WO2008023556A1 - Courroies - Google Patents

Courroies Download PDF

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Publication number
WO2008023556A1
WO2008023556A1 PCT/JP2007/065181 JP2007065181W WO2008023556A1 WO 2008023556 A1 WO2008023556 A1 WO 2008023556A1 JP 2007065181 W JP2007065181 W JP 2007065181W WO 2008023556 A1 WO2008023556 A1 WO 2008023556A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
belt
rubber
rubber layer
fibers
Prior art date
Application number
PCT/JP2007/065181
Other languages
English (en)
Japanese (ja)
Inventor
Keisuke Yoshida
Hiroyuki Tachibana
Yasuhiko Yoshida
Yuji Nakamoto
Original Assignee
Bando Chemical Industries, Ltd.
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 Bando Chemical Industries, Ltd. filed Critical Bando Chemical Industries, Ltd.
Publication of WO2008023556A1 publication Critical patent/WO2008023556A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G5/00—V-belts, i.e. belts of tapered cross-section
    • F16G5/20—V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/30—Belts or like endless load-carriers
    • B65G15/32—Belts or like endless load-carriers made of rubber or plastics
    • B65G15/34—Belts or like endless load-carriers made of rubber or plastics with reinforcing layers, e.g. of fabric
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/39—Aldehyde resins; Ketone resins; Polyacetals
    • D06M15/41—Phenol-aldehyde or phenol-ketone resins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts
    • F16G1/28—Driving-belts with a contact surface of special shape, e.g. toothed

Definitions

  • the present invention relates to a belt such as a transmission belt and a conveyance belt.
  • Industrial belts such as transmission belts and conveyor belts are used under severe conditions such as high-speed rotation, high load, and high temperature.
  • an adhesive between a rubber material such as chloroprene rubber, a mixture of hydrogenated nitrile rubber and chlorosulfonated polyethylene rubber, and a fiber is used.
  • the adhesive include a rubber material and a canvas, for example, an RFL treatment liquid in which a vulcanization accelerator is added to a resorcin-formalin rubber latex liquid made of an ethylene- ⁇ -olefin rubber-gen copolymer rubber latex, and the like.
  • Adhesives adhered by the above are known (see Patent Document 1).
  • the belt using the adhesive described in Patent Document 1 has a drawback that it may be difficult to use for a long period of time.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2003-27376
  • the present invention has been made in view of the above-described conventional drawbacks, and an object of the present invention is to provide a belt that can exhibit high dynamic characteristics over a longer period of time.
  • the present invention has been made in view of the above problems, and is a belt in which a rubber material and a fiber material are used, and the fiber material is used by being bonded to the rubber material.
  • the fiber material is polyester fiber, cotton fiber, polyamide fiber, vinylon fiber, polyketone fiber, polyparaphenylene benzobisoxazole fiber, polyethylene fiber, polyarylate fiber, polyether ether 'ketone fiber, glass Fiber and aramid fiber, composed of at least one fiber selected from the group consisting of
  • the material is impregnated with a resorcin formalin latex adhesive composition containing a latex component which is at least 50% by weight of the solid component 3 ⁇ 4 chloro-1,3 butadiene 2,3-dichloro-1,3, -butadiene copolymer latex. It is related with the belt characterized by being made.
  • a transmission belt and a conveyance belt can be cited.
  • FIG. 1 is a cross-sectional view of a V-ribbed belt as an example of a transmission belt.
  • FIG. 2 shows a cross-sectional view of a V belt which is an example of a transmission belt.
  • FIG. 3 shows a schematic diagram of a belt drive system for use in testing a transmission belt.
  • the transmission belt of the present embodiment includes a laminated body in which at least two types of rubber layers of an adhesive rubber layer in which a core wire, which is a fiber material, is embedded, and a compressed rubber layer are laminated, and an upper surface and a lower surface of the laminated body. Or a fabric material that is a fiber material bonded to the entire peripheral surface, and a fiber material strength of at least one of the core wire and the fabric material.
  • Polyester fiber cotton fiber, polyamide fiber, vinylon fiber, polyketone fiber, polyparaphenylene It is composed of at least one fiber selected from the group consisting of benzobisoxazole fiber, polyethylene fiber, polyarylate fiber, polyether 'ether' ketone fiber, glass fiber and polyamide fiber.
  • the fiber material composed of the above-mentioned fibers contains 2-chloro-1,3-butadiene-2,3-dichloro-1,3-butadiene copolymer latex, which is a component of strength and latex components.
  • the resorcin formalin latex adhesive composition in which the content of the 2-chloro-1,3-butadiene-2,3-dichloro-1,3 butadiene copolymer latex in the solid component is at least 50% by mass is impregnated! / RU
  • the “power transmission belt” includes a V belt (V-ribbed belt, etc.), a flat belt, a toothed belt, and the like.
  • the compressed rubber layer and the adhesive rubber layer form a laminated body.
  • a laminate is laminated by rubber material force vulcanization bonding used for forming the compression rubber layer and the adhesive rubber layer, respectively.
  • a core wire can be bonded and embedded in the adhesive rubber layer.
  • a cloth material can be bonded to the entire surface including the upper surface, the lower surface, or the side surface of the laminate.
  • the transmission belt of the present embodiment includes at least one fiber material of the core wire and the cloth material, force S, polyester fiber, cotton fiber, polyamide fiber (for example, nylon (trade name) fiber), vinylon fiber, At least one fiber selected from the group consisting of polyketone fiber, polyparaphenylene benzobisoxazole fiber, polyethylene fiber, polyarylate fiber, polyether 'ether' ketone fiber, glass fiber and aramid fiber
  • One major feature is that it consists of Therefore, according to the transmission belt of the present embodiment, the adhesion force between the fiber and the rubber material used for forming each of the compressed rubber layer and the adhesive rubber layer is increased. High durability And! /, Show an excellent effect.
