Preparation method of carbon fiber suitable for winding process

Abstract

The invention discloses a preparation method of a carbon fiber suitable for a winding process. The method comprises the following steps: S1, polymerizing: polymerizing acrylonitrile and a comonomer in a dimethyl sulfoxide solution; s2, monomer removal and defoaming: separating residual acrylonitrile monomers in the polymerization liquid from a system under a vacuum condition to obtain a stable spinning solution; the spinning solution is output through a spinning metering pump, flows through a buffer, enters a spinneret plate assembly and then is sprayed out, a dry-wet spinning process is adopted, and the spinning solution enters a solidification solution to be solidified and formed into solidified filaments; s4, water washing, S5, hot water drafting, S6, oiling and drying densification, S7, steam drafting, S8, heat setting, S9, protofilament collection, S10, pre-oxidation, S11, low-temperature carbonization, S12, high-temperature carbonization, S13, surface treatment, S14, sizing and S15, carbon fiber rolling. The production process of the carbon fibers is controlled, the carbon fibers with few broken filaments and good abrasion resistance are formed, and production of a winding process is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of organic polymer materials, and in particular relates to a method for preparing carbon fiber suitable for winding process. Background Art

[0002] The winding molding process is to wind the continuous fiber that has been treated with resin glue onto the core mold according to a certain rule, and then obtain the product after curing and demolding. It is divided into three methods: dry winding, wet winding and semi-dry winding. Among the three methods, wet winding is the most commonly used. The raw materials for winding molding are mainly fiber reinforcement materials, resins and fillers. Carbon fiber yarn is a kind of fiber reinforcement material. In order to meet the use requirements of winding molding, in addition to proposing its own performance indicators, corresponding requirements are also put forward for the wear resistance of carbon fiber. However, the wear resistance of carbon fiber in the existing technology is low and cannot meet the existing technical requirements.

[0003] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0004] The object of the present invention is to provide a method for preparing carbon fiber suitable for winding process, which can.

[0005] In order to achieve the above object, a technical solution provided by a specific embodiment of the present invention is as follows:

[0006] A method for preparing carbon fiber suitable for winding process comprises the following steps;

[0007] S1, polymerization: acrylonitrile and comonomer are polymerized in a dimethyl sulfoxide solution;

[0008] S2, de-monomerization and degassing: under vacuum conditions, the residual acrylonitrile monomer in the polymerization solution is separated from the system to obtain a stable spinning solution;

[0009] S3, coagulation and forming: the spinning solution is outputted by the spinning metering pump, flows through the buffer, enters the spinneret assembly and is ejected, adopts the dry-wet spinning process, enters the coagulation liquid and coagulates into coagulated filaments;

[0010] S4, washing: washing the coagulated filaments with water, using a flower roller beating method;

[0011] S5, hot water drawing: the washed silk strips are drawn 1.2 to 4 times in hot water;

[0012] S6, oiling and drying and densification: Use modified silicone oil or non-silicone oil agent to oil the coagulated filaments after water washing and drawing, and use hot rollers to dry and densify, and the drying and densification temperature is 100-190°C;

[0013] S7, steam drawing: use saturated steam for 1.5 to 6 times drawing;

[0014] S8, heat setting: use saturated water vapor to heat set the fiber;

[0015] S9, raw silk collection: using a winding machine to collect the raw silk to obtain finished raw silk;

[0016] S10, pre-oxidation: oxidizing the raw silk in an environment of 200-300°C;

[0017] S11, low temperature carbonization: the pre-oxidized wire strips are subjected to low temperature carbonization treatment at 300-800°C;

[0018] S12, high temperature carbonization: subjecting the wire strips after low temperature carbonization treatment to high temperature carbonization treatment at 1000-1600°C;

[0019] S13, surface treatment: applying current to the high temperature carbonized wire in an electrolytic solution for surface treatment, and then washing with water, wherein the electrolyte concentration after washing is ≤0.1%;

[0020] S14, sizing: Before sizing, the fibers are evenly arranged on the rollers, and then immersed in the sizing tank for sizing. After sizing, the filaments are dried in a dryer;

[0021] S15, carbon fiber winding: using a winding machine to collect the carbon fiber to obtain finished carbon fiber.

