WO2021124687A1 - Tissu et revêtement de câble pour bras de robot - Google Patents

Tissu et revêtement de câble pour bras de robot Download PDF

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Publication number
WO2021124687A1
WO2021124687A1 PCT/JP2020/040195 JP2020040195W WO2021124687A1 WO 2021124687 A1 WO2021124687 A1 WO 2021124687A1 JP 2020040195 W JP2020040195 W JP 2020040195W WO 2021124687 A1 WO2021124687 A1 WO 2021124687A1
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WIPO (PCT)
Prior art keywords
fiber
woven fabric
yarn
fluororesin
fibers
Prior art date
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PCT/JP2020/040195
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English (en)
Japanese (ja)
Inventor
関山雅人
二ノ宮有希
原田大
Original Assignee
東レ株式会社
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Filing date
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Application filed by 東レ株式会社 filed Critical 東レ株式会社
Priority to JP2020571575A priority Critical patent/JPWO2021124687A1/ja
Priority to CN202080085191.XA priority patent/CN114829689B/zh
Priority to EP20901092.5A priority patent/EP4079470A4/fr
Priority to US17/783,299 priority patent/US20230027891A1/en
Priority to MX2022007319A priority patent/MX2022007319A/es
Publication of WO2021124687A1 publication Critical patent/WO2021124687A1/fr

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/208—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based
    • D03D15/225—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based artificial, e.g. viscose
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/47—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads multicomponent, e.g. blended yarns or threads
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/04—Blended or other yarns or threads containing components made from different materials
    • D02G3/045—Blended or other yarns or threads containing components made from different materials all components being made from artificial or synthetic material
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D03D13/004—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft with weave pattern being non-standard or providing special effects
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D03D13/008—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft characterised by weave density or surface weight
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/292—Conjugate, i.e. bi- or multicomponent, fibres or filaments
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/41—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific twist
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/513—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads heat-resistant or fireproof
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/56—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads elastic
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/573—Tensile strength
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/58—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads characterised by the coefficients of friction
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/04—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of halogenated hydrocarbons
    • D10B2321/042—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of halogenated hydrocarbons polymers of fluorinated hydrocarbons, e.g. polytetrafluoroethene [PTFE]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
    • D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/14—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensates of cyclic compounds, e.g. polyimides, polybenzimidazoles
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/061—Load-responsive characteristics elastic
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/063—Load-responsive characteristics high strength

Definitions

  • the present invention relates to a woven fabric having abrasion resistance and a cable cover for a robot arm.
  • sliding fabrics with improved friction durability have been developed by taking advantage of the low coefficient of friction of fluororesin and arranging fluororesin into fibers and arranging them as woven knits or non-woven fabrics on the surface of sliding members. Further, since the fluororesin fiber generally has a low strength, a technique for improving the sliding durability by interweaving a fiber having a higher strength than the fluororesin fiber and the fluororesin fiber is disclosed.
  • a double woven fabric in which fluororesin fibers are arranged on a sliding surface and fibers other than fluororesin fibers are arranged on a non-sliding surface, or a composite yarn formed of fluororesin fibers and fibers other than fluororesin fibers.
  • Patent Document 1 describes a multi-woven fabric composed of a sliding woven fabric containing fluororesin fibers and a base woven fabric, and has high heat resistance and abrasion resistance by adopting an optimum base surface configuration, and is in a high temperature environment.
  • a heat-resistant and wear-resistant multilayer fabric that can exhibit long-term slidability even when exposed to the bottom is disclosed.
  • the PTFE that is worn away by sliding is received at the entangled joint point (joint point due to entanglement) between the sliding woven fabric and the base woven fabric and the sliding surface side of the base woven fabric, and a part of the PTFE is entangled at the entangled joint point and the sliding woven fabric side of the base fabric.
  • the excess PTFE accumulates on the uneven portion of the base fabric, and even if the entire multiple fabric is worn out, the PTFE accumulated on the uneven portion of the base fabric continues to coat the surface of the base fabric. Therefore, the surface of the fabric is continuously PTFE-coated, and the effect of maintaining the slidability for a long period of time is shown.
  • Patent Document 2 describes a woven fabric containing a composite yarn formed from a fluororesin fiber and another fiber, and the ratio of the surface area of the other fiber on one side of the woven fabric to the total surface surface of the composite yarn is 0 to 30%.
  • a self-lubricating fabric is disclosed.
  • the woven fabric described in Patent Document 1 is a double woven fabric in which PTFE fibers and other fibers are separately arranged in a sliding woven fabric layer and a base woven fabric layer, respectively. Therefore, there is a problem that the fluororesin fibers are easily discharged when exposed to high-speed sliding under a high load, and long-term sliding durability cannot be sufficiently obtained.
