WO2017110012A1 - Film imperméable à l'air et procédé de production de bandage pneumatique - Google Patents

Film imperméable à l'air et procédé de production de bandage pneumatique Download PDF

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Publication number
WO2017110012A1
WO2017110012A1 PCT/JP2016/003628 JP2016003628W WO2017110012A1 WO 2017110012 A1 WO2017110012 A1 WO 2017110012A1 JP 2016003628 W JP2016003628 W JP 2016003628W WO 2017110012 A1 WO2017110012 A1 WO 2017110012A1
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WO
WIPO (PCT)
Prior art keywords
air
rubber
rubber composition
thermoplastic resin
resistant film
Prior art date
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Ceased
Application number
PCT/JP2016/003628
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English (en)
Japanese (ja)
Inventor
竜也 遠藤
敏喜 清水
哲也 坪井
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.)
Toyo Tire Corp
Original Assignee
Toyo Tire and Rubber Co 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 Toyo Tire and Rubber Co Ltd filed Critical Toyo Tire and Rubber Co Ltd
Publication of WO2017110012A1 publication Critical patent/WO2017110012A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • 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
    • B60C5/00—Inflatable pneumatic tyres or inner tubes
    • B60C5/12—Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim
    • B60C5/14—Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers

Definitions

  • Embodiments of the present invention relate to an air permeation-resistant film and a pneumatic tire using the same.
  • Patent Document 1 discloses air permeation resistance made of a dynamic cross-linked body of a thermoplastic resin as a continuous phase and an elastomer as a dispersed phase. Sex films have been proposed.
  • This type of air permeation-resistant film particularly a film used for an inner liner, is required to have improved durability.
  • Patent Document 2 discloses that the fatigue resistance is improved by bringing the melt viscosity of the thermoplastic resin and the rubber closer to finely disperse the rubber and increasing the amount of the rubber to reduce the elastic modulus. Therefore, it has been proposed to increase the viscosity by adding a filler or the like to rubber and to blend an appropriate amount of a low viscosity component into the thermoplastic resin. However, it is conceivable that the strength is reduced by adding a low-viscosity component to the thermoplastic resin, and cracks are caused by adding a filler to the rubber.
  • Patent Document 3 discloses that a modified ethylene vinyl alcohol copolymer is used as a resin constituting a continuous phase, and that rubber is highly dispersed as a low modulus viscoelastic material to improve durability. However, it can only be applied to specific polymers.
  • An object of the embodiment of the present invention is to obtain an air-permeable film having excellent durability.
  • the method for producing an air permeable resistant film according to the present embodiment includes a thermoplastic resin, a melt viscosity lower at 230 ° C. than that of the thermoplastic resin, and a vulcanization rate at 200 ° C. of 0.70 dN ⁇ m / min. It includes melt-kneading and dynamically crosslinking the rubber composition as described above to obtain a dynamically crosslinked product having the thermoplastic resin as a continuous phase and the rubber composition as a dispersed phase.
  • the melt viscosity of the rubber composition is a melt viscosity measured excluding the crosslinking agent.
  • the method for manufacturing a pneumatic tire according to the present embodiment uses an air-permeable-resistant film obtained by the manufacturing method as an inner liner or other air permeation suppression layer.
  • thermoplastic resin having a higher melt viscosity than the rubber composition and a rubber composition having a high vulcanization rate, an air-permeable resistant film having excellent durability can be obtained. Can do.
  • the air permeable resistant film according to the present embodiment is composed of a dynamic cross-linked body having a sea-island structure in which a thermoplastic resin is a continuous phase (matrix phase) and a rubber composition is a dispersed phase (domain phase).
