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WO2021182544A1 - Bandage pneumatique - Google Patents

Bandage pneumatique Download PDF

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Publication number
WO2021182544A1
WO2021182544A1 PCT/JP2021/009656 JP2021009656W WO2021182544A1 WO 2021182544 A1 WO2021182544 A1 WO 2021182544A1 JP 2021009656 W JP2021009656 W JP 2021009656W WO 2021182544 A1 WO2021182544 A1 WO 2021182544A1
Authority
WO
WIPO (PCT)
Prior art keywords
belt
cord
tire
pneumatic tire
layer
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2021/009656
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English (en)
Japanese (ja)
Inventor
山本　雅彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
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 Bridgestone Corp filed Critical Bridgestone Corp
Publication of WO2021182544A1 publication Critical patent/WO2021182544A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • 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
    • 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
    • D02G3/48—Tyre cords
    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/12—Aldehydes; Ketones
    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/152—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen having a hydroxy group bound to a carbon atom of a six-membered aromatic ring

Definitions

  • the present invention relates to a pneumatic tire.
  • Organic fibers such as polyester fibers have a high initial elastic modulus and excellent thermal dimensional stability, and therefore, in the form of filaments, cords, cables, cord fabrics, canvas, etc., reinforce rubber articles such as tires. It is extremely useful as a material.
  • various adhesive compositions have been proposed for improving the adhesiveness between a cord and rubber when these organic fibers are used as a tire cord.
  • an adhesive composition for example, an RFL (resorcin formalin latex) adhesive containing resorcin, formalin, rubber latex and the like is used, and a technique for ensuring adhesive strength by heat-curing the RFL adhesive is known. (See, for example, Patent Documents 1 to 3 and the like).
  • the present invention provides a pneumatic tire in which resorcin is not contained in the adhesive composition coated on the organic fiber cord, the load on the environment is small, and the durability can be improved. With the goal.
  • the gist structure of the present invention is as follows. Equipped with a belt consisting of five or more belt layers, At least one of the belt layers is a spiral belt layer in which the rubberized layer of the belt cord is spirally wound in the tire circumferential direction. At least one of the belt layers is an inclined belt layer in which the belt cord extends inclined with respect to the tire circumferential direction.
  • the belt cord of the belt layer is an organic fiber cord and is The organic fiber cord is a pneumatic tire, characterized in that it is coated with an adhesive composition containing polyphenols and aldehydes.
  • a pneumatic tire that does not contain resorcin in the adhesive composition coated on the organic fiber cord, has a low environmental load, and can improve durability. Can be done.
  • FIG. 1 is a cross-sectional view of a pneumatic tire according to an embodiment of the present invention in the tire width direction.
  • the pneumatic tire is an aircraft pneumatic radial tire and is configured to support the load of the aircraft.
  • the tire 1 has five or more belt layers on the outer side in the tire radial direction of the crown portion of the carcass 3 straddling the pair of bead cores 2a embedded in the pair of bead portions 2 in a toroidal shape.
  • a belt 4 composed of (six layers of belt layers 5a to 5f in the illustrated example) and a tread 5 arranged on the outer side of the belt 4 in the tire radial direction are provided.
  • the tire of this example has a bead core 2a embedded in each pair of bead portions 2.
  • the bead core 2a is composed of an annular cable bead.
  • the bead core 2a has a circular cross section.
  • As the bead wire for example, a high carbon steel wire can be used.
  • the bead filler 2b is arranged on the outer side of the bead core 2a in the tire radial direction.
  • the bead filler 2b has a substantially triangular cross section in which the width in the tire width direction tapers from the inside to the outside in the tire radial direction, but the bead filler 2b has various cross-sectional shapes. Can be done.
  • the bead filler 2b for example, one or more kinds of any known hard rubber can be used.
  • the tire of this example is provided with a carcass 3 (radial carcass) composed of two or more carcass plies.
  • the number of carcass plies is not particularly limited as long as it is two or more, and may be, for example, three to eight or more. In this example, the carcass ply has 6 to 8 layers.
  • the carcass 3 extends so as to straddle the pair of bead cores 2a in a toroidal manner.
  • the carcass has a carcass main body extending so as to straddle the pair of bead cores 2a in a toroidal manner, and a carcass folded portion extending from the carcass main body and folded around the bead core 2a from the inside to the outside in the tire width direction. .. It should be noted that, as appropriate, one or more carcass plies may be made into a down ply consisting of only the carcass main body portion extending so as to straddle the pair of bead cores 2a in a toroidal manner.
