CN-121989472-A - Manufacturing method of cable with carbon fiber tendons

CN121989472ACN 121989472 ACN121989472 ACN 121989472ACN-121989472-A

Abstract

The invention provides a cable manufacturing method of a carbon fiber tendon, which comprises the following steps of S1, setting structural parameters of the carbon fiber tendon according to mechanical property requirements and section specifications of a target cable, distributing N carbon fiber tendons into M groups according to initial physical states of the N carbon fiber tendons, wherein each group corresponds to a specific section in a section, S2, respectively guiding the carbon fiber tendons in each section through M independent guide channels, respectively configuring the geometric configuration and surface characteristics of each guide channel according to the target structural parameters of the corresponding section, S3, adopting a low-constraint primary sizing die to carry out primary sizing on the outer wheels of the carbon fiber tendons, S4, sequentially enabling the primarily-sized carbon fiber tendons to pass through a compaction sizing die connected in series, and S5, enabling the compaction die to enter a curing furnace for curing to obtain the cable meeting the requirements, thereby realizing high molding precision and high section compactness, and enhancing the overall mechanical property, fatigue life and long-term service reliability of the carbon fiber mooring cable.

Inventors

ZHAO HU
TONG NINGJUN
ZHANG YIRUI
WEI XING
LIU WEIQING
LI QIANG

Assignees

江苏绿材谷新材料科技发展有限公司

Dates

Publication Date: 20260508
Application Date: 20260313

Claims (9)

1. A manufacturing method of a cable of a carbon fiber tendon is characterized by comprising the following steps of S1, setting structural parameters of the carbon fiber tendon according to mechanical property requirements and section specifications of a target cable, wherein the structural parameters comprise a section division number M, an interlayer target dislocation angle theta and a division target compactness rho of each division, distributing N carbon fiber tendons into M groups according to initial physical states of the N carbon fiber tendons, each group corresponds to a specific division in a section, S2, respectively guiding the carbon fiber tendons of each division through M independent guide channels, carrying out independent configuration on the geometric configuration and surface characteristics of each guide channel according to the target structural parameters of the corresponding division, S3, adopting a low-constraint primary sizing die to carry out primary sizing on the outer outline of the carbon fiber tendons, S4, sequentially passing the primarily-sized carbon fiber tendons through a compaction die, wherein the sizing die is provided with a reduced die cavity aperture and a progressively increased pressure application level, at least one middle-stage compaction die is internally provided with a compaction die cavity corresponding to the specific division in the section, and the sizing die is provided with a progressively increased pressure application level corresponding to the sizing die cavity diameter of the sizing die, and the primary sizing die is provided with a primary sizing die, the primary sizing die is provided with a primary sizing die, and a sizing die has a primary sizing die has a lower compression pressure.
2. The method according to claim 1, wherein the value range of the number M of the cross-sectional areas in the step S1 is 2-5, the value range of the target dislocation angle θ between layers is 5-20, and the value range of the target compactness ρ of each area is 60-75%.
3. The method for manufacturing a cable of carbon fiber bundles according to claim 2, wherein in the step S1, the N carbon fiber bundles are distributed into M groups according to their initial physical states, specifically including on-line tension monitoring and diameter measurement of the carbon fiber bundles, and distributing bundles with similar performances to the same partition according to the measurement results.
4. A method of manufacturing a cable of carbon fiber reinforcement according to claim 3, wherein the geometry of the guide channel in step S2 includes an entrance guide angle α ranging from 5 ° to 20 °, the surface characteristic includes a coefficient of friction μ of the inner wall of the channel ranging from 0.1 to 0.4, and the surface characteristic is achieved by material selection, surface treatment, or lubrication.
5. The method according to claim 4, wherein the guiding channel in the step S2 is an annular channel, and the annular channel corresponds to a core area, a transition area and an outer area of the cable section.
6. The method of manufacturing a cable of carbon fiber tendon according to claim 5, wherein the primary sizing die in step S3 has a die hole diameter 1-4mm larger than the target cable diameter, and the ratio of the die hole length to the die hole diameter is in the range of 1-2.
7. The method according to claim 6, wherein the number P of the compaction dies connected in series in step S4 is 3≤p≤5, the cavity diameter satisfies D 1 >D 2 >...>D P , and D P is equal to the target diameter.
8. A method of manufacturing a cable for carbon fiber bundles according to claim 7, wherein the partial compaction structure in step S4 applies 10% -30% higher partial compaction pressure to a specific partial area than to other partial areas.
9. The method for manufacturing a cable of carbon fiber reinforced plastic bundles according to claim 8, wherein the curing process in step S5 is a heat curing process at a curing temperature ranging from 120 to 150 ℃ for a curing time ranging from 60 to 150 minutes.

