CN104195766A - Drying method for carbon fiber having been subjected to sizing - Google Patents
Drying method for carbon fiber having been subjected to sizing Download PDFInfo
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- CN104195766A CN104195766A CN201410451043.1A CN201410451043A CN104195766A CN 104195766 A CN104195766 A CN 104195766A CN 201410451043 A CN201410451043 A CN 201410451043A CN 104195766 A CN104195766 A CN 104195766A
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- drying
- carbon fibre
- carbon fiber
- fibre tow
- oven
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- 238000001035 drying Methods 0.000 title claims abstract description 115
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 40
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 40
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000004513 sizing Methods 0.000 title claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 94
- 239000000835 fiber Substances 0.000 claims description 93
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 86
- 238000009955 starching Methods 0.000 claims description 37
- 238000007602 hot air drying Methods 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- 230000005855 radiation Effects 0.000 claims description 2
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 238000000034 method Methods 0.000 description 9
- 238000007598 dipping method Methods 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010338 mechanical breakdown Methods 0.000 description 1
- 239000013047 polymeric layer Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Inorganic Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a drying method for carbon fiber having been subjected to sizing. First, tows of the carbon fiber having been subjected to sizing are pre-dried in a contact mode through a drying roller, the wrap angle of the tows of the carbon fiber on the drying roller is larger than 180 degrees, the contact time ranges from 10 s to 60 s, the surface temperature of the drying roller ranges from 100 DEG C to 150 DEG C, the tows, with the water content smaller than or equal to 1%, of the carbon fiber are obtained after pre-drying, and sizing agent is made to form film on the surfaces of the tows of the carbon fiber; then, the pre-dried tows of the carbon fiber penetrate through a drying oven to be dried in a non-contact mode, the temperature in the drying oven ranges from 100 DEG C to 250 DEG C, then, the tows, with the water content smaller than or equal to 0.1%, of the carbon fiber are obtained, the resin film can be drier and more comfortable, and the tows of the carbon fiber can be kept flat and thus are convenient to lay flat and wind. The dried tows of the carbon fiber is good in quality, hardness and widening performance of the tows can be enhanced, broken filaments are reduced, and large-scale production can be achieved.
Description
Technical field
The present invention relates to a kind of drying means, particularly the drying means after a kind of carbon fiber starching.
Background technology
In process of production, carbon fiber, after high low-temperature carbonization and surface treatment, in order to improve the transmission efficiency of fiber interface layer, is further modified fiber surface to carbon fiber, can carry out starching processing to carbon filament, at fiber surface, applies one layer of polymeric layer.Starching can be protected fiber on the one hand, prevents the airborne impurity of fibers adsorption and moisture, protection fiber surface activity group; There is on the other hand boundling function, be convenient to processing and the use in rear road; Improve the wetting property of fiber simultaneously, be convenient to resin-dipping, reduce the preparation time of composite, improve the quality of products.Dry after carbon fiber starching is for the moisture drying in silk after starching, makes resin in fiber surface film forming, gives tow certain convergence, and increases the surface gloss of silk, and lubricity, keeps good stiffness, reduces lousiness.But existing drying equipment has a lot of defects, mainly contain following some:
(1) roll body is many, and fiber turns to too much, increases the resistance in tow running, and very easily curling round the roll when by godet roller causes fracture of wire and increases lousiness amount, wastes greatlyr, affects the receipts silk rate of carbon filament;
(2) equipment is complicated, and floor space is large, is unfavorable for large-scale production;
(3) existing equipment is all mainly to adopt electrical heating, and its energy consumption is high, and the easy loss of heating tube, changes difficulty;
(4) roll body is too many, easily produces mechanical breakdown, and maintenance and cost of upkeep are high;
(5) carbon fiber wire is more by guide roller, larger on the hardness of silk and autgmentability impact;
(6) existing oven dry adopts vertical drying mode, and vertical drying must be closed furnace roof portion, so just causes steam to be difficult for distributing, and affects the drying effect of tow; Bad sealing can affect the stability of temperature again, and is closed for a long time, easily accumulates lousiness and tar, initiation fire.
