A plasma broadening device for fiber bundles
By designing a plasma broadening device for fiber bundles and combining it with plasma and gas treatment components, the problem of uneven fiber bundle broadening and modification was solved, improving the mechanical properties and production efficiency of the fibers and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGLAN CHENGUANG CHEM CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-06-30
AI Technical Summary
Existing fiber bundle broadening technology suffers from problems such as low equipment utilization, low production efficiency, unstable fiber mechanical properties, complex processes and high costs, and uneven results when plasma treatment equipment is used alone.
Design a plasma broadening device for fiber bundles, combining plasma processing components and compressed gas generation unit. The fiber bundles are broadened and modified by discharge tubes. The device adopts a ring-shaped fixing plate and hollow structure design, with the discharge tubes arranged in a ring to uniformly sputter plasma. An integrated gas/plasma generator is integrated to improve efficiency.
This method achieves simultaneous broadening and modification of fiber bundles, improving the mechanical properties and production efficiency of fibers, reducing production costs, increasing equipment utilization, and producing uniform and stable processing results.
Smart Images
Figure CN224439269U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of textile and composite material production equipment, and specifically relates to a plasma broadening device for fiber bundles. Background Technology
[0002] Plasma technology is a dry processing technique characterized by low energy consumption, cleanliness, and environmental friendliness, and is widely used in the surface modification of textile materials. Plasma treatment can significantly alter the surface properties of fibers and improve their dyeing performance. After plasma treatment, the fibers, when used to form composite materials, exhibit strong adhesion between the fibers and the resin matrix.
[0003] Fiber bundle broadening refers to the process of increasing the width of a fiber bundle through specific technological means. This process is crucial in composite material manufacturing, especially in the preparation of prepregs and prepreg tapes, where the fiber bundles need to be spread and broadened to facilitate resin impregnation.
[0004] There are various methods for fiber bundle broadening, including mechanical roller broadening, airflow broadening, and ultrasonic broadening. Mechanical roller broadening uses multiple rollers to apply traction force to the fiber bundle, causing it to spread between the rollers. Ultrasonic broadening utilizes the ultrasonic cavitation effect to impact the fiber bundle, achieving broadening. Airflow broadening uses compressed air sprayed onto the fiber bundle surface, dispersing the fibers and achieving broadening. Existing fiber bundle broadening technologies all focus solely on the broadening function, implementing only the broadening function with separate devices and processes. Furthermore, the broadening process requires removing oil from the fiber surface, resulting in a lengthy process and often leading to a decrease in fiber mechanical properties.
[0005] While plasma treatment of fibers offers significant advantages in improving fiber surface properties, it also presents some drawbacks and limitations. For example, plasma treatment is often performed as a standalone process, resulting in low equipment utilization and low production efficiency. Furthermore, the limited penetration of plasma leads to uneven surface modification. Additionally, the singular approach to fiber bundle treatment in existing technologies often results in unstable fiber mechanical properties, low production efficiency, and complex processes, leading to higher fiber production costs and hindering its widespread adoption. Utility Model Content
[0006] The present invention aims to solve the above-mentioned technical problems and proposes a plasma broadening device for fiber bundles, which can simultaneously broaden and modify fibers. The processing efficiency of fiber bundles using this plasma broadening device is significantly higher than that of traditional equipment.
[0007] To achieve the above-mentioned objectives, the technical solution of this utility model is as follows:
[0008] A plasma broadening device for fiber bundles includes a plasma processing component, a plasma generating unit, and a compressed gas generating unit. The plasma processing component includes a fixed plate and a hollow structure connected together. The hollow structure is connected to the compressed gas generating unit through a gas pipe. The hollow structure is connected to the plasma generating unit through a wire. At least one discharge tube is connected to the hollow structure, and the outlet end of the discharge tube faces the fiber bundle to be processed.
[0009] Furthermore, the fixing plate is an annular flange with a hollow, annular structure.
[0010] Furthermore, the discharge tube comprises multiple tubes, which are connected in a hollow structure and arranged in a ring. The outlet ends of the discharge tubes converge and the middle part is used to pass through the fiber to be processed.
[0011] Furthermore, the discharge tube adopts a hollow tubular structure with a metal outer wall.
[0012] Furthermore, the inner diameter of the discharge tube is 0.1~10mm.
[0013] Furthermore, the discharge tube forms an angle of 0 to 90° with the axis of the annular hollow structure.
[0014] Furthermore, the outlet end of the discharge tube is inclined, and the outlet cross-section of the discharge tube faces the fiber bundle.
