CN104451962A - Method for eliminating static electricity in carbon fiber production - Google Patents
Method for eliminating static electricity in carbon fiber production Download PDFInfo
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- CN104451962A CN104451962A CN201410578560.5A CN201410578560A CN104451962A CN 104451962 A CN104451962 A CN 104451962A CN 201410578560 A CN201410578560 A CN 201410578560A CN 104451962 A CN104451962 A CN 104451962A
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Abstract
The invention relates to a method for eliminating static electricity in carbon fiber production. The method is characterized by comprising the steps of adopting ultrasonic atomizing water in the filament releasing working procedure, or feeding a destaticizer with the concentration being 1%; carrying out electronic high-frequency oscillation by ultrasonic wave with the oscillation frequency of 1.7MHz or 2.4MHz and scattering a liquid water molecule structure to generate natural flowing water mist, and eliminating the electrostatic charges of precursor fiber by a great deal of negative ions released in the atomization process; in the preoxidation working procedure, converting 200V voltage into high voltage being more than or equal to 3KV by an air ion generator, generating corona around a needle tip by a plurality of small electrode needles, wherein the corona is used for discharging the compressed air, so that ion beams can be produced; aligning the ion beams with the charged precursor fiber bundle to further neutralize the electrostatic charges and enable the static electricity generated by friction to be eliminated. The method is scientific and reasonable, the static electricity elimination effect is good, the production is safe, and the quality of carbon fiber products can be improved.
Description
Technical field
The present invention relates to the method eliminating electrostatic, is the removing method of electrostatic during a kind of carbon fiber is produced.
Background technology
Carbon fiber is one of three large high-tech new materials, and purposes is extremely extensive.Carbon fiber production line is made up of many production equipments, in production process, through putting silk, pre-oxidation, low-temperature carbonization, high temperature cabonization, then through operations such as surface treatment, gluing, oven dry, receipts silks, the filament of the one-tenth axle produced, is referred to as carbon fiber product.
The raw material producing carbon fiber is referred to as precursor, and namely polyacrylonitrile (PAN) fiber, is commonly called as " acrylic fibers ".A kind of by large molecular organic matter.In process of production, precursor puts silk and pre-oxidation operation in process, through and thread supplying machine unreel with the deflector roll of each deflector roll and several pre-oxidation furnace guide wheel unit and friction, and the friction of thermal cycle wind and tow in stove, capital produces a large amount of electrostatic charges, and its maximum electrical potential intensity is more than 230 KV.Along with the operation of producing, then the harm that a large amount of electrostatic constantly produce, accumulated cause is:
One is easy breaking out of fire: now, and the precursor run in oxidation furnace has more than 220 kilogram, and along with the continuous rising of each oxidation furnace furnace temperature, precursor also ceaselessly to do the exothermic reaction of cyclisation, oxidation and dehydrogenation in stove.Running up to the high-temperature hot energy that a certain amount of electrostatic produces when sparking, the precursor carrying out exothermic reaction can be lighted, breaking out of fire;
Two is that friction fracture of wire occurs: a branch of 12K precursor is made up of the monofilament of 1.2 ten thousand 7 μm of diameters, and this rhizoid beam diameter is about 2 ~ 3mm usually, but under electrostatic (electrostatic charge of the same race is repelled mutually) effect, this synnema diameter can become greater to about 100mm.Should the fibre bundle of interval orderly function in stove, due to electrostatic, turing large diameter tow can laminate mutually mutually, and phase mutual friction between tow under the hot wind action of stove Inner eycle, tangles, cause and hinder silk, fracture of wire, cause carbon fiber mechanical index and presentation quality sharply to decline.
The removing method two kinds substantially of electrostatic in the carbon fiber production of home and abroad: a kind of is by ground connection good for each deflector roll, although this method can lead partial electrostatic lotus, because precursor is non-conductor, so still there is quite most of electrostatic to retain; Two kinds is after putting wire process, lays a leaching silk groove, use water-soaked precursor before entering oxidation furnace, though the electrostatic that thread supplying machine produces can be removed by this method, but can't resolve the electrostatic produced in oxidation furnace is produced, and, also adds additional the energy resource consumption caused for drying precursor.
Summary of the invention
The object of the invention is, overcome the deficiencies in the prior art, provide a kind of methodological science reasonable, eliminate electrostatic efficiency good, production safety, the removing method of electrostatic in the carbon fiber production of carbon fiber product quality can be improved.
