Oil agent evaluation device for carbon fiber precursor

Abstract

The utility model discloses an oil agent evaluation device for a carbon fiber precursor, which relates to the technical field of performance evaluation of the oil agent for the carbon fiber precursor, and comprises a mounting shell, a filter frame rotationally arranged in the mounting shell, a driving gear ring rotationally connected to one side of the mounting shell, and a driving gear ring rotationally connected to the other side of the mounting shell, and the number of teeth in the driving gear ring accounts for half of the perimeter of the driving gear ring; the driving gear ring is connected in the driving gear ring and synchronously rotates along with rotation of the driving gear ring, and the number of teeth on the driving gear ring accounts for half of the perimeter of the driven gear; the driven gear is rotationally connected into the driving gear ring and is coaxial with the filtering frame; according to the utility model, a sample is fixed on the filter frame, the heating wire body and the air blower are started to dry the sample, and meanwhile, a unique gear transmission system is utilized to enable the filter frame to realize intermittent forward and reverse rotation under the driving of the servo motor. Therefore, the hot air can uniformly act on the sample on the filter frame, so that the sample is uniformly heated, and the drying effect is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of performance evaluation of carbon fiber precursor oil, specifically a device for evaluating oil for carbon fiber precursor. Background Technology

[0002] With the rapid development of the carbon fiber industry, it is advancing rapidly towards higher strength and higher modulus, which places higher demands on carbon fiber additives. To adapt to the rapid development of carbon fiber, the development of oiling agents for precursor fibers needs to be accelerated. However, traditional oiling agent effectiveness evaluation requires trial use on the spinning line, followed by evaluation after carbonization on the carbonization line. This verification process is lengthy and consumes a large amount of precursor and carbon fiber, resulting in huge oiling agent development costs and a long verification cycle. A complete verification process takes at least 14 days and generates a large amount of waste fiber, leading to significant waste. These factors contribute to the long development cycle and difficulties in oiling agent development.

[0003] In evaluating the performance of carbon fiber oiling agents, assessing their protective effect during the pre-oxidation process of precursor fibers is crucial. Precursor fibers are prone to problems such as parallel bonding, adhesion, and melting during pre-oxidation. Whether the oiling agent can effectively prevent these problems directly affects its performance and its large-scale application in actual production. If the oiling agent fails to provide adequate protection for the precursor fibers during pre-oxidation, it will not only lead to a decline in carbon fiber product quality but may also disrupt the entire production process, increasing production costs and reducing efficiency. Therefore, how to quickly and accurately evaluate the protective performance of the oiling agent during the pre-oxidation process of precursor fibers has become a critical issue that urgently needs to be addressed in the development of carbon fiber oiling agents. Utility Model Content

[0004] The purpose of this invention is to provide an evaluation device for oiling agents used in carbon fiber precursors, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides an oiling agent evaluation device for carbon fiber precursor, comprising a mounting housing and a filter frame rotatably disposed within the mounting housing, including,

[0006] The drive gear ring is rotatably connected to one side of the mounting housing, and the number of teeth inside it accounts for half of the circumference of the drive gear ring.

[0007] The drive gear ring is connected inside the drive gear ring and rotates synchronously with the drive gear ring. The number of teeth on it accounts for half the circumference of the driven gear.

[0008] The driven gear is rotatably connected inside the drive gear ring and is coaxially arranged with the filter frame;

[0009] The servo motor is connected to one side of the mounting shell and used to drive the driving gear ring to rotate, and the driven gear intermittently meshes with the driving gear and the driving gear ring to drive the filter frame to rotate clockwise or counterclockwise.

[0010] Further, the driving gear is connected with a connecting shaft, the connecting shaft and the driving shaft of the servo motor are both connected with synchronous wheels, and the two synchronous wheels are transmissionally connected with a synchronous belt.

[0011] Further, a plurality of electric heating wire bodies are connected in the mounting shell, and the plurality of electric heating wire bodies are linearly arranged along the width direction of the mounting shell.

[0012] Further, the bottom of the mounting shell is provided with a blower, the air outlet end of the blower is connected with an air flow control valve, and the other end of the air flow control valve is connected with an air inlet of the bottom of the mounting shell.

[0013] Further, one side of the mounting shell is connected with an electric heating wire power controller, and the electric heating wire power controller is electrically connected with the electric heating wire body.

[0014] Further, the mounting shell is further provided with a flow guide assembly, the flow guide assembly comprises a plurality of flow guide plates which are rotationally connected in the mounting shell and located below the electric heating wire body, and the plurality of flow guide plates are linearly arranged along the width direction of the mounting shell.

[0015] Further, one side of the mounting shell is connected with an electric telescopic rod, the telescopic end of the electric telescopic rod is connected with a driving rack, the driving rack is slidingly connected to the side wall of the mounting shell, one side of the mounting shell is rotationally connected with a plurality of mounting gears, and the plurality of mounting gears are coaxially arranged with the flow guide plates.

