CN105274698 A CN 105274698A CN 201410262691 A CN201410262691 A CN 201410262691A CN 105274698 A CN105274698 A CN 105274698A
- Authority
- CN
- China
- Prior art keywords
- high heat
- heat conduction
- fiber
- carbon fiber
- heating cloth
- 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
Abstract
The invention discloses a high heat conduction high heatproof carbon fiber heating cloth comprising high heat conduction high heatproof carbon fiber preparation and heating cloth braiding; the high heat conduction high heatproof carbon fiber comprises polyimides fiber and mica tape layers; the outer surface of the polyimides fiber is wrapped by a plurality of mica tape layers; the mica tape layers vertically wrap the outer side of the polyimides fiber, and comprise a polyester film and a mica paper arranged in sequence from outside-in; the polyester film and the mica paper are connected through a heatproof adhesive; terylene low elasticity filaments can form a heat conduction power generation body support, and the prepared high temperature resistance carbon fiber wires and metal wires can be braided so as to form the high heat conduction high heatproof carbon fiber heating cloth; the high temperature resistance carbon fiber wires are braided in a weft direction of the fabric at certain intervals; copper filaments are radially arranged on two sides of the conductive heating cloth. Compared with other carbon fiber precursors, like polyacrylonitrile or viscose fiber, the aromatic nucleuss on a macromolecular chain of the polyimides fiber are basically on a same plane, so the high heat conduction carbon fiber with bigger graphite microcrystalline and higher fiber axial orientation degree can be more conveniently formed.
Description
technical field:
The present invention utilizes carbon fiber height heat conduction high-fire resistance energy, have developed a kind of highly-conductive hot carbon fiber electrothermal cloth and purposes.
background technology:
Carbon fiber is high-tech, the nanometer technology of generally acknowledging in the world, and carbon fiber heating is the good product of energy-saving and environmental protection and reduction of discharging; As everyone knows, the resource (coal-fired, fuel oil) of people's quasi-tradition is fewer and feweri, according to present exploitation rate, can only maintain decades.And face cost is more and more higher, and along with the progress of civilization of human society, the energy of human needs will get more and more, and environmental pollution is also more and more serious.In order to solve the contradiction between the mankind and resource, environment, energy-saving and emission-reduction will be the most important things of development in science and technology of future.
The carbon fiber major applications of developed countries in war industry, and in health care carbon fiber being applied to civil heating or human body seldom.
Utilize electric conduction of carbon fiber to send out thermal property, the electrothermal cloth designed and developed, there are wide market prospects.Produce sightless far red light rapidly after carbon fiber energising, the effects beneficial of far infrared to human body is harmless, and life all in the world be unable to do without far radiation.According to different instructions for uses, by the quantity of reasonable disposition carbon fiber filament and copper wire, the heating fabric of different voltage different capacity can be designed, can be used for warming, the health care of human body, as the thermal source of cold district house inwall, the heat-preserving constant-temperature material of large-scale groove, tank and still, fermentation or the heat-preserving constant-temperature thermal source brewageed, greenhouse, seedling rearing room, greenhouse chamber and poultry feed the thermal source of room, for the antifreeze frost prevention etc. of the snow melting deicing of highway, airfield runway, the communication equipment such as anti-freezing and heat-insulating, cold district radar on cabin deck.
The highly-conductive hot carbon Precursors of Fibers mainly Mesophase Pitch Fibers of current use, but the intensity of this kind of fiber extremely low (only a few MPa), be highly brittle, cause its continuous prodution process very loaded down with trivial details, cost is very high, and domestic still none unit can produce so far.Therefore find one to differ from former research and development route and prepare highly-conductive hot carbon fiber and have very important significance.
Researcher finds in the process preparing high starch breeding, has polyimides (PI) polymeric membrane of high-orientation, can prepare the graphite film of high-crystallinity and high-orientation in an inert atmosphere through scale pressure carbonization, graphitization.Japanese Scientists Murakami etc. adopt and highly go the PI film thought to be raw material, and through cutting, stacked, compacting, carbonization, graphitization obtained thermal conductivity up to 1800Wm
-1k
-1block materials.In these researchs, for suppressing PI strand fracture and the effusion of a large amount of carbon containing small-molecule substances that causes when heat treatment, reducing the defect in film, needing to apply high pressure and slowly heating rate, preparation condition harshness.The method is difficult to prepare bulk sample and produces in batches, and its application have received larger restriction.If polyimides is spun into fiber, prepares highly-conductive hot carbon fiber heat-treating fiber, will greatly expand his range of application, will have broad prospects.And PI fiber is as high polymer fibre, its extension at break is usually above 10%, and intensity is greater than 100MPa, very easily realizes the continuous prodution of highly-conductive hot carbon fiber.
