A high-strength nylon fiber and its preparation method

Abstract

The present invention belongs to the field of textile products, and specifically relates to a high-strength nylon fiber and a preparation method thereof. The nylon fiber is composed of the following parts of raw materials: 40-60 parts of nylon plastic, 30-45 parts of carbon fiber, 1-3 parts of toughening agent, 0.3-0.5 parts of antioxidant, 0.5-0.7 parts of light stabilizer, and 0.9-1.2 parts of ultraviolet absorber. During operation, the toughening agent can adopt a POE-grafted maleic anhydride toughening agent, which can make nylon molecules closely connected, increase the strength and toughness of the nylon fiber. Through the structural design of setting a cooling component between the extruder and the winding equipment to cool the extruded nylon fiber in all directions, the function of better cooling effect on the nylon fiber is realized, effectively solving the problem that the cooling effect of the nylon fiber is easily poor through spray cooling.

Description

Technical Field

[0001] The present invention belongs to the field of textile products, and more specifically, it relates to a high-strength nylon fiber and a preparation method thereof. Background Art

[0002] Nylon fiber is a synthetic fiber, generally referring to nylon 66, which is a fiber product produced by synthesizing high molecular polymers. It has good wear resistance, fatigue resistance, hygroscopicity, etc., and is widely used in the field of textile products.

[0003] A Chinese patent with the publication number CN103603082B discloses a nylon 66 monofilament and its production method. This invention discloses a nylon 66 monofilament with high strength, high elongation at break, and low thermal shrinkage rate, which can meet the special requirements in fields such as safety airbag filaments, tires, aircraft tires, special tires, parachutes, military tent conveyor belts, industrial filter cloths, ropes, seat belts, and military products. The diameter of this nylon 66 monofilament is 0.02 - 0.07 mm, the thermal shrinkage rate ≤ 10%, and the elongation at break is 30 - 40%.

[0004] In the prior art, the prepared nylon fibers usually have relatively sparse connections between nylon molecules, resulting in poor strength and toughness of the nylon fibers. During the use of nylon fibers, it is easy to encounter the situation where the applied force is small, but the nylon fiber breaks, which affects the use of nylon fibers.

[0005] Therefore, the present invention provides a high-strength nylon fiber and a preparation method thereof. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A high-strength nylon fiber of the present invention is composed of the following parts by weight of raw materials, wherein 40 - 60 parts of nylon plastic, 30 - 45 parts of carbon fiber, 1 - 3 parts of toughening agent, 0.3 - 0.5 parts of antioxidant, 0.5 - 0.7 parts of light stabilizer, 0.9 - 1.2 parts of ultraviolet absorber. During operation, the toughening agent can adopt a POE-grafted maleic anhydride toughening agent, which can make the nylon molecules closely connected, and can increase the strength and toughness of the nylon fiber.

[0008] A preparation method of a high-strength nylon fiber, which is applicable to the above-mentioned high-strength nylon fiber, and the method comprises the following steps:

[0009] S1: Put the nylon plastic into the reaction kettle and heat the nylon plastic to melt it. After it is melted, put carbon fiber into the reaction kettle and then stir it to make it evenly mixed;

[0010] S2: After the raw materials inside the reaction kettle are stirred evenly, a toughening agent, an antioxidant, a light stabilizer, and an anti-ultraviolet agent can be added to the inside of the reaction kettle in sequence, and they are stirred evenly.

[0011] S3: After the raw materials inside the reaction kettle are completely stirred evenly, it can be naturally cooled to room temperature, and then the raw materials are cut into pieces by a cutting machine. Then, the raw materials in the shape of pieces can be put into the inside of a screw extruder and extruded to form nylon fiber filaments.

[0012] S4: When the nylon fiber filaments are extruded, they can be cooled and shaped by a cooling device. After they are shaped, they can be wound by a winding device, thereby realizing the preparation of nylon fiber filaments.