Summary of the invention
Technical problem to be solved by this invention is for the deficiencies in the prior art, provides a kind of method simple, the drying means after the good carbon fiber starching for the treatment of effect.
Technical problem to be solved by this invention is to realize by following technical scheme, the present invention is the drying means after a kind of carbon fiber starching, be characterized in, its step is as follows: first the carbon fibre tow after starching is carried out to contact prebake by drying drum, the cornerite of carbon fibre tow on drying drum is greater than 180 °, be 10-60S contact time, the surface temperature of drying drum is 100-150 ℃, after prebake, obtain the carbon fibre tow of moisture≤1%, and make sizing agent at carbon fibre tow surface filming; After the carbon fibre tow after predrying is carried out to contactless oven dry through drying oven, temperature in drying oven is 100-250 ℃, after obtain the carbon fibre tow of moisture≤0.1%, make resin molding dryer and comfortableer, carbon fibre tow can keep flat, is convenient to pave and reel.
In drying means technical scheme after above-described carbon fiber starching of the present invention: the drying time of described carbon fibre tow in drying oven is 1-3min.
In drying means technical scheme after above-described carbon fiber starching of the present invention: the mode of heating of described drying drum is Steam Heating, electrical heating or oil heating.
In drying means technical scheme after above-described carbon fiber starching of the present invention: described drying oven is hot-air drying stove or heat radiation drying machine.
In drying means technical scheme after above-described carbon fiber starching of the present invention: the hot blast in described hot-air drying stove is circulating air.
In drying means technical scheme after above-described carbon fiber starching of the present invention: described hot-air drying stove is horizontal hot air drying oven or Vertical Heat wind stove for drying use.
In drying means technical scheme after above-described carbon fiber starching of the present invention: be provided with carbon fibre tow apparatus for widen between drying drum and drying oven.Carbon fibre tow apparatus for widen is the disclosed any apparatus for widen of the present invention that is applicable to of prior art.
The present invention uses drying drum to carry out contact prebake, can make material adaptable, the degree of drying of product evenly, non-stick resin, and easily clear up; Drying drum is simple in structure, and floor space is little, is easy to build and maintenance, can not change the primary characteristic of drying product during oven dry, keeps its shape and color and luster; In addition high to utilization efficiency of heat energy, save energy, economical rationality.
Use drying oven to carry out contactless oven dry, furnace temperature raises fast,, consume energy low, can save electric weight, the tow lousiness obtaining is few, and glossiness is good, and hardness is high.
Compared with prior art; it is drying equipment that the present invention adopts combination; make to carry out successively contact drying and contactless dry after carbon fibre tow starching; make its final moisture≤0.1%; the carbon fiber wire beam quality obtaining after dry is good; tow hardness and broadening performance strengthen, and lousiness reduces, and can accomplish scale production.
The specific embodiment
Below further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not form the restriction to its right.
Embodiment 1, the drying means after a kind of carbon fiber starching, and its step is as follows:
Surface treatment carbon fibre tow dipping sizing agent later, after compression roller is removed excessive moisture, first by steam heated formula drying drum, carry out contact prebake, the cornerite of carbon fibre tow on drying drum is greater than 180 °, be 50S contact time, the surface temperature of drying drum is 120 ℃, obtains the carbon fibre tow of moisture≤1% after prebake, and makes sizing agent at carbon fibre tow surface filming.Between steam heated formula drying drum and horizontal hot air drying oven, be provided with carbon fibre tow apparatus for widen.By the carbon fibre tow process apparatus for widen broadening after predrying, through horizontal hot air drying oven, carry out contactless oven dry afterwards, temperature in horizontal hot air drying oven is 200 ℃, be 1min drying time, after obtain the carbon fibre tow of moisture≤0.1%, make resin molding dryer and comfortableer, carbon fibre tow can keep flat, is convenient to pave and reel.
