CN1832637A - Modified processing method of carbon fibre electrothermal wire - Google Patents
Modified processing method of carbon fibre electrothermal wire Download PDFInfo
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- CN1832637A CN1832637A CN 200610034977 CN200610034977A CN1832637A CN 1832637 A CN1832637 A CN 1832637A CN 200610034977 CN200610034977 CN 200610034977 CN 200610034977 A CN200610034977 A CN 200610034977A CN 1832637 A CN1832637 A CN 1832637A
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- electrothermal wire
- carbon fibre
- carbon fiber
- fibre electrothermal
- processing method
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Abstract
This invention discloses a modified process method for carbon fiber heating-wires characterizing in mixing a powder miture with graphite powder as the main component and a bond solution to make up of a carbon fiber heating-wire modified solution, then dipping the processed carbon fibers into the modified solution to be filtered and dried, in which, the mixture includes 85-100% of graphite powder, 0-10% of metallic powder and 0-5% of rare earth elements to be rubbed to over 800 meshes and the weight percentage of the powder mixture and the bond solution in the modified solution is (35-40%) : ( 60-65%).
Description
Technical field
The present invention relates to a kind of carbon fibre electrothermal wire process technology, particularly relate to a kind of modified processing method of carbon fibre electrothermal wire.
Background technology
Carbon fiber is applied in field of electric heating as a kind of new material, and its frequency spectrum 95% is distributed in that 2.5 μ～15 μ are near, in the middle infrared (Mid-IR) scope, and infrared transfer ratio has efficient, energy-conservation, free of contamination characteristics up to 98%.
The extension at break of carbon fiber is less, belongs to fragile material.The easy brittle failure of carbon fiber surface produces burr in the course of processing, during energising Inter-turn Short Circuit Phenomenon can take place.In addition, the resistance characteristic of carbon fiber is the negative temperature feature, be carbon fiber when energising voltage raise or the electric current increase can make carbon fiber temperature rise, resistance value can raise under the normal condition, and the resistance value of carbon fiber can diminish at this moment, causing that power is non-linear soars, and more than the problem of Cun Zaiing all is major defects of electrothermal tube.
Summary of the invention
The objective of the invention is to overcome the deficiency of above technology, provide a kind of carbon fibre electrothermal wire is carried out the modification processing so that change electric conduction of carbon fiber heating serviceability, the method that its hot strength, bending strength, friction resistant performance strengthen.
The present invention realizes in the following way: the pulverulent mixture and the binder solution that at first will be main component with the graphite powder evenly mix, and constitute carbon fibre electrothermal wire modification liquid;
Carbon fiber after will processing is then put into modification liquid and is soaked dipping;
Behind the unnecessary liquid of elimination after filtering, oven dry is handled.
Wherein graphite powder is that the pulverulent mixture of main component comprises that graphite powder 85%～100%, metal powder 0～10%, rare earth element 0～5% mix, and are ground to more than 800 orders.
Described graphite powder is crystalline flake graphite, micro crystal graphite, carbon content＞99.9%; The nano rare earth element is lanthanum chloride, cerium chloride, chromic acid lanthanum; Metal powder is molybdenum powder, tungsten powder etc.; Binder solution is water-soluble resin such as melamine resin, polyacrylic acid, polymethylacrylic acid etc.; Or organic siliconresin such as methyl phenyl silicone resin etc.
Carbon fibre electrothermal wire of the present invention can be carbon fiber filament, carbon fiber felt-cloth.Carbon fiber filament, carbon fiber felt-cloth can modification processing or the processing of moulding post-modification before moulding.
In the composition of described carbon fibre electrothermal wire modification liquid, the weight ratio of pulverulent mixture and binder solution is (35%～40%): (60%～65%).
In the described processing step, it is 1～10 minute that carbon fiber is put into modification liquid immersion dip time, and bake out temperature is 100 ℃～200 ℃.
