CN103074758B - Ultrasonic atomization humidification method for production of carbon fiber - Google Patents
Ultrasonic atomization humidification method for production of carbon fiber Download PDFInfo
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- CN103074758B CN103074758B CN201110327262.5A CN201110327262A CN103074758B CN 103074758 B CN103074758 B CN 103074758B CN 201110327262 A CN201110327262 A CN 201110327262A CN 103074758 B CN103074758 B CN 103074758B
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- carbon fiber
- humidification
- ultrasonic atomization
- atomization
- producing
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 57
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 57
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000000889 atomisation Methods 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 230000010355 oscillation Effects 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 14
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 12
- 239000003921 oil Substances 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 9
- 229920000570 polyether Polymers 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000001035 drying Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract 2
- 239000002243 precursor Substances 0.000 description 17
- 238000007598 dipping method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Inorganic Fibers (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses an ultrasonic atomization humidification method for production of a carbon fiber. The method comprises the following steps: (1) ultrasonic atomization: a step of carrying out ultrasonic oscillation and atomization on humidification liquid to obtain a fog granule and controlling relative humidity in an atomization humidification apparatus to be 30 to 99% by adjusting the frequency of ultrasonic oscillation and the addition amount of the humidification liquid; and (2) humidification: a step of humidifying the carbon fiber in the atomization humidification apparatus until moisture content of the carbon fiber is 0.5 to 10%. According to the method, after humidification of the carbon fiber, the moisture content in the carbon fiber is low, energy consumption for drying of the carbon fiber in subsequent production is low, so more production cost is saved compared with the prior art; after humidification, the fog granule adheres onto the surface of the carbon fiber, so the interior structure of the carbon fiber is not destroyed, mechanical damage to the carbon fiber during production is reduced, and thus, strength of the carbon fiber is maximumly protected from decrease in subsequent production procedures and performances like tensile strength of a carbon fiber product are eventually improved.
Description
Technical field
The invention belongs to carbon fiber production technical field, particularly a kind of ultrasonic atomization humidification method of producing for carbon fiber.
Background technology
Middle and later periods in 20th century, the excellent properties of carbon fiber using it as fibre reinforced composites, starts to be applied in the field such as aerospace, sports goods.Along with the raising of carbon fiber product performance and the development of fibre reinforced composites technology, carbon fiber is applied to the fields such as space flight and aviation, defence and military, style equipment, medical devices, new forms of energy and civil construction more and more widely, and the demand of high-performance carbon fibre also strengthens fast.Carbon fibre manufacturing processes comprises the steps such as pre-oxidation, charing, surface treatment, and each step all has vital impact to the quality of carbon fiber.The carbon fiber of high-performance, high-quality requires the good homogeneity of property retention and the stability of product.For producing high performance carbon fiber, in production process, material property and homogeneity thereof, each step working condition is stable, is all directly determining the final performance height of carbon fiber product.
In order to ensure the performance of pre-oxygen silk in production process, Chinese patent CN 101760807A uses the method for dipping pure water, oxirane modified silicon oil or ammonia modified silicon oil, reduces the generation of pre-oxidation lousiness in carbon fiber manufacture.
In order to reduce the mechanical damage of impregnating equipment to fiber surface, Chinese patent CN 101967735A provides a kind of dipping machine that fiber is had no mechanical damage, and can realize the treatment process such as chemical modification, washing in carbon fiber serialization production process.
But, in above-mentioned patent documentation, carbon fibre precursor is all adopted to the method that uses liquid direct impregnation, make precursor before pre-oxidation step, contain more steeping liq.On the one hand, this makes the steeping liq in precursor in subsequent production in the time drying, need higher energy consumption, has increased production cost; On the other hand, due to the too much dipping of liquid to precursor, liquid can enter precursor inside, thereby the internal structure of destroying to a certain extent precursor reduces the performance of precursor, finally reduces the performance such as TENSILE STRENGTH of carbon fiber product.