[0016] Further, the filter frame is provided with a storage cavity, a sealing door is hingedly connected to one side of the filter frame, a restraint strip is connected to the filter frame, a fixing column is connected to one side of the filter frame, and the restraint strip is used in cooperation with the fixing column to fix the sealing door.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] 1. The sample is fixed on the filter frame, the electric heating wire body and the blower are started to dry the sample, and the unique gear transmission system is used to make the filter frame realize intermittent forward and reverse rotation under the driving of the servo motor. In this way, the hot air can uniformly act on the sample on the filter frame, the sample is uniformly heated, and the drying effect is improved.

[0019] 2. The guide vanes are arranged in a linear array and are rotatable, effectively changing the direction and distribution of hot air flow. They uniformly guide hot air to different areas within the mounting housing, ensuring even heating of the filter frame and its carbon fiber filaments. This improves the uniformity and efficiency of drying. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a side view of the present invention;

[0022] Figure 3 This is a cross-sectional view of the present invention;

[0023] Figure 4 This utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0024] In the diagram: 1. Mounting housing; 2. Filter frame; 301. Driven gear; 302. Drive gear ring; 303. Drive gear; 304. Servo motor; 4. Synchronous pulley; 5. Synchronous belt; 6. Heating wire body; 7. Blower; 8. Airflow control valve; 9. Heating wire power controller; 1000. Flow guide assembly; 1001. Electric telescopic rod; 1002. Flow guide plate; 1003. Mounting gear; 1004. Drive rack; 11. Restraint strip. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-4 This utility model provides a technical solution: an oiling agent evaluation device for carbon fiber precursor, comprising a mounting housing 1 and a filter frame 2 rotatably disposed within the mounting housing 1, including,

[0027] The drive gear ring 302 is rotatably connected to one side of the mounting housing 1, and the number of teeth in it accounts for half of the circumference of the drive gear ring 302.

[0028] Drive gear ring 302 is connected inside drive gear ring 302 and rotates synchronously with drive gear ring 302. The number of teeth on it accounts for half of the circumference of driven gear 301.

[0029] Driven gear 301 is rotatably connected inside drive gear ring 302 and is coaxially arranged with filter frame 2;

[0030] A servo motor 304 is connected to one side of the mounting housing 1 and used to drive the driving gear ring 302 to rotate, and with the driving gear ring 302 rotating, the driven gear 301 is intermittently engaged with the driving gear 303 and the driving gear ring 302 to drive the filter frame 2 to rotate clockwise or counterclockwise;

[0031] A plurality of electric heating wire bodies 6 are connected in the mounting housing 1, and the plurality of electric heating wire bodies 6 are linearly arrayed along the width direction of the mounting housing 1, and the electric heating wire bodies 6 are arranged to facilitate heat generation;

[0032] The bottom of the mounting housing 1 is provided with a blower 7, the air outlet end of the blower 7 is connected with an air flow control valve 8, the other end of the air flow control valve 8 is connected with the air inlet of the bottom of the mounting housing 1, and the air flow control valve 8 is arranged to facilitate the control of the air power.

[0033] It should be noted that the overall evaluation process is as follows:

[0034] 1. Sample preparation. The raw silk is wound and fixed on a square frame, soaked in an ether solvent, and after the oil on the surface of the raw silk is washed off, the sample is dried and prepared for the next step of oiling experiment;

[0035] 2. Oiling. Select the oil sample to be verified, dilute the concentration to 0.5-2%, soak the deoiled raw silk sample in the oil diluent for 10-60s, and then place the sample in an oven for drying, with the drying temperature controlled at 100-150℃ and the drying time controlled at 30-60min;

[0036] 3. Pre-oxidation simulation. The prepared sample is placed in a pre-oxidation experiment simulation device, the hot air temperature is controlled at 300-500℃, the gas flow rate is controlled at 5-30m / s, and the sample heating time is controlled at 1-10min;

[0037] 4. Sample testing and analysis. Observe the appearance of the pre-oxidized yarn, take the middle part of the sample, prepare the sample, and place it under an electron microscope to observe whether there is adhesion, parallel state, and melting phenomenon;

[0038] During the testing and analysis,

[0039] (1), take the middle part of the sample, observe the appearance of the pre-oxidized yarn, prepare the sample, and place it under an electron microscope to observe whether there is adhesion, parallel state, and melting phenomenon. If the results are consistent after the heating time experiment, the oil can be applied in batch production;

[0040] (2), sample the middle part of the sample, observe the appearance of the pre-oxidized yarn black, sample preparation, placed under the electron microscope to observe the existence of parallel state, no melting phenomenon. Change the experimental parameters, this phenomenon still exists, this oil agent can not be tried on-line batch application, need to change the formula again;

[0041] (3), sample the middle part of the sample, observe the appearance of the pre-oxidized yarn golden yellow, sample preparation, placed under the electron microscope to observe the existence of adhesion, parallel state, no melting phenomenon. This oil agent can be tried on-line batch application.

