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CN-121989508-A - High-temperature wire guide tube of three-dimensional knitting warp knitting machine and preparation process

CN121989508ACN 121989508 ACN121989508 ACN 121989508ACN-121989508-A

Abstract

The invention provides a high-temperature wire guide tube of a three-dimensional knitting warp knitting machine and a preparation process, which relate to the technical field of three-dimensional knitting, the high-temperature wire guide tube of the three-dimensional knitting warp knitting machine comprises a wire guide tube body, the wire guide tube body comprises an inner liner layer, a three-dimensional knitting reinforcing layer and an outer protective layer which are sequentially arranged from inside to outside, the inner wall of the inner liner is provided with a friction-resistant and temperature-resistant material layer, the three-dimensional woven reinforcing layer is woven and coated on the outer surface of the inner liner, the inner liner and the three-dimensional woven reinforcing layer are combined through a chemical vapor deposition process, the outer protective layer comprises a high-temperature resin matrix, and the outer protective layer and the three-dimensional woven reinforcing layer are combined through an autoclave co-curing process. According to the invention, the friction-resistant and temperature-resistant material layer is arranged, so that the high temperature resistance of the yarn guide tube body can be improved, the three-dimensional braiding reinforcing layer provides rigidity support for the whole structure, the yarn guide tube is prevented from deforming or cracking, the heat-resistant stability is improved by combining the outer protective layer with the three-dimensional braiding reinforcing layer, the accurate size of the yarn guide channel is ensured, and the service life of the high-temperature yarn guide tube of the warp knitting machine is prolonged.

Inventors

  • ZHU YONGFEI
  • JIA KUN
  • YI YUNZHI
  • NI JINGDA
  • Zhuang hengfei

Assignees

  • 经纬纺织机械股份有限公司
  • 江苏高路复合材料有限公司

Dates

Publication Date
20260508
Application Date
20260226

Claims (10)

  1. 1. The high-temperature wire guide tube of the three-dimensional knitting warp knitting machine is characterized by comprising a wire guide tube body, wherein the wire guide tube body comprises an inner liner (1), a three-dimensional knitting reinforcing layer (2) and an outer protective layer (3) which are sequentially arranged from inside to outside, a friction-resistant and temperature-resistant material layer is arranged on the inner wall of the inner liner (1), the three-dimensional knitting reinforcing layer (2) is knitted and coated on the outer surface of the inner liner (1), the inner liner (1) is combined with the three-dimensional knitting reinforcing layer (2) through a chemical vapor deposition process, the outer protective layer (3) comprises a high-temperature resin matrix, and the outer protective layer (3) is combined with the three-dimensional knitting reinforcing layer (2) through an autoclave co-curing process.
  2. 2. The high temperature guide wire tube of a three-dimensional knitting warp knitting machine according to claim 1, wherein the friction-resistant and temperature-resistant material layer is a ceramic coating, and the ceramic coating is at least one of alumina and zirconia.
  3. 3. A three-dimensional braiding machine high-temperature wire guide tube according to claim 1, characterized in that the three-dimensional braiding reinforcement layer (2) is formed by three-dimensional four-way or five-way braiding of carbon fibers or ceramic fibers.
  4. 4. A three-dimensional warp knitting machine high temperature guide wire tube as claimed in claim 3, characterized in that the carbon fiber is a T700 class 12K carbon fiber.
  5. 5. A three-dimensional braiding warp-knitting machine high-temperature wire guide tube according to claim 3, characterized in that the fibre volume content of the three-dimensional braiding reinforcement layer (2) is 60% -70%.
  6. 6. The high-temperature guide wire tube of the three-dimensional knitting warp knitting machine according to claim 1, wherein the thickness of the three-dimensional knitting reinforcing layer (2) accounts for 70% -80% of the total thickness of the guide wire tube body.
  7. 7. The high temperature guide wire tube of a three-dimensional knitting warp knitting machine according to claim 1, wherein the high temperature resin substrate is polyimide resin or bismaleimide resin.
  8. 8. The three-dimensional warp knitting machine high temperature guide wire tube of claim 1 wherein the decomposition temperature of the high temperature resin matrix is greater than 300 ℃.
  9. 9. The high-temperature wire guide tube of the three-dimensional knitting warp knitting machine according to claim 1, wherein a plurality of micropores (4) are uniformly distributed on the outer surface of the inner liner (1) along the circumferential direction and the axial direction of the inner liner, the micropores (4) are of an intersection type segmented structure, each micropore (4) comprises a first hole section (5) and a second hole section (6), the first hole section (5) and the second hole section (6) are arranged in an intersection mode, one end of the first hole section (5) is communicated with one end of the second hole section (6) to form an intersection end, the free end of the first hole section (5) away from the intersection end, and the free end of the second hole section (6) away from the intersection end are respectively communicated with the outer surface of the inner liner (1).
  10. 10. A process for preparing a three-dimensional knitting warp knitting machine high temperature wire guide tube, which is used for preparing the three-dimensional knitting warp knitting machine high temperature wire guide tube as claimed in any one of claims 1 to 9, and is characterized by comprising the following steps: Step 1, preparing a high alloy steel pipe as a base material, and preparing a friction-resistant and temperature-resistant material layer on the inner wall of the base material to prepare an inner liner layer (1); Step 2, braiding a three-dimensional braiding reinforcing layer (2) outside the lining layer (1) by adopting a three-dimensional braiding process, so that the three-dimensional braiding reinforcing layer (2) coats the outer surface of the lining layer (1), and then bonding the three-dimensional braiding reinforcing layer (2) and the bonding position of the lining layer (1) through a chemical vapor deposition process; and 3, coating the three-dimensional braided reinforcing layer (2) and the inner liner (1) with a high-temperature resin matrix, and putting the three-dimensional braided reinforcing layer and the inner liner into an autoclave for co-curing treatment to obtain the wire guide tube body.