  • the self-lubricating woven fabric described in Patent Document 2 is a composite yarn composed of fluororesin fibers and other fibers, fluorine wear powder is easily transferred to other fibers adjacent to the fluororesin fibers, and under a high load.
  • the sliding durability was improved.
  • the ratio of fluororesin fibers in the composite yarn was made excessively larger than that of other fibers. Therefore, when exposed to high-speed sliding under a high load, fluororesin fibers are still present. It was not possible to sufficiently suppress the discharge of abrasion powder of the resin thread, and there was room for improvement in long-term sliding durability.
  • the present invention has the following configuration in order to solve such a problem.
  • the woven fabric in which a composite yarn is used for either the warp or the weft, and fiber B is used for either the weft or the warp that is orthogonal to the composite yarn.
  • the woven fabric having an area ratio X of 10% or more and 60% or less.
  • the woven fabric in which the composite yarn is a twisted yarn obtained by twisting a fluororesin fiber A and a fiber B other than the fluororesin fiber.
  • the woven fabric in which the fibers B constituting the combined twisted yarn are twisted yarns are twisted yarns.
  • the woven fabric in which the fluororesin fiber A is made of a polytetrafluoroethylene resin is made of a polytetrafluoroethylene resin.
  • the woven fabric in which the fiber B is an organic fiber is an organic fiber.
  • the woven fabric in which the fiber B is a fiber selected from a liquid crystal polyester fiber, a para-type aramid fiber, and a polyparaphenylene benzobisoxazole fiber.
  • Cable cover for robot arm that uses the above woven fabric for at least a part.
  • a woven fabric that has low frictional properties and can exhibit slidability for a long period of time even when subjected to high-speed frictional force under a high load.
  • the woven fabric according to the present invention is a woven fabric in which a composite yarn of a fluororesin fiber A and a fiber B other than the fluororesin fiber is used for at least one of a warp and a weft, and the mass ratio ⁇ of the fluororesin fiber A to the composite yarn is ⁇ . Is 5 to 70%, and the ratio of the area ratio X of the fluororesin fibers A to the surface of the woven fabric and the mass ratio Y of the fluororesin fibers A in the woven fabric is 1 or more and 5 or less.
  • the fluororesin fiber and the fiber B are adjacent to each other in the woven fabric, and the fluororesin fiber A is worn and generated due to sliding. Since the fluoropolymer wear powder is easily transferred to the fibers B and forms a self-lubricating film, excellent wear durability under a high load can be obtained. Furthermore, for high-speed sliding under high load, by optimizing the mass ratio of fluororesin fibers in the composite yarn, the area ratio of fluororesin fibers, and the mass ratio of fluororesin fibers in the fabric, respectively. Fibers other than fluororesin fibers support the woven fabric as skeleton fibers, and even when a high-speed frictional force is applied under a high load, slidability can be exhibited for a long period of time.
  • the woven fabric of the present invention uses a composite yarn of a fluororesin fiber A and a fiber B other than the fluororesin fiber for at least one of the warp and the weft. More preferably, a composite yarn is used for either the warp or the weft, and the fiber B is used for either the weft or the warp that is orthogonal to the composite yarn. With such a configuration, it is possible to more easily obtain a woven fabric having X / Y as an appropriate value, which will be described later. Further, it is particularly preferable that the warp yarn is a composite yarn and the weft yarn is a fiber B. In general, the crimp of the weaving yarn is large in the warp yarn and small in the weft yarn.
  • the composite yarn containing the fluororesin fiber A is easily exposed on the surface of the fabric, and the fiber B is arranged linearly in the woven fabric. Therefore, the strength utilization efficiency of the fiber B is improved.
  • the fiber B for the warp yarn and the composite yarn for the weft yarn.
  • the weft or the warp perpendicular to the composite yarn is preferably a fiber of the same type as the fiber B.
  • the same type of fiber as used herein means a fiber made of the same polymer, and the number of filaments and the fineness do not have to be the same.
  • the same polymer referred to here may be used as long as the polymers constituting the fibers are substantially the same, and the presence or absence and type of additives to be added may be different. Further, substantially the same does not have to be exactly the same, and the main repeating units are common, and in the obtained woven fabric, wrinkles, which will be described later, and the anisotropic property of sliding durability are not significantly impaired. If so, it may be a combination of a homopolymer and a copolymer polymer, or a copolymer polymer and another copolymer polymer.
  • the mass ratio ⁇ of the fluororesin fiber A in the composite yarn is 5 to 70%.