The carbon fiber filament of handling through modification turns to coil spring shape on spiral filament forming machine, around coil spring shape carbon fiber filament periphery one or more heater is set, and heating-up temperature makes the typing of coil spring shape carbon fiber filament at 450 ℃～600 ℃.Constitute modification coil spring shape carbon fibre electrothermal wire.
Adopt the modified carbon fiber heating wire of said method after modification is handled, the carbon fiber interface binding power obviously improves, the no obvious burr in surface, and hot strength, bending strength, friction resistant performance strengthen.Because the infiltration affinity of graphite powder and nano rare earth element, carbon fiber resistance negative temperature characteristic improves, and the work of carbon fiber electrically thermal element is after 6000 hours, and power increases rate of change≤5%.Carbon fiber current overload ability under equal colour temperature state improves 30%.
Embodiment
Embodiment 1
At first 100% crystalline flake graphite is ground to more than 800 orders, mixes with polyacrylic acid, its ratio is a crystalline graphite powder 40%, and polyacrylic acid 60% constitutes modification liquid; Carbon fiber after the processing is put into modification liquid to be soaked about 1～10 minute; Filter the back with 100 ℃～200 ℃ oven dry.
Embodiment 2
At first with 95% crystalline flake graphite, molybdenum powder 3.5%, more than chromic acid lanthanum 1.5% mixed grinding to 800 order, mix with polyacrylic acid, its ratio is a pulverulent mixture 35% again, and polyacrylic acid 65% constitutes modification liquid; Carbon fiber after the processing is put into modification liquid to be soaked about 1～10 minute; Filter the back with 100 ℃～200 ℃ oven dry.
After above-mentioned immersion operation and oven dry, can also on spiral filament forming machine, turn to coil spring shape through the carbon fiber filament that modification is handled, around coil spring shape carbon fiber filament periphery one or more heater is set, heating-up temperature is at 450 ℃～600 ℃, make the typing of coil spring shape carbon fiber filament, constitute modification coil spring shape carbon fiber wire.
In the above-described embodiments, graphite powder can adopt crystalline flake graphite, micro crystal graphite, carbon content＞99.9%; The nano rare earth element is lanthanum chloride, cerium chloride, chromic acid lanthanum; Metal powder is molybdenum powder, tungsten powder etc.; Binder solution is water-soluble resin such as melamine resin, polyacrylic acid, polymethylacrylic acid etc.; Or organic siliconresin such as methyl phenyl silicone resin etc.
Carbon fibre electrothermal wire of the present invention can be carbon fiber filament, carbon fiber felt-cloth; Carbon fiber filament, carbon fiber felt-cloth can modification processing or the processing of moulding post-modification before moulding.
Claims (8)
1, a kind of modified processing method of carbon fibre electrothermal wire is characterized in that, it is at first will be that the pulverulent mixture and the binder solution of main component evenly mixes with the graphite powder, constitutes carbon fibre electrothermal wire modification liquid;
Carbon fiber after will processing is then put into modification liquid and is soaked dipping;
Behind the unnecessary liquid of elimination, oven dry is handled after filtration.
2, a kind of modified processing method of carbon fibre electrothermal wire according to claim 1, it is characterized in that, described is to comprise graphite powder 85%～100%, metal powder 0～10%, rare earth element 0～5% in the pulverulent mixture of main component with the graphite powder, is ground to more than 800 orders after mixing.
3, a kind of modified processing method of carbon fibre electrothermal wire according to claim 1 and 2 is characterized in that, described binder solution is a water-soluble resin: melamine resin, polyacrylic acid, polymethylacrylic acid; It or is organic siliconresin: methyl phenyl silicone resin.
4, a kind of modified processing method of carbon fibre electrothermal wire according to claim 1 and 2 is characterized in that in the composition of described carbon fibre electrothermal wire modification liquid, the weight ratio of pulverulent mixture and binder solution is (35%～40%): (60%～65%).
5, according to each described a kind of modified processing method of carbon fibre electrothermal wire of claim 1 to 4, it is characterized in that graphite powder of the present invention is crystalline flake graphite, micro crystal graphite, carbon content＞99.9%.The nano rare earth element is lanthanum chloride, cerium chloride, chromic acid lanthanum; Metal powder is molybdenum powder, tungsten powder; Binder solution is water-soluble resin or organic siliconresin.