[0042] In specific implementation, the utility model mainly designs for pre-oxidation simulation, first, the prepared sample is fixed on the filter frame 2, then the electric heating wire body 6 generates heat, and then the air blower 7 is started to blow the heat generated by the electric heating wire body 6 on the filter frame 2 to dry the sample on the filter frame 2, and in this process, to ensure the uniformity of drying, the servo motor 304 is started, which will drive the driving gear ring 302 to rotate.

[0043] The number of inner teeth of the driving gear ring 302 accounts for half of its circumference, the driven gear 301 is rotatably connected in the driving gear ring 302, and the number of teeth of the driven gear 301 also accounts for half of its circumference. The driving gear 303 is also located in the driving gear ring 302.

[0044] In the rotating process of the driving gear ring 302, the driven gear 301 will intermittently mesh with the driving gear 303 and the driving gear ring 302. When the driven gear 301 meshes with the driving gear 303, the filter frame 2 will rotate in one direction; when the driven gear 301 meshes with the driving gear ring 302, the filter frame 2 will rotate in the opposite direction, so that the hot air can uniformly act on the filter frame 2.

[0045] Through this intermittent meshing drive, the filter frame 2 can rotate clockwise or counterclockwise.

[0046] Referring to Figure 2 , the driving gear 303 is connected with a connecting shaft, the connecting shaft and the drive shaft of the servo motor 304 are both connected with synchronous wheels 4, and the two synchronous wheels 4 are transmissionally connected with a synchronous belt 5.

[0047] Preferably, chain wheels and chains can also be used for transmission, which can be selected according to actual conditions.

[0048] In specific implementation, the synchronous wheels 4 and the synchronous belt 5 can be used in cooperation to make the servo motor 304 drive the driving gear 303 to rotate synchronously.

[0049] Referring to Figure 3 , one side of the mounting shell 1 is connected with an electric heating wire power controller 9, and the electric heating wire power controller 9 is electrically connected with the electric heating wire body 6.

[0050] In particular implementation, the power controller 9 is configured to control the power of the heating wire body 6 to adjust the heating power.

[0051] With reference to Figure 3 The device further comprises a flow guide assembly 1000, which includes a plurality of flow guide plates 1002 rotatably connected in the mounting shell 1 and located below the heating wire body 6. The plurality of flow guide plates 1002 are linearly arrayed along the width direction of the mounting shell 1.

[0052] In particular implementation, the plurality of flow guide plates 1002 are rotatably connected in the mounting shell 1 and located below the heating wire body 6, and are linearly arrayed along the width direction of the mounting shell 1.

[0053] When the device is in operation, the heating wire body 6 generates heat. The flow guide plates 1002 can change the flow direction and distribution of the hot air by rotation. Since the flow guide plates 1002 are linearly arrayed, they can uniformly guide the hot air to different areas in the mounting shell 1, ensuring that the filter frame 2 and the carbon fiber precursor inside it can be uniformly heated.

[0054] With reference to Figure 4 One side of the mounting shell 1 is connected with an electric telescopic rod 1001, the telescopic end of the electric telescopic rod 1001 is connected with a driving rack 1004, the driving rack 1004 is slidingly connected on the side wall of the mounting shell 1, and a plurality of mounting gears 1003 are rotatably connected on one side of the mounting shell 1 and coaxially arranged with the flow guide plates 1002.

[0055] In particular implementation, the electric telescopic rod 1001 on one side of the mounting shell 1 serves as a driving part. When the electric telescopic rod 1001 is telescoped, the driving rack 1004 connected to the telescopic end of the electric telescopic rod 1001 will slide on the side wall of the mounting shell 1, and the plurality of mounting gears 1003 rotatably connected on one side of the mounting shell 1 are coaxially arranged with the flow guide plates 1002. During the sliding process of the driving rack 1004, the driving rack 1004 will interact with the mounting gears 1003, and when the driving rack 1004 moves, it will drive the mounting gears 1003 engaged therewith to rotate. Since the mounting gears 1003 are coaxially arranged with the flow guide plates 1002, the rotation of the mounting gears 1003 will drive the flow guide plates 1002 to rotate synchronously.

[0056] With reference to Figures 1 to 4 The filter frame 2 is provided with a storage cavity, a sealing door is hingedly connected on one side of the filter frame 2, a restraint strip 11 is connected on the filter frame 2, and a fixing column is connected on one side of the filter frame 2, and the restraint strip 11 is used in cooperation with the fixing column to fix the sealing door.