  • the mass ratio ⁇ of the fluororesin fiber A in the composite yarn is more preferably 25 to 60%, and particularly preferably 40 to 55% from the viewpoint of the balance between strength and slidability. If the mass ratio ⁇ of the fluororesin fiber A in the composite yarn is less than 5%, the low friction property is significantly impaired. If it is more than 70%, the fluororesin fibers are severely broken and the fluororesin wear powder is discharged significantly, and the desired durability cannot be obtained.
  • the means for obtaining the composite yarn from the fluororesin fiber A and the fiber B is not particularly limited, and can be selected from means such as blended twist, mixed fiber, and mixed spinning. It is preferable to use the combined twist and the mixed fiber because the filament yarn can be selected as the fluororesin fiber A and the fiber B and the strength of the composite yarn is increased.
  • the mixed fiber the fluororesin fiber A single yarn and the fiber B single yarn constituting the composite yarn can be more uniformly composited, so that a uniform composite yarn can be obtained in the cross-sectional direction.
  • the combined twist is used, the composite yarn can be obtained without giving entanglement, so that the composite yarn uniform in the longitudinal direction can be obtained.
  • the number of twists at the time of combined twisting preferably has a twist coefficient k of 1000 or more and 25000 or less.
  • the twist coefficient k is obtained by the following equation with the number of twists per 1 m as T [t / m] and the fineness D [dtex] of the composite yarn.
  • k T ⁇ D 0.5 More preferably, it is 1000 or more and 10000 or less, and 2000 or more and 7000 or less is particularly preferable.
  • the fiber B before the combined twist is twisted.
  • the twist coefficient of the fiber B before the combined twist is preferably 500 or more and 5000 or less.
  • the strength of the fiber B is improved by the twisted yarn, and the fiber B is more strongly present as a skeleton fiber when it is made into a woven fabric, so that the sliding durability is improved. To do. Particularly preferably, it is 900 or more and 3000 or less.
  • the twist coefficient of the fiber B is larger than 5000, the strength may be lower than that before the twisting.
  • a step of simply twisting the raw yarn having a desired fineness may be adopted, or a step of twisting yarns having a fineness smaller than the desired fineness may be adopted.
  • the fiber B raw yarn having a fineness of 850 [dtex] may be twisted at 33 [t / m].
  • Two fiber B yarns having a fineness of 425 [dtex] may be twisted together at 33 [t / m].
  • the ratio X / Y of the area ratio X of the fluororesin fiber A to the surface of the woven fabric and the mass ratio Y of the fluororesin fiber A in the woven fabric is 1 or more and 5 or less.
  • the area ratio of the fluorine-containing resin fibers A occupied in the textile surface referred when the surface of the fabric taken by a microscope, means the ratio of the area S A occupied by the fluorine-containing resin fibers A occupied in imaging area S tot, It is calculated by the following formula.
  • Fluororesin fiber A of an area rate X S A / S tot ⁇ 100 [%]
  • X / Y represents the degree to which the fluororesin fibers A present in the woven fabric are distributed on the surface of the woven fabric, and the larger the X / Y, the more the fluororesin fibers are concentrated on the surface of the woven fabric.
  • X / Y is more preferably 1 to 1. It is 2, and more preferably 1.2 to 1.65.
  • the fluororesin fiber A existing on the woven fabric surface increases. Is excessively large, so when exposed to high-speed sliding under high load, the frictional resistance force can be reduced at the initial stage of sliding, but the fluororesin fibers are worn and the fluoropolymer wear powder generated is discharged at an early stage. Since the fluororesin fibers remaining in the woven fabric are depleted, the frictional resistance to the fabric strength becomes relatively high in the middle to late sliding stages, and sufficient wear durability cannot be obtained.
  • the area ratio X of the fluororesin fiber A occupying the surface of the woven fabric is preferably 10% or more and 60% or less.
  • the area ratio X of the fluororesin fiber A occupying the surface of the woven fabric is 10% or more, the frictional resistance force at the initial stage of sliding can be reduced to a certain extent and the abrasion durability can be ensured.
  • the area ratio X of the fluororesin fiber A occupying the surface of the woven fabric is 60% or less, fibers other than the fluororesin fiber can be present as skeleton fibers in the woven fabric to a certain extent, so that wear durability can be ensured. From the viewpoint of reducing the frictional resistance at the initial stage of sliding and arranging the skeletal fibers on the fabric, it is more preferably 20% or more and 55% or less, and 40% or more and 55% or less can be mentioned as particularly preferable conditions.
  • the mass ratio Y of the fluororesin fibers in the woven fabric is preferably 5% or more and 55% or less. More preferably, it is 15% or more and 55% or less, and 25% or more and 45% or less can be mentioned as a particularly preferable condition.