  • the tire radial positions of the ends of two or more carcass plies are preferably different from the viewpoint of suppressing the occurrence of failure due to the ends, and on the other hand, they can be the same.
  • an organic fiber cord can be used, for example, a cord made of nylon fiber can be used, or a hybrid cord made by twisting two kinds of organic fiber cords can be used (for example, aramid). Hybrid cord of fiber and nylon fiber).
  • Belt 4 is composed of five or more belt layers.
  • the belt 4 is composed of six belt layers 4a to 4f, and the belt layers 4a, 4b, 4c, 4d, 4e, and 4f are laminated in this order from the inside in the tire radial direction.
  • At least one of the belt layers is a spiral belt layer in which the rubberized layer of the belt cord is spirally wound in the tire circumferential direction.
  • one layer of the belt layer 4a is a spiral belt layer.
  • FIG. 2 is a plan view showing the configuration of the inclined belt layer.
  • At least one of the belt layers is an inclined belt in which the belt cord extends at an inclination with respect to the tire circumferential direction (for example, at an inclination angle of 2 to 40 °). More specifically, as shown in FIG. 2, in this example, at least one layer of the belt layer has a rubber-coated strip member 51 of the belt cord from one tire width direction end to the other tire width direction end.
  • the belt cords of the respective belt layers 4a to 4f are organic fiber cords, and the organic fiber cords are coated with an adhesive composition containing polyphenols and aldehydes.
  • the organic fiber cord comprises at least aramid fibers.
  • the organic fiber cord is a hybrid cord formed by twisting filaments made of two types of organic fibers. Specifically, in this example, the organic fiber cord is a hybrid cord formed by twisting an aramid fiber and a nylon fiber.
  • the description of the organic fiber code such as the description of polyphenols and aldehydes will be described later, and the internal structure of other tires will be described first.
  • the belt structure is not limited to the example of the embodiment shown in FIG. 1, and is composed of five or more belt layers, in which at least one of the belt layers is the above-mentioned spiral belt layer, and of the belt layers. At least one layer is the above-mentioned inclined belt layer (for example, endless belt layer), the belt cord of the belt layer is an organic fiber cord, and the organic fiber cord is coated with an adhesive composition containing polyphenols and aldehydes. It is good if it is done.
  • the width of the five or more belt layers in the tire width direction can be appropriately set, and the magnitude relationship of the widths between the belt layers is not particularly limited.
  • some modifications of the belt structure will be illustrated, but the present invention is not limited to these belt structures.
  • the number of inclined belt layers may be 6 to 9 layers.
  • the carcass cord may be a hybrid cord formed by twisting aramid fibers and nylon fibers.
  • a spiral belt layer may be arranged inside and outside the inclined belt layer (for example, an endless belt layer) in the tire radial direction.
  • a tire having two spiral belt layers A configuration in which four inclined belt layers (for example, endless belt layers) are arranged on the radial outer side, and three spiral belt layers are arranged on the tire radial outer side of the inclined belt layer (for example, endless belt layer). can do.
  • a two-layer inclined belt layer (for example, an endless belt layer) using a belt cord made of aramid fiber is provided on the outer side in the tire radial direction of a six-layer spiral belt layer using a belt cord made of aramid fiber.
  • (v) for example, six inclined belt layers may be arranged outside the one spiral belt layer in the tire radial direction, or (vi) for example, for example.
  • the configuration may be such that four inclined belt layers (for example, endless belt layers) are arranged outside the tire radial direction of the two spiral belt layers, or (vii) the tire radial direction of the six spiral belt layers. It is also possible to have a configuration in which two inclined belt layers (for example, an endless belt layer) are arranged on the outside.
  • the material and the number of carcass ply cords are not particularly limited.
  • the tire 1 has an inner liner (not shown).
  • the inner liner is arranged so as to cover the inner surface of the tire 1.
  • the adhesive composition contains polyphenols as a resin component.
  • polyphenols are water-soluble polyphenols and are not limited as long as they are polyphenols other than resorcin (resorcinol), and the number of aromatic rings and the number of hydroxyl groups can be appropriately selected. .. Further, the polyphenols preferably have two or more hydroxyl groups, and more preferably three or more hydroxyl groups, from the viewpoint of realizing more excellent adhesiveness.