[0013] Preferably, the usage steps of the cooling device are as follows:

[0014] S11: After injecting cooling water into the cooling box body, place it between the extruder and the winding device, and control the extruder to extrude a section of nylon fiber filaments so that they are cooled and shaped inside the cooling box body.

[0015] S12: Place this section of nylon fiber filaments inside the guiding bottom sleeve, and then cover and fix the guiding cover on the top of the guiding bottom sleeve to fix the nylon fiber filaments, and then fix the end of the nylon fiber filaments on the winding device.

[0016] S13: Start the extruder to continuously extrude nylon fiber filaments, and at the same time control the winding device to synchronously wind the nylon fiber filaments, so that the nylon fiber filaments pass through the inside of the cooling box body, continuously cool the nylon fiber filaments. After the nylon fiber filaments are extruded and wound on the winding device, the preparation of nylon fiber filaments can be completed.

[0017] Preferably, the cooling device includes a cooling box body; a guiding component is arranged inside the cooling box body, and the guiding component can guide the nylon fiber filaments passing through the cooling box body; during operation, when it is necessary to cool the extruded nylon fiber filaments, the cooling box body filled with cooling water can be arranged between the extruder and the winding roller, and then the nylon fiber filaments are wound on the surface of the winding roller. The nylon fiber filaments can be first immersed in the inside of the cooling box body, and then the cooling water inside the cooling box body is used to cool the nylon fiber filaments. By immersing the nylon fiber filaments in the cooling water, the orientation of cooling the nylon fiber filaments can be more comprehensive, so that the cooling effect can be better. At the same time, the guiding component can guide the nylon fiber filaments, so that the time and position of each part of the nylon fiber filaments cooling inside the cooling box body are more consistent, so that the cooling effect on the nylon fiber filaments can be better.

[0018] Preferably, the guiding assembly includes a guiding bottom sleeve; the guiding bottom sleeve is fixedly connected to the inside of the cooling box body through a support rod; a guiding cover sleeve is arranged at the top of the guiding bottom sleeve; a T-shaped fixing block is fixedly connected to the bottom of the guiding cover sleeve; a fixing groove adapted to the T-shaped fixing block is formed inside the guiding bottom sleeve; a sealing strip is fixedly connected to the bottom of the T-shaped fixing block; a sealing groove adapted to the sealing strip is formed inside the fixing groove; fiber passing grooves corresponding to each other are formed inside the guiding cover sleeve and the guiding bottom sleeve; a plurality of water passing holes are formed on the side walls of the guiding cover sleeve and the guiding bottom sleeve. During operation, when nylon fiber filaments need to be cooled, a small section of nylon fiber filaments can be first extruded and allowed to fall inside the cooling box body. After cooling, they can be placed inside the guiding bottom sleeve, and then the guiding cover sleeve can be covered on the top of the guiding bottom sleeve to fix the nylon fiber filaments. Then, the other end of the nylon fiber filaments can be fixed on the winding device, and subsequently, the subsequent nylon fiber filaments can be wound. By guiding the nylon fiber filaments through the guiding cover sleeve and the guiding bottom sleeve, the cooling time and cooling position of the nylon fiber filaments inside the cooling box body can be made more stable. At the same time, through the water passing holes formed on the surfaces of the guiding cover sleeve and the guiding bottom sleeve, the water inside the cooling box body can enter between the guiding cover sleeve and the guiding bottom sleeve using the principle of a communicating vessel, and at the same time, the water inside the cooling box body can be exchanged with the water inside the guiding cover sleeve and the guiding bottom sleeve, effectively reducing the situation where the local cooling water temperature is too high.