  • X / Y it is preferable to arrange more fluororesin fibers on the surface of the woven fabric. That is, in order to set X / Y in the above range, a large amount of fluororesin fibers are arranged near the surface layer of the composite yarn when the composite yarn is formed, or a large amount of fluororesin fibers are exposed on the surface of the woven fabric by controlling the weaving structure or the like. You may try to do it.
  • the means for obtaining the composite yarn is not particularly limited, but in order to arrange a large amount of fluororesin fibers in the vicinity of the surface layer of the composite yarn when forming the composite yarn, a special twisting process is particularly adopted and the composite yarn is twisted. It can be carried out relatively easily by controlling the conditions. Specifically, a method of covering the fluororesin fiber A with the fiber B, a method of twisting the fluororesin fiber A again with the combined twisted yarn of the fiber B and the fluororesin fiber A, and applying a high tension to the fiber B at the time of the twisting. , A method of arranging the fluororesin fiber A on the sheath side in the composite yarn or the like can be adopted.
  • the volume ratio and the area ratio of the fluororesin fiber A in the composite yarn are substantially the same.
  • Increasing the area ratio of the fluororesin fibers in the composite yarn also increases the mass ratio Y of the fluororesin fibers A in the woven fabric. Therefore, in order to control X / Y in the range of 1 or more and 5 or less, the weaving structure is controlled. It is usual to use another means of.
  • the woven structure is not particularly limited in the present invention, but as a means for controlling the woven structure so that a large amount of fluororesin fibers are exposed on the surface of the woven fabric, a 3/1 twill structure or a 2/1 twill structure can be used. A method of changing the exposure ratio of the warp and the weft on the surface by adopting a satin structure or the like can be mentioned.
  • the X / Y can be controlled in the range of 1 or more and 5 or less by arranging the yarn containing a large amount of the fluororesin fiber A on the warp or the weft that is exposed more on the surface.
  • the fluororesin which is a component of the fluororesin fiber may be one composed of a monomer unit containing one or more fluorine atoms in the main chain or the side chain. Among them, those composed of monomer units having a large number of fluorine atoms are preferable.
  • the monomer unit containing one or more fluorine atoms preferably contains 70 mol% or more, more preferably 90 mol% or more, and further preferably 95 mol% or more of the repeating structural unit of the polymer. ..
  • Examples of the monomer containing one or more fluorine atoms include fluorine atom-containing vinyl-based monomers such as tetrafluoroethylene, hexafluoropropylene, and chlorotrifluoroethylene, and it is preferable to use at least tetrafluoroethylene.
  • fluororesin examples include polytetrafluoroethylene (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), tetrafluoroethylene-p-fluoroalkyl vinyl ether copolymer (PFA), and polychlorotrifluoroethylene.
  • PTFE polytetrafluoroethylene
  • FEP tetrafluoroethylene-hexafluoropropylene copolymer
  • PFA tetrafluoroethylene-p-fluoroalkyl vinyl ether copolymer
  • PCTFE polychlorotrifluoroethylene
  • EFE ethylene-tetrafluoroethylene copolymer
  • ETFE ethylene-tetrafluoroethylene copolymer
  • the content of tetrafluoroethylene units is large from the viewpoint of sliding characteristics, and a copolymer in which 90 mol% or more, preferably 95 mol% or more of the total is tetrafluoroethylene. It is most preferable to use polytetrafluoroethylene fiber as a homopolymer of tetrafluoroethylene.
  • the form of the fluororesin fiber A used in the present invention either a monofilament composed of one filament or a multifilament composed of a plurality of filaments can be used. From the viewpoint of surface unevenness, multifilament is preferable.
  • the total fineness of the fluororesin fiber A used in the present invention is preferably in the range of 50 to 6000 dtex. It is more preferably in the range of 500 to 5500 dtex, and even more preferably in the range of 400 to 1500 dtex.
  • the total fineness of the fibers constituting the fabric is 50 dtex or more, the strength of the fibers can be ensured to a certain extent, and the yarn breakage during weaving can be reduced, so that the process passability is improved. If it is 6000 dtex or less, good workability at the time of weaving can be obtained.
  • the fiber B examples include cotton, polyester fiber, polyamide fiber, polyparaphenylene terephthalamide (para-type aramid) fiber, polymetaphenylene isophthalamide (meta-type aramid) fiber, polyphenylene sulfide (PPS) fiber, and polyparaphenylene benzobisoxazole.
  • Organic fibers such as (PBO) fiber, ultrahigh molecular weight polyethylene (UHMWPE) fiber, liquid crystal polyester fiber, and inorganic fiber such as glass fiber, carbon fiber, and silicon carbide fiber can be used, but from the viewpoint of processability, they are organic. It is preferably a fiber.