  • the polyphenol or the condensate of the polyphenol is water-soluble in the adhesive composition liquid containing water by containing three or more hydroxyl groups, it can be uniformly distributed in the adhesive composition, so that more excellent adhesiveness can be realized. .. Further, when the polyphenols are polyphenols containing a plurality of (two or more) aromatic rings, two or three hydroxyl groups are present at the ortho, meta or para positions in those aromatic rings, respectively.
  • polyphenols having three or more hydroxyl groups include the following polyphenols.
  • Phloroglucinol Morin (2', 4', 3,5,7-pentahydroxyflavone): Fluorogluside (2,4,6,3,'5'-biphenylpentol):
  • the adhesive composition contains aldehydes as a resin component in addition to the above-mentioned polyphenols. By containing aldehydes in the adhesive composition, high adhesiveness can be realized together with the above-mentioned polyphenols.
  • the aldehydes are not particularly limited and can be appropriately selected depending on the required performance. Derivatives of rudehydrs originating from aldehydes are also included in the range of aldehydes.
  • aldehydes examples include monoaldehydes such as formaldehyde, acetaldehyde, butylaldehyde, achlorine, propionaldehyde, chloral, butylaldehyde, caproaldehyde, and allylaldehyde, and glioxal, malonaldehyde, succinaldehyde, glutaaldehyde, and adipho.
  • aldehydes examples include aliphatic dialdehydes such as aldehydes, aldehydes having an aromatic ring, and dialdehyde starch. These aldehydes may be used alone or in combination of two or more.
  • the aldehydes preferably contain aldehydes having an aromatic ring. This is because better adhesiveness can be obtained.
  • the aldehydes preferably do not contain formaldehyde.
  • "formaldehyde-free" means that the mass content of formaldehyde based on the total mass of aldehydes is less than 0.5% by mass.
  • Aldehydes having an aromatic ring are aromatic aldehydes containing at least one aromatic ring in one molecule and having at least one aldehyde group. Aldehydes having an aromatic ring can form a relatively inexpensive resin that has a low impact on the environment and has excellent mechanical strength, electrical insulation, acid resistance, water resistance, heat resistance, and the like. can. Further, the aldehydes having an aromatic ring preferably have two or more aldehyde groups from the viewpoint of realizing better adhesiveness. By cross-linking and condensing aldehydes with a plurality of aldehyde groups, the degree of cross-linking of the thermosetting resin can be increased, so that the adhesiveness can be further enhanced.
  • aldehydes have two or more aldehyde groups
  • Each aldehyde group can be present at the ortho, meta or para position in one aromatic ring.
  • aldehydes include 1,2-benzenedicarboxardhide, 1,3-benzenedicarboxardhide, 1,4-benzenedicarbaldehyde 1,4-benzenedicarbaldehyde, and 2-hydroxy.
  • Benzene-1,3,5-tricarbaldehyde, a mixture of these compounds and the like can be mentioned.
  • aldehydes having an aromatic ring include not only those having a benzene ring but also heteroaromatic compounds.
  • aldehydes that are heteroaromatic compounds include aldehydes having a furan ring as shown below. (In the formula, X includes O; R represents -H or -CHO.)
  • aldehydes having a furan ring examples include the following compounds.
  • R stands for -H or -CHO;
  • R1, R2 and R3 represent alkyl, aryl, arylalkyl, alkylaryl or cycloalkyl groups, respectively.
  • polyphenols and aldehydes are condensed, and the mass ratio of the polyphenols to the aldehydes having an aromatic ring (content of aldehydes having an aromatic ring / content of polyphenols). ) Is preferably 0.1 or more and 3 or less, and more preferably 0.25 or more and 2.5 or less. This is because a condensation reaction occurs between polyphenols and aldehydes having an aromatic ring, and the hardness and adhesiveness of the resin, which is the product of the condensation reaction, become more suitable.
  • the total content of polyphenols and aldehydes having an aromatic ring in the adhesive composition is preferably 3 to 30% by mass, and more preferably 5 to 25% by mass. This is because better adhesiveness can be ensured without deteriorating workability and the like.
  • the mass ratio and total content of polyphenols and aldehydes having an aromatic ring are the mass (solid content ratio) of the dried product.
  • the adhesive composition preferably further contains an isocyanate compound in addition to the above-mentioned polyphenols and aldehydes.