Embodiment 2, the drying means after a kind of carbon fiber starching, and its step is as follows:
Surface treatment carbon fibre tow dipping sizing agent later, after compression roller is removed excessive moisture, first by steam heated formula drying drum, carry out contact prebake, the cornerite of carbon fibre tow on drying drum is greater than 180 °, be 55S contact time, the surface temperature of drying drum is 120 ℃, obtains the carbon fibre tow of moisture≤1% after prebake, and makes sizing agent at carbon fibre tow surface filming.Between steam heated formula drying drum and horizontal hot air drying oven, be provided with carbon fibre tow apparatus for widen.By the carbon fibre tow process apparatus for widen broadening after predrying, through horizontal hot air drying oven, carry out contactless oven dry afterwards, temperature in horizontal hot air drying oven is 180 ℃, be 1.5min drying time, after obtain the carbon fibre tow of moisture≤0.1%, make resin molding dryer and comfortableer, carbon fibre tow can keep flat, is convenient to pave and reel.
Embodiment 3, the drying means after a kind of carbon fiber starching, and its step is as follows:
Surface treatment carbon fibre tow dipping sizing agent later, after compression roller is removed excessive moisture, first by steam heated formula drying drum, carry out contact prebake, the cornerite of carbon fibre tow on drying drum is greater than 180 °, be 50S contact time, the surface temperature of drying drum is 120 ℃, obtains the carbon fibre tow of moisture≤1% after prebake, and makes sizing agent at carbon fibre tow surface filming.Between steam heated formula drying drum and horizontal hot air drying oven, be provided with carbon fibre tow apparatus for widen.By the carbon fibre tow process apparatus for widen broadening after predrying, through horizontal hot air drying oven, carry out contactless oven dry afterwards, temperature in horizontal hot air drying oven is 150 ℃, be 2min drying time, after obtain the carbon fibre tow of moisture≤0.1%, make resin molding dryer and comfortableer, carbon fibre tow can keep flat, is convenient to pave and reel.
Embodiment 4, the drying means after a kind of carbon fiber starching, and its step is as follows:
First the carbon fibre tow after starching is carried out to contact prebake by steam heated formula drying drum, the cornerite of carbon fibre tow on drying drum is greater than 180 °, be 45S contact time, the surface temperature of drying drum is 130 ℃, after prebake, obtain the carbon fibre tow of moisture≤1%, and make sizing agent at carbon fibre tow surface filming.Between steam heated formula drying drum and horizontal hot air drying oven, be provided with carbon fibre tow apparatus for widen.By the carbon fibre tow process apparatus for widen broadening after predrying, through horizontal hot air drying oven, carry out contactless oven dry afterwards, temperature in horizontal hot air drying oven is 130 ℃, be 2min drying time, after obtain the carbon fibre tow of moisture≤0.1%, make resin molding dryer and comfortableer, carbon fibre tow can keep flat, is convenient to pave and reel.
Embodiment 5, the drying means after a kind of carbon fiber starching, and its step is as follows:
First the carbon fibre tow after starching is carried out to contact prebake by steam heated formula drying drum, the cornerite of carbon fibre tow on drying drum is greater than 180 °, be 40S contact time, the surface temperature of drying drum is 130 ℃, after prebake, obtain the carbon fibre tow of moisture≤1%, and make sizing agent at carbon fibre tow surface filming.Between steam heated formula drying drum and horizontal hot air drying oven, be provided with carbon fibre tow apparatus for widen.By the carbon fibre tow process apparatus for widen broadening after predrying, through Vertical Heat wind stove for drying use, carry out contactless oven dry afterwards, temperature in Vertical Heat wind stove for drying use is 110 ℃, be 2.5min drying time, after obtain the carbon fibre tow of moisture≤0.1%, make resin molding dryer and comfortableer, carbon fibre tow can keep flat, is convenient to pave and reel.
Embodiment 6, the drying means after a kind of carbon fiber starching, and its step is as follows:
First the carbon fibre tow after starching is carried out to contact prebake by steam heated formula drying drum, the cornerite of carbon fibre tow on drying drum is greater than 180 °, be 35S contact time, the surface temperature of drying drum is 140 ℃, after prebake, obtain the carbon fibre tow of moisture≤1%, and make sizing agent at carbon fibre tow surface filming.Between steam heated formula drying drum and horizontal hot air drying oven, be provided with carbon fibre tow apparatus for widen.By the carbon fibre tow process apparatus for widen broadening after predrying, through horizontal hot air drying oven, carry out contactless oven dry afterwards, temperature in horizontal hot air drying oven is 130 ℃, be 2min drying time, after obtain the carbon fibre tow of moisture≤0.1%, make resin molding dryer and comfortableer, carbon fibre tow can keep flat, is convenient to pave and reel.
