CN212713887U - Carbon fiber pre-oxidized fiber pretreatment equipment - Google Patents
Carbon fiber pre-oxidized fiber pretreatment equipment Download PDFInfo
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- CN212713887U CN212713887U CN202021404489.6U CN202021404489U CN212713887U CN 212713887 U CN212713887 U CN 212713887U CN 202021404489 U CN202021404489 U CN 202021404489U CN 212713887 U CN212713887 U CN 212713887U
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Abstract
The utility model relates to a carbon fiber technology field especially relates to a carbon fiber is oxygen silk preliminary treatment equipment in advance, include: two drafting devices are positioned between the yarn releasing creel and the oxidation furnace; a heat treatment device located between the two drafting devices and comprising: the steam inlet is communicated with the inside of the cavity and provides steam for the inside of the cavity, and the steam outlet is communicated with the inside of the cavity and is used for discharging the steam in the cavity; the carbon fiber tows pass through the drafting device from the yarn releasing creel, enter the heat treatment device, then enter the drafting device and finally enter the oxidation furnace for oxidation treatment. The utility model discloses in for the carbon fiber silk bundle is through heating, humidification processing earlier before oxidation treatment and exert tension, very big improvement the surface broken filament of carbon fiber silk bundle, improved the average tensile elongation and the average elongation at break of carbon fiber silk, improved the final off-the-shelf performance of carbon fiber.
Description
Technical Field
The utility model relates to a carbon fiber technology field especially relates to a carbon fiber is oxygen silk preliminary treatment equipment in advance.
Background
The carbon fiber is inorganic polymer fiber with carbon content higher than 92%. Wherein the carbon content is more than 99 percent, namely graphite fiber. The carbon fiber has high axial strength and modulus, no creep, good fatigue resistance, specific heat and conductivity between nonmetal and metal, small thermal expansion coefficient, good corrosion resistance and low fiber density. The engineering material compounded by carbon fiber is superior to metal material, and has tensile strength 3-4 times higher than that of steel, fatigue resistance 2 times higher, weight 3-4 times lighter than that of steel and heat expansion 4-5 times smaller than that of steel. The graphite fiber can have zero variation. The carbon fiber is widely applied to the fields of aerospace, high-speed rail traffic, sports goods, chemical machinery, textile machinery and the like.
Carbon fiber is in the production process, and the precursor reaches the pre-oxidation stove before importing through putting the creel, and not carry out the preliminary treatment to carbon fiber, and because the precursor of domestic production all has the defect itself in the spinning process at present, the phenomenon of the direct easy emergence surface broken filament of oxidation treatment back of carbon fiber has influenced the performance of final carbon fiber product.
In view of the above problems, the designer is based on the practical experience and professional knowledge that are abundant for many years in engineering application of such products, and is actively researched and innovated in cooperation with the application of theory, so as to create a carbon fiber pre-oxidized fiber pretreatment device, and the carbon fiber pre-oxidized fiber pretreatment device is more practical.
SUMMERY OF THE UTILITY MODEL
The utility model provides a carbon fiber pre-oxidation silk pre-treatment device to effectively solve the problem in the background art.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a carbon fiber pre-oxygen wire pretreatment apparatus comprising:
the two drafting devices are positioned between the silk discharging creel and the oxidation furnace;
a heat treatment device located between the two drafting devices, the heat treatment device comprising:
the cavity is a structure with two through ends,
the sealing devices are arranged at two ends of the containing cavity and used for sealing the containing cavity,
a steam inlet communicated with the inside of the cavity and providing steam to the inside of the cavity,
the steam outlet is communicated with the inside of the cavity and is used for discharging water vapor in the cavity;
and the carbon fiber tows pass through the drafting device from the yarn releasing creel, enter the heat treatment device, then enter the drafting device and finally enter the oxidation furnace for oxidation treatment.
Further, the heat treatment device comprises a box body and an inner container, the accommodating cavity is located inside the inner container, and the box body is located outside the inner container.
Furthermore, the upper end of the inner container is corrugated.
Furthermore, the upper end of the cavity is arched.
Furthermore, a plurality of air holes are correspondingly formed in the sealing device up and down, and air flow is blown out from the air holes to form an air curtain.
Further, the air curtain is at least 2 layers.
Further, the drafting device is a multi-stage roller.
Furthermore, in the two drafting devices, the heights of the top points of the two rollers close to the heat treatment device are equal and are positioned in the middle of the sealing device.
The utility model has the advantages that: the utility model discloses a set up two drafting equipment and heat treatment device between putting yarn creel and oxidation furnace, heat treatment device is including holding the chamber, sealing device, steam inlet and steam outlet, the carbon fiber silk bundle is from putting yarn creel through draw gear, get into heat treatment device, steam inlet is toward holding the intracavity and letting in high temperature vapor, heat and humidification treatment to the carbon fiber silk bundle, reentrant drafting device, get into oxidation furnace oxidation treatment at last, make the carbon fiber silk bundle through the heating earlier before oxidation treatment, humidification treatment and apply tension, very big improvement the surface broken filament of carbon fiber silk bundle, the average tensile elongation and the average elongation at break of carbon fiber are improved, the final off-the-shelf performance of carbon fiber is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a heat treatment apparatus;
FIG. 3 is a schematic view of the heat treatment apparatus after the box is hidden;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a front view of the inner bladder;
FIG. 6 is a schematic view of the structure of the sealing device;
fig. 7 is a schematic view of the structure of the air curtain formed in the sealing device.