  • the synergistic effect with polyphenols and aldehydes can greatly enhance the adhesiveness of the adhesive composition.
  • the isocyanate compound is a compound having an action of promoting adhesion to a resin material (for example, a phenol / aldehyde resin obtained by condensing polyphenols and aldehydes) which is an adherend of an adhesive composition. It is a compound having an isocyanate group as a polar functional group.
  • the type of the isocyanate compound is not particularly limited, but is preferably a (blocked) isocyanate group-containing aromatic compound from the viewpoint of further improving the adhesiveness.
  • blocked) isocyanate group-containing aromatics are distributed at positions near the interface between the adherend fiber and the adhesive composition, and an effect of promoting adhesion can be obtained. By this action and effect, the adhesion with the organic cord can be further enhanced.
  • the (blocked) isocyanate group-containing aromatic compound is an aromatic compound having a (blocked) isocyanate group.
  • (blocked) isocyanate group means a blocked isocyanate group or an isocyanate group, and in addition to the isocyanate group, a blocked isocyanate group generated by reacting with a blocking agent for the isocyanate group and a block for the isocyanate group. It contains an isocyanate group that has not reacted with the agent, or an isocyanate group that is generated by dissociating a blocking agent of a blocked isocyanate group.
  • the (blocked) isocyanate group-containing aromatic compound preferably contains a molecular structure in which aromatics are bonded by an alkylene chain, and more preferably contains a molecular structure in which aromatics are bonded to methylene.
  • the molecular structure in which aromatics are bonded by an alkylene chain include a molecular structure found in diphenylmethane diisocyanate, polyphenylene polymethylene polyisocyanate, or a condensate of phenols and formaldehyde.
  • the (blocked) isocyanate group-containing aromatic compound for example, a compound containing an aromatic polyisocyanate and a heat-dissociable blocking agent, diphenylmethane diisocyanate or an aromatic polyisocyanate was blocked with a heat-dissociable blocking agent.
  • a heat-dissociable blocking agent examples thereof include water-dispersible compounds containing components and aqueous urethane compounds.
  • the compound containing an aromatic polyisocyanate and a heat-dissociable blocking agent include a blocked isocyanate compound containing diphenylmethane diisocyanate and a known isocyanate blocking agent.
  • diphenylmethane diisocyanate or polymethylene polyphenyl polyisocyanate is used as a known blocking agent for blocking isocyanate groups. Examples of the reaction product blocked in.
  • the aqueous urethane compound includes an organic polyisocyanate compound ( ⁇ ) having a molecular structure in which aromatics are bonded by an alkylene chain, preferably a molecular structure in which aromatics are bonded to methylene, and a compound having a plurality of active hydrogens ( ⁇ ). ) And a thermally dissociable blocking agent ( ⁇ ) for an isocyanate group.
  • the aqueous urethane compound (F) not only acts as an adhesive improver due to its flexible molecular structure, but also acts as a flexible cross-linking agent to suppress the fluidization of the adhesive at high temperatures. Have.
  • water-based indicates that it is water-soluble or water-dispersible, and “water-soluble” does not necessarily mean completely water-soluble, but is partially water-soluble or has an adhesive composition. It means a substance that does not undergo phase separation in an aqueous solution of the substance.
  • aqueous urethane compound (F) for example, the following general formula (I):
  • A indicates a residue from which the active hydrogen of the organic polyisocyanate compound ( ⁇ ) containing a molecular structure in which aromatics are bonded by an alkylene chain is eliminated, and Y indicates a thermally dissociable block to the isocyanate group.
  • the active hydrogen of the agent ( ⁇ ) indicates the desorbed residue, Z indicates the residue of the compound ( ⁇ ) desorbed, and X indicates the active hydrogen of the compound ( ⁇ ) having a plurality of active hydrogens. It is a desorbed residue, n is an integer of 2 to 4, and p + m is an integer of 2 to 4 (m ⁇ 0.25)), and an aqueous urethane compound is preferable.
  • Examples of the organic polyisocyanate compound ( ⁇ ) containing a molecular structure in which aromatics are bonded by an alkylene chain include methylene diphenyl polyisocyanate and polymethylene polyphenyl polyisocyanate.
  • the compound ( ⁇ ) having a plurality of active hydrogens is preferably a compound having 2 to 4 active hydrogens and having an average molecular weight of 5,000 or less.