6, a kind of modified processing method of carbon fibre electrothermal wire according to claim 1 and 2 is characterized in that, carbon fibre electrothermal wire of the present invention is carbon fiber filament, carbon fiber felt-cloth; Carbon fiber filament, carbon fiber felt-cloth are modification processing or the processing of moulding post-modification before moulding.
7, a kind of modified processing method of carbon fibre electrothermal wire according to claim 1 and 2 is characterized in that, in the described processing step, it is 1～10 minute that carbon fiber is put into modification liquid immersion dip time, and bake out temperature is 100 ℃～200 ℃.
8, a kind of modified processing method of carbon fibre electrothermal wire according to claim 1 and 2, it is characterized in that, the carbon fiber filament of handling through modification behind described immersion dipping and baking operation turns to coil spring shape, and through heating, heating-up temperature makes the typing of coil spring shape carbon fiber filament constitute modification coil spring shape carbon fibre electrothermal wire at 450 ℃～600 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100349770A CN100450316C (en) | 2006-04-14 | 2006-04-14 | Modified processing method of carbon fibre electrothermal wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100349770A CN100450316C (en) | 2006-04-14 | 2006-04-14 | Modified processing method of carbon fibre electrothermal wire |
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| CN1832637A true CN1832637A (en) | 2006-09-13 |
| CN100450316C CN100450316C (en) | 2009-01-07 |
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| CNB2006100349770A Expired - Fee Related CN100450316C (en) | 2006-04-14 | 2006-04-14 | Modified processing method of carbon fibre electrothermal wire |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010231A (en) * | 2010-10-24 | 2011-04-13 | 西安超码科技有限公司 | Method for preparing low-density carbon/carbon composite material surface coating |
| CN101412632B (en) * | 2008-11-13 | 2011-07-20 | 中南大学 | Preparation of carbon / carbon composite material heating element for polysilicon furnace |
| CN105951505A (en) * | 2016-06-22 | 2016-09-21 | 陕西科技大学 | Preparation method of methacrylic acid non-destructively modified carbon fiber reinforced wet-type friction material |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2140123Y (en) * | 1992-11-03 | 1993-08-11 | 许大坤 | Ac./dc. two-purpose low-voltage coating heat apparatus |
| JP3262071B2 (en) * | 1998-06-09 | 2002-03-04 | 松下電器産業株式会社 | Manufacturing method of carbon heating element |
| JP2002158080A (en) * | 2000-11-21 | 2002-05-31 | Mitsubishi Pencil Co Ltd | Carbon system heating element |
| CN100391311C (en) * | 2003-11-17 | 2008-05-28 | 李家俊 | Method for fabricating heating element and electrode lead in carbon fiber far infrared electric heating tube |
| CN1243047C (en) * | 2004-08-12 | 2006-02-22 | 上海交通大学 | Preparation process for composite of rare earth modified carbon-fibre / epoxy resin |
| CN100344810C (en) * | 2005-10-12 | 2007-10-24 | 中国科学院山西煤炭化学研究所 | Production and apparatus for graphite carbon |
-
2006
- 2006-04-14 CN CNB2006100349770A patent/CN100450316C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101412632B (en) * | 2008-11-13 | 2011-07-20 | 中南大学 | Preparation of carbon / carbon composite material heating element for polysilicon furnace |
| CN102010231A (en) * | 2010-10-24 | 2011-04-13 | 西安超码科技有限公司 | Method for preparing low-density carbon/carbon composite material surface coating |
| CN102010231B (en) * | 2010-10-24 | 2013-05-22 | 西安超码科技有限公司 | Method for preparing low-density carbon/carbon composite material surface coating |
| CN105951505A (en) * | 2016-06-22 | 2016-09-21 | 陕西科技大学 | Preparation method of methacrylic acid non-destructively modified carbon fiber reinforced wet-type friction material |
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| CN100450316C (en) | 2009-01-07 |
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