[0015] Furthermore, the outer wall of the hollow structure is connected to the wires of the plasma generating unit and is electrically conductive throughout.
[0016] Furthermore, the internal cavities of the hollow structure are interconnected.
[0017] Furthermore, the plasma generating unit and the compressed gas generating unit are integrated on a gas / plasma integrated generator.
[0018] The beneficial effects of this utility model are:
[0019] I. This utility model proposes a plasma broadening device for fiber bundles. The device utilizes a specific structure - a plasma processing component, and connects a compressed gas generating unit and a plasma generating unit through a gas pipe and a wire, respectively. The device can simultaneously perform two processes: fiber modification and fiber broadening, while ensuring stable and slightly improved mechanical properties of the fiber, significantly reducing fiber processing time and improving production efficiency.
[0020] Second, in this utility model, the fixing plate is an annular flange with a hollow annular structure. This structure facilitates the installation of the plasma treatment components in a suitable position on the production line for producing fiber bundles and is conducive to the stable operation of the equipment.
[0021] III. In this utility model, at least one discharge tube is required, but to improve processing efficiency and quality, it is preferable to design multiple discharge tubes. The multiple discharge tubes connected in the hollow structure are arranged in a ring. After the outlet ends of the discharge tubes converge, the middle part is used for the fiber to be processed. This device uniformly sputters plasma around the fiber, resulting in better processing results.
[0022] IV. In this utility model, the inner diameter of the discharge tube should preferably be set to 0.1~10mm. If the inner diameter is too small, the gas flow rate will be too small, resulting in poor plasma sputtering effect. If the inner diameter is too large, the plasma excitation power will be too large, which is also not conducive to control.
[0023] V. In this utility model, the discharge tube and the axial direction of the annular hollow structure form an angle of 0 to 90°. The selection of the angle is related to the sputtering effect. Different types of fibers, their movement speed, and air velocity determine the optimal angle. Generally speaking, the angle should be controlled to be 0 to 90°.
[0024] VI. In this utility model, the discharge tube adopts a hollow tubular structure with a metal outer wall, which is used to pass plasma and gas. It is also easy to process into different shapes (such as straight tube, L-shaped tube, ⌒-shaped tube, ㄑ-shaped tube, etc.) to meet production needs.
[0025] VII. In this utility model, the outlet end of the discharge tube is preferably designed as an inclined surface, the outlet cross-section of the discharge tube faces the fiber bundle, and the inner diameter of the discharge tube, the outlet cross-sectional area of the discharge tube and the voltage provided by the plasma generating unit are matched so that the plasma broadening device provides the fiber bundle with a suitable distance and intensity of plasma particle sputtering. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of this utility model.
[0027] Figure 2 This is a schematic diagram of the discharge tube.
[0028] Figure 3 This is a schematic diagram of a discharge tube with another structure.
[0029] Among them, 1. Plasma generating unit; 2. Compressed gas generating unit; 3. Fixing plate; 4. Hollow structure; 5. Gas pipe; 6. Wire; 7. Discharge tube; 8. Gas / plasma integrated generator; 7.1. Outlet end; 8.1. Gas pressure adjustment knob; 8.2. Plasma output power adjustment knob; a. Fiber before treatment; b. Fiber after treatment. Detailed Implementation
[0030] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.
[0031] Example 1
[0032] A plasma broadening device for fiber bundles belongs to the technical field of textile and composite material production equipment. It includes a plasma treatment component, a plasma generating unit 1, and a compressed gas generating unit 2. The plasma treatment component includes a fixed plate 3 and a hollow structure 4 connected together. The hollow structure 4 is connected to the compressed gas generating unit 2 through a gas pipe 5. The hollow structure 4 is connected to the plasma generating unit 1 through a wire 6. At least one discharge tube 7 is connected to the hollow structure 4. The outlet end 7.1 of the discharge tube 7 faces the fiber bundle to be treated.
[0033] The fiber bundle passes through the outlet end 7.1 of the discharge tube 7 of the plasma broadening device. During the movement, the gas pipe 5 sprays plasma onto the fiber bundle in the form of an airflow. Under the action of the airflow, the monofilaments in the fiber bundle are repelled due to the gas flow rate, and the thickness of the fiber stack decreases. Under the action of the plasma, the sizing agent attached to the original monofilaments is first removed, and then continues to act on the monofilaments, causing active groups to be generated on the surface of the monofilaments. After passing through the device, the fiber bundle becomes dispersed and active. The width of the fiber bundle treated by the plasma broadening device is increased, and the interlaminar shear strength is also improved.