  • the fiber material from the viewpoint of further improving the adhesion of the fiber material, it is formed of a rubber material including at least one force S of the compression rubber layer and the adhesive rubber layer, and ethylene ⁇ -olefin rubber. It is preferable that In this way, a power transmission belt in which the core wire is vulcanized and bonded in an adhesive rubber layer made of an ethylene ⁇ -olefin rubber compound is highly effective! To demonstrate.
  • the rubber material containing the ethylene ⁇ -olefin rubber can be used in a solution state when forming a compression rubber layer and an adhesive rubber layer.
  • This solution can be prepared by dissolving ethylene ⁇ -olefin rubber with a suitable organic solvent.
  • the ethylene ⁇ -olefin rubber is not particularly limited.
  • the a-olefin excluding ethylene is preferably, for example, propylene, butene, hexene, and the like from the viewpoint of sufficiently expressing the heat resistance and dynamic characteristics of the obtained transmission belt. At least one selected from the group consisting of otatens.
  • the ⁇ -olefin, excluding force and ethylene may be used alone or as a mixture of two or more.
  • the ethylene ⁇ -olefin rubber is preferably ethylene propylene rubber, a partial halogen substitution thereof, particularly a partial chlorine substitution, or a mixture of two or more thereof.
  • the ethylene ⁇ -olefin rubber is preferably, for example, a copolymer of ethylene, propylene, and nonconjugated gen (ethylene propylene rubber) from the viewpoint of stably exhibiting physical properties.
  • the iodine value of the elastomer is 50 or less, preferably 4 to 40, and the Mooney viscosity ML (100) is 20 to 1.
  • the amount of ethylene in the copolymer is 49 to 80% by mass, the amount of propylene is 19 to 50% by mass, and the remaining amount of non-conjugated diene is included.
  • the gen component is not particularly limited, and examples thereof include non-conjugated gens such as 1,4-monohexagen, dicyclopentagen, and ethylidene norbornene.
  • non-conjugated genes such as 1,4-monohexagen, dicyclopentagen, and ethylidene norbornene.
  • fillers such as carbon black, silica, glass fibers and ceramic fibers, fillers such as calcium carbonate and talc, plasticizers, stable It may further contain various chemicals used in the normal rubber industry, such as agents, processing aids, and colorants.
  • An ethylene ⁇ -olefin rubber compound for forming a compression rubber layer or an adhesive rubber layer is prepared by combining an ethylene ⁇ -olefin rubber with an agent such as that described above, as usual, such as a roll or a banbari. It can be obtained by mixing uniformly using a mixing means.
  • the fiber material of at least one of the core wire and the cloth material is polyester fiber, cotton fiber, polyamide fiber, vinylon fiber, polyketone fiber, polyparaphenylene resin. It is composed of at least one fiber selected from the group consisting of Nzobisoxazole fiber, polyethylene fiber, polyarylate fiber, polyether 'ether' ketone fiber, glass fiber and aramid fiber. Such fibers may be used alone or as a mixture of two or more.
  • the cloth material is not particularly limited, and examples thereof include a cloth material composed of a polyester cotton blended canvas.
  • the core wire is not particularly limited, and examples thereof include a core wire made of polyester fiber (also referred to as a polyester core wire). Of these, polyethylene terephthalate fiber and polyethylene naphthalate fiber are preferable from the viewpoint of obtaining sufficient strength for use.
  • the fiber material of at least one of the core wire and the cloth material includes 2 chloro-1,3 butadiene 2,3 dichloro-1,3 butadiene copolymer latex as a latex component.
  • Another major characteristic is that it is impregnated with the contained resorcin formalin latex adhesive composition (hereinafter also referred to as “RFL adhesive composition”). Therefore, in the transmission belt of the present embodiment, an excellent effect that at least one of the fiber material of the core wire and the cloth material is in a state suitable for improving adhesiveness with the compression rubber layer and the adhesive rubber layer. Demonstrate.
  • the transmission belt of the present embodiment since at least one of the core wire and the fabric material is composed of the fiber and impregnated with the RFL adhesive composition, Between the core wire and the cloth material and the compressed rubber layer and the adhesive rubber layer Can exhibit high adhesive strength. Thereby, according to the transmission belt of this embodiment, the high dynamic characteristic is expressed and the outstanding effect of achieving a longer lifetime is exhibited.
  • the RFL adhesive composition used in the power transmission belt of the present embodiment is composed of 2-chloro-1,3-butadiene-2,3-dichloro-1,3-butadiene copolymer latex and a latex component of the RFL adhesive composition.
  • the solid components in, from the viewpoint of obtaining a sufficient adhesiveness least 50 mass 0/0, preferably, is preferable those containing more than 60 wt%.
  • concentration of the solid component in the latex component in the said RFL adhesive composition is not specifically limited, Usually, it is the range of 10-50 mass%.
  • the RFL adhesive composition may be prepared by, for example, condensing resorcin and formalin in the presence of a basic catalyst such that resorcin / formalin (molar ratio) is 1/3 to 3/1. It can be prepared by preparing an aqueous solution containing ⁇ 80 mass% resorcin formalin resin (resorcin formalin initial condensate, hereinafter referred to as “RF”), and then mixing the aqueous solution with rubber latex.
  • RF resorcin formalin initial condensate
  • the RFL adhesive composition may contain a condensate of a chlorophenol compound.
  • the RFL adhesive composition may further contain a metal oxide that functions as a crosslinking agent and a sulfur-containing vulcanization accelerator.
  • a metal oxide that functions as a crosslinking agent and a sulfur-containing vulcanization accelerator When the transmission belt of this embodiment has a core wire and a fabric material impregnated with an RFL adhesive composition containing a metal oxide and a sulfur-containing vulcanization accelerator, the core wire and the rubber of the adhesive rubber layer It exhibits an excellent effect of further improving dynamic bonding with the material.
  • the transmission belt of the present embodiment is manufactured, when the RFL adhesive composition containing the metal oxide and the sulfur-containing vulcanization accelerator is impregnated into, for example, a polyester core wire, the core after the impregnation is used. By heating and drying the wire to a temperature exceeding 200 ° C, the dynamic bonding between the polyester core and the adhesive rubber is further enhanced, and the time required for the bonding process of the polyester core is shortened. It has an excellent effect of being able to
  • the metal oxide is not particularly limited, and examples thereof include zinc oxide, magnesium oxide, lead oxide, and a mixture of two or more thereof. Among the metal oxides Then, from the viewpoint of obtaining sufficient reactivity and adhesion, zinc oxide is preferable.