The object of the invention is to be realized by following technical scheme: a kind of carbon fiber produce in the removing method of electrostatic, it is characterized in that, it comprises following content:
1) electrostatic on wire process elimination thread supplying machine precursor is being put
Adopt ultrasonic atomized water, also the destaticizer that concentration is 0.1% can be added, utilize the ultrasonic electronic high frequency oscillation that frequency of oscillation is 1.7MHz or 2.4MHz, liquid water molecules structure is broken up and produces the elegant water smoke of nature, in atomization process, anions a large amount of for release is eliminated simultaneously precursor with electrostatic charge; Specifically, the spray chamber of stainless steel structure is equipped with between thread supplying machine and pre-oxidation furnace, spray chamber is closed except tow is imported and exported, the adjusting device that side is furnished with adjustable openings size imported and exported by tow, and fore side and driving side are all provided with can open valve, and valve is provided with clear glass, be convenient to technological operation and observation, bottom is provided with the nozzle of spraying system, and fog sprays from bottom to top, and condensed water returns Ultrasonic atomization generator by wall through bottom spray mouth; Water atomization adopts four Ultrasonic atomization generator, every two is one group, two groups are used alternatingly, SECO is carried out by PLC, spray amount is adjustable, and separate unit adds moisture 12Kg/h, and the mist particle diameter exported is 1-10 μ, maximum relative humidity is 99%, and atomized water uses demineralized water or treated water;
2) pre-oxidation operation eliminates fricative electrostatic
The orderly raw tow brought by thread supplying machine by each deflector roll of guide wheel unit is sent into 6 oxidation furnaces and is carried out pre-oxidation treatment, furnace temperature is controlled by evenly there being the thermal cycle wind of control, generator of aeroion is adopted 220V to be become >=3KV high voltage, 3KV high voltage is by the several small electrode pins on generator of aeroion, corona is produced around needle point, corona discharges to compressed air thus produces ion beam, ion beam aims at charged raw tow, and then electrostatic charge is neutralized, fricative electrostatic is eliminated.
The model of described Ultrasonic atomization generator is AZS-12.
The model of described generator of aeroion is SJ-H180A.
In carbon fiber production of the present invention, the removing method of electrostatic has methodological science rationally, and eliminate electrostatic efficiency good, production safety, can improve carbon fiber product quality.After testing, time drier in the winter time, carbon fiber production line easily produces the static value of putting wire process and pre-oxidation operation of electrostatic all at below 20V, ensure that production safety is run, substantially increases product quality simultaneously.
Accompanying drawing explanation
Fig. 1 is the frock schematic diagram putting wire process;
Fig. 2 is the frock schematic diagram of pre-oxidation operation.
Detailed description of the invention
The invention will be further described to utilize drawings and Examples below.
See figures.1.and.2, the removing method of electrostatic in carbon fiber production of the present invention, comprises following content:
2 are putting the electrostatic on wire process elimination thread supplying machine precursor
Adopt ultrasonic atomized water, also the destaticizer that concentration is 0.1% can be added, utilize the ultrasonic electronic high frequency oscillation that frequency of oscillation is 1.7MHz or 2.4MHz, liquid water molecules structure is broken up and produces the elegant water smoke of nature, in atomization process, anions a large amount of for release is eliminated simultaneously precursor with electrostatic charge; Specifically, the spray chamber of stainless steel structure is equipped with between thread supplying machine and pre-oxidation furnace, spray chamber is closed except tow is imported and exported, the adjusting device that side is furnished with adjustable openings size imported and exported by tow, and fore side and driving side are all provided with can open valve, and valve is provided with clear glass, be convenient to technological operation and observation, bottom is provided with the nozzle of spraying system, and fog sprays from bottom to top, and condensed water returns Ultrasonic atomization generator by wall through bottom spray mouth; Water atomization adopts four Ultrasonic atomization generator, every two is one group, two groups are used alternatingly, SECO is carried out by PLC, spray amount is adjustable, and separate unit adds moisture 12Kg/h, and the mist particle diameter exported is 1-10 μ, maximum relative humidity is 99%, and atomized water uses demineralized water or treated water;
2) pre-oxidation operation eliminates fricative electrostatic
The orderly raw tow brought by thread supplying machine by each deflector roll of guide wheel unit is sent into 6 oxidation furnaces and is carried out pre-oxidation treatment, furnace temperature is controlled by evenly there being the thermal cycle wind of control, generator of aeroion is adopted 220V to be become >=3KV high voltage, 3KV high voltage is by the several small electrode pins on generator of aeroion, corona is produced around needle point, corona discharges to compressed air thus produces ion beam, ion beam aims at charged raw tow, and then electrostatic charge is neutralized, fricative electrostatic is eliminated.
Described Ultrasonic atomization generator adopts model to be AZS-12 commercially available prod.
Described generator of aeroion adopts model to be SJ-H180A commercially available prod.
