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CN-121976353-A - Polypropylene cable and manufacturing method thereof

CN121976353ACN 121976353 ACN121976353 ACN 121976353ACN-121976353-A

Abstract

The invention discloses a polypropylene cable and a manufacturing method thereof, which mainly relate to the technical field of manufacturing of marine mooring ropes, and comprise a polypropylene cable rope body obtained by weaving prefabricated strands according to a 12-strand large-pitch structure, wherein the prefabricated strands are formed by winding and weaving polypropylene industrial filaments, and the polypropylene cable rope body is coated with a coating, the large-pitch is that the pitch/diameter ratio is more than 8 times, the polypropylene industrial filaments comprise the following raw materials, by weight, 95-105 parts of polypropylene slices, 4-6 parts of solid organic silicon, 4-6 parts of UV-resistant particles, 1-3 parts of color master batch and 0.1-0.5 part of antioxidant.

Inventors

  • SONG BINGTAO
  • CHEN FANGZHEN
  • QIU YANPING
  • WANG SHUQING
  • SUN PENGCHENG
  • LIU GUIBIN
  • SHAN LITIAN

Assignees

  • 山东鲁普科技有限公司

Dates

Publication Date
20260505
Application Date
20260224

Claims (10)

  1. 1. The polypropylene cable is characterized by comprising a polypropylene cable body which is obtained by weaving prefabricated strands according to a 12-strand large-pitch structure, wherein the prefabricated strands are formed by winding and weaving industrial polypropylene filaments, and a coating is coated on the polypropylene cable body; Wherein, the large pitch refers to the ratio of pitch to diameter being more than 8 times; The polypropylene industrial filament comprises, by weight, 95-105 parts of polypropylene slices, 4-6 parts of solid organic silicon, 4-6 parts of UV-resistant particles, 1-3 parts of color master batches and 0.1-0.5 part of antioxidants; The coating comprises the following raw materials, by weight, 95-105 parts of water, 35-45 parts of polyethylene-containing waterborne polyurethane, 5-10 parts of liquid organic silicon, 5-10 parts of liquid UV-resistant agent, 1.0-1.5 parts of penetrating agent and 2-5 parts of waterborne color paste.
  2. 2. A polypropylene cable according to claim 1, wherein the large pitch is a pitch/diameter ratio of 8-12.
  3. 3. The polypropylene cable according to claim 1, wherein the polypropylene industrial filaments comprise the following raw materials, by weight, 100 parts of polypropylene chips, 5 parts of solid organic silicon, 5 parts of UV-resistant particles, 2 parts of color master batches and 0.3 part of antioxidants.
  4. 4. The polypropylene cable according to claim 1, wherein the coating comprises the following raw materials, by weight, 100 parts of water, 35 parts of polyethylene-containing aqueous polyurethane, 5 parts of liquid organic silicon, 5 parts of liquid anti-UV agent, 1 part of penetrating agent and 2 parts of aqueous color paste.
  5. 5. A method of making a polypropylene cable according to any one of claims 1 to 4, comprising the steps of: s1, wire drawing modification, namely selecting high-quality polypropylene slices, adding solid organic silicon, UV-resistant particles, color master batch and penetrating agent, and performing high-temperature melting wire drawing by a host machine to obtain polypropylene industrial filaments; S2, rope braiding, wherein the polypropylene industrial filaments obtained in the step S1 are wound and braided to obtain prefabricated strands, and the prefabricated strands are braided through a braiding machine according to a 12-strand large-pitch structure to obtain a polypropylene cable rope body; s3, coating after-finishing, namely soaking the polypropylene cable rope body obtained in the step S2 in a coating, and then carrying out coating after-finishing by coating equipment to obtain a coating finished cable; s4, airing, namely drying or naturally airing the coating finishing cable obtained in the step S3 to obtain the polypropylene cable.
  6. 6. The method of manufacturing a polypropylene cable according to claim 5, wherein step S1 comprises the steps of: s11, preparing and drying raw materials, namely selecting polypropylene slices with a melt flow rate of 2-5g/10min, adding solid organic silicon and UV-resistant particles into the polypropylene slices, and adding color master batch and antioxidant according to requirements; S12, melt spinning, namely heating and melting the dried raw materials through a screw extruder, extruding the melt through a spinneret plate to form nascent fibers, and then rapidly cooling and solidifying through a cooling air ring; s13, stretching and shaping, namely introducing the nascent fiber into a stretcher through a godet, and stretching the nascent fiber 2-5 times at a temperature higher than the glass transition temperature; S14, winding and post-treatment winding forming, wherein the shaped filaments are wound into a cylinder at a constant speed through a winding machine, and a filament barrel is formed.
  7. 7. The method for manufacturing the polypropylene cable according to claim 6, wherein the water content of the raw material is controlled to be less than 0.05% in the step S11, the temperature of the screw extruder is controlled to be 220-230 ℃ in the step S12, the glass transition temperature is 80-120 ℃ in the step S13, the setting temperature is 120-160 ℃ in the step S14, and the winding speed is controlled to be 800-1200m/min.
  8. 8. The method of manufacturing a polypropylene cable according to claim 5, wherein step S2 comprises the steps of: s21, passing the industrial polypropylene filament obtained in the step S1 through twisting equipment to obtain S twist and Z twist rope yarns; s22, manufacturing rope yarns into rope strands through a strand manufacturing device, wherein the winding directions of the rope yarns are Z-twist and S-twist, and each twisting direction is 16 respectively; S23, weaving the prefabricated strands through a braiding machine according to a 12-strand large-pitch structure to obtain the polypropylene cable rope body.
  9. 9. The method for manufacturing the polypropylene cable according to claim 5, wherein the step S3 specifically comprises the steps of adding water, aqueous polyurethane containing polyethylene, liquid organic silicon, liquid anti-UV agent, penetrating agent and aqueous color paste into a glue pool, uniformly stirring, completely soaking the polypropylene cable rope body manufactured in the step S2 into the glue pool, and finishing coating of the polypropylene cable through coating equipment.
  10. 10. The method of claim 5, wherein in step S4, the polypropylene cable is dried to a water content of not more than 13%.

