CN102121153A - Processing method for expanding carbon fiber - Google Patents
Processing method for expanding carbon fiber Download PDFInfo
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- CN102121153A CN102121153A CN2010105287387A CN201010528738A CN102121153A CN 102121153 A CN102121153 A CN 102121153A CN 2010105287387 A CN2010105287387 A CN 2010105287387A CN 201010528738 A CN201010528738 A CN 201010528738A CN 102121153 A CN102121153 A CN 102121153A
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- carbon fiber
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- widening
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- expansion
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Abstract
The invention provides a processing method for expanding a carbon fiber. The method comprises the steps of carbon fiber (3) tensioning and expanding, heating, carbon fiber widening and winding on a winding drum (6) in sequence, wherein in the step of carbon fiber heating, the carbon fiber (3) round two electrified metal roll shafts (4) so that the carbon fiber (3) emits heat and the resin on the surface of the carbon fiber (3) is softened; in the step of carbon fiber widening, the carbon fiber (3) with the resin on the surface softened is widened in a widening device; and in the step of winding, the winding drum is driven by a motor (7) and the widened finished carbon fiber (3) is wound on the winding drum (6) along with rotation of the winding drum (6). Compared with the prior art, the processing method has the following advantages: the widened carbon fiber has high bulkiness, thus effectively improving the wetting property of the carbon fiber, substantially improving the shear strength and rigidity of the compound product and achieving the aim of better properties of the applied carbon fiber.
Description
Technical field
The present invention relates to a kind of fiber process method, especially refer to a kind of expansion slivers processing method of carbon fiber wire.
Background technology
Carbon fiber is a kind of fiber material section that is made of elemental carbon, is to be formed through high temperature (700～1000 ℃) carbonization by organic fiber, and phosphorus content is higher than 90% macromolecular fibre, and wherein phosphorus content is higher than 99% the graphite fibre that is called.The axial strength of carbon fiber and modulus height, no creep, fatigue durability is good, and specific heat and electric conductivity are between nonmetal and metal, and thermal coefficient of expansion is little, and resistance to chemical reagents is good, and the density of fiber is low, and the X ray permeability is good.Carbon fiber can be divided into polyacrylonitrile-radical, asphaltic base, viscose glue base and phenolic aldehyde base etc. by the precursor kind, then can be divided into universal (GP) and high-performance type (HP) two classes by mechanical property.About common carbon fiber intensity 1000MPa, modulus 100GPa, high-performance carbon fibers can be divided into high strong type (intensity 2000MPa, modulus 250GPa) and high model (modulus is more than 300GPa) again.Intensity is called the superelevation strong type greater than 4000MPa person; Modulus is called the superelevation model greater than 450GPa person.Along with the development of space flight and aircraft industry, high-strength height also occurred and stretched type (intensity greater than 49000MPa, ductility greater than 2%) new varieties.
Existing a kind of Chinese utility model patent that is called " a kind of large-tow carbon fiber expanding unit " for the CN200920282868.X name discloses a kind of structure, its structure comprises the heating roller and the frame of rolling tube, at least one pair of tangent setting, described heating roller and frame are rotationally connected, and described rolling tube is driven by drive unit and rotates.Described heating roller is preferably 2～10 pairs, and the space certain distance is arranged on the described frame; Describedly respectively heat the axis of roller and the axis of described rolling tube is arranged in parallel; Described heating roller can be rotated by motor-driven; This utility model large-tow carbon fiber expanding unit is simple in structure, with low cost, and little, the fiber utilization rate height of products thickness made of carbon fiber after its expansion, makes properties of carbon obtain giving full play to.But its shortcoming is this device can only be applicable to large-tow carbon fiber, and inapplicable widening little tow carbon fiber, be 6mm or widen as width less than the carbon fiber wire of 6mm, the more important thing is, carbon fiber bulking intensity after this device is widened is not enough, be difficult to improve the wettability of carbon fiber, product shear strength and rigidity intensity after compound are lower, so its structure awaits to improve.