  • the blending ratio of the metal oxide in the RFL adhesive composition is preferably in the range of 0.;! To 10 parts by mass with respect to 100 parts by mass of the solid component of the latex component in the RFL adhesive composition. .
  • the sulfur-containing vulcanization accelerator is not particularly limited! /, For example, a thiazonole compound, a sulfenamide compound, a thiuram compound, a dithiorubamate, and a mixture of two or more of these Etc.
  • the thiazole compound is not particularly limited, and examples thereof include 2-mercaptobenzothiazole or a salt thereof (for example, zinc salt, sodium salt, cyclohexylamine salt, etc.), dibenzothiazyl disulfide, and the like.
  • the sulfenamide compound is not particularly limited, and examples thereof include N cyclohexyl 2-benzothiazylsulfenamide.
  • the thiuram compound is not particularly limited, and examples thereof include tetramethylthiuram monosulfide and tetra.
  • the dithiopower rubamate compound is not particularly limited, and examples thereof include sodium di-n-butyldithiocanolebamate, zinc dimethyldithiocanolebamate, and zinc diethyldithiocarbamate.
  • the blending ratio of the sulfur-containing vulcanization accelerator to the RFL adhesive composition is in the range of 0.;! To 20 parts by mass with respect to 100 parts by mass of the solid component in the latex component of the RFL adhesive composition. It is desirable.
  • the transmission belt of the present embodiment is manufactured by, for example, an RFL adhesive containing, as a latex component, the 2-chloro-1,3 butadiene 2,3 dichloro-1,3 butadiene copolymer latex in the core wire.
  • the core wire is impregnated with the composition and sandwiched between unvulcanized rubber sheets forming an adhesive rubber layer, and the obtained product is stacked with an unvulcanized rubber sheet forming a compressed rubber layer, and heated. This can be done by pressing and vulcanizing as a unit.
  • the core wire is impregnated with the RFL adhesive composition, for example, by immersing the core wire in the RFL adhesive composition, and then at a temperature of 200 to 240 ° C, preferably 210 to 235 ° C. This can be done by heating (baking) and drying to fix the RFL adhesive composition to the core.
  • the core wire When impregnating the core wire with the RFL adhesive composition, for example, at least two series of steps consisting of immersion of the core wire in the RFL adhesive composition and drying treatment of the core wire are performed. It may be performed once. Specifically, for example, the first RFL treatment is performed by dipping the core wire in the first RFL adhesive composition and drying by heating, and then dipping in the second RFL adhesive composition.
  • the core wire can be impregnated with the RFL adhesive composition by performing the second RFL treatment by heating and drying. In such a case, the first RFL adhesive composition and the second RFL adhesive composition may be the same or different from each other.
  • a series of steps including the immersion of the core wire in the RFL adhesive composition and the drying treatment of the core wire may be performed three times or more! /.
  • the RFL adhesive composition used in the manufacture of the transmission belt of this embodiment may contain other latexes in addition to 2-chloro-1,3 butadiene 2,3 dichloro-1,3 butadiene copolymer latex.
  • other latex chlorosulfonated polyethylene latex is preferable.
  • the core wire prior to impregnating the core wire, for example, a polyester core wire, with the RFL adhesive composition, the core wire may be treated with isocyanate or epoxy. . That is, a core wire, for example, a polyester core wire, is immersed in a solution containing an isocyanate compound or an epoxy compound, and then heated and dried as necessary to pretreat the core wire. You may do it.
  • the isocyanate compound is not particularly limited, and examples thereof include tolylene diisocyanate, m-phenylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, and polymethylene polyphenyl. Polyisocyanate and the like are preferably used.
  • a polyhydric alcohol-added polyisocyanate obtained by reacting such an isocyanate compound with a compound having two or more active hydrogens in the molecule such as trimethylolpropane or pentaerythritol, or the above isocyanate compound.
  • a blocked polyisocyanate obtained by reacting a phenol compound, a tertiary alcohol compound, a secondary amine compound or the like with a blocking agent to block the inocyanate group of the isocyanate compound can also be preferably used as the isocyanate compound.
  • the epoxy compound is not particularly limited as long as it is a polyepoxy compound having two or more epoxy groups in the molecule.
  • polyhydric alcohols such as ethylene glycol, glycerin, sonorebitol, pentaerythritol, Polyethylene glycol Reaction products of polyalkylene glycols such as e-chlorohydrin and other halogen-containing epoxy compounds; polyvalents such as resorcin, bis (4-hydroxyphenyl) dimethylethane, phenol formaldehyde resin, resorcin formaldehyde resin
  • a reaction product of a phenol compound or a phenol resin and a halogen-containing epoxy compound such as epichlorohydrin is preferable.
  • the solvent for forming the isocyanate compound solution or the epoxy compound solution is not particularly limited, and water or an appropriately selected organic solvent is used depending on the isocyanate compound and the epoxy compound to be used.
  • the isocyanate compound is chemically very active, a compound obtained by blocking the isocyanate group of the isocyanate compound with a phenol compound or the like, which is usually used as a non-aqueous solution, may be used as an aqueous solution. Can be used.
  • organic solvent examples include, but are not limited to, aromatic hydrocarbons such as benzene, xylene, and toluene; aliphatic ketones such as methyl ethyl ketone and methyl isoptyl ketone; and aliphatic carboxyls such as ethyl acetate and amyl acetate. Examples include acid alkyl esters.
  • concentration of the isocyanate compound or the epoxy compound in the solution of the isocyanate compound or the epoxy compound in the solution of the isocyanate compound is in the range of 5 to 50% by mass from the viewpoint of exhibiting sufficient adhesiveness.
  • a core wire for example, a polyester core wire
  • the core wire may be treated with an RFL adhesive composition, and then the core wire may be treated with a rubber paste.