Description

Polypropylene cable and manufacturing method thereof Technical Field The invention relates to the technical field of manufacturing of mooring ropes for ships, in particular to a polypropylene cable and a manufacturing method thereof. Background When the ship mooring cable is used as a ship berthing dock, a ship offshore platform is moored or a mooring operation is carried out, the mechanical property and reliability of the core bearing component for connecting the ship body and the fixed facility directly determine the safety bottom line of the ship mooring operation, and the ship mooring cable is key equipment for guaranteeing the ship berthing stability. However, there are two major technical pain points associated with prior art marine mooring lines: Firstly, in order to meet the high-load mooring requirements of large ships and oversized ships, the mooring ropes are required to be made of high-strength fiber materials and have a large-specification structural design, so that the overall dead weight of the mooring ropes is overlarge, and the significant operation burden is brought to the installation, replacement and daily safety inspection of workers, so that the operation efficiency is reduced, and the labor intensity and the operation risk of the crews are increased; Secondly, the mooring cable is required to continuously bear multi-factor coupling erosion because of long-term service in ocean extreme environments, namely, on one hand, complex mechanical abrasion action is faced, including dynamic friction abrasion among yarns in the cable, contact abrasion between the cable and a dock fender/hull structure/submarine reef, and internal and external fatigue abrasion generated by bending and torsion of the cable in the mooring operation process, and on the other hand, aging degradation of cable materials is caused by environmental factors such as ocean high salt fog, strong ultraviolet radiation, extreme temperature change and the like, so that the mechanical property of the mooring cable is attenuated, and the service life and the safety and reliability of the mooring cable are seriously influenced. The technical pain points restrict the performance upgrading and industry development of the marine mooring rope for a long time, and a targeted technical solution is needed to be continuously provided. Disclosure of Invention The invention aims to solve the problems in the prior art, and provides a polypropylene cable and a manufacturing method thereof, wherein the problems of wear resistance and weather resistance of the traditional polypropylene cable are changed, so that the traditional material cable is replaced by the improved polypropylene cable, the polypropylene cable is suitable for the application scene of a ship mooring cable, and the problems of overlarge dead weight of the ship cable, influence on the operation efficiency and increase of the operation labor intensity are solved. The invention aims to achieve the aim, and the aim is achieved by the following technical scheme: A polypropylene cable, comprising a polypropylene cable rope body obtained by braiding prefabricated strands according to a 12-strand large-pitch structure, wherein the prefabricated strands are formed by winding and braiding industrial polypropylene filaments, and the polypropylene cable rope body is coated with a coating; Wherein, the large pitch refers to the ratio of pitch to diameter being more than 8 times; The polypropylene industrial filament comprises, by weight, 95-105 parts of polypropylene slices, 4-6 parts of solid organic silicon, 4-6 parts of UV-resistant particles, 1-3 parts of color master batches and 0.1-0.5 part of antioxidants; The coating comprises the following raw materials, by weight, 95-105 parts of water, 35-45 parts of polyethylene-containing waterborne polyurethane, 5-10 parts of liquid organic silicon, 5-10 parts of liquid UV-resistant agent, 1.0-1.5 parts of penetrating agent and 2-5 parts of waterborne color paste. Preferably, the large pitch refers to a pitch/diameter ratio of 8-12. Preferably, the polypropylene industrial filament comprises the following raw materials, by weight, 100 parts of polypropylene slices, 5 parts of solid organic silicon, 5 parts of UV-resistant particles, 2 parts of color master batches and 0.3 part of antioxidants. Preferably, the coating comprises the following raw materials, by weight, 100 parts of water, 35 parts of polyethylene-containing waterborne polyurethane, 5 parts of liquid organic silicon, 5 parts of liquid anti-UV agent, 1 part of penetrating agent and 2 parts of waterborne color paste. A manufacturing method of a polypropylene cable comprises the following steps: s1, wire drawing modification, namely selecting high-quality polypropylene slices, adding solid organic silicon, UV-resistant particles, color master batch and penetrating agent, and carrying out high-temperature melting wire drawing by a host machine to obtain polypropylene industrial fila