CN110714270A - Carbon fiber felt and binary method felt preparation process thereof - Google Patents
Carbon fiber felt and binary method felt preparation process thereof Download PDFInfo
- Publication number
- CN110714270A CN110714270A CN201911006066.0A CN201911006066A CN110714270A CN 110714270 A CN110714270 A CN 110714270A CN 201911006066 A CN201911006066 A CN 201911006066A CN 110714270 A CN110714270 A CN 110714270A
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- carbon fiber
- felt
- frequency
- needling
- density
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Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4242—Carbon fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonwoven Fabrics (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention relates to a carbon fiber felt and a binary method felt preparation process thereof. The binary process for preparing the felt comprises the following steps: sequentially carrying out steam curling, short cutting, antistatic agent spraying and opening on the carbon fiber pre-oxidized fibers to obtain short carbon fiber pre-oxidized fibers; converting the chopped carbon fiber pre-oxidized fiber into frequency according to the preset density, breadth, thickness and fiber diameter of the carbon fiber felt and the proportion of X, Y, Z to the carbon fiber yarn by a binary control module; and distributing the converted frequency to frequency conversion devices for feeding, doffers, cylinders, lapping, bottom curtains and needling through a controller, wherein each frequency conversion device controls the above process parts to prepare the chopped carbon fiber pre-oxidized fibers into the carbon fiber felt. The binary method control module can accurately control the density and the thickness value of the carbon fiber felt and the distribution proportion of X, Y, Z to the filaments, and the density and the thickness variance of the carbon fiber felt are small after detection, so that the structure and the size of the carbon fiber felt are more stable. The density and the thickness are more uniform and consistent so as to meet different requirements.
Description
Technical Field
The invention belongs to the field of carbon fiber felt making, and particularly relates to a carbon fiber felt and a binary method felt making process thereof.
Background
The prior felting process has more flows and is sequentially divided into feeding, opening, feeding, carding, lapping, pre-needling, needling down, needling up and coiling. However, the setting of feeding, carding, lapping and needling frequency is completed by the experience of the operator, and even the operator with the most experience can not make the felting completely consistent every time, and the distribution proportion of the yarns in the X, Y and Z directions is not controllable.
Further exploration is needed to make the size and structure of the carbon fiber felt more stable.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a carbon fiber felt and a binary method felt preparation process thereof. The binary method can accurately control the density and the thickness value of the carbon fiber felt and the distribution proportion of X, Y, Z to the filaments, and after detection, the density and the thickness variance of the carbon fiber felt are small, so that the structure and the size of the obtained carbon fiber felt are more stable.
The scheme of the invention is to provide a binary method felt preparation process, which is characterized by comprising the following steps:
(1) sequentially carrying out steam curling, short cutting, antistatic agent spraying and opening on the carbon fiber pre-oxidized fibers to obtain short carbon fiber pre-oxidized fibers;
(2) converting the chopped carbon fiber pre-oxidized fiber obtained in the step (1) into frequency according to the preset density, breadth, thickness and fiber diameter of the carbon fiber felt and the proportion of X, Y, Z to the carbon fiber;
(3) and (3) distributing the frequency converted in the step (2) to frequency conversion devices for feeding, doffing, cylinder, lapping, bottom curtain and needling through a controller, and controlling the process parts to prepare the chopped carbon fiber pre-oxidized fiber obtained in the step (1) into a carbon fiber felt by the frequency conversion devices.
Preferably, in the step (2), the preset density of the carbon fiber felt is 720-1500 g/m2(ii) a The preset width of the carbon fiber felt is 1500-1800 mm.
Preferably, in the step (2), the preset thickness of the carbon fiber felt is 5-10 mm.
Preferably, in the step (2), the preset filament diameter of the carbon fiber felt is 1.5-3 d.
Preferably, in the step (2), the preset proportion of X, Y, Z to the filaments of the carbon fiber felt is 3-4: 2-3: 3-4.
Preferably, in the step (3), the feeding speed is 0.4-0.6 m/min; the rotating speed of the doffer is 250-300 r/min.
Preferably, in the step (3), the rotating speed of the cylinder is 25-30 r/min; the weight of the lapping is 180-250 g/m2。
Preferably, in the step (3), the speed of the bottom curtain is 0.4-0.6 m/min.
Preferably, in the step (3), the needling density is 110-150 punches/cm2The frequency of needling is 200-240 needling/min.
Based on the same technical thought, the invention also provides the carbon fiber felt prepared by the process.