[0022] In one or more embodiments of the present invention, the comonomer is one or more combinations of methyl acrylate, methyl methacrylate, acrylic acid, methacrylic acid, acrylamide, itaconic acid, ammonium itaconate, and isobutyl methacrylate.

[0023] In one or more embodiments of the present invention, when the coagulation liquid is put into the coagulation molding in step S3, the coagulation bath concentration is controlled to be 20-40%, the coagulation bath temperature is controlled to be 0-10° C., and the coagulation bath pH value is controlled to be 9.5-11.5.

[0024] In one or more embodiments of the present invention, the direction of the washing water flow in the S4 step is countercurrent, and the washing is divided into 3-5 sections, each section consists of 3 washing tanks, and the rollers immersed in the washing tanks during washing are all flower rollers. The roller group at the outlet of each washing section consists of 7 rollers, which are active roller groups, and the remaining roller groups consist of 3 rollers, which are passive roller groups. The water temperature of the washing is controlled at 30-70°C. Starting from the first washing tank, the concentration of dimethyl sulfoxide in the washing gradually decreases compared with the previous section, and the dimethyl sulfoxide residue in the fiber of the last washing tank is ≤100ppm5.

[0025] In one or more embodiments of the present invention, in the step S10, the pre-oxidation furnace used for pre-oxidation consists of 6-8 temperature zones in total, and the length of each temperature zone is 5-10m.

[0026] In one or more embodiments of the present invention, the current range in the step S13 is 0.1-0.4 A / g, the electrolysis level is ≥3, the fiber distance to the bottom electrode is ≤100 mm, and the effective length of the electrolytic cell is 1 m-2 m.

[0027] In one or more embodiments of the present invention, if there is no other equipment between the two roller groups during the production process, the tension should be less than 20% of the tension of the previous section and the next section, but is required to be ≥0.25 cN / dtex.

[0028] In one or more embodiments of the present invention, the winding machine shell includes multiple reels, a fire protection device and a drying device, the fire protection device is arranged on multiple end faces of the winding machine shell, the drying device is matched with the reel, and the drying device dries the carbon fiber filaments wound on the reel.

[0029] In one or more embodiments of the present invention, the fire prevention device includes a fire extinguishing tank, a rotating fire extinguishing head and a fire extinguishing nozzle. The fire extinguishing tank is fixedly connected to one side end face of the winding machine housing; the rotating fire extinguishing head is arranged on multiple end faces of the winding machine housing, and the fire extinguishing nozzle is arranged on multiple end faces of the winding machine housing. The position of the fire extinguishing nozzle matches the position of multiple reels, and the rotating fire extinguishing head and the fire extinguishing nozzle are both connected to the fire extinguishing tank.

[0030] In one or more embodiments of the present invention, the drying device includes a protective plate, a vacuum pump, a drying tube and a filter box. The end face of the protective plate contacting the roll is provided with a plurality of heat transfer tubes and dust suction tubes. The heat transfer tube is connected to the drying tube. The vacuum pump includes a negative pressure tube, which is connected to the dust suction tube. The drying tube is connected to a heat source, which is the heat in the dryer used in step S14. The drying tube is connected to the dryer. A filter box is connected between the negative pressure tube and the dust suction tube. The filter box includes a plurality of filter plates, which are fixedly connected to the inner wall end face of the filter box. The inner wall end face of the filter box is provided with an ash storage drawer.

[0031] Compared with the prior art, the method for preparing carbon fiber suitable for winding process of the present invention is controlled through the carbon fiber production process to form carbon fiber with less fuzz and good wear resistance, which is beneficial to the production of winding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 This is a process flow chart of a method for preparing a carbon fiber suitable for a winding process in one embodiment of the present invention;

[0034] Figure 2 It is a structural schematic diagram of the winding machine housing of the present invention;

[0035] Figure 3 for Figure 2 A magnified image of point A;

[0036] Figure 4 It is a structural schematic diagram of the filter box of the present invention;

[0037] Description of main reference numerals:

[0038] 1-winding machine housing, 101-bottom plate, 2-reel, 3-fire protection device, 301-rotating fire extinguishing head, 302-fire extinguishing nozzle, 4-drying device, 401-protective plate, 402-heat delivery pipe, 403-slide, 404-slide plate, 405-dust suction pipe, 5-filter box, 501-filter plate, 502-ash storage drawer. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0040] like Figure 1 As shown, a method for preparing carbon fiber suitable for winding process in one embodiment of the present invention mainly includes the following steps:

[0041] S1, polymerization: acrylonitrile and comonomer are polymerized in a dimethyl sulfoxide solution;

[0042] The comonomer may be one or more combinations of methyl acrylate, methyl methacrylate, acrylic acid, methacrylic acid, acrylamide, itaconic acid, ammonium itaconate, and isobutyl methacrylate;

[0043] S2, de-monomerization and degassing: under vacuum conditions, the residual acrylonitrile monomer in the polymerization solution is separated from the system to separate the monomer; the mixed gas in the polymerization solution is removed to eliminate bubbles to obtain a stable spinning solution;

[0044] S3, coagulation and forming: the spinning solution is outputted by the spinning metering pump, flows through the buffer, enters the spinneret assembly and is ejected, adopts the dry-wet spinning process, enters the coagulation liquid and is coagulated into coagulated filaments, and the coagulation bath concentration is controlled to be 20-40%, the coagulation bath temperature is 0-10°C, and the coagulation bath pH value is 9.5-11.5;

[0045] S4, washing: washing the coagulated filaments, washing with a flower roller beating method, the direction of the washing water flow is countercurrent, the washing is divided into 3-5 sections, each section consists of 3 washing tanks, the rollers immersed in the washing tanks during washing are all flower rollers, the roller group at the outlet of each washing section consists of 7 rollers, which are active roller groups, and the remaining roller groups consist of 3 rollers, which are passive roller groups, the water temperature of the washing is controlled at 30-70°C, starting from the first washing tank, the concentration of dimethyl sulfoxide in the washing is gradually reduced compared with the concentration in the previous section, and the dimethyl sulfoxide residue of the fiber in the last washing tank is ≤100ppm;

[0046] S5, hot water drawing: the washed silk strips are drawn 1.2 to 4 times in hot water;

[0047] S6, oiling and drying and densification: Use modified silicone oil or non-silicone oil agent to oil the coagulated filaments after water washing and drawing, and use hot rollers to dry and densify, and the drying and densification temperature is 100-190°C;

[0048] S7, steam drawing: use saturated steam for 1.5 to 6 times drawing;

[0049] S8, heat setting: use saturated water vapor to heat set the fiber;

[0050] S9, raw silk collection: using a winding machine to collect the raw silk to obtain finished raw silk;

[0051] S10, pre-oxidation: the raw silk is oxidized in an environment of 200-300°C. The pre-oxidation furnace used for pre-oxidation consists of 6-8 temperature zones in total. The length of each temperature zone is 5-10m. A roller group is set at the outlet of each temperature zone. Each group consists of 5-9 rollers, which are active rollers. The remaining roller groups consist of 1-3 rollers, which are passive rollers.

[0052] S11, low temperature carbonization: the pre-oxidized wire strips are subjected to low temperature carbonization treatment at 300-800°C;

[0053] S12, high temperature carbonization: subjecting the wire strips after low temperature carbonization treatment to high temperature carbonization treatment at 1000-1600°C;

[0054] S13, surface treatment: Apply a constant current to the high-temperature carbonized silk in the electrolytic solution for surface treatment. The electrolytic current is adjusted according to actual needs, ranging from 0.1-0.4A / g, the electrolysis level is ≥3, the fiber distance from the bottom electrode of the tank is ≤100mm, the effective length of the electrolytic tank is 1m-2m, and then washed with water. After washing, the electrolyte concentration is ≤0.1%;

[0055] S14, sizing: Before sizing, the fibers are evenly arranged on the rollers, and then immersed in the sizing tank for sizing. After sizing, the filaments are dried;

[0056] S15, carbon fiber winding: using a winding machine to collect the carbon fiber to obtain finished carbon fiber.