Summary of the invention
Technical problem to be solved by this invention is the expansion slivers processing method that a kind of carbon fiber wire is provided at above-mentioned prior art present situation, this method technology is simple, and the carbon fiber wire that expands behind the silk has the wettability height, can effectively improve the shear strength and the rigidity intensity of joint product.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: the expansion slivers processing method of this carbon fiber wire is characterized in that: comprise the step that is wound in the carbon fiber wire tensioning expansion that unreels on the tube, the step of carbon fiber wire heating, step and the rolling tube coiling step that carbon fiber wire is widened successively; The step of described carbon fiber wire heating is: the carbon fiber wire that will unreel after tube upward launches is walked around two live metal roll shafts, constitutes current loop between carbon fiber wire and two metal roller shafts, makes the carbon fiber wire heating and makes its surface resin softening; The step that described carbon fiber wire is widened is: the carbon fiber wire that surface resin is softening is widened in widening device, described coiling step is: described rolling tube is provided with by motor-driven, and the finished product carbon fiber wire after widening is wound on the rolling tube along with the rotation of rolling tube.
As improvement, the described device of widening is for widening plate, this is widened plate and is provided with the widen through hole of width greater than the carbon fiber wire width, the carbon fiber wire that surface resin is softening passes and widens through hole when widening, the pulling force that carbon fiber wire is reeled along with the rolling tube moves forward, entering the carbon fiber wire upper surface of widening behind the through hole pushes mutually with the bottom surface of widening plate, and the carbon fiber wire lower surface after passing from widen through hole pushes mutually with the upper surface of widening plate, through the carbon fiber wire width after the extruding greater than entering the carbon fiber wire width of widening before the through hole.
Improve again, the described device of widening can be two rotating shafts that be arranged in parallel, when carbon fiber wire passes between two rotating shafts after the heater heating, carbon fiber wire upper surface before entering contacts with the bottom surface of first rotating shaft, and the carbon fiber wire lower surface that passes after entering contacts with second rotating shaft upper surface.
Improve, the softening Controllable Temperature of described carbon fiber wire surface resin is made as 150～220 ℃ again.
Improve, the voltage controlled between described two live metal roll shafts is made as 25～36 volts again.
Improve again, the step that described carbon fiber wire tensioning launches is: the described tube that unreels is provided with pressure roller, this pressure roller and connecting rod one end are set together rotationally, and the other end of connecting rod links together with the rotating shaft that is provided with torsion spring, and the roll surface of described pressure roller produces tension force when carbon fiber wire is launched.
Prior art is compared, and the present invention adopts and comprises the step that is wound in the carbon fiber wire tensioning expansion that unreels on the tube, the step of carbon fiber wire heating, step and the rolling tube coiling step that carbon fiber wire is widened successively; Carbon fiber wire after this widening, its bulking intensity height, so-called bulking intensity is meant that thinner, the mutual space of strand in the carbon fiber wire after widening is bigger, thereby improved the wettability of carbon fiber wire effectively, the shear strength and the rigidity intensity of joint product are increased considerably, reach the better purpose of application of carbon fibres silk performance; Also have, processing method of the present invention, simple, convenient, staff's safety again easy to control, high efficiency.