PI fiber is owing to being subject to comparatively high draft in spinning moulding process in preparation process, and its macromolecular chain is mostly along fiber axis preferred orientation.Therefore, PI strand orientation is in the fibre compared with film, higher to the degree of orientation along fiber axis, arranges more regular, and simultaneously due to main chain containing more aromatic rings, PI molecule is similar to the long band of a rigidity, and aromatic rings is distributed on wide of long band mostly.The very similar Mesophase Pitch Fibers of arrangement mode of this aromatic rings, and PI to obtain molecular weight high far beyond Mesophase Pitch Fibers, its strand along fiber axial height preferred orientation is also longer than Mesophase Pitch Fibers.It is larger that this molecular structure may generate size, the graphite lattice that defect is less.
summary of the invention:
The present invention mainly have studied a kind of preparation method of new type polyimide base carbon fibre and carries out weaving with this fiber and prepare carbon fibre heating cloth and describe its some purposes.
The preparation method of Primary Reference PAN base carbon fibre of the present invention and high heat conduction MP base carbon fibre prepares polyimides base carbon fibre, it is characterized in that, comprise the following steps: first carry out gas phase or liquid stable process, make its polyimides base carbon fibre macromolecular chain crosslinking curing; Then stabilisation fiber is carried out in nitrogen atmosphere the carbonization under low temperature constraints, finally carry out high temperature graphitization process.
The present invention is achieved through the following technical solutions:
1. the preparation of high heat conduction polyimide fiber
(1) one-step method spinning polyimide fiber
Dianhydride and diamines two kinds of monomers are heated to 150-250 DEG C and obtain polyimides in high boiling solvent (as phenols).Take polyimide solution as spinning slurry, wet method or wet-dry change spinning polyimide fiber, fiber, after preliminary elongational, after removing solvent, carries out hot-stretch process (300-500 DEG C), can obtain polyimide fiber.
(2) gas phase stabilisation or liquid stable processing procedure
Draw ratio is 5-15%, and air atmosphere or oxygen atmosphere rise to 300-450 DEG C with the speed of 3-10 DEG C/min by room temperature, then rise to 450-550 DEG C with the programming rate of 1-2 DEG C/min again, stops 60min.(being 450 DEG C when above-mentioned two sections of temperature are different)
Liquid phase oxidation medium is the red fuming nitric acid (RFNA) (mass concentration 68%) under boiling condition, and the processing time is 10-25min, and the polyimide fiber after process is clean and dry with distilled water.
(3) low-temperature carbonization and high temperature graphitization process
Draw ratio is 0-6%, high pure nitrogen atmosphere, and pressure 0.1-6MPa rises to 1000-1200 DEG C with the programming rate of 5-10 DEG C/min, and temperature retention time is 60min.
High-purity argon gas atmosphere, temperature is 2400-3200 DEG C, temperature retention time 60min.
(4) twist
The fiber prepared is added the carbon fiber rope being twisted rugosity and being applicable to the radical of some.
2. the high preparation of heat conduction highly heat-resistant polyimide fiber wire and the braiding of electrothermal cloth
(1) the high heat-resisting carbon fiber of high heat conduction
Polyester film 2, mica paper 3 connect obtained mica belt by Heat-Resisting Adhesive successively, and each Rotating fields stable connection between mica belt, can not scatter, and plays its resistant to elevated temperatures effect to greatest extent.Coated 1-3 stratus master tape layer on high heat conduction polyimide fiber superficies, mica belt is longitudinally coated on outside high heat conduction polyimide fiber.
Be connected by adhesive layer between mica belt with high heat conduction polyimide fiber, connected by adhesive layer fixing compact, prevent from occurring to produce between high heat conduction polyimide fiber and mica belt when use fire resistant polyimide fiber wire moving, affect serviceability.