  • Examples of such compound ( ⁇ ) include (i) polyhydric alcohols having 2 to 4 hydroxyl groups, and (ii) polyhydric amines having 2 to 4 primary and / or secondary amino groups.
  • the heat dissociable blocking agent ( ⁇ ) for the isocyanate group is a compound capable of liberating the isocyanate group by heat treatment, and examples thereof include known isocyanate blocking agents.
  • compound ( ⁇ ) is a compound having at least one active hydrogen and anionic and / or nonionic hydrophilic groups.
  • Examples of the compound having at least one active hydrogen and an anionic hydrophilic group include aminosulfonic acids such as taurine, N-methyltaurine, N-butyltaurine and sulfanilic acid, and aminocarboxylic acids such as glycine and alanine. Be done.
  • aminosulfonic acids such as taurine, N-methyltaurine, N-butyltaurine and sulfanilic acid
  • aminocarboxylic acids such as glycine and alanine.
  • the content of the isocyanate compound in the adhesive composition is not particularly limited, but is preferably in the range of 5 to 65% by mass, preferably 10 to 45, from the viewpoint of ensuring more reliable and excellent adhesiveness. More preferably, it is by mass%.
  • the content of the isocyanate compound is the mass (solid content ratio) of the dried product.
  • the adhesive composition can substantially further contain rubber latex in addition to the polyphenols, aldehydes and isocyanate compounds described above. This is because the adhesiveness with the rubber member can be further improved.
  • the rubber latex is not particularly limited, and in addition to natural rubber (NR), polyisoprene rubber (IR), styrene-butadiene copolymer rubber (SBR), polybutadiene rubber (BR), ethylene-propylene- Synthetic rubbers such as diene rubber (EPDM), chloroprene rubber (CR), butyl halide rubber, acryloni little-butadiene rubber (NBR), and vinylpyridine-styrene-butadiene copolymer rubber (Vp) can be used.
  • NR natural rubber
  • IR polyisoprene rubber
  • SBR styrene-butadiene copolymer rubber
  • BR polybutadiene rubber
  • EPDM diene rubber
  • CR chloroprene rubber
  • rubber latex is preferably mixed with phenols and aldehydes before blending the isocyanate compound.
  • content of the rubber latex in the adhesive composition is preferably 20 to 70% by mass, more preferably 25 to 60% by mass.
  • the method for producing the adhesive composition for an organic fiber cord is not particularly limited, but for example, a method of mixing and aging raw materials such as the polyphenols, aldehydes, and rubber latex, or a method of mixing polyphenols and aldehydes. After aging by mixing with, a method of further adding rubber latex and aging can be mentioned. When an isocyanate compound is contained, the rubber latex can be added and aged, and then the isocyanate compound can be added.
  • the composition and content of the polycyclic aromatic hydrocarbons, aldehydes, rubber latex and isocyanate compound are the same as those described in the above-mentioned adhesive composition.
  • the tire of the present invention has an organic fiber cord coated with an adhesive composition, and the organic fiber cord coated with the adhesive composition is adhered to a rubber member such as a coated rubber to be rubber. -Forms an organic fiber cord composite. Since the obtained rubber-organic fiber cord composite uses the above-mentioned adhesive composition, the burden on the environment is small.
  • the rubber-organic fiber cord composite can be used as, for example, the carcass ply 30 and the belt reinforcing layer 50. Among these, the rubber-organic fiber cord composite is preferably used for at least one of the carcass and the belt reinforcing layer.
  • the organic fiber cord coated with the adhesive composition can reduce the load on the environment and more effectively exhibit the excellent adhesiveness between the organic fiber and the rubber member.
  • the adhesive composition may cover at least a part of the organic fiber cord, but it is adhered from the viewpoint that the adhesiveness between the rubber and the organic fiber cord can be further improved. It is preferable that the agent composition is coated on the entire surface of the organic fiber cord.
  • the material of the organic fiber cord is not particularly limited and can be appropriately selected depending on the intended use.
  • an aliphatic polyamide fiber cord such as polyester, 6-nylon, 6,6-nylon, 4,6-nylon, a polyketone fiber cord, and a synthetic resin represented by an aromatic polyamide fiber cord typified by paraphenylene terephthalamide. It can be used for textile materials.
  • the organic fiber cord can be formed, for example, with a monofilament or a stranded wire.