  • the fiber B is preferably a fiber having a tensile strength of 7 cN / dtex or more.
  • the tensile strength of the fiber B is more preferably 15 to 50 cN / dtex, and further preferably the tensile strength is 18 to 50 cN / dtex.
  • the fiber B is preferably a fiber having a heat resistant temperature of 280 ° C. or higher.
  • the heat-resistant temperature as used herein means that the melting point, softening point, and decomposition point are above that temperature.
  • the fiber B has two or more points of melting point, softening point and decomposition point, the point indicating the lower temperature shall be adopted.
  • the heat resistant temperature of the fiber is more preferably 300 ° C. or higher, and further, since the fiber does not have a melting point, softening due to frictional heat can be suppressed and excellent wear durability can be obtained.
  • the fiber B is preferably a fiber having a tensile elastic modulus of 20 to 800 cN / dtex. Further, when the tensile elastic modulus of the fiber B is in the range of 450 to 800 cN / dtex, the fabric structure can be maintained even when high-speed sliding is applied under a high load, and particularly excellent wear durability is obtained. be able to. When the tensile elastic modulus of the fiber B is 20 cN / dtex or more, the dimensional stability of the fabric is improved, and a fabric having excellent wear durability can be obtained.
  • the elongation of the fiber B is preferably 1 to 15%, more preferably 1 to 5%. Above all, if it is 1 to 3%, the dimensional change of the fabric can be reduced when a frictional force is applied, and thus it can be mentioned as a particularly preferable condition.
  • the elongation of the fiber B is 1% or more, the yarn breakage during weaving can be reduced, so that the process passability is improved. If it is within the range of 1 to 15%, the dimensional stability of the fabric is improved, and it can be applied to a portion where dimensional accuracy is required as a sliding fabric.
  • the fiber B is a fiber selected from a liquid crystal polyester fiber, a para-type aramid fiber and a polyparaphenylene benzobisoxazole fiber.
  • the form of the fiber B is not particularly limited, and either a filament (long fiber) or a span (spun yarn) may be adopted, but the filament is preferable from the viewpoint of tensile strength and tensile rigidity. Further, either a monofilament composed of one filament or a multifilament composed of a plurality of filaments can be used, but since the surface area of the multifilament is large, the fluororesin fiber A is worn out. It is particularly preferable because the fluorowear powder is easily transferred to the fiber B.
  • the total fineness of the fiber B is preferably in the range of 200 to 4000 dtex. It is more preferably in the range of 4000 to 4000 dtex, and further in the range of 800 to 2000 dtex.
  • the strength of the fibers is strong, the fiber breakage at the time of abrasion can be suppressed, and the thread breakage at the time of weaving can be reduced, so that the process passability is improved. If it is 4000 dtex or less, the unevenness on the surface of the fabric is small, and the influence on the low friction property can be suppressed.
  • thermosetting resin includes, for example, phenol resin, melamine resin, urea resin, unsaturated polyester resin, epoxy resin, polyurethane resin, diallyl phthalate resin, silicon resin, polyimide resin, and vinyl ester.
  • thermoplastic resin such as a resin or its modified resin, vinyl chloride resin, polystyrene resin, ABS resin, polyethylene resin, polypropylene resin, fluororesin, polyamide resin, polyacetal resin, polycarbonate resin, polyester resin, etc.
  • a synthetic rubber such as polyurethane, butadiene rubber, nitrile rubber, neoprene, and polyester elastomer, or an elastomer can be preferably used.
  • thermosetting resin and the thermoplastic resin may contain various additives that are usually used industrially for the purpose, application, productivity in the manufacturing process and the processing process, or for improving the characteristics.
  • a denaturing agent, a plasticizer, a filler, a mold release agent, a coloring agent, a diluent and the like can be contained.
  • the main component referred to here is the component having the largest mass ratio among the components excluding the solvent, and in the case of a resin containing phenol resin and polyvinyl butyral resin as main components, these two types of resins are used. It means that the mass ratio is the first and second (in no particular order).
  • thermosetting resin As a method of impregnating the woven fabric with resin, when a thermosetting resin is used, the thermosetting resin is dissolved in a solvent to prepare a varnish, and knife coating, roll coating, comma coating, and gravure coating are performed. A method of impregnating and coating a cloth with a cloth is generally used. When a thermoplastic resin is used, melt-extruded laminate or the like is generally used.
  • a lubricant or the like is added to the woven fabric of the present invention as needed.
  • the type of lubricant is not particularly limited, but a silicon-based lubricant or a fluorine-based lubricant is preferable.
  • the woven fabric of the present invention is a twisted yarn woven fabric in which the composition of the fluororesin fiber A and the fiber B other than the fluororesin fiber is optimized, even when high-speed sliding is applied under a high load.