[0034] Preferably, the fixing plate 3 is an annular flange, and the hollow structure 4 is annular. (Reference) Figure 1 This facilitates the stable installation of the plasma broadening device at a suitable location on the production line for producing fiber bundles. Furthermore, the discharge tubes 7 can be designed as multiple, with multiple annularly arranged discharge tubes 7 connected to a hollow ring structure 4. The outlet ends 7.1 of the discharge tubes 7 converge, and the middle section is used for the fiber to be treated. During use, plasma is uniformly sputtered around the fiber, resulting in superior treatment results.
[0035] Preferably, the outer wall of the hollow structure 4 is connected to the wire 6 of the plasma generating unit 1 and is electrically conductive throughout.
[0036] Preferably, the internal cavities of the hollow structure 4 are interconnected.
[0037] Example 2
[0038] This embodiment is a further optimization of Embodiment 1, the difference being that the inner diameter of the discharge tube 7 is 0.1~10mm. An inner diameter that is too small will result in a small gas flow rate and poor plasma sputtering effect, while an inner diameter that is too large will result in excessive plasma excitation power, which is also difficult to control.
[0039] Example 3
[0040] The difference between this embodiment and embodiments 1 and 2 is that the discharge tube 7 forms an angle of 0 to 90° with the axial direction of the annular hollow structure 4. The selection of the angle is related to the sputtering effect; different types of fibers, their movement speed, and the air velocity determine the optimal angle.
[0041] Example 4
[0042] Compared with Examples 1-3, the difference in this embodiment is that the outlet end 7.1 of the discharge tube 7 is a slope, and the outlet cross-section of the discharge tube 7 faces the fiber bundle. (Refer to...) Figure 2 The cross-sectional area of the inclined surface of the discharge tube 7 can be varied according to the fiber type and process parameters.
[0043] Preferably, the discharge tube 7 has a hollow tubular structure with a metal outer wall, which is used to pass plasma and gas, and is also easy to process into different shapes, such as... Figure 1 The straight tubular discharge tube 7 in the middle, for example Figure 3 The U-shaped tubular discharge tube 7 is designed to meet production needs.
[0044] Example 5
[0045] Compared with embodiments 1 to 4, the difference in this embodiment is that the plasma generating unit 1 and the compressed gas generating unit 2 are integrated on the gas / plasma integrated generator 8.
[0046] Example 6
[0047] Compared with Examples 1 to 5, the difference in this embodiment is that the internal cavity of the hollow structure 4 is completely interconnected; the outer wall of the hollow structure 4 is connected to the wire 6 of the plasma generating unit 1 and is electrically conductive throughout.
[0048] Example 7
[0049] Compared with embodiments 1 to 6, the difference in this embodiment is that the plasma generating unit 1 and the compressed gas generating unit 2 are integrated on the gas / plasma integrated generator 8.
[0050] Example 8
[0051] To facilitate public understanding of this solution, this embodiment uses a preferred plasma broadening device for fiber bundles as an example, and further explains the solution in conjunction with the accompanying drawings.
[0052] refer to Figure 1The plasma broadening device for fiber bundles includes a plasma processing assembly, a plasma generating unit 1, and a compressed gas generating unit 2, which are integrated on a gas / plasma integrated generator 8. The plasma processing assembly includes a fixed plate 3 and a hollow structure 4 connected together. The hollow structure 4 is connected to the compressed gas generating unit 2 through a gas pipe 5. The hollow structure 4 is connected to the plasma generating unit 1 through a wire 6. Several discharge tubes 7 are connected to the hollow structure 4, and the outlet ends 7.1 of the discharge tubes 7 are converged.
[0053] In this embodiment, the fixing plate 3 is an annular flange, the hollow structure 4 is annular, the plasma discharge tubes 7 connected on the hollow structure 4 are arranged in annular pattern, the far ends of the discharge tubes 7 are distributed in annular pattern, and the outlet end 7.1 of the discharge tubes 7 is collected and the middle part is used to pass the fiber to be processed.
[0054] In this embodiment, the inner diameter of the discharge tube 7 is 3 mm. The plasma discharge tube 7 forms a 30° angle with the axial direction of the annular hollow structure 4.
[0055] In this embodiment, the discharge tube 7 is a straight tube with a hollow central section made of metal outer wall. The outlet end 7.1 of the discharge tube 7 is beveled. Figure 2 The outlet section of the discharge tube 7 faces the fiber bundle.