[0019] Preferably, a plurality of grinding sheets are fixedly connected to the inside of both the guiding cover sleeve and the guiding bottom sleeve; the grinding sheets are regularly distributed inside both the guiding cover sleeve and the guiding bottom sleeve; the mesh number of the grinding sheets is set in an increasing manner, and the mesh number of the grinding sheet closest to the winding device is the largest. During operation, when the nylon fiber filaments pass through the inside of the guiding cover sleeve and the guiding bottom sleeve, the surface of the nylon fiber filaments can be ground by the grinding sheets, and the closer to the winding device, the smoother the surface of the nylon fiber filaments can be made. The debris generated by grinding can be washed and cleaned by the cooling water, and at the same time, the heat generated during the grinding process can also be cooled by the cooling water.

[0020] Preferably, a rolling wheel is rotatably connected to the inside of the water passing hole; the rolling wheel extends into the inside of the guiding cover sleeve and the guiding bottom sleeve. During operation, when the nylon fiber filaments pass between the guiding cover sleeve and the guiding bottom sleeve, the nylon fiber filaments can be lifted by the rolling of the rolling wheel, effectively reducing the friction caused by the angle between the nylon fiber filaments and the water passing hole and preventing damage to the surface of the nylon fiber filaments.

[0021] Preferably, a rotating shaft is rotatably connected inside the guiding cap sleeve; a plurality of water stirring plates are fixedly connected to the side wall of the rotating shaft and are arranged in a circular pattern; a synchronous belt is connected between the rotating shaft of the rolling wheel and the rotating shaft; during operation, when the nylon fiber filament passes between the guiding cap sleeve and the guiding bottom sleeve and drives the rolling wheel to rotate, the rolling wheel will drive the rotating shaft to rotate through the synchronous belt, and then the rotating shaft can drive the water stirring plates to rotate, so as to stir the water inside the cooling box body through the water stirring plates, so that the heat conduction speed in the water is faster and the cooling effect on the nylon fiber filament is better.

[0022] Preferably, the water stirring plate is arranged in an arc shape with the end facing the rotating direction of the rotating shaft; during operation, when the water stirring plate stirs the cooling water, the arc-shaped water stirring plate can make the contact area between the water stirring plate and the cooling water larger, so that the force of the water stirring plate to stir the water is greater and the range of stirring the water is also larger.

[0023] Preferably, a connecting vertical arm is fixedly connected to the top of the cooling box body; an installation ring is fixedly connected to the end of the connecting vertical arm; a water scraping pad is fixedly connected inside the installation ring; the installation ring is arranged on one side corresponding to the discharge ports of the guiding cap sleeve and the guiding bottom sleeve; during operation, when the nylon fiber filament passes through the guiding cap sleeve and the guiding bottom sleeve and before being wound by the winding device, it can pass through the installation ring, and then when the nylon fiber filament passes through the installation ring, the residual cooling water on the surface of the nylon fiber filament can be scraped off by the water scraping pad, so that the nylon fiber filament is drier.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. For the high-strength nylon fiber and its preparation method of the present invention, by adding a POE-grafted maleic anhydride toughening agent to the nylon fiber, the effect of making nylon molecules closely connected can be achieved, and thus the strength and toughness of the nylon fiber can be increased.

[0026] 1. For the high-strength nylon fiber and its preparation method of the present invention, through the structural design of arranging a cooling component between the extruder and the winding device to cool the extruded nylon fiber comprehensively, the function of better cooling effect on the nylon fiber can be realized, and effectively solves the problem that the cooling effect of the nylon fiber is not good easily caused by spray cooling.

[0027] 2. For the high-strength nylon fiber and its preparation method of the present invention, through the structural design of arranging a rolling wheel inside the guiding cap sleeve and the guiding bottom sleeve to drive the rotating shaft to rotate and then drive the water stirring plates to rotate, the function of increasing the cooling water circulation speed between the inside of the guiding cap sleeve and the guiding bottom sleeve and the outside can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 is the process flow diagram of a preparation method of high-strength nylon fiber in the present invention;

[0030] Figure 2 is the usage flow diagram of the cooling device in the present invention;

[0031] Figure 3 is the perspective view of the cooling device in the present invention;

[0032] Figure 4 is the front sectional view of the cooling device in the present invention;

[0033] Figure 5 is the partial perspective view of the guiding cover sleeve in the present invention;

[0034] Figure 6 is Figure 4 the partial enlarged view at position A in;

[0035] Figure 7 is Figure 6 the partial enlarged view at position B in;

[0036] Figure 8 is the partial structural schematic diagram of the wiper pad in the present invention.