  • the organic fiber cord is a hybrid cord made by twisting filaments made of two types of organic fibers from the viewpoint of achieving both low-speed and high-temperature steering stability and high-speed durability at a high level. preferable. Further, from the viewpoint of further improving high-speed durability, the hybrid cord preferably has a heat shrinkage stress (cN / dtex) at 177 ° C. of 0.20 cN / dtex or more, and is 0.25 to 0.40 cN / dtex. It is more preferable that it is within the range of.
  • the hybrid cord has a tensile elastic modulus of 60 cN / dtex or less at 1% strain at 25 ° C., particularly 35 to 50 cN / dtex. It is preferable that the tensile elastic modulus at 3% strain at 25 ° C. is 30 cN / dtex or more, particularly 45 to 70 cN / dtex.
  • the two types of organic fibers used in the hybrid cord are not particularly limited, but rayon, lyocell and the like can be mentioned as highly rigid organic fibers, and polyester and the like can be mentioned as organic fibers having a high heat shrinkage rate.
  • polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polytrimethylene terephthalate (PTT), nylon, polyketone (PK) and the like can be mentioned. More preferably, a combination of rayon or lyocell and nylon can be used.
  • a method of adjusting the heat shrinkage stress and tensile elastic modulus of the hybrid cord using these organic fibers there is a method of controlling the tension at the time of the dip treatment. For example, the dip treatment is performed while applying a high tension. Therefore, the value of the heat shrinkage stress of the cord can be increased.
  • each organic fiber has a unique range of physical characteristics, by controlling the dip treatment conditions, the physical properties can be adjusted within that range to obtain a hybrid cord having desired physical properties.
  • the organic fiber cord is preferably a single wire cord having no weft. By not having the weft, it is possible to suppress a decrease in fatigue resistance due to rubbing between the warp and the weft.
  • the pneumatic tire of the present embodiment first has an organic fiber cord coated with an adhesive composition containing polyphenols and aldehydes (used for the belt cord in this example).
  • the adhesive composition coated on the belt cord does not contain resorcin, the load on the environment is small, and high adhesiveness between the cord and the rubber can be achieved.
  • the inclined belt layer is used for at least one of the five or more belt layers, the tag effect can be obtained.
  • the endless belt layer is used as the inclined belt layer, it is possible to suppress a failure caused by the end of the belt cord and improve the durability of the tire.
  • the spiral belt layer is used for at least one of the five or more belt layers, the diameter growth can be suppressed.
  • the number of spiral belt layers is preferably 1 to 7.
  • the number of spiral belt layers is preferably 1 to 7.
  • the number of spiral belt layers is increased.
  • the spiral belt layer is arranged in the innermost layer in the tire radial direction among the belt layers.
  • the number of inclined belt layers is preferably 1 to 7.
  • the number of inclined belt layers is preferably 1 to 7.
  • the number of inclined belt layers is small (for example, one layer or two layers).
  • the tire of the present invention is preferably for an aircraft.
  • the present invention is not limited to the above embodiments.
  • the combination of the belt structure and the carcass structure can be arbitrary.
  • the tire of the present invention can be molded by steam vulcanization or electric vulcanization.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Tires In General (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

Ce bandage pneumatique comprend une ceinture qui a au moins cinq couches de ceinture, au moins l'une des couches de ceinture étant une couche de courroie en spirale dans laquelle une couche caoutchoutée de câble de ceinture est enroulée de manière à former une spirale dans la direction circonférentielle du pneumatique, au moins l'une des couches de ceinture étant une couche de ceinture inclinée dans laquelle le câble de ceinture s'étend de manière inclinée par rapport à la direction circonférentielle du pneumatique et le câble de ceinture des couches de ceinture étant un câble de fibre organique qui est revêtu d'une composition adhésive qui comprend un polyphénol et un aldéhyde.
