WO2012042576A1 - Câble électroconducteur - Google Patents

Câble électroconducteur Download PDF

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Publication number
WO2012042576A1
WO2012042576A1 PCT/JP2010/005908 JP2010005908W WO2012042576A1 WO 2012042576 A1 WO2012042576 A1 WO 2012042576A1 JP 2010005908 W JP2010005908 W JP 2010005908W WO 2012042576 A1 WO2012042576 A1 WO 2012042576A1
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WO
WIPO (PCT)
Prior art keywords
rope
conductive
fiber
twisted
yarn
Prior art date
Application number
PCT/JP2010/005908
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English (en)
Japanese (ja)
Inventor
明子 高木
Original Assignee
高木綱業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 高木綱業株式会社 filed Critical 高木綱業株式会社
Priority to PCT/JP2010/005908 priority Critical patent/WO2012042576A1/fr
Priority to JP2012536032A priority patent/JP5479606B2/ja
Publication of WO2012042576A1 publication Critical patent/WO2012042576A1/fr

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    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/147—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising electric conductors or elements for information transfer

Definitions

  • the present invention relates to a conductive rope.
  • the ropes that are the subject of the present invention include large-diameter to small-diameter ropes regardless of the magnitude of the load, and further include so-called strings and ropes having a small diameter.
  • a light load rope such as a strap, a medium load rope for general cargo handling, and a heavy load rope for tanker towing and mooring.
  • Synthetic ropes have the advantages of (1) excellent durability, (2) generally light and easy to handle, and (3) do not corrode because they do not absorb moisture.
  • Synthetic fiber rope is used.
  • Synthetic fiber ropes include nylon ropes, vinylon ropes, polyethylene ropes, etc. Among nylons, nylon ropes are most often used because of the strongest tensile strength among synthetic fibers (Non-patent Document 1). ).
  • a wire rope obtained by twisting wires is used instead of a nylon rope. Since the wire rope is highly conductive, static electricity is hard to accumulate, and there is no possibility of an explosion accident due to static spark discharge. However, since the wire rope is heavy and hard, it is difficult to handle, and there is a problem that the tanker is damaged when it hits the surface of the tanker.
  • an object of the present invention is to provide a conductive rope that is less likely to accumulate static electricity and is easy to handle.
  • the conductive rope of the first invention includes a conductive short fiber.
  • the conductive rope of the second invention is characterized by being formed of a strand in which yarns containing conductive short fibers are twisted together.
  • the conductive rope of the third invention is characterized in that conductive short fibers and mixed twisted fibers are mixed and twisted.
  • the conductive rope of the fourth invention is characterized in that it is formed of a strand in which a yarn containing conductive short fibers and a yarn made of mixed twisted fibers are twisted together.
  • the conductive rope of the fifth invention is characterized in that, in the third or fourth invention, the mixed twisted fiber is an ultrahigh molecular weight polyethylene fiber.
  • corona discharge occurs from the end of the conductive short fiber, whereby the charge charged on the conductive rope can be discharged into the atmosphere. Moreover, since it is a short fiber, the number of the edge parts of an electroconductive short fiber increases, corona discharge tends to occur, and the amount of discharge increases. For this reason, static electricity is difficult to accumulate. Furthermore, since it is a fiber rope, it is light and easy to handle. According to the second aspect of the invention, corona discharge occurs from the end of the conductive short fiber, so that the charge charged on the conductive rope can be discharged into the atmosphere.
  • the tensile strength of the conductive rope can be increased, and it can be used for medium to heavy loads.
  • the tensile strength of the conductive rope can be increased, and it can be used for medium to heavy loads.
  • the ultra-high molecular weight polyethylene fiber is mixed and twisted, the tensile strength of the conductive rope can be greatly increased, and it can be used for heavy load applications.
  • FIG. 1 is a conductive yarn obtained by spinning conductive short fibers
  • 2 is a mixed yarn obtained by spinning fibers other than conductive short fibers such as polyethylene
  • 3 is a plurality of conductive yarns.
  • a strand 4 in which the yarn 1 and the mixed twisted yarn 2 are twisted together, 4 is a conductive rope formed by twisting three strands 3.
  • the conductive short fiber is a conductive fiber having a short fiber length of 15 cm or less.
  • the conductive short fiber for example, Corebrid (registered trademark of Mitsubishi Rayon Co., Ltd.) is used.
  • the core brid is a fiber formed by a core-sheath composite spinning technique of wet acrylic fiber, and one fiber is composed of a core part that is the center and a sheath part that covers the outer periphery of the core part.
  • a functional material can be kneaded into the core portion and the sheath portion, and conductive short fibers can be obtained by kneading conductive particles as the functional material.
  • the fiber length of the core brid is 38 mm.
  • the conductive yarn 1 may be obtained by spinning only conductive short fibers, or may be obtained by mixing and spinning the conductive short fibers and other fibers. Polyester or the like is used as the fiber mixed with the conductive short fiber.
  • the mixed twist yarn 2 is obtained by spinning a fiber used for a general rope, and is the same known yarn as the yarn forming the general rope.
  • this known yarn is referred to as “mixed twisted yarn” to distinguish it from conductive yarn.
  • polyethylene, polypropylene, polyester, ultrahigh molecular weight polyethylene fiber, or the like can be used as the fiber forming the twisted yarn 2, and can be selected according to the use of the conductive rope 4 to be formed.
  • the yarn 1 or 2 having the lower elongation rate is cut when a load is applied to the conductive rope 4.
  • the fibers forming the blended yarn are referred to as “mixed twisted fibers”.