[0037] In the figure: 1. Cooling box body; 2. Guiding cover sleeve; 3. Guiding bottom sleeve; 4. Support rod; 5. Sealing strip; 6. Sealing groove; 7. Water passing hole; 8. Grinding sheet; 9. Rolling wheel; 10. Rotating shaft; 11. Synchronous belt; 12. Water stirring plate; 13. Connecting vertical arm; 14. Installation ring; 15. Wiper pad. Specific embodiments

[0038] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0039] Embodiment 1

[0040] A kind of high-strength nylon fiber, the nylon fiber is composed of the following parts of raw materials: 40 - 60 parts of toluene diisocyanate nylon plastic, 30 - 45 parts of carbon fiber, 1 - 3 parts of toughening agent, 0.3 - 0.5 parts of antioxidant, 0.5 - 0.7 parts of light stabilizer, 0.9 - 1.2 parts of ultraviolet absorber.

[0041] Embodiment 2

[0042] A kind of high-strength nylon fiber, the nylon fiber is composed of the following parts of raw materials: 40 - 60 parts of toluene diisocyanate nylon plastic, 30 - 45 parts of carbon fiber, 3 - 5 parts of toughening agent, 0.3 - 0.5 parts of antioxidant, 0.5 - 0.7 parts of light stabilizer, 0.9 - 1.2 parts of ultraviolet absorber.

[0043] Example 3

[0044] A high-strength nylon fiber, which is composed of the following parts by weight of raw materials: 40-60 parts of toluene diisocyanate nylon plastic, 30-45 parts of carbon fiber, 0.5-1 part of toughening agent, 0.3-0.5 part of antioxidant, 0.5-0.7 part of light stabilizer, and 0.9-1.2 parts of ultraviolet absorber.

[0045] The nylon fibers prepared in Examples 1 to 3 were tested respectively. Example 1 of the present invention has better toughness and tensile resistance.

[0046] As Figure 1 shown, a preparation method of a high-strength nylon fiber according to an embodiment of the present invention, which is applicable to manufacturing the above-mentioned high-strength nylon fiber, and the method comprises the following steps:

[0047] S1: Put the nylon plastic into the interior of the reaction kettle, heat the nylon plastic to melt it, and after it is completely melted, put carbon fiber into the interior of the reaction kettle, and then stir it to make it evenly stirred;

[0048] S2: After the raw materials in the reaction kettle are completely stirred, a toughening agent, an antioxidant, a light stabilizer and an ultraviolet absorber can be added into the reaction kettle in sequence, and stirred evenly;

[0049] S3: After the raw materials in the reaction kettle are completely stirred evenly, it can be naturally cooled to room temperature, and then the raw materials are cut into pieces by a cutting machine, and then the raw materials in the shape of pieces can be put into the interior of a screw extruder and extruded to form nylon fiber filaments;

[0050] S4: When the nylon fiber filaments are extruded, they can be cooled and shaped by a cooling device. After they are completely shaped, they can be wound by a winding device, so as to realize the preparation of nylon fiber filaments.