[0057] It should be noted that if there is no other equipment between the two roller groups during the production process, the tension should be less than 20% of the tension in the previous and subsequent sections, but it is required to be ≥0.25cN / dtex.

[0058] like Figure 2-Figure 4 As shown, the winding machine housing 1 includes multiple reels 2, a bottom plate 101, a fire prevention device 3 and a drying device 4. The fire prevention device 3 is arranged on multiple end faces of the winding machine housing 1. When a fire occurs unexpectedly, the fire prevention device 3 can be activated in time to extinguish the fire. The drying device 4 matches the reel 2. The drying device 4 dries the residual moisture of the carbon fiber filaments wound on the reel 2 to prevent the undried filaments from entering the reel 2 in step S14 without drying and entering the next step, which affects the quality of the finished product and increases the production cost.

[0059] The fire protection device 3 includes a fire extinguishing tank, a rotating fire extinguishing head 301 and a fire extinguishing nozzle 302. The fire extinguishing tank is fixedly connected to one side end surface of the winding machine housing 1. The fire extinguishing tank is preferably a carbon dioxide fire extinguishing tank to achieve rapid extinguishing of fire.

[0060] The rotating fire extinguishing head 301 is arranged on multiple end faces of the winding machine housing 1. The rotating fire extinguishing head 301 is located at the upper end face of the winding machine housing 1. The rotating fire extinguishing head 301 is a nozzle that can rotate 360 ​​degrees to spray, thereby increasing the fire extinguishing area and achieving rapid fire extinguishing.

[0061] The fire extinguishing nozzles 302 are arranged on multiple end surfaces of the winding machine housing 1, and the positions of the fire extinguishing nozzles 302 match the positions of the multiple reels 2, that is, the fire extinguishing nozzles 302 are arranged on one side end surfaces of the multiple reels 2. When a fire occurs, the fire extinguishing nozzles 302 can perform targeted fire extinguishing at the position of each reel 2, and the fire extinguishing efficiency is fast.

[0062] Preferably, a temperature sensor is provided on one end surface of each of the plurality of reels 2, so that when a fire occurs in one of the reels 2, the fire can be extinguished quickly and specifically.

[0063] The rotating fire extinguishing head 301 and the fire extinguishing nozzle 302 are both connected to the fire extinguishing tank, and temperature sensors are provided on multiple end faces of the winding machine housing 1 to achieve rapid extinguishing of the fire and reduce the loss caused by the fire.

[0064] like Figure 4 As shown, the drying device 4 includes a protective plate 401, a vacuum pump and a drying tube, so as to quickly dry the residual moisture of the carbon fiber filaments on the reel 2.

[0065] The end surface of the protective plate 401 contacting the reel 2 is provided with a plurality of heat transfer tubes 402 and a dust suction tube 405. The heat transfer tube 402 is connected to a drying tube, and the drying tube is connected to a heat source, which is the heat in the dryer used in step S14. The drying tube is connected to the dryer. That is, when the dryer used in step S14 is drying the silk strips, it will generate a large amount of heat source. The drying box of the dryer is provided with a first heat transfer tube, and the first heat transfer tube is connected to the drying tube on the winding machine housing 1, so that the heat in the dryer is transferred to the winding machine housing 1, and the heat is sprayed through the plurality of heat transfer tubes 402, so as to dry the residual moisture of the carbon fiber filaments wound on the reel 2, and prevent the undried carbon fiber filaments from directly entering the next step.

[0066] The vacuum pump includes a negative pressure pipe, which is connected to the dust suction pipe 405, so that the vacuum pump generates negative pressure through the dust suction pipe 405 to absorb dust around the reel 2 to prevent the carbon fiber from being contaminated with dust.

[0067] Furthermore, a slideway 403 is provided on the bottom plate 101, and a slide plate 404 is slidably connected in the slideway 403. The slide plate 404 and the protective plate 401 are integrally formed. A cylinder is provided on the inner wall end face of the winding machine housing 1, and the cylinder includes a piston rod. The piston rod is fixedly connected to the slide plate 404 to drive the slide plate 404 to rise or fall, and to adjust the distance between the protective plate 401 and the reel 2. It is used to adjust the distance between the protective plate 401 and the reel 2 according to the thickness of the carbon fiber filaments wound on the drying device 4, so as to better dry the carbon fiber filaments on the reel 2 or absorb dust.