The invention has the beneficial effects that:
the binary method felt preparation process can accurately control the density, thickness, width and yarn diameter value of the carbon fiber felt and the distribution proportion of X, Y, Z to yarns, and after detection, the density and thickness variance of the carbon fiber felt are small, so that the structure and size of the obtained carbon fiber felt are more stable.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1
The embodiment provides a binary method felt making process of a carbon fiber felt, which comprises the following steps:
(1) carrying out steam curling, short cutting, antistatic agent spraying, opening and the like on the carbon fiber pre-oxidized fiber to obtain short cut carbon fiber pre-oxidized fiber;
(2) inputting target parameter values into the binary control module according to requirements, and setting the density of the carbon fiber felt to be 1500g/m2The width is 1800mm, the thickness is 10mm, the diameter of the yarn is 3d, and the distribution ratio of the X, Y and Z-direction yarns is 3:3: 4; obtaining a feeding frequency of 22Hz, a doffer frequency of 30Hz, a cylinder frequency of 3Hz, a lapping frequency of 15Hz, a bottom curtain frequency of 22Hz and a needling frequency of 40Hz through a binary control module;
(3) through the controller, the step (2) The obtained frequency values are automatically distributed to frequency conversion devices for feeding, doffers, cylinders, lapping, bottom curtains and needling, the feeding speed is controlled to be 0.6m/min by the feeding frequency conversion device, the rotating speed of the doffers is controlled to be 300r/min by the doffer frequency conversion device, the rotating speed of the cylinders is controlled to be 30r/min by the cylinder frequency conversion device, and the lapping weight is controlled to be 250g/m by the lapping frequency conversion device2The bottom curtain frequency conversion device controls the bottom curtain speed to be 0.6m/min, and the needling frequency conversion device controls the needling density to be 150 needling/cm2The needling frequency is 240 needling/min. And (3) controlling the above process parts by each frequency conversion device to prepare the carbon fiber felt from the chopped carbon fiber pre-oxidized fiber obtained in the step (1).
Example 2
(1) Carrying out steam curling, short cutting, antistatic agent spraying, opening and the like on the carbon fiber pre-oxidized fiber to obtain short cut carbon fiber pre-oxidized fiber;
(2) inputting target parameter values into the binary control module according to requirements, and setting the density of the carbon fiber felt to be 1200g/m2The width is 1600mm, the thickness is 8mm, the diameter of the yarn is 3d, and the distribution ratio of the X, Y and Z-direction yarns is 4:2: 3; obtaining a feeding frequency of 20Hz, a doffer frequency of 28Hz, a cylinder frequency of 2.8Hz, a lapping frequency of 15Hz, a bottom curtain frequency of 18.5Hz and a needling frequency of 38Hz through a binary control module;
(3) automatically distributing the frequency values obtained in the step (2) to frequency conversion devices of feeding, doffer, cylinder, lapping, bottom curtain and needling by a controller, wherein the feeding speed is controlled to be 0.5m/min by the feeding frequency conversion device, the doffer rotating speed is controlled to be 280r/min by the doffer frequency conversion device, the cylinder rotating speed is controlled to be 28r/min by the cylinder frequency conversion device, and the lapping weight is controlled to be 200g/m by the lapping frequency conversion device2The bottom curtain frequency conversion device controls the bottom curtain speed to be 0.5m/min, and the needling frequency conversion device controls the needling density to be 120 needling/cm2And the needling frequency is 225 needling/min. And (3) controlling the above process parts by each frequency conversion device to prepare the carbon fiber felt from the chopped carbon fiber pre-oxidized fiber obtained in the step (1).
Example 3
(1) Carrying out steam curling, short cutting, antistatic agent spraying, opening and the like on the carbon fiber pre-oxidized fiber to obtain short cut carbon fiber pre-oxidized fiber;
(2) on-demand binary control modeInputting target parameter values in the blocks, and setting the density of the carbon fiber felt to be 720g/m2The width is 1500mm, the thickness is 5mm, the diameter of the filament is 1.5d, and the distribution ratio of the X, Y and Z-direction filaments is 4:3: 3; obtaining a feeding frequency of 18Hz, a doffer frequency of 26Hz, a cylinder frequency of 2.6Hz, a lapping frequency of 12.5Hz, a bottom curtain frequency of 16.5Hz and a needling frequency of 35Hz through a binary control module;
(3) automatically distributing the frequency values obtained in the step (2) to frequency conversion devices of feeding, doffer, cylinder, lapping, bottom curtain and needling by a controller, wherein the feeding speed is controlled by the feeding frequency conversion device to be 0.4m/min, the doffer speed is controlled by the doffer frequency conversion device to be 250r/min, the cylinder speed is controlled by the cylinder frequency conversion device to be 25r/min, and the lapping weight is controlled by the lapping frequency conversion device to be 180g/m2The bottom curtain frequency conversion device controls the bottom curtain speed to be 0.4m/min, and the needling frequency conversion device controls the needling density to be 110 needling/cm2The needling frequency is 200 needling/min. And (3) controlling the above process parts by each frequency conversion device to prepare the carbon fiber felt from the chopped carbon fiber pre-oxidized fiber obtained in the step (1).