Reference numerals: 1. a drafting device; 2. a heat treatment device; 21. a cavity; 211. a box body; 212. an inner container; 22. a sealing device; 221. air holes; 23. a steam inlet; 24. and (4) a steam outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 7, a carbon fiber pre-oxidized fiber pretreatment apparatus includes:
the two drafting devices 1 are positioned between the silk discharging creel and the oxidation furnace;
a heat treatment device 2, the heat treatment device 2 is positioned between the two drafting devices 1, the heat treatment device 2 comprises:
a cavity 21, wherein the cavity 21 is a structure with two through ends,
the sealing devices 22 are arranged at two ends of the cavity 21, the sealing devices 22 are used for sealing the cavity 21,
a steam inlet 23, wherein the steam inlet 23 is communicated with the inside of the cavity 21 and provides water vapor for the inside of the cavity 21,
the steam outlet 24 is communicated with the inside of the cavity 21, and water vapor in the cavity 21 is discharged;
the carbon fiber tows pass through the drafting device 1 from the yarn releasing creel, enter the heat treatment device 2, then enter the drafting device 1, and finally enter the oxidation furnace for oxidation treatment.
Through set up two drafting equipment and heat treatment device 2 between unreeling creel and oxidation furnace, heat treatment device 2 is including holding chamber 21, sealing device 22, steam inlet 23 and steam outlet 24, the carbon fiber silk bundle passes through draw gear from unreeling the creel, get into heat treatment device 2, steam inlet 23 lets in high temperature steam toward holding the intracavity 21, heat and humidification treatment to the carbon fiber silk bundle, reentrant drafting device 1, get into oxidation furnace oxidation treatment at last, make the carbon fiber silk bundle pass through the heating earlier before oxidation treatment, humidification treatment and apply tension, very big improvement the surface broken filament of carbon fiber silk, the average tensile elongation and the average elongation at break of carbon fiber silk have been improved, the final off-the-shelf performance of carbon fiber has been improved.
Preferably, the heat treatment apparatus 2 of the above embodiment includes a case 211 and an inner container 212, the cavity 21 is located inside the inner container 212, and the case 211 is located outside the inner container 212.
Through setting up box 211 and inner bag 212, it is inside that appearance chamber 21 is located inner bag 212, and box 211 is located inner bag 212 outside for there is bilayer structure appearance chamber 21 and outside, thereby improved heat treatment device 2's thermal insulation performance, better carry out heat treatment to the carbon fiber tow, both saved the energy, reduced manufacturing cost, improved the performance of carbon fiber tow again, increased the utility model discloses a practicality and economic nature.
As the preferred of above-mentioned embodiment, inner bag 212 upper end is the flute type, through setting up inner bag 212 upper end into the flute shape, make the air of inner bag 212 upper end isolated by each flute, reduced the flow of inner bag 212 upper end air, thereby increased inner bag 212's heat preservation effect, improved heat treatment device 2's thermal insulation performance, better carry out heat treatment to the carbon fiber tow, both saved the energy, reduced manufacturing cost, improved the performance of carbon fiber tow again, increased the utility model discloses a practicality and economic nature.
As the preferred of above-mentioned embodiment, it is the arch to hold 21 upper ends, thereby hold 21 inside high-temperature steam that lets in through steam inlet 23 to carbon fiber tow heating humidification processing, when just letting in steam, it is lower to hold the interior temperature of chamber 21, steam probably condenses into the drop of water at inner bag 212 outer wall, it sets up to the arch can effectually carry out the water conservancy diversion to the drop of water to hold 21 upper ends, prevent that the drop of water from dripping on the carbon fiber tow, wait to hold the interior temperature of chamber 21 and rise to when more than 100 degrees centigrade, thereby the drop of water becomes steam again and discharges from steam outlet 24, the stability of carbon fiber tow preliminary treatment has been guaranteed, the performance of carbon fiber tow has been improved, increased the utility model discloses a practicality and reliability.
As the preferred of above-mentioned embodiment, sealing device 22 corresponds from top to bottom and is provided with a plurality of gas pockets 221, thereby it forms the air curtain to have the air current to blow off in the gas pocket 221, because hold chamber 21 both ends for lining up the structure, the carbon fiber silk bundle need get into from one end and hold the chamber 21 in, need go out from the other end again, so general seal structure is difficult to form sealedly to holding the intracavity 21, correspond to setting up a plurality of gas pockets 221 from top to bottom at sealing device 22, there is the air current to blow off in the gas pocket 221, upper end gas pocket 221 blows downwards, lower extreme gas pocket 221 upwards blows, thereby form the air curtain, to holding the intracavity formation sealed effect, the air humidity who holds the chamber 21 has been guaranteed, the performance of carbon fiber silk bundle has been.