[0068] Furthermore, a filter box 5 is connected between the negative pressure pipe and the dust suction pipe 405. The filter box 5 includes a plurality of filter plates 501. The filter plates 501 are fixedly connected to the inner wall end surface of the filter box 5, that is, the filter plates 501 are located on one side end surface of the winder housing 1. One side end surface of the filter box 5 is connected to the negative pressure pipe, and the other side end surface is connected to the dust suction pipe 405. When the vacuum pump is started for adsorption, the adsorbed dust passes through the filter box 5 and is filtered by the plurality of filter plates 501. The filtered gas can be directly discharged into the air.

[0069] The inner wall end surface of the filter box 5 is slidably connected with an ash storage drawer 502, and the dust filtered by the filter plate 501 falls into the ash storage drawer 502. When the dust in the ash storage drawer 502 needs to be removed, the ash storage drawer 502 can be removed from the filter box 5 for cleaning.

[0070] Preferably, during the production process, the concentration of the coagulation bath during the coagulation molding process is 30%, the temperature of the coagulation bath is 5°C, and the pH value of the coagulation bath is 9.5; the water washing process is divided into 3 sections, each section consists of 3 water washing tanks, and the rollers immersed in the water washing tanks during the water washing are all flower rollers, and the roller group at the outlet of each water washing section consists of 7 rollers, which are active roller groups, and the remaining roller groups are composed of 3 rollers, which are passive roller groups, and the dimethyl sulfoxide residue of the fiber in the last water washing tank is ≤100ppm; during the pre-oxidation process, the pre-oxidation furnace consists of a total of 6 temperature zones, the length of each temperature zone is 6m, and a roller group is set at the outlet of each temperature zone Each group consists of 7 rollers, which are active rollers, and the remaining roller groups consist of 3 rollers, which are passive rollers; the electrolysis current is adjusted in the surface treatment process, the range is 0.2A / g, the electrolysis level is 3, the fiber is 100mm away from the bottom electrode of the tank, the effective length of the electrolytic tank is 1.5m, and then washed with water. After washing, the electrolyte concentration is ≤0.1%; if there is no other equipment between the two roller groups in the production process, the tension must be less than 20% of the tension of the previous and subsequent sections, but it is required to be ≥0.25cN / dtex. The prepared carbon fiber has a strength of 5800MPa and is used in the production of winding process samples with good results.

[0071] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0072] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for preparing carbon fiber suitable for winding process, characterized in that: The method comprises the following steps: S1, polymerization: acrylonitrile and comonomer are polymerized in a dimethyl sulfoxide solution; S2, de-monomerization and degassing: under vacuum conditions, the residual acrylonitrile monomer in the polymerization solution is separated from the system to obtain a stable spinning solution; S3, coagulation and forming: the spinning solution is outputted by the spinning metering pump, flows through the buffer, enters the spinneret assembly and is ejected, adopts the dry-wet spinning process, enters the coagulation liquid and coagulates into coagulated filaments; S4, washing: washing the coagulated filaments with water, using a flower roller beating method; S5, hot water drawing: the washed silk strips are drawn 1.2 to 4 times in hot water; S6, oiling and drying and densification: Use modified silicone oil or non-silicone oil agent to oil the coagulated filaments after water washing and drawing, and use hot rollers to dry and densify, and the drying and densification temperature is 100-190°C; S7, steam drawing: use saturated steam for 1.5 to 6 times drawing; S8, heat setting: use saturated water vapor to heat set the fiber; S9, raw silk collection: using a winding machine to collect the raw silk to obtain finished raw silk; S10, pre-oxidation: oxidizing the raw silk in an environment of 200-300°C; S11, low temperature carbonization: the pre-oxidized wire strips are subjected to low temperature carbonization treatment at 300-800°C; S12, high temperature carbonization: subjecting the wire strips after low temperature carbonization treatment to high temperature carbonization treatment at 1000-1600°C; S13, surface treatment: applying current to the high temperature carbonized wire in an electrolytic solution for surface treatment, and then washing with water, wherein the electrolyte concentration after washing is ≤0.1%; S14, sizing: Before sizing, the fibers are evenly arranged on the rollers, and then immersed in the sizing tank for sizing. After sizing, the filaments are dried in a dryer; S15, carbon fiber winding: using a winding machine to collect the carbon fiber to obtain finished carbon fiber.

