CN103074758A - 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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- CN103074758A CN103074758A CN2011103272625A CN201110327262A CN103074758A CN 103074758 A CN103074758 A CN 103074758A CN 2011103272625 A CN2011103272625 A CN 2011103272625A CN 201110327262 A CN201110327262 A CN 201110327262A CN 103074758 A CN103074758 A CN 103074758A
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- carbon fiber
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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 the carbon fiber production technical field, particularly a kind of ultrasonic atomization humidification method for carbon fiber production.
Background technology
Middle and later periods in 20th century, carbon fiber is with its excellent properties as fibre reinforced composites, and beginning is applied in fields such as aerospace, sports goodss.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 all there is vital impact in each step on the quality of carbon fiber.High-performance, high-quality carbon fiber require the good homogeneity of property retention and the stability of product.For producing high performance carbon fiber, material property and homogeneity thereof, each step working condition is stable in the production process, is all directly determining the final performance height of carbon fiber product.
In order to guarantee the performance of pre-oxygen silk in the 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 the carbon fiber manufacturing.
In order to reduce impregnating equipment to the mechanical damage of 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 the carbon fiber serialization production process.
But, in the above-mentioned patent documentation carbon fibre precursor has all been adopted the method for using the liquid direct impregnation, make precursor before pre-oxidation step, contain more steeping liq.On the one hand, this makes, and the steeping liq in the precursor needs higher energy consumption in the subsequent production when oven dry, has increased production cost; On the other hand, because too much liquid is to the dipping of precursor, liquid can enter precursor inside, thereby destroys to a certain extent the performance of the internal structure reduction precursor of precursor, finally reduces the performances such as TENSILE STRENGTH of carbon fiber product.
Summary of the invention
In order to overcome the shortcoming and deficiency that exists in the existing carbon fiber air-humidification method, the object of the present invention is to provide a kind of ultrasonic atomization humidification method for carbon fiber production, the method has no mechanical damage, has improved the carbon fiber TENSILE STRENGTH to carbon fiber and saves production cost.
Purpose of the present invention is achieved through the following technical solutions:
A kind of ultrasonic atomization humidification method for carbon fiber production may further comprise the steps:
(1) ultrasonic atomization: humidification liquid sonic oscillation atomizing is droplet, and the relative humidity in the frequency by regulating sonic oscillation and the addition control atomizing humidifier of humidification liquid is 30-99%;
(2) humidification: with carbon fiber humidification in atomizing humidifier, to the carbon fiber water capacity be 0.5-10%.
The described process with humidification liquid ultrasonic atomizatio of step (1) can be to carry out in atomizing humidifier; Also can be outside atomizing humidifier, to carry out, and then droplet is delivered to atomizing humidifier;
The described humidification liquid of step (1) is a kind of in pure water, running water or the polyether modified silicon oil aqueous solution;
The mass concentration of polyether modified silicon oil is 2-15% in the described polyether modified silicon oil aqueous solution;
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 the air-humidification method of the present invention, water capacity is lower behind the carbon fiber humidification, and carbon fiber energy consumption when oven dry is also low in the subsequent production, more saves production cost than existing production technology; And the droplet that ultrasonic atomization produces behind the humidification 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; reduced carbon fiber mechanical damage in process of production; thereby protected to greatest extent the intensity of carbon fiber in the subsequent production process, can not reduce, finally improved the performances such as TENSILE STRENGTH of carbon fiber product.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment, but embodiments of the present invention are not limited to this.
Embodiment 1
A kind of ultrasonic atomization humidification method for polyacrylonitrile-based carbon fibre production, its step is as follows:
(1) ultrasonic atomization: the atomizing of pure water sonic oscillation is droplet, and making the relative humidity in the atomizing humidifier is 30%;
(2) humidification: with polyacrylonitrile base carbon fiber precursors humidification in atomizing humidifier, adding to the precursor water capacity is 0.5%.
Embodiment 2
A kind of ultrasonic atomization humidification method for polyacrylonitrile-based carbon fibre production, its step is as follows:
(1) ultrasonic atomization: be that the atomizing of 2% polyether modified silicon oil aqueous solution sonic oscillation is droplet with mass concentration, making the relative humidity in the atomizing humidifier is 50%;
(2) humidification: with polyacrylonitrile base carbon fiber precursors humidification in atomizing humidifier, adding to the precursor water capacity is 0.7%.
Embodiment 3
A kind of ultrasonic atomization humidification method for polyacrylonitrile-based carbon fibre production, its step is as follows:
(1) ultrasonic atomization: be that the atomizing of 10% polyether modified silicon oil aqueous solution sonic oscillation is droplet with mass concentration, making the relative humidity in the atomizing humidifier is 70%;
(2) humidification: with polyacrylonitrile base carbon fiber precursors humidification in atomizing humidifier, adding to the precursor water capacity is 4%.