Description of drawings
Fig. 1 is the structural representation of inventive embodiments;
Fig. 2 is an enlarged drawing of widening plate among Fig. 1.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, the expansion slivers processing method of the carbon fiber wire of present embodiment comprises the step that is wound in the carbon fiber wire 3 tensionings expansion that unreels on the tube 1, the step of carbon fiber wire heating, step and the rolling tube 6 coiling steps that carbon fiber wire is widened successively; The step of described carbon fiber wire heating is: the carbon fiber wire 3 that will unreel after launching on the tube 1 is walked around two live metal roll shafts 4, and the voltage between two live metal roll shafts 4 in the present embodiment is chosen as 25～36 volts.Constitute current loop between carbon fiber wire 3 and two metal roller shafts 4, make its surface resin softening owing to the effect of carbon fiber wire 3 internal resistances makes carbon fiber wire 3 heatings, the softening temperature of carbon fiber wire 3 surface resins is controlled to be 150～220 ℃ and is preferred temperature.The step that carbon fiber wire is widened is: the carbon fiber wire 3 that surface resin is softening carries out in widening device, this widens device for widening plate 5, this is widened plate 5 and is provided with width and widens through hole 53 greater than carbon fiber wire 3 width, the carbon fiber wire 3 that surface resin is softening passes and widens through hole 53 when widening, the pulling force that carbon fiber wire 3 is reeled along with rolling tube 6 moves forward, entering carbon fiber wire 3 upper surfaces of widening behind the through hole 53 31 pushes mutually with the bottom surface 51 of widening plate 5, and carbon fiber wire 3 lower surfaces 32 after passing from widen through hole 53 push mutually with the upper surface 52 of widening plate 5, through carbon fiber wire 3 width after the extruding greater than carbon fiber wire 3 width of going into to widen before the through hole 53.Described coiling step is: described rolling tube is driven by motor 7 and is provided with, and the finished product carbon fiber wire 3 after widening is wound on the rolling tube 6 along with the rotation of rolling tube 6.The step that carbon fiber wire tensioning in the present embodiment launches is: unreel tube 1 and be provided with pressure roller 2, this pressure roller 2 is set together rotationally with connecting rod 21 1 ends, and the other end of connecting rod 21 links together with the rotating shaft 22 that is provided with torsion spring, and the roll surface of described pressure roller 2 produces tension force when carbon fiber wire 3 is launched.
Certainly, the above-mentioned device of widening also can be adopted two parallel and rotating shafts that be provided with at interval, when carbon fiber wire 3 passes between two rotating shafts (not drawing among the figure) space after heater heating, the carbon fiber wire upper surface 31 that enters behind the space contacts with the bottom surface of first rotating shaft, and the carbon fiber wire lower surface 32 after passing the space between two rotating shafts contacts with second rotating shaft upper surface.Obviously, above-mentioned widen the rotating shaft that device also can be adopted two parallel tangent settings, when carbon fiber wire 3 passes two phase tangent planes between the rotating shaft after heater heating, the carbon fiber wire upper surface 31 that enters after the phase tangent plane contacts with the bottom surface of first rotating shaft, and the carbon fiber wire lower surface 32 after passing from the phase tangent plane contacts with second rotating shaft upper surface, specifically selects anyly can decide by designing requirement.
Claims (6)
1. the expansion slivers processing method of a carbon fiber wire is characterized in that: comprise the step that is wound in carbon fiber wire (3) the tensioning expansion that unreels on the tube (1), the step of carbon fiber wire heating, step and rolling tube (6) the coiling step that carbon fiber wire is widened successively; The step of described carbon fiber wire heating is: the carbon fiber wire (3) that will unreel after tube (1) upward launches is walked around two live metal roll shafts (4), constitute current loop between carbon fiber wire (3) and two metal roller shafts (4), make carbon fiber wire (3) heating and make its surface resin softening; The step that described carbon fiber wire is widened is: the carbon fiber wire (3) that surface resin is softening is widened in widening device, described coiling step is: described rolling tube is driven by motor (7) and is provided with, and the finished product carbon fiber wire (3) after widening is wound on the rolling tube (6) along with the rotation of rolling tube (6).