In order to characterize the size and structural superiority of the carbon fiber felt, commercially available carbon fiber felt was selected and compared with the carbon fiber felt of the present invention, and the results are shown in table 1. Wherein, when the variance of the density and the thickness of the carbon fiber felt is calculated, the variance is at any 1m2Uniformly taking 5 points in the area, measuring the corresponding density and thickness of the 5 points, and calculating the variance.
TABLE 1 comparison of the dimensions of examples 1 to 3 with commercially available products
Results and conclusions:
the density and thickness variance of the carbon fiber felts obtained in the examples 1 to 3 are generally smaller than those of the commercial products, which shows that the carbon fiber felts obtained in the examples 1 to 3 have better stability.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A binary process for preparing felt is characterized by comprising the following steps:
(1) sequentially carrying out steam curling, short cutting, antistatic agent spraying and opening on the carbon fiber pre-oxidized fibers to obtain short carbon fiber pre-oxidized fibers;
(2) converting the chopped carbon fiber pre-oxidized fiber obtained in the step (1) into frequency according to the preset density, breadth, thickness and fiber diameter of the carbon fiber felt and the proportion of X, Y, Z to the carbon fiber;
(3) and (3) distributing the frequency converted in the step (2) to frequency conversion devices for feeding, doffing, cylinder, lapping, bottom curtain and needling through a controller, and controlling the process parts to prepare the chopped carbon fiber pre-oxidized fiber obtained in the step (1) into a carbon fiber felt by the frequency conversion devices.
2. The binary process for manufacturing the felt according to claim 1, wherein in the step (2), the preset density of the carbon fiber felt is 720-1500 g/m2(ii) a The preset width of the carbon fiber felt is 1500-1800 mm.
3. The binary process for manufacturing the felt according to claim 1, wherein in the step (2), the preset thickness of the carbon fiber felt is 5-10 mm.
4. The binary process for manufacturing the felt according to claim 1, wherein in the step (2), the preset filament diameter of the carbon fiber felt is 1.5-3 d.
5. The binary process for preparing felt according to claim 1, wherein in the step (2), the preset proportion of X, Y, Z fibers in the carbon fiber felt is 3-4: 2-3: 3-4.
6. The binary process for making felt according to claim 1, wherein in the step (3), the feeding speed is 0.4-0.6 m/min; the rotating speed of the doffer is 250-300 r/min.
7. The binary process for making felt according to claim 1, wherein in the step (3), the rotating speed of the cylinder is 25-30 r/min; the weight of the lapping is 180-250 g/m2。
8. The binary process for making felt according to claim 1, wherein in the step (3), the speed of the bottom curtain is 0.4-0.6 m/min.
9. The binary process for making felt according to claim 1, wherein in the step (3), the needling density is 110-150 punches/cm2The frequency of needling is 200-240 needling/min.
10. A carbon fiber mat produced by the process of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911006066.0A CN110714270A (en) | 2019-10-22 | 2019-10-22 | Carbon fiber felt and binary method felt preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911006066.0A CN110714270A (en) | 2019-10-22 | 2019-10-22 | Carbon fiber felt and binary method felt preparation process thereof |
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| CN110714270A true CN110714270A (en) | 2020-01-21 |
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| CN201911006066.0A Pending CN110714270A (en) | 2019-10-22 | 2019-10-22 | Carbon fiber felt and binary method felt preparation process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114801353A (en) * | 2022-03-31 | 2022-07-29 | 西安航空制动科技有限公司 | Pre-oxidized fiber/carbon fiber structure preform and preparation method thereof |
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| JPH11158737A (en) * | 1997-11-25 | 1999-06-15 | Mitsubishi Rayon Co Ltd | Production of carbon fiber felt |
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| CN106626710A (en) * | 2016-12-30 | 2017-05-10 | 嘉兴启晟碳材料有限公司 | Carbon fiber insulation hard felt and preparation method thereof |
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2019
- 2019-10-22 CN CN201911006066.0A patent/CN110714270A/en active Pending
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| JPH11158737A (en) * | 1997-11-25 | 1999-06-15 | Mitsubishi Rayon Co Ltd | Production of carbon fiber felt |
| CN101021033A (en) * | 2007-03-17 | 2007-08-22 | 江苏省仪征市海润纺织机械有限公司 | Process and apparatus for producing needle entangled non-woven material with even stitches |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114801353A (en) * | 2022-03-31 | 2022-07-29 | 西安航空制动科技有限公司 | Pre-oxidized fiber/carbon fiber structure preform and preparation method thereof |
| CN114801353B (en) * | 2022-03-31 | 2024-04-09 | 西安航空制动科技有限公司 | Pre-oxidized fiber/carbon fiber structure preform and preparation method thereof |
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Application publication date: 20200121 |