(2) weave
First low elastic polyester filament carries out adding wet process, relative humidity remains on more than 70%, the parameter of GA747 Rapier looms is set: opening time 285 ° ± 2 °, back beam height 9cm, arrow shaft enters the shed open time 80 ° ± 2 °, and arrow shaft goes out shed open 280 ° ± 2 °, loom rotating speed 180r/min, pickwheel 23 tooth, the fire resistant polyimide fiber wire of above-mentioned preparation and plain conductor are woven into the high heat-resisting electrothermal cloth of high heat conduction by GA747 Rapier looms by the support being made up of heat conduction generating body low elastic polyester filament.Fire resistant polyimide fiber wire is the embedding broadwise being woven in fabric at certain intervals, copper monofilament is radially distributed in the both sides of conductive electrothermal cloth, use the electrothermal cloth close structure that two-dimentional plain weave technology weaves, mesh is even, has the advantages such as corrosion resistance is good and durable.
3. advantage of the present invention and other carbon fiber precursors are as compared with polyacrylonitrile or viscose, aromatic rings on the macromolecular chain of polyimide fiber, substantially in same plane, is therefore more variablely that graphite microcrystal is larger, fiber axis is to the higher highly-conductive hot carbon fiber of the degree of orientation.
detailed description of the invention:
embodiment 1
First, its extension at break is selected to be greater than 4%, intensity is greater than 100MPa, the axial preferred orientation degree of its macromolecular chain is greater than 60% simultaneously, is 0, is placed in fixing for these fiber two ends i.e. drawing-off heat-treatment furnace and carries out gas phase thermostabilization, under air atmosphere, rise to 350 DEG C with the speed of 5 DEG C/min by room temperature, then rise to 500 DEG C with the programming rate of 1 DEG C/min by 350 DEG C again, insulation 30min; Then thermostabilization fiber is carried out low-temperature carbonization process when draw ratio is 0, under high pure nitrogen atmosphere, pressure 0.1MPa, is warming up to 500 DEG C with 10 DEG C/min, then rises to 800 DEG C of insulation 30min with the programming rate of 2 DEG C/min, after cooling, fiber two ends are fixed, is placed in graphitizing furnace, under high-purity argon gas environment, carry out graphitization processing (2600 DEG C, 30min), at this moment the thermal conductivity of gained is 145Wm
-1k
-1, density is 2.03g/cm
3
The mica belt of preparation is connected by adhesive layer with the high heat conduction polyimide fiber of above-mentioned preparation, mica belt is longitudinally coated on outside high heat conduction polyimide fiber, coated 3 layers, the high heat conduction height heat-resisting wire of above-mentioned preparation and the copper monofilament of diameter 0.15mm are woven into the high heat-resisting carbon fibre heating cloth of high heat conduction by GA747 Rapier looms by the support being made up of heat conduction generating body 167dtex/30f low elastic polyester filament.
embodiment 2
First, its extension at break is selected to be greater than 4%, intensity is greater than 100MPa, the axial preferred orientation degree of its macromolecular chain is greater than 60% simultaneously, is 0, is placed in fixing for these fiber two ends i.e. drawing-off heat-treatment furnace and carries out gas phase thermostabilization, under air atmosphere, rise to 350 DEG C with the speed of 5 DEG C/min by room temperature, then rise to 500 DEG C with the programming rate of 1 DEG C/min by 350 DEG C again, insulation 30min; Then thermostabilization fiber is carried out low-temperature carbonization process when draw ratio is 0, under high pure nitrogen atmosphere, pressure 0.1MPa, is warming up to 500 DEG C with 10 DEG C/min, then rises to 800 DEG C of insulation 30min with the programming rate of 2 DEG C/min, after cooling, fiber two ends are fixed, is placed in graphitizing furnace, under high-purity argon gas environment, carry out graphitization processing (3200 DEG C, 30min), at this moment the thermal conductivity of gained is 405Wm
-1k
-1, density is 2.14g/cm
3
The mica belt of preparation is connected by adhesive layer with the high heat conduction polyimide fiber of above-mentioned preparation, mica belt is longitudinally coated on outside high heat conduction polyimide fiber, coated 3 layers, the high heat conduction height heat-resisting wire of above-mentioned preparation and the copper monofilament of diameter 0.15mm are woven into the high heat-resisting carbon fibre heating cloth of high heat conduction by GA747 Rapier looms by the support being made up of heat conduction generating body 167dtex/30f low elastic polyester filament.