Embodiment 7, the drying means after a kind of carbon fiber starching, and its step is as follows:
First the carbon fibre tow after starching is carried out to contact prebake by steam heated formula drying drum, the cornerite of carbon fibre tow on drying drum is greater than 180 °, be 30S contact time, the surface temperature of drying drum is 140 ℃, after prebake, obtain the carbon fibre tow of moisture≤1%, and make sizing agent at carbon fibre tow surface filming.Between steam heated formula drying drum and horizontal hot air drying oven, be provided with carbon fibre tow apparatus for widen.By the carbon fibre tow process apparatus for widen broadening after predrying, through horizontal hot air drying oven, carry out contactless oven dry afterwards, temperature in horizontal hot air drying oven is 110 ℃, be 1.5min drying time, after obtain the carbon fibre tow of moisture≤0.1%, make resin molding dryer and comfortableer, carbon fibre tow can keep flat, is convenient to pave and reel.
Embodiment 8, the drying means after a kind of carbon fiber starching, and its step is as follows:
First the carbon fibre tow after starching is carried out to contact prebake by steam heated formula drying drum, the cornerite of carbon fibre tow on drying drum is greater than 180 °, be 20S contact time, the surface temperature of drying drum is 140 ℃, after prebake, obtain the carbon fibre tow of moisture≤1%, and make sizing agent at carbon fibre tow surface filming.After the carbon fibre tow after predrying is carried out to contactless oven dry through Vertical Heat wind stove for drying use, temperature in Vertical Heat wind stove for drying use is 110 ℃, be 1min drying time, after obtain the carbon fibre tow of moisture≤0.1%, make resin molding dryer and comfortableer, carbon fibre tow can keep flat, is convenient to pave and reel.
The performance of the dry carbon fibre tow obtaining of embodiment 1-8 is compared, and result is as shown in the table:
Claims (7)
1. the drying means after a carbon fiber starching, it is characterized in that, its step is as follows: first the carbon fibre tow after starching is carried out to contact prebake by drying drum, the cornerite of carbon fibre tow on drying drum is greater than 180 °, be 10-60S contact time, the surface temperature of drying drum is 100-150 ℃, obtains the carbon fibre tow of moisture≤1% after prebake, and makes sizing agent at carbon fibre tow surface filming; After the carbon fibre tow after predrying is carried out to contactless oven dry through drying oven, temperature in drying oven is 100-250 ℃, after obtain the carbon fibre tow of moisture≤0.1%, make resin molding dryer and comfortableer, carbon fibre tow can keep flat, is convenient to pave and reel.
2. the drying means after carbon fiber starching according to claim 1, is characterized in that: the drying time of described carbon fibre tow in drying oven is 1-3min.
3. the drying means after carbon fiber starching according to claim 1, is characterized in that: the mode of heating of described drying drum is Steam Heating, electrical heating or oil heating.
4. the drying means after carbon fiber starching according to claim 1, is characterized in that: described drying oven is hot-air drying stove or heat radiation drying machine.
5. the drying means after carbon fiber starching according to claim 4, is characterized in that: the hot blast in described hot-air drying stove is circulating air.
6. the drying means after carbon fiber starching according to claim 4, is characterized in that: described hot-air drying stove is horizontal hot air drying oven or Vertical Heat wind stove for drying use.
7. the drying means after carbon fiber starching according to claim 1, is characterized in that: between drying drum and drying oven, be provided with carbon fibre tow apparatus for widen.