Embodiment 4
A kind of ultrasonic atomization humidification method for polyacrylonitrile-based carbon fibre production, its step is as follows:
(1) ultrasonic atomization: be that the atomizing of 15% polyether modified silicon oil aqueous solution sonic oscillation is droplet with mass concentration, making the relative humidity in the atomizing humidifier is 95%;
(2) humidification: with polyacrylonitrile base carbon fiber precursors humidification in atomizing humidifier, adding to the precursor water capacity is 8%.
Embodiment 5
A kind of ultrasonic atomization humidification method for polyacrylonitrile-based carbon fibre production, its step is as follows:
(1) ultrasonic atomization: the atomizing of running water sonic oscillation is droplet, and making the relative humidity in the atomizing humidifier is 99%;
(2) humidification: with polyacrylonitrile base carbon fiber precursors humidification in atomizing humidifier, adding to the precursor water capacity is 10%.
Above-described embodiment is the better 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 the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. one kind is used for the ultrasonic atomization humidification method that carbon fiber is produced, and it is characterized in that may further comprise the steps:
(1) ultrasonic atomization: humidification liquid sonic oscillation atomizing is droplet, and the relative humidity in the frequency by regulating sonic oscillation and the addition control atomizing humidifier of humidification liquid is 30-99%;
(2) humidification: with carbon fiber humidification in atomizing humidifier, to the carbon fiber water capacity be 0.5-10%.
2. ultrasonic atomization humidification method of producing for carbon fiber according to claim 1, it is characterized in that: the described process with humidification liquid ultrasonic atomizatio of step (1) is to carry out in atomizing humidifier, or be outside atomizing humidifier, to carry out, and then droplet is delivered to atomizing humidifier.
3. ultrasonic atomization humidification method of producing for carbon fiber according to claim 1 is characterized in that: the described humidification liquid of step (1) is a kind of in pure water, running water or the polyether modified silicon oil aqueous solution.
4. ultrasonic atomization humidification method of producing for carbon fiber according to claim 3, it is characterized in that: the mass concentration of polyether modified silicon oil is 2-15% in the described polyether modified silicon oil aqueous solution.
5. ultrasonic atomization humidification method of producing for carbon fiber according to claim 1, it is characterized in that: the relative humidity in the described atomizing humidifier of step (1) is 50-95%.
6. ultrasonic atomization humidification method of producing for carbon fiber according to claim 1, it is characterized in that: the described carbon fiber of step (2) is polyacrylonitrile-based carbon fibre.
7. ultrasonic atomization humidification method of producing for carbon fiber according to claim 1, it is characterized in that: the water capacity of the described carbon fiber of step (2) is 0.7-8%.
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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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| CN201110327262.5A CN103074758B (en) | 2011-10-25 | 2011-10-25 | Ultrasonic atomization humidification method for production of carbon fiber |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104340764A (en) * | 2013-08-09 | 2015-02-11 | 中国石油天然气股份有限公司 | Humidification processing method and device for filament retreat during carbonization of polyacrylonitrile protofilaments for carbon fibers |
| 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 |
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| CN86102943A (en) * | 1985-04-29 | 1986-11-19 | 简·迈克尔·安东尼 | Ultrasonic spraying device |
| JPS6366325A (en) * | 1986-09-02 | 1988-03-25 | Asahi Chem Ind Co Ltd | Production of carbon fiber for high-performance cfrp |
| CN101074542A (en) * | 2006-05-21 | 2007-11-21 | 淄博矿业集团有限责任公司 | Method for modifying and producing waste asphalt bamboo fibre and its apparatus |
| 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 |
| CN101967735A (en) * | 2010-09-17 | 2011-02-09 | 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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2011
- 2011-10-25 CN CN201110327262.5A patent/CN103074758B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102943A (en) * | 1985-04-29 | 1986-11-19 | 简·迈克尔·安东尼 | Ultrasonic spraying device |
| JPS6366325A (en) * | 1986-09-02 | 1988-03-25 | Asahi Chem Ind Co Ltd | Production of carbon fiber for high-performance cfrp |
| CN101074542A (en) * | 2006-05-21 | 2007-11-21 | 淄博矿业集团有限责任公司 | Method for modifying and producing waste asphalt bamboo fibre and its apparatus |
| 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 |
| CN101967735A (en) * | 2010-09-17 | 2011-02-09 | 西安航科等离子体科技有限公司 | Dipping machine for producing continuous carbon fibers |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104340764A (en) * | 2013-08-09 | 2015-02-11 | 中国石油天然气股份有限公司 | Humidification processing method and device for filament retreat during carbonization of polyacrylonitrile protofilaments for carbon fibers |
| 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 |
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| CN103074758B (en) | 2014-09-10 |
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