embodiment 3
First, its extension at break is selected to be greater than 4%, intensity is greater than 100MPa, the axial preferred orientation degree of its macromolecular chain is greater than 60% simultaneously, is 0, is placed in fixing for these fiber two ends i.e. drawing-off heat-treatment furnace and carries out gas phase thermostabilization, under air atmosphere, rise to 350 DEG C with the speed of 5 DEG C/min by room temperature, then rise to 500 DEG C with the programming rate of 1 DEG C/min by 350 DEG C again, insulation 30min; Then thermostabilization fiber is carried out low-temperature carbonization process when draw ratio is 10%, under high pure nitrogen atmosphere, pressure 0.1MPa, is warming up to 500 DEG C with 10 DEG C/min, then rises to 800 DEG C of insulation 30min with the programming rate of 2 DEG C/min, after cooling, fiber two ends are fixed, is placed in graphitizing furnace, under high-purity argon gas environment, carry out graphitization processing (3000 DEG C, 30min), at this moment the thermal conductivity of gained is 417Wm
-1k
-1, density is 2.21g/cm
3
The mica belt of preparation is connected by adhesive layer with the high heat conduction polyimide fiber of above-mentioned preparation, mica belt is longitudinally coated on outside high heat conduction polyimide fiber, coated 3 layers, the high heat conduction height heat-resisting wire of above-mentioned preparation and the copper monofilament of diameter 0.15mm are woven into the high heat-resisting carbon fibre heating cloth of high heat conduction by GA747 Rapier looms by the support being made up of heat conduction generating body 167dtex/30f low elastic polyester filament.
Claims (7)
1. the high heat-resisting carbon fibre heating cloth of high heat conduction, comprising: high heat conduction polyimide fiber, the high preparation of heat-resisting carbon fiber of high heat conduction and the braiding of electrothermal cloth:
(1) polyimide fiber
First, polyimide fiber is spinned by one-step method, its polyimides base carbon fibre macromolecular chain crosslinking curing is made through gas phase stabilisation, stabilisation fiber is carried out in nitrogen atmosphere the carbonization under low temperature constraints, then carry out high temperature graphitization process, finally twisting obtains the polyimide fiber of high heat conduction;
(2) the high heat-resisting carbon fiber of high heat conduction
The high heat-resisting carbon fiber of high heat conduction is made up of high heat conduction polyimide fiber and mica belt, high heat conduction polyimide fiber outer surface is coated with multi layer cloud master tape layer, mica belt is longitudinally coated on outside high heat conduction polyimide fiber, mica belt comprises polyester film, mica paper successively by outside to inner side, is connected between polyester film, mica paper by Heat-Resisting Adhesive;
(3) high for the high heat conduction of above-mentioned preparation heat-resisting carbon fiber and plain conductor are woven into the high heat-resisting carbon fibre heating cloth of high heat conduction by the support forming heat conduction generating body by low elastic polyester filament, the high heat-resisting carbon fiber of the high heat conduction embedding broadwise being woven in fabric at certain intervals, copper monofilament is radially distributed in the both sides of conductive electrothermal cloth.
2. the high heat-resisting carbon fibre heating cloth of high heat conduction according to claim 1, the preferred extension at break of described polyimide fiber is greater than 4%, and intensity is greater than 100MPa, and the axial preferred orientation degree of its macromolecular chain is higher than 60% simultaneously.
3., according to the high heat-resisting carbon fibre heating cloth of high heat conduction according to claim 1, the polyester film in described step (1) is biaxially oriented polyester film.
4., according to the high heat-resisting carbon fibre heating cloth of high heat conduction according to claim 1, described Heat-Resisting Adhesive is modified epoxide resin adhesive.
5., according to the high heat-resisting carbon fibre heating cloth of high heat conduction according to claim 1, the plain conductor in described step (2) is the copper monofilament of diameter 0.15mm.