  • a rubber paste a rubber material for forming a compression rubber layer and an adhesive rubber layer, for example, a solution obtained by dissolving ethylene ⁇ -olefin rubber in an appropriate organic solvent (containing the ethylene ⁇ -olefin rubber) Etc.).
  • the core wire may be dipped in the solution and then dried by heating.
  • FIG. 1 shows a cross-sectional view of an example of a transmission belt (V-ribbed belt) of the present embodiment.
  • the V-ribbed belt shown in FIG. 1 includes an adhesive rubber layer 3 having a rubber composition as a constituent member, an upper canvas layer 1 disposed on the upper surface side of the adhesive rubber layer 3, and a lower surface side of the adhesive rubber layer 3. Compression arranged in The upper surface canvas layer 1, the adhesive rubber layer 3, and the compression rubber layer 5 are integrally formed.
  • the upper canvas layer 1 is formed of a single layer or multiple layers of rubberized canvas 1, and an adhesive rubber layer 3 is laminated adjacently.
  • a plurality of low-stretch cores 2 made of polyester fibers are embedded so as to extend in the longitudinal direction of the belt at intervals.
  • a compressed rubber layer 5 is laminated adjacent to the adhesive rubber layer.
  • the compressed rubber layer has rib portions 4 that are spaced from each other so as to extend in the longitudinal direction of the belt.
  • rib portions 4 On the bottom surface side of the compressed rubber layer 5, three rib portions 4 provided so as to extend in the belt length direction are formed at a predetermined pitch in the belt width direction. Further, in the central region of the adhesive rubber layer 3 in the belt thickness direction, a plurality of cords 2 extending in a substantially belt length direction and spirally provided with a predetermined pitch in the belt width direction are fixed. It is buried at intervals.
  • short fibers 6 may be oriented and dispersed in the compressed rubber layer 5 in order to enhance the lateral pressure resistance. Examples of the short fibers include, but are not limited to, polyamide fiber giron (trade name) fiber, aramid fiber, cotton, vinylon fiber, and the like.
  • the short fiber which is a fiber material impregnated with the RFL adhesive composition.
  • the transmission belt of the present embodiment can be manufactured as follows, for example, in the case of a V-ribbed belt. That is, one or more rubber-coated canvases and an unvulcanized rubber sheet for the adhesive rubber layer are wrapped around the peripheral surface of a cylindrical molding drum with a smooth surface, and a polyester core wire is spirally wound. In addition, an unvulcanized rubber sheet for the adhesive rubber layer is wound thereon, and then an unvulcanized rubber sheet for the compressed rubber layer is wound into a laminated body, and this is placed in a vulcanized can. And pressurize and vulcanize to obtain an annular product.
  • the annular material is stretched between a driving roll and a driven roll, and while running under a predetermined tension, a plurality of ribs are formed on the surface by a grinding wheel. After that, this annular object is further laid between another drive roll and a driven roll to travel to a predetermined width. If it is cut, a V-ribbed belt as a product can be obtained.
  • FIG. 2 shows a cross-sectional view of an example of the V-belt.
  • the upper surface of the V-belt shown in FIG. 2 is formed of a single layer or multiple layers of rubberized canvas, as described above, and an upper rubber layer 7 is laminated as necessary.
  • the adhesive rubber layer 3 in which the core wire 2 is embedded is laminated, and further, the compressed rubber layer 5 is laminated adjacent thereto.
  • short fibers 6 are oriented and dispersed in the width direction of the belt in the compressed rubber layer 5 in order to increase the side pressure resistance.
  • the compressed rubber layer is usually covered with a single layer or multiple layers of rubberized canvas 1.
  • the present invention provides polyester fibers, cotton fibers, polyamide fibers, vinylon fibers, polyketone fibers, polyparaphenylene benzobisoxazole fibers, polyethylene fibers, polyarylate fibers, polyethers. Consists of at least one fiber selected from the group consisting of 'ether' ketone fiber, glass fiber, and polyamide fiber, and latex of 2-chloro-1,3 butadiene 2,3 dichloro-1,3 butadiene copolymer latex
  • the present invention relates to a conveyor belt reinforced with a fiber material impregnated with a resorcin formalin latex adhesive composition contained as a component.
  • the transport belt of the present embodiment is reinforced by the fiber material, it exhibits an excellent effect of exhibiting high dynamic characteristics over a longer period of time. In addition, the transport belt of this embodiment exhibits excellent durability.
  • Examples of the conveyor belt of the present embodiment include a conveyor belt reinforced by laminating a rubber layer and the fiber material.
  • cloth material hereinafter also referred to as “heart canvas” on both the upper surface side on which the object is placed and the lower surface side on the opposite side. Can be used to illustrate the power!
  • a core wire (hereinafter also referred to as “heart cord”) extending in the belt length direction and arranged with a predetermined pitch in the belt width direction is provided in the central region in the thickness direction.
  • Conveyor belt The ability to show the ⁇ row is S.
  • the rubber layer is laminated so as to sandwich the core cord located in the central portion in the thickness direction from above and below, thereby illustrating the conveyance belt in which the core cord is bonded and embedded in the rubber layer. Touch with S.
  • the rubber layer is formed of a rubber material containing ethylene ⁇ -olefin rubber from the viewpoint of further improving the adhesion of the fiber material.
  • the rubber material containing the ethylene ⁇ -olefin rubber can be used in a solution state when the rubber layer is formed.
  • This solution can be prepared by dissolving ethylene ⁇ -olefin rubber with a suitable organic solvent.
  • the ethylene ⁇ -olefin rubber is not particularly limited.
  • the a-olefin excluding ethylene is preferably, for example, propylene, butene, hexene, and the like from the viewpoint of sufficiently expressing the heat resistance and dynamic characteristics of the resulting transport belt. At least one selected from the group consisting of otatens.
  • the ⁇ -olefin, excluding force and ethylene may be used alone or as a mixture of two or more.