[0051] As Figure 2 shown, the using steps of the cooling device are as follows:

[0052] S11: After injecting cooling water into the cooling box body 1, place it between the extruder and the winding device, and control the extruder to extrude a section of nylon fiber filaments, so that they are cooled and shaped inside the cooling box body 1;

[0053] S12: Place this section of nylon fiber filaments inside the guiding bottom sleeve 3, and then cover and fix the guiding cover sleeve 2 on the top of the guiding bottom sleeve 3 to fix the nylon fiber filaments, and then fix the end of the nylon fiber filaments on the winding device;

[0054] S13: Start the extruder to continuously extrude nylon fiber filaments. At the same time, control the winding device to synchronously wind the nylon fiber filaments, so that the nylon fiber filaments pass through the inside of the cooling box 1, continuously cooling the nylon fiber filaments. After the nylon fiber filaments are extruded and wound on the winding device, the preparation of the nylon fiber filaments can be completed.

[0055] As Figures 3 to 4 shown, the cooling device includes a cooling box 1; a guiding component is arranged inside the cooling box 1, and the guiding component can guide the nylon fiber filaments passing through the cooling box 1; during operation, when it is necessary to cool the extruded nylon fiber filaments, the cooling box 1 filled with cooling water can be arranged between the extruder and the winding roller, and then the nylon fiber filaments are wound on the surface of the winding roller. The nylon fiber filaments can be first immersed in the inside of the cooling box 1, and then the cooling water inside the cooling box 1 is used to cool the nylon fiber filaments. By immersing the nylon fiber filaments in the cooling water, the orientation of cooling the nylon fiber filaments can be made more comprehensive, so that the cooling effect can be better. At the same time, the guiding component can guide the nylon fiber filaments, so that the time and position of each part of the nylon fiber filaments cooling inside the cooling box 1 are more consistent, and thus the cooling effect on the nylon fiber filaments can be better.

[0056] As Figures 3 to 5 shown, the guiding component includes a guiding bottom sleeve 3; the guiding bottom sleeve 3 is fixedly connected to the inside of the cooling box 1 through a support rod 4; a guiding cover sleeve 2 is arranged on the top of the guiding bottom sleeve 3; a T-shaped fixing block is fixedly connected to the bottom of the guiding cover sleeve 2; a fixing groove adapted to the T-shaped fixing block is opened inside the guiding bottom sleeve 3; a sealing strip 5 is fixedly connected to the bottom of the T-shaped fixing block; a sealing groove 6 adapted to the sealing strip 5 is opened inside the fixing groove; fiber passing grooves corresponding to each other are opened inside the guiding cover sleeve 2 and the guiding bottom sleeve 3; a plurality of water passing holes 7 are opened on the side walls of the guiding cover sleeve 2 and the guiding bottom sleeve 3; during operation, when it is necessary to cool the nylon fiber filaments, a small section of nylon fiber filaments can be first extruded. After it falls into the inside of the cooling box 1 and is cooled, it can be placed inside the guiding bottom sleeve 3, and then the guiding cover sleeve 2 is covered on the top of the guiding bottom sleeve 3 to fix the nylon fiber filaments. Then, the other end of the nylon fiber filaments can be fixed on the winding device, and then the subsequent nylon fiber filaments can be wound. By guiding the nylon fiber filaments through the guiding cover sleeve 2 and the guiding bottom sleeve 3, the cooling time and cooling position of the nylon fiber filaments inside the cooling box 1 can be made more stable. At the same time, through the water passing holes 7 opened on the surfaces of the guiding cover sleeve 2 and the guiding bottom sleeve 3, the water inside the cooling box 1 can enter between the guiding cover sleeve 2 and the guiding bottom sleeve 3 by the principle of a communicating vessel, and at the same time, the water inside the cooling box 1 and the guiding cover sleeve 2 and the guiding bottom sleeve 3 can be exchanged, effectively reducing the situation where the temperature of the local cooling water is too high.