  • the ratio of the conductive short fibers contained in the conductive rope 4 can be adjusted by changing the ratio between the conductive yarn 1 and the mixed yarn 2. For example, when the ratio of the conductive short fibers is increased, static electricity is less likely to accumulate as described later, and conversely, when the ratio of the mixed twisted fibers is increased, the tensile strength is increased as described later. Therefore, according to the application of the conductive rope 4, it is possible to select an optimum value as a ratio of the conductive short fibers.
  • the conductive rope 4 is less likely to accumulate static electricity and easily discharges accumulated static electricity.
  • the reason is as follows.
  • the corona discharge is a phenomenon in which a very weak current of several ⁇ A, which is generated from a sharp electrode, is continuously discharged into the atmosphere.
  • both ends of the fiber become “pointed electrodes”, and a charged charge can be discharged by corona discharge. Therefore, when the corona discharge occurs, the electric charge charged on the conductive rope 4 can be discharged into the atmosphere.
  • the conductive short fiber f is a short fiber, the number of end portions per unit length included in the conductive rope 4 is increased. If it does so, corona discharge will occur easily and the amount of discharge will increase. For this reason, static electricity hardly accumulates on the conductive rope 4.
  • the conductive rope 4 has a property that static electricity is difficult to accumulate. Moreover, since the conductive rope 4 is a fiber rope, it has the property of being lighter and easier to handle than the wire rope.
  • the conductive rope 4 shown in FIG. 1 is a so-called three-strand rope in which three strands 3 are Z-twisted, but may be a twisted rope in which four or more strands are twisted. Moreover, you may form by not only Z twist but S twist. Moreover, not only a twisted rope but various structures, such as a braided rope and a knitted rope, can be selected.
  • the knitted rope is a rope having a structure in which a core is covered with a sheath, and the core and the sheath are formed by knitting or twisting a plurality of yarns.
  • the conductive yarn 1 may be used as the yarn forming the core and the sheath.
  • the conductive rope 1 is formed by mixing the conductive yarn 1 and the mixed yarn 2, but the conductive rope 1 may be formed using only the conductive yarn 1.
  • the conductive ropes that are the subject of the present invention include large-diameter to small-diameter ropes regardless of the magnitude of the load, and also include so-called strings and ropes having a small diameter.
  • (1) light load ropes such as straps
  • (3) heavy load for tanker towing and mooring A rope is also included.
  • the light load conductive rope is formed in a small diameter by knitting or twisting only the conductive yarn 1.
  • Lightweight conductive ropes are formed as straps, for example, and are used by workers to lower employee IDs from their necks in factories that are sensitive to static electricity such as semiconductors and LEDs, and chemical factories that are strictly prohibited from fire.
  • the By using a conductive rope for the strap static electricity is unlikely to accumulate even if the strap and work clothes rub. Therefore, in the electronic device factory, it is possible to prevent failure due to static electricity flowing to the electronic device. In chemical factories, explosions can be prevented from occurring due to spark discharge caused by static electricity.
  • the conductive rope for medium load is formed by kneading the conductive yarn 1 and the mixed yarn 2.
  • Polyethylene, polypropylene, polyester, or the like is used as the mixed twisted fiber forming the mixed twisted yarn 2. Since the mixed twisted fiber is mixed and twisted, the tensile strength of the conductive rope can be increased.
  • the medium load rope is formed, for example, as a track rope or a general work rope, and is used for logistics of electronic equipment or cargo handling in a place where fire is strictly prohibited.
  • a track rope as a conductive rope, static electricity is unlikely to accumulate even if the track rope and the luggage are rubbed. Therefore, it is possible to prevent failure due to static electricity flowing to the electronic device during distribution. In places where fire is strictly prohibited, it is possible to prevent an explosion accident from occurring due to spark discharge caused by static electricity.
  • the heavy load conductive rope is formed in a large diameter by mixing the conductive yarn 1 and the mixed twisted yarn 2.
  • a fiber having high tensile strength such as ultrahigh molecular weight polyethylene fiber is used. Since the fiber having a high tensile strength is mixed and twisted, the tensile strength of the conductive rope can be made extremely strong and can be used for heavy load applications.
  • Heavy load ropes are formed, for example, as mooring ropes or tow ropes for ships, and are particularly used for oil tankers, chemical tankers, and LNG ships. By using a rope such as a chemical tanker as a conductive rope, it is possible to prevent an explosion from occurring due to spark discharge due to static electricity.
  • Friction charging voltage test A friction charging voltage test was conducted on the conductive rope. The test was conducted in accordance with JIS-L-1094, and two kinds of tests were conducted when cotton was used as a friction cloth and when hair was used.
  • the conductive rope uses a core bridge as the conductive short fiber and does not mix the twisted fiber.
  • a vinylon rope, a polyester rope, and a nylon rope were also tested under the same conditions.
  • the triboelectric charge test was conducted on the conductive rope. The test was conducted in accordance with JIS-L-1094, and two types of tests were conducted, using acrylic as the friction cloth and using nylon.
  • the conductive rope was obtained by mixing 1.6% of core brid as a conductive short fiber with ultra high molecular weight polyethylene fiber as a mixed twisted fiber.
  • Dyneema rope registered trademark of Toyobo Co., Ltd.
  • nylon rope were also tested under the same conditions.
  • Dyneema ropes were tested both on the surface coated with a sizing agent and not coated with a sizing agent. The test results are as shown in FIG. As can be seen from FIG. 4, the conductive rope has a smaller amount of charged charge than any of the comparative examples. Therefore, it can be seen that the conductive rope is less charged by friction than the comparative example.
  • the conductive rope according to the present invention is less likely to accumulate static electricity than the conventional rope.