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| CN201410451043.1A CN104195766B (en) | 2014-09-05 | 2014-09-05 | Drying means after a kind of carbon fiber starching |
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| CN201410451043.1A CN104195766B (en) | 2014-09-05 | 2014-09-05 | Drying means after a kind of carbon fiber starching |
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| CN104195766B CN104195766B (en) | 2016-04-20 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104562504A (en) * | 2014-12-18 | 2015-04-29 | 苏州市吴中区郭巷旭宇羊毛衫加工场 | Drying room structure for sizing machine |
| CN104674485A (en) * | 2015-02-11 | 2015-06-03 | 广州金发碳纤维新材料发展有限公司 | Splitting shaping device and splitting shaping method of ultrathin carbon fiber bundle |
| CN105544119A (en) * | 2015-12-04 | 2016-05-04 | 镇江奥立特机械制造有限公司 | Carbon fiber sizing drying technology |
| WO2016117422A1 (en) * | 2015-01-21 | 2016-07-28 | 東レ株式会社 | Sizing agent-coated carbon fiber bundle, method for manufacturing same, prepreg, and carbon fiber-reinforced composite material |
| CN108004621A (en) * | 2016-10-28 | 2018-05-08 | 中国石油化工股份有限公司 | A kind of polyamide resin resin-based composite carbon fiber and preparation method thereof |
| CN109680439A (en) * | 2018-12-08 | 2019-04-26 | 英鸿纳米科技股份有限公司 | A kind of carbon fibre tow drying equipment after starching |
| CN112048854A (en) * | 2020-09-11 | 2020-12-08 | 江苏恒神股份有限公司 | Carbon fiber bundle for winding forming and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104562504A (en) * | 2014-12-18 | 2015-04-29 | 苏州市吴中区郭巷旭宇羊毛衫加工场 | Drying room structure for sizing machine |
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| WO2016117422A1 (en) * | 2015-01-21 | 2016-07-28 | 東レ株式会社 | Sizing agent-coated carbon fiber bundle, method for manufacturing same, prepreg, and carbon fiber-reinforced composite material |
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| US11390720B2 (en) | 2015-01-21 | 2022-07-19 | Toray Industries, Inc. | Sizing agent coated carbon fiber bundle, method for manufacturing same, prepreg, and carbon fiber reinforced composite material |
| CN104674485A (en) * | 2015-02-11 | 2015-06-03 | 广州金发碳纤维新材料发展有限公司 | Splitting shaping device and splitting shaping method of ultrathin carbon fiber bundle |
| CN105544119A (en) * | 2015-12-04 | 2016-05-04 | 镇江奥立特机械制造有限公司 | Carbon fiber sizing drying technology |
| CN108004621A (en) * | 2016-10-28 | 2018-05-08 | 中国石油化工股份有限公司 | A kind of polyamide resin resin-based composite carbon fiber and preparation method thereof |
| CN108004621B (en) * | 2016-10-28 | 2022-01-21 | 中国石油化工股份有限公司 | Carbon fiber for polyamide resin matrix composite material and preparation method thereof |
| CN109680439A (en) * | 2018-12-08 | 2019-04-26 | 英鸿纳米科技股份有限公司 | A kind of carbon fibre tow drying equipment after starching |
| CN112048854A (en) * | 2020-09-11 | 2020-12-08 | 江苏恒神股份有限公司 | Carbon fiber bundle for winding forming and preparation method and application thereof |
| WO2022052284A1 (en) * | 2020-09-11 | 2022-03-17 | 江苏恒神股份有限公司 | Carbon fiber bundle for filament winding, preparation method therefor and use thereof |
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| CN104195766B (en) | 2016-04-20 |
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Effective date of registration: 20171226 Address after: North of the South Ring Road in Dapu Industrial Park, economic and Technological Development Zone 222000 Jiangsu city of Lianyungang Province Patentee after: Zhongfu Shenying Carbon Fiber Limited Liability Company Address before: 222000 Jiangsu province Lianyungang Dapu industrial zone of Lianyungang economic and Technological Development Zone Cloud Road No. 6 Co-patentee before: Jiangsu Ying You frame Co., Ltd Patentee before: Zhongfu Shenying Carbon Fiber Limited Liability Company |
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Address after: 222000 South Ring Road North, Dapu Industrial Zone, Lianyungang Economic and Technological Development Zone, Jiangsu Province Patentee after: Zhongfu Shenying Carbon Fiber Co.,Ltd. Address before: 222000 North Ring Road, Dapu Industrial Park, Lianyungang Economic and Technological Development Zone, Jiangsu Province Patentee before: ZHONGFU SHENYING CARBON FIBER Co.,Ltd. |
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