PCT/JP2021/009656 2020-03-11 2021-03-10 Bandage pneumatique Ceased WO2021182544A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020042226A JP7372857B2 (ja) 2020-03-11 2020-03-11 空気入りタイヤ
JP2020-042226 2020-03-11

Publications (1)

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WO2021182544A1 true WO2021182544A1 (fr) 2021-09-16

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JP (1) JP7372857B2 (fr)
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WO2006035940A1 (fr) * 2004-09-30 2006-04-06 Bridgestone Corporation Pneumatique radial
JP2006111072A (ja) * 2004-10-13 2006-04-27 Bridgestone Corp 空気入りラジアルタイヤおよびその製造方法
JP2006224729A (ja) * 2005-02-15 2006-08-31 Bridgestone Corp 空気入りラジアルタイヤ
JP2007283827A (ja) * 2006-04-13 2007-11-01 Bridgestone Corp 航空機用タイヤおよびそれの製造方法
JP2008087243A (ja) * 2006-09-29 2008-04-17 Bridgestone Corp 空気入りタイヤ
JP2009046116A (ja) * 2007-07-20 2009-03-05 Sumitomo Rubber Ind Ltd 空気入りタイヤ
WO2012112240A1 (fr) * 2011-02-17 2012-08-23 Milliken & Company Composition d'adhérence et matières et articles textiles traités avec celle-ci
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JP2014528970A (ja) * 2011-08-04 2014-10-30 コンパニー ゼネラール デ エタブリッスマン ミシュラン ポリアルデヒドとフロログルシノールをベースとする水性接着剤組成物
JP2016528337A (ja) * 2013-07-16 2016-09-15 カンパニー ジェネラレ デ エスタブリシュメンツ ミシュラン バイオ系由来のアルデヒドとポリフェノールの主成分を含む水性接着剤組成物
JP2017512262A (ja) * 2014-02-06 2017-05-18 コンパニー ゼネラール デ エタブリッスマン ミシュラン 芳香族アルデヒドとポリフェノールを含有する接着組成物によって接着性を付与した少なくとも１本の鋼補強要素で補強したゴム複合体
CN107653677A (zh) * 2017-11-04 2018-02-02 杨廷川 一种芳纶纤维表面处理剂
WO2019117010A1 (fr) * 2017-12-13 2019-06-20 株式会社ブリヂストン Pneumatique
JP2019518087A (ja) * 2016-04-01 2019-06-27 コンパニー ゼネラール デ エタブリッスマン ミシュラン 熱硬化性樹脂及びラテックスを含む水性接着剤組成物

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004284375A (ja) * 2003-03-19 2004-10-14 Bridgestone Corp 高速重荷重用空気入りラジアルタイヤ
WO2006035940A1 (fr) * 2004-09-30 2006-04-06 Bridgestone Corporation Pneumatique radial
JP2006111072A (ja) * 2004-10-13 2006-04-27 Bridgestone Corp 空気入りラジアルタイヤおよびその製造方法
JP2006224729A (ja) * 2005-02-15 2006-08-31 Bridgestone Corp 空気入りラジアルタイヤ
JP2007283827A (ja) * 2006-04-13 2007-11-01 Bridgestone Corp 航空機用タイヤおよびそれの製造方法
JP2008087243A (ja) * 2006-09-29 2008-04-17 Bridgestone Corp 空気入りタイヤ
JP2009046116A (ja) * 2007-07-20 2009-03-05 Sumitomo Rubber Ind Ltd 空気入りタイヤ
WO2012112240A1 (fr) * 2011-02-17 2012-08-23 Milliken & Company Composition d'adhérence et matières et articles textiles traités avec celle-ci
JP2014525973A (ja) * 2011-08-04 2014-10-02 コンパニー ゼネラール デ エタブリッスマン ミシュラン ポリアルデヒドとポリフェノールをベースとする水性接着剤組成物
JP2014528970A (ja) * 2011-08-04 2014-10-30 コンパニー ゼネラール デ エタブリッスマン ミシュラン ポリアルデヒドとフロログルシノールをベースとする水性接着剤組成物
JP2016528337A (ja) * 2013-07-16 2016-09-15 カンパニー ジェネラレ デ エスタブリシュメンツ ミシュラン バイオ系由来のアルデヒドとポリフェノールの主成分を含む水性接着剤組成物
JP2017512262A (ja) * 2014-02-06 2017-05-18 コンパニー ゼネラール デ エタブリッスマン ミシュラン 芳香族アルデヒドとポリフェノールを含有する接着組成物によって接着性を付与した少なくとも１本の鋼補強要素で補強したゴム複合体
JP2019518087A (ja) * 2016-04-01 2019-06-27 コンパニー ゼネラール デ エタブリッスマン ミシュラン 熱硬化性樹脂及びラテックスを含む水性接着剤組成物
CN107653677A (zh) * 2017-11-04 2018-02-02 杨廷川 一种芳纶纤维表面处理剂
WO2019117010A1 (fr) * 2017-12-13 2019-06-20 株式会社ブリヂストン Pneumatique

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