  • the ethylene ⁇ -olefin rubber is preferably ethylene propylene rubber, a partial halogen substitution thereof, particularly a partial chlorine substitution, or a mixture of two or more thereof.
  • the ethylene ⁇ -olefin rubber is preferably, for example, a copolymer of ethylene, propylene, and non-conjugated diene (ethylene propylene rubber) from the viewpoint of stably exhibiting physical properties.
  • the iodine value of the elastomer is 50 or less, preferably 4 to 40, and the Mooney viscosity ML (100) is 20 to 1.
  • the amount of ethylene in the copolymer is 49 to 80% by mass, the amount of propylene is 19 to 50% by mass, and the remaining amount of non-conjugated diene is included.
  • the gen component is not particularly limited.
  • 1, 4 monohexagen, di- Non-conjugated genes such as cyclopentagen and ethylidene norbornene.
  • the rubber material containing the ethylene ⁇ -olefin rubber fillers such as carbon black, silica, glass fiber, and ceramic fiber, fillers such as calcium carbonate and talc, plasticizers, and stabilizers are used as necessary. It may further contain various chemicals used in the normal rubber industry, such as agents, processing aids, and colorants.
  • An ethylene ⁇ -olefin rubber compound for forming a compression rubber layer or an adhesive rubber layer is prepared by combining an ethylene ⁇ -olefin rubber with an agent such as that described above, as usual, such as a roll or a banbari. It can be obtained by mixing uniformly using a mixing means.
  • At least one of the fiber cords and the canvas of the core body is made of polyester fiber, cotton fiber, polyamide fiber, vinylon fiber, polyketone fiber, Polyparaphenylene benzobisoxazole fiber, polyethylene fiber, polyarylate fiber, polyether ether 'ketone fiber, glass fiber and aramid fiber, composed of at least one fiber selected from the group consisting of .
  • Such fibers may be used alone or as a mixture of two or more.
  • the material of the core canvas is not particularly limited, and examples thereof include polyester cotton blended canvas.
  • the core cord is not particularly limited, and examples thereof include a heart cord made of aramid fibers (hereinafter also referred to as “aramide cord”).
  • At least one of the core cord and the canvas of the core body is made of 2 chloro-1,3 butadiene 2,3 dichloro-1,3 butadiene copolymer.
  • RTL adhesive composition a resorcin-formalin latex adhesive composition containing latex as a latex component. Therefore, in the conveyance belt of this embodiment, the excellent effect that the fiber material force S of at least one of the core body cord and the core body canvas and the adhesiveness with the rubber layer are improved is exhibited.
  • At least one fiber material of the core cord and the core canvas is composed of the fibers and impregnated with the RFL adhesive composition. Therefore, a high adhesive force can be expressed between the core cord and the core canvas and the rubber layer. Thereby, according to the conveyor belt of this embodiment, high V, dynamic characteristics are manifested, and when it has a longer life, it has excellent effects.
  • the RFL adhesive composition used for the conveyor belt of the present embodiment comprises 2 chloro-1,3-butadiene 2,3 dichloro-1,3 butadiene copolymer latex in the latex component of the RFL adhesive composition.
  • of solid components from the viewpoint of obtaining a sufficient adhesiveness, least 50 mass 0/0, preferably, is preferable those containing more than 60 wt%.
  • concentration of the solid component in the latex component in the said RFL adhesive composition is not specifically limited, Usually, it is the range of 10-50 mass%.
  • the RFL adhesive composition may be prepared by, for example, condensing resorcin and formalin in the presence of a basic catalyst so that resorcin / formalin (molar ratio) is 1/3 to 3/1. It can be prepared by preparing an aqueous solution containing ⁇ 80 mass% resorcin formalin resin (resorcin formalin initial condensate, hereinafter referred to as “RF”), and then mixing the aqueous solution with rubber latex.
  • RF resorcin formalin initial condensate
  • the RFL adhesive composition may contain a chlorophenol compound condensate or the like.
  • the RFL adhesive composition may further contain a metal oxide that functions as a crosslinking agent and a sulfur-containing vulcanization accelerator.
  • the conveyor belt of the present embodiment has a core cord and a core canvas impregnated with an RFL adhesive composition containing a metal oxide and a sulfur-containing vulcanization accelerator, the core cord or core The dynamic adhesion between the canvas and the rubber layer is effective.
  • the RFL adhesive composition containing the metal oxide and the sulfur-containing vulcanization accelerator is impregnated, for example, when the aramid cord is impregnated at the time of manufacturing the conveyor belt of the present embodiment, the aramid cord after impregnation is used. By heating to a temperature exceeding ° C and drying, dynamic bonding between the aramid cord and the rubber layer can be further enhanced, and the time for the bonding treatment of the aramid cord can be shortened.
  • the metal oxide is not particularly limited, and examples thereof include zinc oxide, magnesium oxide, lead oxide, and a mixture of two or more thereof.
  • zinc oxide is preferable from the viewpoint of obtaining sufficient reactivity and adhesion.
  • the blending ratio of the metal oxide in the RFL adhesive composition is the same as that in the RFL adhesive composition. It is desirable that the amount is in the range of 0.
  • the sulfur-containing vulcanization accelerator is not particularly limited! /, But, for example, a thiazonole compound, a sulfenamide compound, a thiuram compound, a dithiorubamate, and a mixture of two or more of these Etc.
  • the thiazole compound is not particularly limited, and examples thereof include 2-mercaptobenzothiazole or a salt thereof (for example, zinc salt, sodium salt, cyclohexylamine salt, etc.), dibenzothiazyl disulfide, and the like.
  • the sulfenamide compound is not particularly limited, and examples thereof include N cyclohexyl 2-benzothiazylsulfenamide.
  • the thiuram compound is not particularly limited, and examples thereof include tetramethylthiuram monosulfide and tetra.
  • the dithiopower rubamate compound is not particularly limited, and examples thereof include sodium di-n-butyldithiocanolebamate, zinc dimethyldithiocanolebamate, and zinc diethyldithiocarbamate.