Description

Manufacturing method of cable with carbon fiber tendons Technical Field The invention relates to a cable manufacturing method of a carbon fiber tendon. Background The carbon fiber mooring rope has excellent performances of high specific strength, corrosion resistance and the like, and is widely applied to important projects such as ocean engineering floating structures, cross-sea bridges, deep sea mooring and the like as a key bearing member. The cable is generally formed by integrating tens to hundreds of carbon fiber ribs or fiber bundles, and then is subjected to resin infiltration, compaction sizing and curing processes to form an integral stress structure. The existing carbon fiber cable forming technology mainly expands around an external manufacturing process, for example, tension adjustment of single-bundle fibers is realized through an independent tensioner, however, the existing method still has obvious limitations that firstly stress coordination among tendons is realized mainly by external tension control, the problem of forming uniformity cannot be solved from a layer system of section structural parameters such as dislocation among bundles, path difference, zonal compactness and the like, secondly, in the continuous forming process, due to the difference of path length, guiding friction and resin flow resistance of each tendon, internal actual tension distribution is uneven, and hidden structural defects such as discrete section compactness, inconsistent tendon stress and the like exist after forming, so that the integral mechanical property and long-term service reliability of the cable are seriously affected. Aiming at the problems of uneven tendon stress, discrete cross-section structure and the like caused by the lack of structural parameters and insufficient cooperation of the forming process in the existing carbon fiber mooring cable forming technology, a novel cluster forming method capable of starting with the cooperation of internal structural design and forming control is needed to be provided. Disclosure of Invention The invention aims to solve the defects in the prior art, and provides a cable manufacturing method of a carbon fiber tendon, which realizes high molding precision and high section compactness, enhances the overall mechanical property, fatigue life and long-term service reliability of a carbon fiber mooring cable, and the aim of the invention is achieved as follows: S1, setting structural parameters of the carbon fiber tendons according to the mechanical property requirement and the section specification of a target cable, wherein the structural parameters comprise the number M of sections, the number N of carbon fiber tendons in each section, the target dislocation angle theta between layers and the target compactness rho of each section, and distributing N carbon fiber tendons into M groups according to the initial physical state of the N carbon fiber tendons, wherein each group corresponds to a specific section in a section; the method comprises the steps of S2, respectively guiding each subarea carbon fiber tendon through M independent guide channels, wherein the geometric configuration and the surface characteristics of each guide channel are independently configured according to the target structural parameters of the corresponding subarea, S3, carrying out preliminary normalization on the outer contour of the carbon fiber tendon by adopting a preliminary sizing die with low constraint, S4, enabling the preliminary normalized carbon fiber tendon to sequentially pass through compaction sizing dies connected in series, wherein the compaction sizing dies have progressively reduced die cavity aperture and progressively increased pressure application level, the die cavity of at least one compaction sizing die in the middle stage is internally provided with a subarea compaction structure corresponding to the subarea so as to apply larger local compaction pressure to the specific subarea compared with other subareas, and S5, enabling the compaction sizing dies to enter a curing furnace for curing so as to obtain the cable meeting the mechanical property requirements and the section specification. Further, in the step S1, the value range of the number M of the section partitions is 2-5, and the value range of the target compactness rho of each partition is 60-75%. Further, in step S1, the distribution of the N carbon fiber tendons into M groups according to the initial physical state thereof specifically includes performing online tension monitoring and diameter measurement on the carbon fiber tendons, and distributing tendons with similar performances to the same partition according to the measurement result. Further, the geometry of the guide channel in the step S2 comprises an inlet guide angle alpha, the value range is more than or equal to 5 degrees and less than or equal to 20 degrees, the surface characteristic comprises a friction coefficient mu of the inner wall