2. expansion slivers processing method according to claim 1, it is characterized in that: the described device of widening is for widening plate (5), this is widened plate (5) and is provided with width and widens through hole (53) greater than carbon fiber wire (3) width, the carbon fiber wire (3) that surface resin is softening passes and widens through hole (53) when widening, the pulling force that carbon fiber wire (3) is reeled along with rolling tube (6) moves forward, entering carbon fiber wire (3) upper surface of widening behind the through hole (53) (31) pushes mutually with the bottom surface of widening plate (5) (51), and carbon fiber wire (3) lower surface (32) after passing from widen through hole (53) pushes mutually with the upper surface of widening plate (5) (52), widens preceding carbon fiber wire (3) width of through hole (53) through carbon fiber wire (3) width after the extruding greater than entering.
3. expansion silk device according to claim 1, it is characterized in that: the described device of widening is two rotating shafts that be arranged in parallel, when carbon fiber wire (3) passes between two rotating shafts after the heater heating, carbon fiber wire upper surface (31) before entering contacts with the bottom surface of first rotating shaft, and the carbon fiber wire lower surface (32) that passes after entering contacts with second rotating shaft upper surface.
4. according to the described expansion slivers processing method of arbitrary claim in the claim 1 to 3, it is characterized in that: the softening temperature of described carbon fiber wire (3) surface resin is controlled to be 150～220 ℃.
5. according to the described expansion slivers processing method of arbitrary claim in the claim 1 to 3, it is characterized in that: the Control of Voltage between described two live metal roll shafts (5) is 25～36 volts.
6. according to the described expansion slivers processing method of arbitrary claim in the claim 1 to 3, it is characterized in that: the step that described carbon fiber wire tensioning launches is: the described tube (1) that unreels is provided with pressure roller (2), this pressure roller (2) is provided with rotationally with connecting rod (21) one ends, and the other end of connecting rod (21) links together with the rotating shaft (22) that is provided with torsion spring, and the roll surface of described pressure roller (2) produces tension force when carbon fiber wire (3) is launched.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105287387A CN102121153A (en) | 2010-11-03 | 2010-11-03 | Processing method for expanding carbon fiber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105287387A CN102121153A (en) | 2010-11-03 | 2010-11-03 | Processing method for expanding carbon fiber |
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| CN102121153A true CN102121153A (en) | 2011-07-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035030A (en) * | 2017-12-06 | 2018-05-15 | 上海复合材料科技有限公司 | A kind of carbon fiber wire opens up yarn processing method |
| CN113249808A (en) * | 2021-04-16 | 2021-08-13 | 山西钢科碳材料有限公司 | Winding forming method of polyacrylonitrile-based protofilament |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1958895A (en) * | 2005-11-04 | 2007-05-09 | 卡尔.迈耶.马里莫纺织机械制造有限责任公司 | Device and method for spreading a carbon fibres tow |
| CN101805950A (en) * | 2010-04-19 | 2010-08-18 | 常州市宏发纵横新材料科技有限公司 | Carbon fibre stretching device |
-
2010
- 2010-11-03 CN CN2010105287387A patent/CN102121153A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1958895A (en) * | 2005-11-04 | 2007-05-09 | 卡尔.迈耶.马里莫纺织机械制造有限责任公司 | Device and method for spreading a carbon fibres tow |
| CN101805950A (en) * | 2010-04-19 | 2010-08-18 | 常州市宏发纵横新材料科技有限公司 | Carbon fibre stretching device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035030A (en) * | 2017-12-06 | 2018-05-15 | 上海复合材料科技有限公司 | A kind of carbon fiber wire opens up yarn processing method |
| CN108035030B (en) * | 2017-12-06 | 2019-09-17 | 上海复合材料科技有限公司 | A kind of carbon fiber wire exhibition yarn processing method |
| CN113249808A (en) * | 2021-04-16 | 2021-08-13 | 山西钢科碳材料有限公司 | Winding forming method of polyacrylonitrile-based protofilament |
| CN113249808B (en) * | 2021-04-16 | 2022-08-23 | 山西钢科碳材料有限公司 | Winding forming method of polyacrylonitrile-based protofilament |
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Application publication date: 20110713 |