Claims (3)
1. carbon fiber produce in the removing method of electrostatic, it is characterized in that, it comprises following content:
1) electrostatic on wire process elimination thread supplying machine precursor is being put
Adopt ultrasonic atomized water, also the destaticizer that concentration is 0.1% can be added, utilize the ultrasonic electronic high frequency oscillation that frequency of oscillation is 1.7MHz or 2.4MHz, liquid water molecules structure is broken up and produces the elegant water smoke of nature, in atomization process, anions a large amount of for release is eliminated simultaneously precursor with electrostatic charge; Specifically, the spray chamber of stainless steel structure is equipped with between thread supplying machine and pre-oxidation furnace, spray chamber is closed except tow is imported and exported, the adjusting device that side is furnished with adjustable openings size imported and exported by tow, and fore side and driving side are all provided with can open valve, and valve is provided with clear glass, be convenient to technological operation and observation, bottom is provided with the nozzle of spraying system, and fog sprays from bottom to top, and condensed water returns Ultrasonic atomization generator by wall through bottom spray mouth; Water atomization adopts four Ultrasonic atomization generator, every two is one group, two groups are used alternatingly, SECO is carried out by PLC, spray amount is adjustable, and separate unit adds moisture 12Kg/h, and the mist particle diameter exported is 1-10 μ, maximum relative humidity is 99%, and atomized water uses demineralized water or treated water;
2) pre-oxidation operation eliminates fricative electrostatic
The orderly raw tow brought by thread supplying machine by each deflector roll of guide wheel unit is sent into 6 oxidation furnaces and is carried out pre-oxidation treatment, furnace temperature is controlled by evenly there being the thermal cycle wind of control, generator of aeroion is adopted 220V to be become >=3KV high voltage, 3KV high voltage is by the several small electrode pins on generator of aeroion, corona is produced around needle point, corona discharges to compressed air thus produces ion beam, ion beam aims at charged raw tow, and then electrostatic charge is neutralized, fricative electrostatic is eliminated.
2. carbon fiber according to claim 1 produce in the removing method of electrostatic, it is characterized in that, the model of described Ultrasonic atomization generator is AZS-12.
3. carbon fiber according to claim 1 produce in the removing method of electrostatic, it is characterized in that, the model of described generator of aeroion is SJ-H180A.
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| CN201410578560.5A CN104451962A (en) | 2014-10-23 | 2014-10-23 | Method for eliminating static electricity in carbon fiber production |
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| CN201410578560.5A CN104451962A (en) | 2014-10-23 | 2014-10-23 | Method for eliminating static electricity in carbon fiber production |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104955256A (en) * | 2015-07-06 | 2015-09-30 | 上海金智达复合材料有限公司 | Composite material bonding device static eliminator |
| CN104963046A (en) * | 2015-06-30 | 2015-10-07 | 刘海明 | Static-electricity-free spinning machine |
| CN106006159A (en) * | 2015-03-26 | 2016-10-12 | 柯尼卡美能达株式会社 | Recording medium processor, image forming apparatus, and image forming system |
| CN110803864A (en) * | 2019-11-25 | 2020-02-18 | 衡阳开拓光电科技有限公司 | Method for removing static electricity of ring-wound optical fiber |
| CN111455481A (en) * | 2020-04-16 | 2020-07-28 | 莱芜富新纤维制品有限公司 | Short fiber filament forming machine |
| WO2020203531A1 (en) * | 2019-04-03 | 2020-10-08 | 東レ株式会社 | Method for producing flame-proof fiber bundle, and method for producing carbon fiber bundle |
| CN113038676A (en) * | 2021-03-08 | 2021-06-25 | 高梵(浙江)信息技术有限公司 | A destaticizing equipment for eiderdown disinfection preliminary treatment |
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| CN103484975A (en) * | 2013-08-16 | 2014-01-01 | 肖颖 | Static-removing device for carbon fiber product line |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106006159A (en) * | 2015-03-26 | 2016-10-12 | 柯尼卡美能达株式会社 | Recording medium processor, image forming apparatus, and image forming system |
| CN106006159B (en) * | 2015-03-26 | 2019-06-07 | 柯尼卡美能达株式会社 | Recording medium treatment device, image forming apparatus and image formation system |
| CN104963046A (en) * | 2015-06-30 | 2015-10-07 | 刘海明 | Static-electricity-free spinning machine |
| CN104955256A (en) * | 2015-07-06 | 2015-09-30 | 上海金智达复合材料有限公司 | Composite material bonding device static eliminator |
| WO2020203531A1 (en) * | 2019-04-03 | 2020-10-08 | 東レ株式会社 | Method for producing flame-proof fiber bundle, and method for producing carbon fiber bundle |
| CN110803864A (en) * | 2019-11-25 | 2020-02-18 | 衡阳开拓光电科技有限公司 | Method for removing static electricity of ring-wound optical fiber |
| CN111455481A (en) * | 2020-04-16 | 2020-07-28 | 莱芜富新纤维制品有限公司 | Short fiber filament forming machine |
| CN111455481B (en) * | 2020-04-16 | 2021-09-07 | 莱芜富新纤维制品有限公司 | Short fiber filament forming machine |
| CN113038676A (en) * | 2021-03-08 | 2021-06-25 | 高梵(浙江)信息技术有限公司 | A destaticizing equipment for eiderdown disinfection preliminary treatment |
| CN113038676B (en) * | 2021-03-08 | 2023-08-15 | 高梵(浙江)信息技术有限公司 | Static electricity removing equipment for down disinfection pretreatment |
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Application publication date: 20150325 |