Description

High-temperature wire guide tube of three-dimensional knitting warp knitting machine and preparation process Technical Field The invention relates to the technical field of three-dimensional knitting, in particular to a high-temperature wire guide tube of a three-dimensional knitting warp knitting machine and a preparation process thereof. Background The high-temperature yarn guide tube of the warp knitting machine is a core key accessory of high-temperature weaving processes such as polyester high-stretch yarn, nylon stretch yarn and the like, and has the core function of accurately guiding yarn conveying in a shaping area of 150-250 ℃, and the performance of the high-temperature yarn guide tube directly influences the fabric shaping quality and the equipment operation stability, so that three core requirements of temperature resistance stability, high-frequency friction resistance and high structural rigidity are simultaneously met. The main flow yarn guide tube in the current market is mainly divided into a single ceramic tube and a common composite material tube, and has obvious short plates with obvious performance, so that the main flow yarn guide tube is difficult to adapt to the high-speed and high-efficiency production requirements of a modern warp knitting machine; secondly, the common composite material pipe is formed by compounding epoxy resin and fiber, the temperature resistance limit is only less than or equal to 200 ℃, resin softening and thermal deformation are easy to occur when the common composite material pipe is used for a long time under a high-temperature shaping working condition, the size of a guide wire channel is offset, and further the tension stability of yarn is affected. Disclosure of Invention The invention provides a high-temperature wire guide tube of a three-dimensional knitting warp knitting machine and a preparation process thereof, which are used for solving at least one technical problem set forth in the background art. In order to solve the technical problems, the invention discloses a high-temperature wire guide tube of a three-dimensional knitting warp knitting machine, which comprises a wire guide tube body, wherein the wire guide tube body comprises an inner liner layer, a three-dimensional knitting reinforcing layer and an outer protective layer which are sequentially arranged from inside to outside, the inner wall of the inner liner layer is provided with a friction-resistant and temperature-resistant material layer, the three-dimensional knitting reinforcing layer is knitted and coated on the outer surface of the inner liner layer, the inner liner layer and the three-dimensional knitting reinforcing layer are combined through a chemical vapor deposition process, the outer protective layer comprises a high-temperature resin matrix, and the outer protective layer and the three-dimensional knitting reinforcing layer are combined through an autoclave co-curing process. Preferably, the friction-resistant and temperature-resistant material layer is a ceramic coating, and the ceramic coating is at least one of alumina and zirconia. Preferably, the three-dimensional woven reinforcement layer is formed by weaving carbon fibers or ceramic fibers in three dimensions in four or five directions. Preferably, the carbon fibers are T700 class 12K carbon fibers. Preferably, the three-dimensional woven reinforcement layer has a fiber volume content of 60% to 70%. Preferably, the thickness of the three-dimensional braided reinforcing layer is 70% -80% of the total thickness of the guide wire tube body. Preferably, the high temperature resin matrix is a polyimide resin or a bismaleimide resin. Preferably, the decomposition temperature of the high temperature resin matrix is greater than 300 ℃. Preferably, the outer surface of the lining layer is uniformly distributed with a plurality of micropores along the circumferential direction and the axial direction, the micropores are of an intersection type segmented structure, each micropore comprises a first hole section and a second hole section, the first hole section and the second hole section are arranged in an intersection mode, one end of the first hole section is communicated with one end of the second hole section to form an intersection end, the free end of the first hole section, which is far away from the intersection end, of the intersection end of the second hole Duan Yuanli is respectively communicated with the outer surface of the lining layer. The preparation process of the high-temperature wire guide tube of the three-dimensional knitting warp knitting machine is used for preparing the high-temperature wire guide tube of the three-dimensional knitting warp knitting machine and comprises the following steps of: Step 1, preparing a high alloy steel pipe as a base material, and preparing a friction-resistant and temperature-resistant material layer on the inner wall of the base material to prepare an inner liner; Step 2,