  • the blending ratio of the sulfur-containing vulcanization accelerator to the RFL adhesive composition is in the range of 0.;! To 20 parts by mass with respect to 100 parts by mass of the solid component in the latex component of the RFL adhesive composition. It is desirable.
  • the conveyor belt of the present embodiment is manufactured by, for example, an RFL adhesive composition containing, as a latex component, the 2 chloro-1,3 butadiene 2,3 dichloro-1,3 butadiene copolymer latex in a core cord.
  • the core cord is impregnated with an object, and the core cord is sandwiched between unvulcanized rubber sheets forming a rubber layer, and the resulting product is heated and pressurized to vulcanize as a unit.
  • the core body cord is impregnated with the RFL adhesive composition, for example, the core body cord is soaked in the RFL-bonded homogeneous IJ yarn and the composition, and then 200-240.
  • C preferably 210-235. It can be made by heating (baking) to the temperature of C, drying and fixing the RFL adhesive composition to the core cord.
  • the core body cord When impregnating the core body cord with the RFL adhesive composition, for example, there are few series of steps consisting of immersion of the core body cord in the RFL adhesive composition and drying treatment of the core wire. Both may be done twice. Specifically, for example, the heart body cord is connected to the first RFL adhesive group. The first RFL treatment is performed by dipping in the composition and heat drying, and then the second RFL treatment is performed by dipping in the second RFL adhesive composition and heat drying. The core body cord can be impregnated with the RFL adhesive composition. In such a case, the first RFL adhesive composition and the second RFL adhesive composition may be the same as or different from each other. If necessary, a series of steps comprising immersing the core cord in the RFL adhesive composition and drying the core cord may be performed three or more times.
  • the RFL adhesive composition used in the production of the conveyor belt of this embodiment may contain other latexes in addition to the 2 chloro-1,3 butadiene 2,3 dichloro-1,3 butadiene copolymer latex.
  • the other latex chlorosulfonated polyethylene latex is preferable.
  • the core wire may be subjected to an isocyanate treatment or an epoxy treatment prior to impregnation of the core body cord, for example, the aramid cord, with the RFL adhesive composition. That is, after immersing a core cord, for example, aramid cord, in a solution containing an isocyanate compound or a solution containing an epoxy compound, the core cord is preliminarily formed by heating and drying as necessary. Processing may be performed
  • the isocyanate compound is not particularly limited, and examples thereof include tolylene diisocyanate, m-phenylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, and polymethylene polyphenyl. Polyisocyanate and the like are preferably used.
  • a polyhydric alcohol-added polyisocyanate obtained by reacting such an isocyanate compound with a compound having two or more active hydrogens in the molecule such as trimethylolpropane or pentaerythritol, or the above isocyanate compound.
  • a blocked polyisocyanate obtained by reacting a phenol compound, a tertiary alcohol compound, a secondary amine compound or the like with a blocking agent to block the inocyanate group of the isocyanate compound can also be preferably used as the isocyanate compound.
  • the epoxy compound is not particularly limited as long as it is a polyepoxy compound having two or more epoxy groups in the molecule.
  • polyhydric alcohols such as ethylene glycol, glycerin, sonolebithonole, pentaerythritol, Polyethylene glycol Products of polyalkylene glycols such as epoxychlorohydrin and other halogen-containing epoxy compounds; polyvalents such as resorcin, bis (4-hydroxyphenyl) dimethylethane, phenol formaldehyde resin, resorcin formaldehyde resin
  • a reaction product of a phenol compound or a phenol resin and a halogen-containing epoxy compound such as epichlorohydrin is preferable.
  • the solvent for forming the isocyanate compound solution or the epoxy compound solution is not particularly limited, and water or an appropriately selected organic solvent is used depending on the isocyanate compound and the epoxy compound to be used.
  • the isocyanate compound is chemically very active, a compound obtained by blocking the isocyanate group of the isocyanate compound with a phenol compound or the like, which is usually used as a non-aqueous solution, may be used as an aqueous solution. Can be used.
  • organic solvent examples include, but are not limited to, aromatic hydrocarbons such as benzene, xylene, and toluene; aliphatic ketones such as methyl ethyl ketone and methyl isoptyl ketone; and aliphatic carboxyls such as ethyl acetate and amyl acetate. Examples include acid alkyl esters.
  • concentration of the isocyanate compound or the epoxy compound in the solution of the isocyanate compound or the epoxy compound in the solution of the isocyanate compound is in the range of 5 to 50% by mass from the viewpoint of exhibiting sufficient adhesiveness.
  • the core body cord for example, aramid cord
  • the core body cord may be treated with the RFL adhesive composition, and then the core body cord may be treated with rubber paste.
  • the rubber paste include rubber materials for forming a rubber layer, for example, a solution obtained by dissolving ethylene ⁇ -olefin rubber in an appropriate organic solvent (the ethylene a-olefin rubber compound).
  • the core body cord is immersed in the solution and then dried by heating! /.
  • the term "conveying belt” refers to a belt that conveys a lightweight conveyed object of several kg or less, a belt that conveys heavy objects such as ore, earth and sand, cement, a sharply inclined conveyor belt, and a pipe. Use it for the purpose of including a conveyor belt, a person conveyor belt (passenger belt), etc.
  • HAF carbon Mitsubishi Chemical Company
  • Tizimidazole 1 part by weight of Tizimidazole] and tackifier [made by Nippon Zeon Co., Ltd., trade name: Petroleum Resin Quinton A-10 0] 5 parts by weight and 2 parts by weight of short fibers (cotton powder) A composition was obtained.
  • HAF carbon Mitsubishi Chemical Company
  • paraffin oil manufactured by Sun Chemical Co., Ltd., trade name: Sunflex 2280
  • vulcanizing agent manufactured by Hosoi Chemical Co., Ltd., oil sulfur
  • vulcanization accelerator Ouchi Shinsei Chemical Co., Ltd., trade name: EP-150, mixture of diben lead
  • M Vulcanizing aid manufactured by Kao Corporation, stearic acid
  • vulcanizing aid manufactured by Sakai Chemical Industry Co., Ltd., zinc oxide
  • anti-aging wrinkle prevention IJ [Ouchi Shinsei Chemical Co., Ltd., trade name: MB4] 1 part by weight
  • short fiber Name: 66 nylon (trade name) fiber, 6 de X lmm] 22 parts by mass were blended to obtain a composition for a compressed rubber layer.