  • Long-term sliding durability can be obtained by suppressing the discharge of fluorine wear powder and by further functioning the fiber B as a skeleton fiber that supports the fluororesin fiber A. Therefore, the woven fabric of the present invention can exhibit high sliding durability in applications where it has been difficult to use it for a long period of time because it receives high-speed sliding under a high load, and is industrially extremely practical. Can be achieved. Therefore, it exhibits high durability for applications such as sliding fabrics that require slidability.
  • the cable cover for the robot arm using the woven fabric of the present invention for at least a part thereof has low friction and fabric strength, it is a long-term product even in a usage environment where it rubs against a part of the device at high speed under a high load. Indicates the life.
  • Fineness The woven fabric is decomposed, and JIS L1013: 2010 "Chemical fiber filament yarn test method", 8.3.
  • the fineness of the decomposed yarn was measured according to the B method (simple method). However, if the amount of yarn required for the above measurement method cannot be secured for the disassembled yarn, the result of the test with the maximum length that can be secured and the number of trials shall be used as a substitute.
  • Mass ratio ⁇ of fluororesin fiber A to the composite yarn After cutting the woven fabric into a length of 200 mm and a width of 200 mm, the warp and weft threads were disassembled to obtain disassembled threads. For each of the warp-decomposed yarn and the weft-decomposed yarn, five composite yarns were arbitrarily selected from the obtained decomposed yarns, decomposed into fluororesin fibers A and other fibers, and the masses of each were measured. Five mass sum of the composite yarn W, of five composite yarn mass sum of fluorocarbon resin fibers A as W F, and the weight ratio ⁇ of the fluorine-containing resin fibers A occupied in the composite yarn is calculated by the following equation ..
  • Mass ratio Y of fluororesin fiber A in the woven fabric After cutting the woven fabric into a length of 200 mm and a width of 200 mm, the warp and weft were decomposed, and the total mass W of the decomposed yarn was measured. Followinged by selecting only the composite yarn of the component yarns was measured on the total weight W 1 of the composite yarn in the fabric. Subsequently, the fluororesin fibers that existed alone in the woven fabric instead of the composite yarn were selected, and the total mass W 2 was measured. The mass ratio Y of the fluororesin fiber A in the woven fabric was calculated by the following formula.
  • the fabric is sampled to a length of 30 mm and a width of 30 mm, placed on a SUS plate of the same size and a thickness of about 3 mm, and fixed to the sample holder. did.
  • the mating material used was a hollow cylindrical ring made of S45C with an outer diameter of 25.6 mm, an inner diameter of 20 mm, and a length of 15 mm.
  • a roughness measuring device (“SJ-201” manufactured by Mitutoyo) was used for measuring the roughness.
  • the ring wear tester uses A & D's "MODEL: EFM-III-EN" and conducts tests at a friction load of 20 MPa and a friction speed of 400 mm / sec, measures the sliding torque, and until breakage.
  • Those with a dynamic friction coefficient less than 0.055 are A, those with a coefficient of 0.055 or more and 0.060 or less are B, those with a coefficient of greater than 0.060 and 0.065 or less are C, and those with a coefficient of dynamic friction greater than 0.065. It was set to D.
  • Example 1 PTFE fiber with total fineness of 880 dtex, 120 filaments of single yarn, 33 t / m twist (“Toyoflon” (registered trademark) manufactured by Toray Industries, Inc.) and liquid crystal polyester fiber with total fineness of 850 dtex, 144 filament of single yarn, 33 t / m twist. (“Ciberus” (registered trademark) manufactured by Toray Industries, Inc.) is twisted at a twist number of 167 t / m to obtain a composite yarn which is a twisted yarn.
  • a 3/1 twill woven fabric was produced by a weaving machine using a liquid crystal polyester fiber having a single yarn number of 288 filaments (manufactured by "Ciberus” (registered trademark) Toray Industries, Inc.). Then, smelting was performed in a smelting tank at 80 ° C., and heat was set at 180 ° C.
  • Example 2 A woven fabric was obtained in the same procedure as in Example 1 except that the composite yarn used in Example 1 was used for the warp and weft.
  • Comparative Example 1 A woven fabric was obtained in the same procedure as in Example 1 except that PTFE fiber (“Toyoflon” (registered trademark) manufactured by Toray Industries, Inc.) having a total fineness of 1760 dtex and a single yarn number of 240 filaments was used as the weft.
  • PTFE fiber “Toyoflon” (registered trademark) manufactured by Toray Industries, Inc.) having a total fineness of 1760 dtex and a single yarn number of 240 filaments was used as the weft.