[0057] As Figure 6 shown, several grinding sheets 8 are fixedly connected inside both the guiding cover sleeve 2 and the guiding bottom sleeve 3; the grinding sheets 8 are regularly distributed inside both the guiding cover sleeve 2 and the guiding bottom sleeve 3; the mesh number of the grinding sheets 8 is set in an increasing manner, and the grinding sheet 8 closest to the winding equipment has the largest mesh number; during operation, when the nylon fiber filaments pass through the inside of the guiding cover sleeve 2 and the guiding bottom sleeve 3, the surface of the nylon fiber filaments can be ground by the grinding sheets 8, and the closer to the winding equipment, the smoother the surface of the nylon fiber filaments can be made. The debris generated by grinding can be cleaned by flushing with cooling water, and at the same time, the heat generated during the grinding process can also be cooled by the cooling water.

[0058] As Figure 6 shown, a rolling wheel 9 is rotatably connected inside the water passing hole 7; the rolling wheel 9 extends into the inside of the guiding cover sleeve 2 and the guiding bottom sleeve 3; during operation, when the nylon fiber filaments pass between the guiding cover sleeve 2 and the guiding bottom sleeve 3, the rolling of the rolling wheel 9 can support the nylon fiber filaments, effectively reducing the friction caused by the angle between the nylon fiber filaments and the water passing hole 7 and preventing damage to the surface of the nylon fiber filaments.

[0059] As Figures 6 to 7 shown, a rotating shaft 10 is rotatably connected inside the guiding cover sleeve 2; several water stirring plates 12 are fixedly connected to the side wall of the rotating shaft 10 and are arranged in a circular pattern; a synchronous belt 11 is connected between the rotating shaft of the rolling wheel 9 and the rotating shaft 10; during operation, when the nylon fiber filaments pass between the guiding cover sleeve 2 and the guiding bottom sleeve 3 and drive the rolling wheel 9 to rotate, the rolling wheel 9 will drive the rotating shaft 10 to rotate through the synchronous belt 11, and then the rotating shaft 10 can drive the water stirring plates 12 to rotate, thereby stirring the water inside the cooling box body 1 through the water stirring plates 12, so that the heat conduction speed in the water can be faster and the cooling effect on the nylon fiber filaments can be better.

[0060] As Figure 7 shown, the water stirring plate 12 is arranged in an arc shape with the end facing the rotating direction of the rotating shaft 10; during operation, when the water stirring plate 12 stirs the cooling water, the arc-shaped water stirring plate 12 can make the contact area between the water stirring plate 12 and the cooling water larger, so that the strength of the water stirring plate 12 stirring the water can be greater and the range of stirring the water will also be larger.

[0061] As Figure 8As shown, a connecting vertical arm 13 is fixedly connected to the top of the cooling box body 1; an installation ring 14 is fixedly connected to the end of the connecting vertical arm 13; a wiper pad 15 is fixedly connected to the inside of the installation ring 14; the installation ring 14 is arranged on one side corresponding to the discharge ports of the guiding cover sleeve 2 and the guiding bottom sleeve 3; during operation, when the nylon fiber filaments pass through the guiding cover sleeve 2 and the guiding bottom sleeve 3 and before being wound by the winding device, they can pass through the installation ring 14, and then when the nylon fiber filaments pass through the installation ring 14, the residual cooling water on the surface of the nylon fiber filaments can be scraped off by the wiper pad 15, so that the nylon fiber filaments can be made drier.

[0062] During operation, when it is necessary to cool the extruded nylon fiber filaments, the cooling box body 1 filled with cooling water can be arranged between the extruder and the winding roller, and then the nylon fiber filaments can be wound on the surface of the winding roller. The nylon fiber filaments can be first immersed in the inside of the cooling box body 1, and then the cooling water inside the cooling box body 1 is used to cool the nylon fiber filaments. By immersing the nylon fiber filaments in the cooling water, the cooling orientation of the nylon fiber filaments can be made more comprehensive, so that the cooling effect can be better. At the same time, the guiding assembly can guide the nylon fiber filaments, so that the time and position of each part of the nylon fiber filaments during cooling inside the cooling box body 1 can be more consistent, and thus the cooling effect on the nylon fiber filaments can be better.