6., according to the high heat-resisting carbon fibre heating cloth of high heat conduction according to claim 1, low elastic polyester filament 167dtex/30f, 100dtex/40f or 76dtex/34f's in described step (2) is wherein a kind of.
7., according to the high heat-resisting carbon fibre heating cloth of high heat conduction according to claim 1, what described plain conductor and the high heat-resisting carbon fiber of high heat conduction adopted is two-dimentional plain weave technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262691.2A CN105274698A (en) | 2014-06-13 | 2014-06-13 | High heat conduction high heatproof carbon fiber heating cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262691.2A CN105274698A (en) | 2014-06-13 | 2014-06-13 | High heat conduction high heatproof carbon fiber heating cloth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105274698A true CN105274698A (en) | 2016-01-27 |
Family
ID=55144489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410262691.2A Pending CN105274698A (en) | 2014-06-13 | 2014-06-13 | High heat conduction high heatproof carbon fiber heating cloth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105274698A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020199354A1 (en) * | 2019-04-04 | 2020-10-08 | 碳翁(北京)科技有限公司 | High-temperature-resistant electrothermal fiber and application thereof |
| CN112280328A (en) * | 2019-07-24 | 2021-01-29 | 中国航发商用航空发动机有限责任公司 | Engine fan containing casing and preparation method thereof |
-
2014
- 2014-06-13 CN CN201410262691.2A patent/CN105274698A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020199354A1 (en) * | 2019-04-04 | 2020-10-08 | 碳翁(北京)科技有限公司 | High-temperature-resistant electrothermal fiber and application thereof |
| CN112280328A (en) * | 2019-07-24 | 2021-01-29 | 中国航发商用航空发动机有限责任公司 | Engine fan containing casing and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103285920B (en) | Three-dimensional fiber-based aerogel catalyst carrier and preparation method thereof | |
| CN103265010B (en) | Three-dimensional carbon fiber based aerogel material and preparation method thereof | |
| CN103820883B (en) | A kind of preparation method of bacteria cellulose base nano carbon fibre | |
| CN104790070A (en) | Method for preparing polyacrylonitrile carbon fiber with gamma ray irradiation | |
| CN102605477B (en) | Polyimide-based carbon fiber and preparation method thereof | |
| CN104882613A (en) | Preparation method for flexible and highly-conductive composite carbon fiber cloth | |
| CN109763374B (en) | Flexible far infrared heating aramid nanofiber film and preparation method thereof | |
| CN107151835A (en) | A kind of Flexible graphene fiber and its continuous preparation method | |
| CN105696116A (en) | Preparation method of novel high-heat conduction carbon fibers | |
| CN108286090B (en) | Preparation method of polyacrylonitrile-based high-strength high-modulus carbon fiber | |
| Newcomb et al. | The properties of carbon fibers | |
| CN107108227A (en) | Graphite flake and preparation method thereof | |
| CN107805865A (en) | A kind of electrical heating fabric based on carbon nano-tube fibre and preparation method thereof | |
| CN105274698A (en) | High heat conduction high heatproof carbon fiber heating cloth | |
| RU2429316C1 (en) | Procedure for continuous production of hydrated cellulose of carbon fibre in form of unidirectional braid | |
| CN109989119A (en) | A kind of preparation method and product and application with the porous fibre for being orientated pore structure | |
| CN205252714U (en) | Basalt acupuncture felt | |
| CN110331469A (en) | The preparation method and applications of CuO/Cu nitrogen-doped carbon nano-fiber material | |
| CN103911688A (en) | Large-diameter polyacrylonitrile-based high-modulus and high-intensity carbon fibers and preparation method thereof | |
| CN108251919B (en) | Intermittent and continuous asphalt-based graphite fiber filament preparation method | |
| CN112852147A (en) | High-conversion-efficiency light absorber film, preparation method thereof and seawater desalination device comprising film | |
| CN105483909A (en) | Advanced composite material carbon fiber heating fabric | |
| CN111285352B (en) | High-temperature carbonized aramid nanofiber conductive material and preparation method thereof | |
| Gelfond et al. | Highly electrically conductive biomass-derived carbon fibers for permanent carbon sequestration | |
| CN109957860B (en) | Preparation method of viscose high-temperature graphite carbon fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160127 |
|
| WD01 | Invention patent application deemed withdrawn after publication |