  • Example 3 Liquid polyester fiber with a total fineness of 425 dtex and 72 filaments of single yarn (manufactured by "Ciberus” (registered trademark) Toray Industries, Inc.) and PTFE fiber of total fineness of 880 dtex and 120 filaments of single yarn ("Toyoflon” (registered trademark) Toray Industries, Inc.) (Manufactured) and then twisted to obtain a twisted yarn by twisting a liquid crystal polyester fiber having a total fineness of 425 dtex and a single yarn number of 72 filaments at a twist number of 167 t / m.
  • a 3/1 twill woven fabric was produced by a loom using the above-mentioned twisted yarn as the warp and a liquid crystal polyester fiber ("Sibelas" (registered trademark) manufactured by Toray Industries, Inc.) having a total fineness of 1700 dtex and a single yarn number of 288 filaments as the weft. Then, smelting was performed in a smelting tank at 80 ° C., and heat was set at 180 ° C.
  • Example 4 Liquid polyester fiber with a total fineness of 850 dtex and 144 filaments of single yarn ("Ciberus” (registered trademark) manufactured by Toray Industries, Inc.) and PTFE fiber with a total fineness of 440 dtex and 60 filaments of single yarn (“Toyoflon” (registered trademark) Toray Industries, Inc.) (Manufactured by) and then twisted with the twisted yarn at a total fineness of 440 dtex and a single yarn number of 60 filaments of PTFE fiber (“Toyoflon” (registered trademark) manufactured by Toray Industries, Inc.) at a twist number of 167 t / m. To obtain a twisted yarn.
  • a 3/1 twill woven fabric was produced by a loom using the above-mentioned twisted yarn as the warp and a liquid crystal polyester fiber ("Sibelas" (registered trademark) manufactured by Toray Industries, Inc.) having a total fineness of 1700 dtex and a single yarn number of 288 filaments as the weft. Then, smelting was performed in a smelting tank at 80 ° C., and heat was set at 180 ° C.
  • Example 5 A woven fabric was obtained in the same procedure as in Example 1 except that the number of twists of the fiber B before the combined twist was set to 0 t / m.
  • Example 6 PTFE fiber with total fineness of 440 dtex, 60 filaments of single yarn, 33 t / m twist (“Toyoflon” (registered trademark) manufactured by Toray Industries, Inc.) and liquid crystal polyester fiber with total fineness of 1275 dtex, 216 filament of single yarn, 33 t / m twist. (“Ciberus” (registered trademark) manufactured by Toray Industries, Inc.) is twisted at a twist rate of 167 t / m to obtain a twisted yarn, and then the warp yarn is the twisted yarn, the weft yarn is a total fineness of 1700 dtex, and the number of single yarns is 288 filaments.
  • a 3/1 twill woven fabric was produced using a woven polyester fiber (manufactured by Toray Industries, Inc., "Ciberus” (registered trademark)). Then, smelting was performed in a smelting tank at 80 ° C., and heat was set at 180 ° C.
  • Example 7 A woven fabric was obtained in the same procedure as in Example 6 except that the composite yarn used in Example 6 was used for the warp and weft.
  • Comparative Example 2 A woven fabric was obtained in the same procedure as in Example 6 except that the warp used in Example 6 was used as the weft and the weft used in Example 6 was used as the warp.
  • Example 8 PTFE fiber with total fineness of 880 dtex, 120 filaments of single yarn, 33 t / m twist (“Toyoflon” (registered trademark) manufactured by Toray Co., Ltd.) and polyparaphenylene with total fineness of 850 dtex, 144 filament of single yarn, 33 t / m twist.
  • a terephthalamide fiber (“Kevlar” (registered trademark) manufactured by Toray DuPont Co., Ltd.) is twisted at a twist rate of 167 t / m to obtain a twisted yarn, and then the warp yarn is the twisted yarn and the weft yarn is a total fineness of 1700 dtex.
  • Polyparaphenylene terephthalamide fiber (“Kevlar” (registered trademark) manufactured by Toray DuPont Co., Ltd.) with 288 filaments of single yarn was used to produce a 3/1 twill woven fabric with a weaving machine. Then, smelting was performed in a smelting tank at 80 ° C., and heat was set at 180 ° C.
  • Example 9 Polyethylene fiber with total fineness of 880 dtex, 120 filaments of single yarn, 33 t / m twist (“Toyoflon” (registered trademark) manufactured by Toray Co., Ltd.) and polyester fiber with total fineness of 850 dtex, 144 filament of single yarn, 33 t / m twist (“Toyoflon” (registered trademark)) "Tetron” (polyethylene terephthalate fiber manufactured by Toray Co., Ltd.) is twisted at a twist number of 167 t / m to obtain a twisted yarn, and then the warp yarn is the twisted yarn, the weft yarn is a polyester with a total fineness of 1700 dtex and a single yarn number of 288 filaments.