[0063] When it is necessary to cool the nylon fiber filaments, a small section of nylon fiber filaments can be first extruded and allowed to fall into the inside of the cooling box body 1 for cooling. After that, it can be placed inside the guiding bottom sleeve 3, and then the guiding cover sleeve 2 can be covered on the top of the guiding bottom sleeve 3 to fix the nylon fiber filaments. Then, the other end of the nylon fiber filaments can be fixed on the winding device, and then the subsequent nylon fiber filaments can be wound. By guiding the nylon fiber filaments through the guiding cover sleeve 2 and the guiding bottom sleeve 3, the cooling time and cooling position of the nylon fiber filaments inside the cooling box body 1 can be made more stable. At the same time, through the water passing holes 7 opened on the surfaces of the guiding cover sleeve 2 and the guiding bottom sleeve 3, the water inside the cooling box body 1 can enter between the guiding cover sleeve 2 and the guiding bottom sleeve 3 by the principle of the communicating vessel, and at the same time, the water inside the cooling box body 1 can be exchanged with the water inside the guiding cover sleeve 2 and the guiding bottom sleeve 3, effectively reducing the situation where the temperature of the local cooling water is too high.

[0064] When the nylon fiber filaments pass through the inside of the guiding cover sleeve 2 and the guiding bottom sleeve 3, the surface of the nylon fiber filaments can be polished by the polishing piece 8, and the closer to the winding device, the smoother the surface of the nylon fiber filaments can be made. The debris generated by polishing can be washed and cleaned by the cooling water, and at the same time, the heat generated during the polishing process can also be cooled by the cooling water.

[0065] When the nylon fiber filament passes between the guiding cover sleeve 2 and the guiding bottom sleeve 3, the nylon fiber filament can be lifted by the rolling of the rolling wheel 9, effectively reducing the friction caused by the angle between the nylon fiber filament and the water through holes 7 and preventing damage to the surface of the nylon fiber filament.

[0066] When the nylon fiber filament passes between the guiding cover sleeve 2 and the guiding bottom sleeve 3 and drives the rolling wheel 9 to rotate, the rolling wheel 9 will drive the rotating shaft 10 to rotate through the synchronous belt 11. Furthermore, the rotating shaft 10 can drive the water stirring plate 12 to rotate, thereby stirring the water inside the cooling box body 1 through the water stirring plate 12, enabling the heat conduction speed inside the water to be faster and achieving a better cooling effect on the nylon fiber filament.

[0067] When the water stirring plate 12 stirs the cooling water, the arc-shaped water stirring plate 12 can make the contact area between the water stirring plate 12 and the cooling water larger, thereby enabling the water stirring plate 12 to stir the water with greater force and a larger range.

[0068] After the nylon fiber filament passes between the guiding cover sleeve 2 and the guiding bottom sleeve 3 and before being wound by the winding device, it can pass through the mounting ring 14. Furthermore, when the nylon fiber filament passes through the mounting ring 14, the residual cooling water on the surface of the nylon fiber filament can be scraped off by the water scraping pad 15, making the nylon fiber filament drier.

[0069] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention.