  • Resorcin, formalin (concentration at 37% by mass), sodium hydroxide, and water are mixed in a mass ratio of 5.6: 6.0: 0.6: 115.6, and resorcin.formalin resin (resorcin formalin)
  • An initial condensate) (also referred to as RF) aqueous solution a was obtained.
  • resorcin and formalin concentration at 37% by mass
  • an aqueous sodium hydroxide solution is added to the resulting mixture, stirred, and water is further added.
  • an RF aqueous solution a having a solid component concentration of 6.57% by mass was obtained.
  • Untreated polyester cotton canvas [(characteristic when processed to wide angle) Yarn material: polyester and cotton blended canvas; mass ratio of polyester to cotton 50: 50; Yarn composition Warp: 20 S / 2 ( Meaning of 20 stitches from 2 pieces), weft: 20 S / 2 (meaning 20 pieces from 2 pieces); Number of twists: warp S twist 59 times / 10 cm, weft: 59 times / 10 cm; Weaving method: Processing plain weave so that the crossing angle force between warp and weft is 120 ° (90 ° is acceptable); Density warp: 85/5111, weft: 85/5111] were dipped in the RFL adhesive composition A, and then heat-dried at 150 ° C. for 3 minutes.
  • the obtained polyester cotton canvas was immersed in an adhesive solution [the same ethylene propylene rubber dissolved in toluene as used in the adhesive rubber layer composition]. Thereafter, the obtained polyester cotton canvas was heat-dried at 60 ° C. for 10 minutes to obtain an adhesion-treated polyester cotton canvas.
  • RF aqueous solution a prepared in Example 1 and DCB / VP mixture 1 [2 Chloro-1,3 butadiene-1,2,3 dichloro-1,3 butadiene copolymer (DCB) latex: burpyridin styrene butadiene latex (VP ) (Nippon A & L Co., Ltd., 40 masses of solid components.
  • DCB Chloro-1,3 butadiene-1,2,3 dichloro-1,3 butadiene copolymer
  • VP burpyridin styrene butadiene latex
  • a resorcin formalin tex (RFU adhesive composition C) having the composition shown in Table 1 was obtained in the same manner as in Example 1 except that the composition was 239.
  • a peel test sample was obtained in the same manner as in Example 1.
  • each sample of Examples 1-2 and Comparative Examples 1-2 was measured according to JIS 6256 (1999). Specifically, each peel test sample was cut to a width of 2.54 Ocm, and the resulting product was put into a peel tester, and the rubber sheet part and the polyester cotton canvas part became 180 °. Then, the adhesive strength was measured by peeling at a pulling rate of 50 mm / min. The results are shown in Table 2.
  • the fabric material was composed of polyester fibers, 2 Rho 1,3-Butadiene 2,3-Dichloro-1,3-Butadiene copolymer latex is contained as a latex component, and the 2-chloro-1,3-butadiene 2,3-dichloro- in the solid component of the latex component
  • Resorcin, formalin (concentration at 37% by mass), sodium hydroxide, and water are blended in a mass ratio of 7. 31: 10. 77: 0.33 (solid component): 160. 91. Obtained. Specifically, resorcin and formalin (concentration at 37% by mass) are mixed and stirred, and an aqueous sodium hydroxide solution is added to the resulting mixture and stirred, and water is further added. The obtained mixture was aged for 5 hours to obtain an RF aqueous solution b having a solid component concentration of 6.40% by mass.
  • a polyester filament was twisted into a strand, which was then twisted to obtain a polyester (polyethylene terephthalate) core.
  • the obtained polyester core wire was immersed in a toluene solution of isocyanate (isocyanate solid content 20% by mass). Thereafter, the obtained polyester core was maintained at 240 ° C. for 40 seconds and dried to pretreat the polyester core.
  • the pretreated polyester core wire obtained was immersed in the RFL adhesive composition shown in Table 3, and then maintained at 200 ° C for 80 seconds to dry, thereby performing the first RFL treatment. It was. Next, the obtained polyester core wire was immersed in the RFL adhesive composition shown in Table 3, and then maintained at 200 ° C. for 80 seconds to dry, thereby performing a final RFL treatment.
  • the polyester fiber after the treatment was immersed in an adhesive solution (the same ethylene propylene gen rubber used in the adhesive rubber layer composition of Production Example 1 dissolved in toluene). Thereafter, the obtained polyester cotton canvas was immersed in an adhesive solution. Thereafter, the obtained polyester core was maintained at 60 ° C. for 40 seconds and dried to obtain an adhesion-treated polyester core.
  • an adhesive solution the same ethylene propylene gen rubber used in the adhesive rubber layer composition of Production Example 1 dissolved in toluene.
  • An adhesive-treated polyester core is sandwiched between unvulcanized rubber sheets (thickness: 5 mm) made of the above adhesive rubber layer composition, and the resulting product is maintained for 35 minutes at a surface pressure of 3920 kPa and a temperature of 160 ° C. Then, press vulcanization was performed to obtain an adhesive.
  • a rubber-coated canvas was wound around the peripheral surface of a cylindrical molding drum (circumferential length 1200 mm) having a smooth surface, and an unvulcanized rubber sheet made of the composition for an adhesive rubber layer was wound on the rubber coat. Thereafter, the polyester core wire was spirally spun on the unvulcanized rubber sheet. At this time, the canvas was stuck in the bias direction so that the crossing angle between the warp and the weft was 120 ° when it was oriented in the longitudinal direction of the belt.
  • an unvulcanized rubber sheet made of the composition for an adhesive rubber layer was wound around the polyester core wire. Thereafter, the compressed rubber layer composition was wound around an unvulcanized rubber sheet made of the adhesive rubber layer composition to obtain a laminate.