Summary of the invention
In order to overcome the shortcoming existing in existing carbon fiber air-humidification method with not enough, the object of the present invention is to provide a kind of ultrasonic atomization humidification method of producing for carbon fiber, the method has no mechanical damage, has improved carbon fiber TENSILE STRENGTH and save production cost carbon fiber.
Object of the present invention is achieved through the following technical solutions:
A ultrasonic atomization humidification method of producing for carbon fiber, comprises the following steps:
(1) ultrasonic atomization: being droplet by the atomization of humidification liquid sonic oscillation, is 30-99% by regulating the relative humidity in the frequency of sonic oscillation and the addition control atomizing humidifier of humidification liquid;
(2) humidification: by carbon fiber humidification in atomizing humidifier, to carbon fiber water capacity be 0.5-10%.
The described process by humidification liquid ultrasonic atomizatio of step (1) can be to carry out in atomizing humidifier; Also can be to carry out outward at atomizing humidifier, and then droplet is delivered to atomizing humidifier;
The described humidification liquid of step (1) is the one in pure water, running water or the polyether modified silicon oil aqueous solution;
In the described polyether modified silicon oil aqueous solution, the mass concentration of polyether modified silicon oil is 2-15%;
Relative humidity in the described atomizing humidifier of step (1) is preferably 50-95%;
The described carbon fiber of step (2) can be polyacrylonitrile-based carbon fibre;
The described carbon fiber water capacity of step (2) is preferably 0.7-8%.
The present invention has following advantage and effect with respect to prior art:
In air-humidification method of the present invention, after carbon fiber humidification, water capacity is lower, and in subsequent production, carbon fiber energy consumption in the time drying is also low, more saves production cost than existing production technology; And the droplet that after humidification, ultrasonic atomization produces is attached to carbon fiber surface; do not destroy the internal structure of carbon fiber and can form layer protecting film at carbon fiber surface; reduce carbon fiber mechanical damage in process of production; thereby protect to greatest extent the intensity of carbon fiber can not reduce in subsequent production process, finally improved the performances such as the TENSILE STRENGTH of carbon fiber product.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
A ultrasonic atomization humidification method of producing for polyacrylonitrile-based carbon fibre, its step is as follows:
(1) ultrasonic atomization: be droplet by the atomization of pure water sonic oscillation, making the relative humidity in atomizing humidifier is 30%;
(2) humidification: by polyacrylonitrile base carbon fiber precursors humidification in atomizing humidifier, adding to precursor water capacity is 0.5%.
Embodiment 2
A ultrasonic atomization humidification method of producing for polyacrylonitrile-based carbon fibre, its step is as follows:
(1) ultrasonic atomization: the polyether modified silicon oil aqueous solution sonic oscillation atomization that is 2% by mass concentration is droplet, and making the relative humidity in atomizing humidifier is 50%;
(2) humidification: by polyacrylonitrile base carbon fiber precursors humidification in atomizing humidifier, adding to precursor water capacity is 0.7%.
Embodiment 3
A ultrasonic atomization humidification method of producing for polyacrylonitrile-based carbon fibre, its step is as follows:
(1) ultrasonic atomization: the polyether modified silicon oil aqueous solution sonic oscillation atomization that is 10% by mass concentration is droplet, and making the relative humidity in atomizing humidifier is 70%;
(2) humidification: by polyacrylonitrile base carbon fiber precursors humidification in atomizing humidifier, adding to precursor water capacity is 4%.
Embodiment 4
A ultrasonic atomization humidification method of producing for polyacrylonitrile-based carbon fibre, its step is as follows:
(1) ultrasonic atomization: the polyether modified silicon oil aqueous solution sonic oscillation atomization that is 15% by mass concentration is droplet, and making the relative humidity in atomizing humidifier is 95%;
(2) humidification: by polyacrylonitrile base carbon fiber precursors humidification in atomizing humidifier, adding to precursor water capacity is 8%.