  • Toyoflon registered trademark
  • polyester fiber with total fineness of 850 dtex 144 filament of single yarn
  • 33 t / m twist (“Toyoflon” (registered trademark))
  • Tetron polyethylene tere
  • fibers polyethylene terephthalate fiber manufactured by "Tetron” Toray Co., Ltd.
  • a 3/1 twill fabric was produced by a weaving machine. Then, smelting was performed in a smelting tank at 80 ° C., and heat was set at 180 ° C.
  • Example 10 Polyphenylene sulfide fiber with total fineness of 880 dtex, 120 filaments of single yarn, 33 t / m twist (“Toyoflon” (registered trademark) manufactured by Toray Industries, Inc.) and 850 dtex of total fineness, 144 filament of single yarn, 33 t / m twist. (“Torcon” (registered trademark) manufactured by Toray Industries, Inc.) is twisted at a twist rate of 167 t / m to obtain a twisted yarn, and then the warp yarn is the twisted yarn, the weft yarn is a total fineness of 1700 dtex, and the number of single yarns is 288 filaments.
  • Polyphenylene sulfide fiber (“Torcon” (registered trademark) manufactured by Toray Industries, Inc.) was used to produce a 3/1 twill fabric with a weaving machine. Then, smelting was performed in a smelting tank at 80 ° C., and heat was set at 180 ° C.
  • Polyester fiber "Tetron” (registered trademark) with a total fineness of 440 dtex, 60 filaments of single yarn, 33 t / m twist of PTFE fiber ("Toyoflon” (registered trademark) manufactured by Toray Co., Ltd.) and 44 dtex of total fineness, 18 filaments of single yarn.
  • Polyethylene terephthalate fiber manufactured by Toray Co., Ltd. is twisted at a twist number of 210 t / m to obtain a twisted yarn, and then the warp yarn is the twisted yarn and the weft yarn is a polyester fiber having a total fineness of 26 s / 2 (454 dtex).
  • Comparative Example 4 PTFE fiber with total fineness of 2660 dtex, single yarn number of 360 filament, twist number of 33 t / m ("Toyoflon” (registered trademark) manufactured by Toray Industries, Inc.) and carbon fiber with total fineness of 1980 dtex, single yarn number of 3000 filament, twist number of 33 t / m ("Toyoflon” (registered trademark) manufactured by Toray Industries, Inc.) After twisting with "Treca” (registered trademark) manufactured by Toray Industries, Inc. at a twist rate of 167 t / m to obtain a twisted yarn, the twisted yarn is used for the warp and weft, and a 2/2 twill is used on a loom. Made a woven fabric. Then, smelting was performed in a smelting tank at 80 ° C., and heat was set at 180 ° C.
  • Tables 1 and 2 summarize the evaluation results of the composite yarn composition, the fabric composition, the dynamic friction coefficient, and the sliding durability distance for the woven fabrics described in Examples and Comparative Examples.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Woven Fabrics (AREA)

Abstract

Afin de fournir un tissu qui a de faibles propriétés de frottement et qui peut présenter une aptitude au glissement à long terme même après avoir reçu une force de frottement à grande vitesse sous une charge élevée, le présent tissu est caractérisé en ce qu'un fil composite de fibres de résine fluorée A et de fibres B autres que des fibres de résine fluorée est utilisé en tant qu'au moins un fil de chaîne ou un fil de trame, le rapport en masse α des fibres de résine fluorée A dans le fil composite est de 5 à 70 %, et le rapport de la proportion surfacique X des fibres de résine fluorée à la surface du tissu comparé au rapport massique Y des fibres de résine fluorée dans le tissu est d'au moins 1 et de pas plus de 5. Le présent tissu peut être utilisé utilement dans un revêtement de câble pour un bras de robot.
PCT/JP2020/040195 2019-12-20 2020-10-27 Tissu et revêtement de câble pour bras de robot WO2021124687A1 (fr)

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CN202080085191.XA CN114829689B (zh) 2019-12-20 2020-10-27 机织物及机械臂用电缆罩
EP20901092.5A EP4079470A4 (fr) 2019-12-20 2020-10-27 Tissu et revêtement de câble pour bras de robot
US17/783,299 US20230027891A1 (en) 2019-12-20 2020-10-27 Fabric, and cable cover for robot arm
MX2022007319A MX2022007319A (es) 2019-12-20 2020-10-27 Tela, y cubierta de cable para brazo robotico.

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CN114829689B (zh) 2023-06-16
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TW202124801A (zh) 2021-07-01
EP4079470A1 (fr) 2022-10-26

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