  • the annular object was attached to a first drive system including a drive roll and a driven roll. While the first drive system was running under a predetermined tension (1.17 ⁇ 10 3 N), a plurality of ribs were formed on the surface of the annular object by a grinding wheel. Thereafter, the obtained annular object is further transferred to a second drive system composed of another drive roll and a driven roll. Installed and run, cut to the specified width, made of 3 ribs and 1000mm circumference [0098] [Table 3]
  • the obtained polyester core was embedded in an unvulcanized rubber sheet made of the composition for an adhesive rubber layer and vulcanized in the same manner as in Examples 3 and 4 to obtain an adhesive. Further, a V-ribbed belt was produced in the same manner as in Examples 3 and 4.
  • polyester core wires embedded in the adhesives of Examples 3-4 and Comparative Examples 3-4 1 Three polyester core wires selected every other book were sandwiched between upper and lower chucks, and peeled simultaneously under the peeling conditions of 40 mm between chucks, peeling speed: 100 mm / min, peeling distance: 80 mm, and the adhesive strength was measured. . At the same time, the mode of fracture in the adhesive when the adhesive force was measured was observed. The results are shown in Table 4.
  • the V-ribbed belts of Examples 3 to 4 and Comparative Examples 3 to 4 are driven pulley 11 (diameter 120mm), driven pulley 12 (diameter 120mm), and the questions of these pulleys. It was attached to a benolet drive system (Fig. 3) consisting of an idler pulley 13 (70 mm diameter) and tension pulley 14 (55 mm diameter). The idler pulley 13 was engaged with the back surface of the V-ribbed belts of Examples 3 to 4 and Comparative Examples 3 to 4.
  • the driven pulley load was 16 horsepower
  • the initial tension of the tension pulley was 8 ⁇ 33 X 10 2 N
  • the drive pulley was driven at 4900 rpm.
  • the belt's dynamic life was defined as the belt's running force and the running time until the core wire was exposed from the belt or the rubber layer was cracked. The results are shown in Table 4.
  • DC B latex (trade name: LH430, solid component: 32% by mass, manufactured by Tosohichi Corporation)
  • EPDM rubber latex (trade name: Sepolex EP125 (solid component 51.5% by mass)) manufactured by Sumitomo Seika Co., Ltd. was used, RFL adhesive composition 1 (solid 15% by mass).
  • a peel test sample was obtained in the same manner as in Example 1. The adhesion was measured in the same manner as in Test Example 1 using the obtained peel test sample.
  • the adhesive strength is 1968. 5 N / m, which is inferior to that of Examples 1 and 2 above.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Belt Conveyors (AREA)

Abstract

L'invention concerne une courroie d'entraînement qui peut présenter de hautes performances dynamiques après une longue durée et une courroie, par exemple une courroie transporteuse, qui peut présenter de hautes performances dynamiques après une longue durée. Les courroies comprennent un matériau en caoutchouc et un matériau fibreux, le matériau fibreux étant lié au matériau en caoutchouc. Elles sont caractérisées en ce que le matériau fibreux est constitué d'au moins un type de fibres sélectionné dans le groupe constitué des fibres de polyester, des fibres de coton, des fibres de polyamide, des fibres de vinylon, des fibres de polycétone, des fibres de poly(benzobisoxazole de p-phénylène), des fibres de polyéthylène, des fibres de polyarylène, des fibres de polyéther-éther-cétone, des fibres de verre et des fibres d'aramide et en ce que le matériau fibreux est imprégné d'une composition d'adhésif au résorcinol/formaline/latex contenant à au moins 50 % en masse de la matière solide un ingrédient de latex constitué d'un latex copolymère de 2-chloro-1,3-butadiène et de 2,3-dichloro-1,3-butadiène.
PCT/JP2007/065181 2006-08-22 2007-08-02 Courroies WO2008023556A1 (fr)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO2009037011A1 (fr) * 2007-09-18 2009-03-26 Contitech Antriebssysteme Gmbh Courroie d'entraînement élastique sans fin, en particulier courroie trapézoïdale ou courroie trapézoïdale crantée à perte de tension réduite
CN102277749A (zh) * 2011-06-21 2011-12-14 宁波大成新材料股份有限公司 高强·高模聚乙烯纤维浸胶帆布制备方法
CN103772759A (zh) * 2014-01-17 2014-05-07 中德（扬州）输送工程技术有限公司 一种防撕裂低滚动阻力输送带覆盖胶及其制备方法
JP7471129B2 (ja) 2020-04-02 2024-04-19 三井化学株式会社 エチレン系共重合体組成物およびその用途

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106536973B (zh) * 2014-08-06 2019-02-22 阪东化学株式会社 摩擦传动带及其制造方法、以及带传动装置

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JPS5989375A (ja) * 1982-11-13 1984-05-23 Denki Kagaku Kogyo Kk クロロプレンゴムと繊維の加硫接着における繊維処理用接着剤組成物
JP2006207600A (ja) * 2005-01-24 2006-08-10 Bando Chem Ind Ltd 伝動ベルト

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JPS5989375A (ja) * 1982-11-13 1984-05-23 Denki Kagaku Kogyo Kk クロロプレンゴムと繊維の加硫接着における繊維処理用接着剤組成物
JP2006207600A (ja) * 2005-01-24 2006-08-10 Bando Chem Ind Ltd 伝動ベルト

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009037011A1 (fr) * 2007-09-18 2009-03-26 Contitech Antriebssysteme Gmbh Courroie d'entraînement élastique sans fin, en particulier courroie trapézoïdale ou courroie trapézoïdale crantée à perte de tension réduite
CN102277749A (zh) * 2011-06-21 2011-12-14 宁波大成新材料股份有限公司 高强·高模聚乙烯纤维浸胶帆布制备方法
CN103772759A (zh) * 2014-01-17 2014-05-07 中德（扬州）输送工程技术有限公司 一种防撕裂低滚动阻力输送带覆盖胶及其制备方法
JP7471129B2 (ja) 2020-04-02 2024-04-19 三井化学株式会社 エチレン系共重合体組成物およびその用途

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