As the preferred of above-mentioned embodiment, the air curtain is 2 layers at least, and the air curtain sets up to 2 layers at least, and sealed effect is better, has guaranteed to hold the air humidity in the chamber 21, has improved the performance of carbon fiber silk bundle, has increased the utility model discloses a practicality and reliability.
As the preferred of above-mentioned embodiment, draft device 1 is multistage roller, and through setting up draft device 1 to multistage roller, the carbon fiber silk bundle has guaranteed the tension of carbon fiber silk bundle through the drawing of multistage roller, has improved the performance of carbon fiber silk bundle, has increased the utility model discloses a practicality and reliability.
In the above embodiment, it is preferable that the heights of the apexes of the two rolls in the two draft devices 1 close to the heat treatment device 2 are equal and located in the middle of the sealing device 22.
Through highly equaling and being located sealing device 22 with being close to two rollers at top place in two draw gear 1 in the middle of being close to heat treatment device 2, can guarantee that the carbon fiber silk bundle is highly unanimous in heat treatment device 2, and the carbon fiber silk bundle is located sealing device 22's centre when passing through sealing device 22, just in time is in the air current intersection about being in, has guaranteed the air curtain to the sealing performance who holds chamber 21, has guaranteed the air humidity who holds the intracavity 21, has improved the performance of carbon fiber silk bundle, has increased the utility model discloses a practicality and reliability. Adopt 50 bundles, 12K homemade carbon fiber precursor, under 10 m/min's production line speed, adopt the utility model discloses an equipment carries out the preliminary treatment back to the precursor, and the contrast is not handled carbon fiber tow, under the condition of tension at 500 ~ 2000cN, the performance contrast is as shown in the following table:
the carbon fiber tow is in the process the utility model discloses an equipment treatment back has improved the average tensile elongation and the average elongation at break of carbon fiber silk, has improved the final off-the-shelf performance of carbon fiber.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A carbon fiber pre-oxidized fiber pretreatment device is characterized by comprising:
the two drafting devices (1), the two drafting devices (1) are positioned between the silk discharging creel and the oxidation furnace;
-a heat treatment device (2), said heat treatment device (2) being located between two of said drafting devices (1), said heat treatment device (2) comprising:
the container comprises a container (21), the container (21) is a structure with two through ends,
the sealing devices (22) are arranged at two ends of the containing cavity (21) and used for sealing the containing cavity (21),
a steam inlet (23), wherein the steam inlet (23) is communicated with the inside of the cavity (21) and provides water vapor for the inside of the cavity (21),
the steam outlet (24) is communicated with the inside of the cavity (21), and steam in the cavity (21) is discharged;
the carbon fiber tows pass through the drafting device (1) from the filament-releasing creel, enter the heat treatment device (2), then enter the drafting device (1), and finally enter the oxidation furnace for oxidation treatment.
2. The carbon fiber pre-oxidized fiber pretreatment apparatus according to claim 1, wherein the heat treatment device (2) comprises a tank body (211) and a liner (212), the cavity (21) is located inside the liner (212), and the tank body (211) is located outside the liner (212).
3. The carbon fiber pre-oxidized fiber pretreatment apparatus according to claim 2, characterized in that the upper end of the inner container (212) is corrugated.
4. The pretreatment equipment for carbon fiber pre-oxidized filaments according to claim 3, wherein the upper end of the cavity (21) is arched.
5. The carbon fiber pre-oxidized fiber pretreatment equipment according to claim 1, characterized in that a plurality of air holes (221) are correspondingly arranged on the upper part and the lower part of the sealing device (22), and air flow is blown out from the air holes (221) to form an air curtain.
6. The carbon fiber pre-filament treatment apparatus of claim 5, wherein the air curtain is at least 2 layers.
7. The apparatus for the pre-treatment of carbon fiber pre-oxidized filaments according to claim 6, characterized in that the drafting device (1) is a multi-stage roller.
8. The apparatus for the pre-treatment of carbon fiber pre-oxidized filaments according to claim 7, characterized in that the upper vertices of the two rollers of the two drafting devices (1) close to the heat treatment device (2) are at the same height and in the middle of the sealing device (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202021404489.6U CN212713887U (en) | 2020-07-16 | 2020-07-16 | Carbon fiber pre-oxidized fiber pretreatment equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021404489.6U CN212713887U (en) | 2020-07-16 | 2020-07-16 | Carbon fiber pre-oxidized fiber pretreatment equipment |
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| CN212713887U true CN212713887U (en) | 2021-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116377619A (en) * | 2023-06-05 | 2023-07-04 | 吉林国兴碳纤维有限公司 | 35-50K carbon fiber, preparation method thereof and pre-oxidation furnace for producing 35-50K carbon fiber |
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2020
- 2020-07-16 CN CN202021404489.6U patent/CN212713887U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116377619A (en) * | 2023-06-05 | 2023-07-04 | 吉林国兴碳纤维有限公司 | 35-50K carbon fiber, preparation method thereof and pre-oxidation furnace for producing 35-50K carbon fiber |
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