[0070] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing high-strength nylon fiber, characterized in that: The high-strength nylon fiber is composed of the following parts of raw materials, where nylon plastic 40 - 60 parts carbon fiber 30 - 45 parts toughness agent 1 - 3 parts antioxidant 0.3 - 0.5 parts light stabilizer 0.5 - 0.7 parts ultraviolet ray resistant agent 0.9 - 1.2 parts; The preparation method of the high-strength nylon fiber includes the following steps: S1: Put the nylon plastic into the inside of the reaction kettle, heat the nylon plastic to melt it. After it is melted, put the carbon fiber into the inside of the reaction kettle, and then stir it to make it evenly stirred; S2: After the raw materials inside the reaction kettle are stirred evenly, the toughness agent, antioxidant, light stabilizer and ultraviolet ray resistant agent can be added into the reaction kettle in sequence, and stir them evenly; S3: After the raw materials inside the reaction kettle are completely stirred evenly, let it cool naturally to room temperature, then cut the raw materials into pieces by a cutting machine, and then put the raw materials in the shape of pieces into the inside of a screw extruder to extrude them into nylon fiber filaments; S4: When the nylon fiber filaments are extruded, they can be cooled and shaped by a cooling device. After it is shaped, it can be wound by a winding device, so that the preparation of the nylon fiber filaments can be realized; Among them, the usage steps of the cooling device are as follows: S11: After injecting cooling water into the cooling box body (1), place it between the extruder and the winding device, control the extruder to extrude a section of nylon fiber filaments, so that it is cooled and shaped inside the cooling box body (1); S12: Place this section of nylon fiber filaments inside the guiding bottom sleeve (3), then cover and fix the guiding cover sleeve (2) on the top of the guiding bottom sleeve (3) to fix the nylon fiber filaments, and then fix the end of the nylon fiber filaments on the winding device; S13: Start the extruder to continuously extrude nylon fiber filaments, and at the same time control the winding device to synchronously wind the nylon fiber filaments, so that the nylon fiber filaments pass through the inside of the cooling box body (1), continuously cool the nylon fiber filaments. After the nylon fiber filaments are extruded and wound on the winding device, the preparation of the nylon fiber filaments can be completed; The cooling device includes a cooling box body (1); a guiding component is arranged inside the cooling box body (1), and the guiding component can guide the nylon fiber filaments passing through the cooling box body (1); The guiding component includes a guiding bottom sleeve (3); the guiding bottom sleeve (3) is fixedly connected inside the cooling box body (1) through a support rod (4); a guiding cover sleeve (2) is arranged on the top of the guiding bottom sleeve (3); a T-shaped fixing block is fixedly connected to the bottom of the guiding cover sleeve (2); a fixing groove adapted to the T-shaped fixing block is opened inside the guiding bottom sleeve (3); a sealing strip (5) is fixedly connected to the bottom of the T-shaped fixing block; a sealing groove (6) adapted to the sealing strip (5) is opened inside the fixing groove; fiber passing grooves corresponding to each other are opened inside the guiding cover sleeve (2) and the guiding bottom sleeve (3); a plurality of water passing holes (7) are opened on the side walls of the guiding cover sleeve (2) and the guiding bottom sleeve (3); A number of abrasive discs (8) are fixedly connected inside both the guiding cover sleeve (2) and the guiding bottom sleeve (3); the abrasive discs (8) are regularly distributed inside both the guiding cover sleeve (2) and the guiding bottom sleeve (3); the mesh number of the abrasive discs (8) is set in an increasing manner, and the abrasive disc (8) closest to the winding equipment has the largest mesh number; A rolling wheel (9) is rotatably connected inside the water through hole (7); the rolling wheel (9) extends into the inside of the guiding cover sleeve (2) and the guiding bottom sleeve (3); A rotating shaft (10) is rotatably connected inside the guiding cover sleeve (2); a number of water stirring plates (12) are fixedly connected to the side wall of the rotating shaft (10) and are arranged in a circular pattern; a synchronous belt (11) is connected between the rotating shaft of the rolling wheel (9) and the rotating shaft (10); The water stirring plate (12) is arranged in an arc shape with its end facing the rotating direction of the rotating shaft (10); A connecting vertical arm (13) is fixedly connected to the top of the cooling box body (1); an installation ring (14) is fixedly connected to the end of the connecting vertical arm (13); a water scraping pad (15) is fixedly connected inside the installation ring (14); the installation ring (14) is arranged on one side corresponding to the discharge ports of the guiding cover sleeve (2) and the guiding bottom sleeve (3).

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