Embodiment 5
A ultrasonic atomization humidification method of producing for polyacrylonitrile-based carbon fibre, its step is as follows:
(1) ultrasonic atomization: be droplet by the atomization of running water sonic oscillation, making the relative humidity in atomizing humidifier is 99%;
(2) humidification: by polyacrylonitrile base carbon fiber precursors humidification in atomizing humidifier, adding to precursor water capacity is 10%.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (6)
1. a ultrasonic atomization humidification method of producing for carbon fiber, is characterized in that comprising the following steps:
(1) ultrasonic atomization: being droplet by the atomization of humidification liquid sonic oscillation, is 30-99% by regulating the relative humidity in the frequency of sonic oscillation and the addition control atomizing humidifier of humidification liquid;
(2) humidification: by carbon fiber humidification in atomizing humidifier, to carbon fiber water capacity be 0.5-10%;
The described humidification liquid of step (1) is the polyether modified silicon oil aqueous solution.
2. ultrasonic atomization humidification method of producing for carbon fiber according to claim 1, it is characterized in that: the described process by humidification liquid ultrasonic atomizatio of step (1) is to carry out in atomizing humidifier, or be to carry out at atomizing humidifier, and then droplet is delivered to atomizing humidifier outward.
3. ultrasonic atomization humidification method of producing for carbon fiber according to claim 1, is characterized in that: in the described polyether modified silicon oil aqueous solution, the mass concentration of polyether modified silicon oil is 2-15%.
4. ultrasonic atomization humidification method of producing for carbon fiber according to claim 1, is characterized in that: the relative humidity in the described atomizing humidifier of step (1) is 50-95%.
5. ultrasonic atomization humidification method of producing for carbon fiber according to claim 1, is characterized in that: the described carbon fiber of step (2) is polyacrylonitrile-based carbon fibre.
6. ultrasonic atomization humidification method of producing for carbon fiber according to claim 1, is characterized in that: the water capacity of the described carbon fiber of step (2) is 0.7-8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110327262.5A CN103074758B (en) | 2011-10-25 | 2011-10-25 | Ultrasonic atomization humidification method for production of carbon fiber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110327262.5A CN103074758B (en) | 2011-10-25 | 2011-10-25 | Ultrasonic atomization humidification method for production of carbon fiber |
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| CN103074758A CN103074758A (en) | 2013-05-01 |
| CN103074758B true CN103074758B (en) | 2014-09-10 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104340764B (en) * | 2013-08-09 | 2017-09-01 | 中国石油天然气股份有限公司 | Humidifying treatment method and device for fiber withdrawal during carbonization of polyacrylonitrile protofilament for carbon fiber |
| CN104451962A (en) * | 2014-10-23 | 2015-03-25 | 吉林方大江城碳纤维有限公司 | Method for eliminating static electricity in carbon fiber production |
| CN105063994A (en) * | 2015-08-20 | 2015-11-18 | 北京化工大学 | Surface treatment method for carbon fibers |
| CN108754931A (en) * | 2018-06-01 | 2018-11-06 | 张家港天宇精梳羊毛有限公司 | A kind of wool shaping moisture regain ultrasonic wave conditioning system |
| CN117144499A (en) * | 2023-08-23 | 2023-12-01 | 中复神鹰碳纤维股份有限公司 | An ultrasonic atomized carbon fiber precursor oiling device and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0200258A3 (en) * | 1985-04-29 | 1988-02-03 | Jean Michel Anthony | Ultrasonic spraying device |
| JPS6366325A (en) * | 1986-09-02 | 1988-03-25 | Asahi Chem Ind Co Ltd | Manufacturing method of carbon fiber for high performance CFRP |
| CN100507141C (en) * | 2006-05-21 | 2009-07-01 | 淄博矿业集团有限责任公司 | Modification process of random piled pitch carbon fiber |
| CN101760807A (en) * | 2009-11-24 | 2010-06-30 | 中复神鹰碳纤维有限责任公司 | Method for reducing production of preoxidized broken filament during preparation of polyacrylonitrile-based carbon fiber |
| CN101967735B (en) * | 2010-09-17 | 2012-07-25 | 西安航科等离子体科技有限公司 | Dipping machine for producing continuous carbon fibers |
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