[0057] In implementation, the restraint strips 11 are used in cooperation with the fixing columns to fix the sealing door, so as to avoid the sample from falling off when the filter frame 2 rotates.

[0058] Working principle: first, fix the prepared sample on the filter frame 2, then start the electric heating wire body 6 to generate heat, and then start the air blower 7 to blow the heat generated by the electric heating wire body 6 to the filter frame 2 to dry the sample on the filter frame 2. In order to ensure the uniformity of drying, the servo motor 304 is started, which drives the driving gear ring 302 to rotate.

[0059] The number of inner teeth of the driving gear ring 302 accounts for half of its circumference, the driven gear 301 is rotationally connected in the driving gear ring 302, and the number of teeth of the driven gear 301 also accounts for half of its circumference. The driving gear 303 is also located in the driving gear ring 302.

[0060] During the rotation of the driving gear ring 302, the driven gear 301 will intermittently mesh with the driving gear 303 and the driving gear ring 302. When the driven gear 301 meshes with the driving gear 303, the filter frame 2 will rotate in one direction; when the driven gear 301 meshes with the driving gear ring 302, the filter frame 2 will rotate in the opposite direction, so that the hot air can uniformly act on the filter frame 2.

[0061] When the device is running, the electric heating wire body 6 generates heat. The flow guide plates 1002 can change the flow direction and distribution of hot air by rotating. Since the flow guide plates 1002 are arranged in a linear array, they can uniformly guide the hot air to different areas in the installation housing 1, ensuring that the filter frame 2 and the carbon fiber precursor inside it can be uniformly heated.

Claims

1. A carbon fiber precursor oil agent evaluation device comprising a mounting case (1) and a filter frame (2) rotatably provided in the mounting case (1), characterized in that, Including, The drive gear ring (302) is rotatably connected to one side of the mounting shell (1), and the number of teeth in the drive gear ring (302) accounts for half of the circumference of the drive gear ring (302); The drive gear ring (302) is connected in the drive gear ring (302) and rotates synchronously with the drive gear ring (302), and the number of teeth on the drive gear ring (302) accounts for half of the circumference of the driven gear (301); The driven gear (301) is rotatably connected in the drive gear ring (302) and coaxially arranged with the filter frame (2); The servo motor (304) is connected to one side of the mounting shell (1) and is used to drive the drive gear ring (302) to rotate, and the driven gear (301) intermittently engages with the drive gear (303) and the drive gear ring (302) to drive the filter frame (2) to rotate clockwise or counterclockwise.

2. A device for evaluating a carbon fiber precursor oil agent according to claim 1, characterized by: The drive gear (303) is connected with a connecting shaft, the connecting shaft and the drive shaft of the servo motor (304) are both connected with synchronous wheels (4), and the two synchronous wheels (4) are transmissionally connected with a synchronous belt (5).

3. The carbon fiber precursor oil agent evaluation device according to claim 1, characterized by: A plurality of electric heating wire bodies (6) are connected in the mounting shell (1), and the plurality of electric heating wire bodies (6) are linearly arrayed along the width direction of the mounting shell (1).

4. The carbon fiber precursor oil agent evaluation device according to claim 1, characterized by: The bottom of the mounting shell (1) is provided with a blower (7), the air outlet end of the blower (7) is connected with an airflow control valve (8), and the other end of the airflow control valve (8) is connected with the air inlet of the bottom of the mounting shell (1).

5. The carbon fiber precursor oil agent evaluation device according to claim 3, characterized by: One side of the mounting shell (1) is connected with an electric heating wire power controller (9), and the electric heating wire power controller (9) is electrically connected with the electric heating wire body (6).

6. A device for evaluating a carbon fiber precursor oil agent according to claim 3, characterized by: It also includes a flow guide assembly (1000) including a plurality of flow guide plates (1002) rotatably connected in the mounting shell (1) and located below the electric heating wire body (6), and the plurality of flow guide plates (1002) are linearly arrayed along the width direction of the mounting shell (1).

7. A device for evaluating a carbon fiber precursor oil agent according to claim 6, characterized by: One side of the mounting shell (1) is connected with an electric telescopic rod (1001), the telescopic end of the electric telescopic rod (1001) is connected with a drive rack (1004), the drive rack (1004) is slidably connected to the side wall of the mounting shell (1), and a plurality of mounting gears (1003) are rotatably connected to one side of the mounting shell (1). The plurality of mounting gears (1003) are coaxially arranged with the flow guide plates (1002).

8. The carbon fiber precursor oil agent evaluation device according to claim 1, characterized by: The filter frame (2) is provided with a storage cavity, a sealing door is hingedly connected to one side of the filter frame (2), a restraint strip (11) is connected to the filter frame (2), a fixing column is connected to one side of the filter frame (2), and the restraint strip (11) is used in cooperation with the fixing column to fix the sealing door.

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