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  • Ropes Or Cables (AREA)

Abstract

L'invention porte sur un câble électroconducteur, qui est facile à utiliser et qui est résistant à l'accumulation d'électricité statique. Un câble électroconducteur (4) comprend de courtes fibres électroconductrices. Comme une décharge par effet couronne se produit aux extrémités des fibres courtes électroconductrices, la charge électrique accumulée, accumulée dans le câble électroconducteur (4), peut être déchargée dans l'atmosphère. Comme les fibres sont courtes, davantage d'extrémités de fibres courtes électroconductrices sont présentes, ce qui facilite une décharge par effet couronne et augmente la quantité d'électricité déchargée. Pour cette raison, l'électricité statique ne s'accumule pas facilement.
PCT/JP2010/005908 2010-10-01 2010-10-01 Câble électroconducteur WO2012042576A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2010/005908 WO2012042576A1 (fr) 2010-10-01 2010-10-01 Câble électroconducteur
JP2012536032A JP5479606B2 (ja) 2010-10-01 2010-10-01 導電性ロープ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/005908 WO2012042576A1 (fr) 2010-10-01 2010-10-01 Câble électroconducteur

Publications (1)

Publication Number Publication Date
WO2012042576A1 true WO2012042576A1 (fr) 2012-04-05

Family

ID=45892082

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/005908 WO2012042576A1 (fr) 2010-10-01 2010-10-01 Câble électroconducteur

Country Status (2)

Country Link
JP (1) JP5479606B2 (fr)
WO (1) WO2012042576A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4335953A1 (fr) 2022-09-09 2024-03-13 Teufelberger Fiber Rope GmbH Câble à âme et gaine antistatique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50142853U (fr) * 1974-05-02 1975-11-25
JPH01207483A (ja) * 1988-02-13 1989-08-21 Watabe Kogyo Kk 作業用ロープ
US20060182962A1 (en) * 2005-02-11 2006-08-17 Bucher Richard A Fluoropolymer fiber composite bundle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50142853U (fr) * 1974-05-02 1975-11-25
JPH01207483A (ja) * 1988-02-13 1989-08-21 Watabe Kogyo Kk 作業用ロープ
US20060182962A1 (en) * 2005-02-11 2006-08-17 Bucher Richard A Fluoropolymer fiber composite bundle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4335953A1 (fr) 2022-09-09 2024-03-13 Teufelberger Fiber Rope GmbH Câble à âme et gaine antistatique
EP4339340A1 (fr) 2022-09-09 2024-03-20 Teufelberger Fiber Rope GmbH Câble à âme et gaine antistatique

Also Published As

Publication number Publication date
JP5479606B2 (ja) 2014-04-23
JPWO2012042576A1 (ja) 2014-02-03

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