2. The method for preparing carbon fiber suitable for winding process according to claim 1, characterized in that: The comonomer is one or more of methyl acrylate, methyl methacrylate, acrylic acid, methacrylic acid, acrylamide, itaconic acid, ammonium itaconate, and isobutyl methacrylate.

3. A method for preparing carbon fiber suitable for winding process according to claim 1 or 2, characterized in that: When the coagulation liquid is put into the coagulation forming step S3, the concentration of the coagulation bath is controlled to be 20-40%, the temperature of the coagulation bath is controlled to be 0-10° C., and the pH value of the coagulation bath is controlled to be 9.5-11.

5.

4. A method for preparing carbon fiber suitable for winding process according to claim 1 or 2, characterized in that: The direction of the washing water flow in the S4 step is countercurrent, and the washing is divided into 3-5 sections, each section consists of 3 washing tanks, and the rollers immersed in the washing tanks during washing are all flower rollers. The roller group at the outlet of each washing section consists of 7 rollers, which are active roller groups, and the remaining roller groups consist of 3 rollers, which are passive roller groups. The water temperature of the washing is controlled at 30-70°C. Starting from the first washing tank, the concentration of dimethyl sulfoxide in the washing is gradually reduced compared with the concentration in the previous section, and the dimethyl sulfoxide residue in the fiber in the last washing tank is ≤100ppm5.

5. The method for preparing carbon fiber suitable for winding process according to claim 4, characterized in that: In the step S10, the pre-oxidation furnace used for pre-oxidation consists of 6-8 temperature zones in total, and the length of each temperature zone is 5-10m.

6. The method for preparing carbon fiber suitable for winding process according to claim 5, characterized in that: The current range in the step S13 is 0.1-0.4 A / g, the electrolysis level is ≥3, the fiber distance to the bottom electrode of the cell is ≤100 mm, and the effective length of the electrolytic cell is 1 m-2 m.

7. The method for preparing carbon fiber suitable for winding process according to claim 6, characterized in that: If there is no other equipment between the two roller groups during the production process, the tension should be less than 20% of the tension of the previous section and the next section, but is required to be ≥0.25 cN / dtex.

8. A method for preparing carbon fiber suitable for winding process according to claim 1 or 6, characterized in that: The winding machine housing includes multiple reels, a fire protection device and a drying device. The fire protection device is arranged on multiple end faces of the winding machine housing. The drying device matches the reels and dries the carbon fiber filaments wound on the reels.

9. The method for preparing carbon fiber suitable for winding process according to claim 8, characterized in that: The fire protection device comprises: Fire extinguisher; fixedly connected to one end surface of the winding machine housing; Rotating fire extinguishing heads are arranged on multiple end faces of the winder housing; Fire extinguishing nozzles are arranged on multiple end surfaces of the winding machine housing, and the positions of the fire extinguishing nozzles match the positions of the multiple reels; The rotating fire extinguishing head and the fire extinguishing nozzle are both connected with the fire extinguishing tank.

10. A method for preparing carbon fiber suitable for winding process according to claim 8 or 9, characterized in that: The drying device comprises: The end surface of the protective plate contacting the reel is provided with a plurality of heat conveying pipes and dust collecting pipes, wherein the heat conveying pipes are connected to the drying pipes; A vacuum pump, comprising a negative pressure pipe, wherein the negative pressure pipe is connected to a dust suction pipe; A drying tube connected to a heat source, wherein the heat source is the heat in the drying machine used in step S14, and the drying tube is connected to the drying machine; A filter box is connected between the negative pressure pipe and the dust suction pipe, the filter box includes a plurality of filter plates, the filter plates are fixedly connected to the inner wall end surface of the filter box, and the inner wall end surface of the filter box is provided with an ash storage drawer.

Images