[0056] In this embodiment, the plasma generating unit 1 and the compressed gas generating unit 2 are integrated on the gas / plasma integrated generator 8. The outer wall of the hollow structure 4 is connected to the wire 6 of the plasma generating unit 1 and is electrically conductive throughout, while the internal cavity of the hollow structure 4 is entirely interconnected.
[0057] refer to Figure 1 After passing through the outlet 7.1 of the discharge tube 7 of the plasma broadening device, the fiber bundle a is collected in the middle. During the movement, the gas tube 5 sprays plasma onto the fiber bundle in the form of a gas flow. Under the action of the gas flow, the monofilaments in the fiber bundle are repelled due to the gas velocity, and the thickness of the fiber stack becomes thinner. Under the action of the plasma, the sizing agent attached to the original monofilaments is first removed, and the continued action on the monofilaments after removal will generate active groups on the surface of the monofilaments. After passing through the complete device, the fiber bundle becomes dispersed and active, and the width of the broadened fiber bundle b is increased, and the interlaminar shear strength is also improved.
[0058] Taking S-glass fiber as an example, by controlling the compressed gas pressure to 0.2 MPa, the working power of the plasma generating unit 11 to 300 W, and the fiber movement speed to 2 m / min, the width of the S-glass fiber is increased from 1.5 mm to 2.2 mm, and the interlaminar shear strength of the S-glass fiber is increased from 41.2 MPa to 44.44 MPa. When the compressed gas pressure is controlled to 0.8 MPa, the working power of the plasma generating unit 11 to 800 W, and the fiber movement speed to 5 m / min, the width of the S-glass fiber is increased from 1.5 mm to 3.9 mm, and the interlaminar shear strength of the S-glass fiber is increased from 41.2 MPa to 60.2 MPa, and the interlaminar shear strength is significantly improved.
[0059] The plasma broadening device for fiber bundles proposed in this embodiment solves the problems of the single-process fiber bundle processing in the prior art, which often has problems such as unstable fiber mechanical properties, low production efficiency and complex process. At the same time, it improves equipment utilization, increases production efficiency, and reduces fiber production costs. Its ingenious and simple structure is not conducive to its widespread use.
Claims
1. A device for plasma broadening of a fiber tow, characterized by: The plasma processing assembly includes a plasma generating unit (1) and a compressed gas generating unit (2). The plasma processing assembly includes a fixed plate (3) and a hollow structure (4) connected together. The hollow structure (4) is connected to the compressed gas generating unit (2) through a gas pipe (5). The hollow structure (4) is connected to the plasma generating unit (1) through a wire (6). At least one discharge tube (7) is connected to the hollow structure (4). The outlet end (7.1) of the discharge tube (7) faces the fiber bundle to be processed.
2. A device for plasma broadening of a fiber tow according to claim 1, characterized in that: The fixing plate (3) is an annular flange, and the hollow structure (4) is annular.
3. The plasma broadening device for fiber bundles according to claim 2, characterized in that: The discharge tube (7) includes multiple tubes. The multiple discharge tubes (7) connected on the hollow structure (4) are arranged in a ring. The outlet end (7.1) of the discharge tube (7) is collected and the middle part is used to pass the fiber to be treated.
4. The plasma broadening device for fiber bundles according to claim 1, characterized in that: The discharge tube (7) has a hollow tubular structure in the middle made of a metal outer wall.
5. The plasma broadening device for fiber bundles according to claim 4, characterized in that: The inner diameter of the discharge tube (7) is 0.1~10mm.
6. The plasma broadening device for fiber bundles according to claim 1, characterized in that: The discharge tube (7) forms an angle of 0 to 90° with the axial direction of the annular hollow structure (4).
7. The plasma broadening device for fiber bundles according to claim 1, characterized in that: The outlet end (7.1) of the discharge tube (7) is an inclined surface, and the outlet section of the discharge tube (7) faces the fiber bundle.
8. The plasma broadening device for fiber bundles according to claim 1, characterized in that: The outer wall of the hollow structure (4) is connected to the wires of the plasma generating unit (1) and is electrically conductive throughout.
9. The plasma broadening device for fiber bundles according to claim 1, characterized in that: The internal cavities of the hollow structure (4) are interconnected.
10. The plasma broadening device for fiber bundles according to claim 1, characterized in that: The plasma generating unit (1) and the compressed gas generating unit (2) are integrated on the gas / plasma integrated generator (8).