  • a thermoplastic resin a high-viscosity resin having a higher melt viscosity at 230 ° C. than the rubber composition is used, and as the rubber composition, the vulcanization rate at 200 ° C. is 0.70 dN ⁇ m / min or more. It is characterized by using a faster one than before.
  • the thermoplastic resin when the melt viscosity of the thermoplastic resin is lower than that of the rubber composition, the thermoplastic resin can be a continuous phase and the rubber composition can be a dispersed phase.
  • the thermoplastic resin has a low viscosity, the durability is generally low and it does not become a highly durable air-permeable film.
  • a general-purpose rubber composition having a low vulcanization rate is used as the rubber composition, the rubber composition becomes a continuous phase at the initial stage of mixing with the thermoplastic resin, and a high shear force necessary for high dispersion is obtained. I can't.
  • the continuous phase and the dispersed phase are unlikely to reverse, and the rubber composition tends to become the continuous phase in the finished composite.
  • the rubber composition is a continuous phase, it is difficult to form as a film and the air permeability resistance is poor.
  • the viscosity of the rubber composition is increased at the initial stage of mixing, so The plastic resin can be a continuous phase. Thereby, sufficient shearing force can be given also to a rubber composition, and a rubber dispersed phase can be refined.
  • a thermoplastic resin having a higher viscosity (higher durability) than that of the conventional one can be used for the continuous phase while making the rubber dispersed phase highly dispersed, high durability can be expressed.
  • thermoplastic resin examples include nylon 6, nylon 66, nylon 46, nylon 11, nylon 12, nylon 610, nylon 612, nylon 6/66 copolymer, and nylon 6/66/610 copolymer.
  • Aliphatic polyamide resin such as coalescence, nylon MXD6, nylon 6T, nylon 6 / 6T copolymer; ethylene-vinyl alcohol copolymer (EVOH), ethylene-vinyl acetate copolymer (EVA), polyvinyl Polyvinyl resins such as alcohol (PVA), polyvinylidene chloride (PVDC), polyvinyl chloride (PVC); polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyethylene isophthalate (PEI), polyarylate (PAR), Polybuchi Polyester resins such as nonaphthalate (PBN); Polynitrile resins such as polyacrylonitrile (PAN), polymethacrylonitrile, acrylonitrile-styrene copolymer, and nylon 6/
  • the thermoplastic resin may be at least one selected from the group consisting of aliphatic polyamide resins and polyvinyl resins, or selected from the group consisting of aliphatic polyamide resins and ethylene-vinyl alcohol copolymers. It may be at least one kind.
  • thermoplastic resin it is preferable to use an air permeable thermoplastic resin having an air permeability coefficient at 80 ° C. of 5 ⁇ 10 13 fm 2 / Pa ⁇ s or less, and imparts excellent air permeability resistance to the film. can do.
  • the air permeability coefficient of the thermoplastic resin may be 0.05 ⁇ 10 13 to 2 ⁇ 10 13 fm 2 / Pa ⁇ s.
  • the air permeability coefficient is a value measured at a test gas: air and at a test temperature: 80 ° C. according to JIS K7126-1 “Plastics—Films and Sheets—Gas Permeability Test Method—Part 1: Differential Pressure Method”. is there.
  • thermoplastic resin forming the continuous phase requires additives such as a plasticizer, a softener, a filler, a reinforcing agent, a processing aid, a stabilizer, and an antioxidant as long as the effects of the present embodiment are not impaired. You may mix
  • NR natural rubber
  • EMR epoxidized natural rubber
  • IR isoprene rubber
  • SBR styrene butadiene rubber
  • BR butadiene rubber
  • NBR nitrile rubber
  • H-NBR hydrogenated nitrile rubber
  • Diene rubber such as hydrogenated styrene butadiene rubber and its hydrogenated rubber
  • EPDM ethylene propylene rubber
  • IIR maleic acid modified ethylene butylene rubber
  • ACM acrylic rubber
  • Halogenated butyl rubber for example, brominated butyl rubber (Br-IIR), chlorinated butyl rubber (Cl-IIR)), chloroprene rubber (CR), halogen-containing rubber such as chlorosulfonated polyethylene; Fluoro rubber, police Fidogomu and the like.
  • halogenated butyl rubber such as butyl rubber (IIR) and brominated butyl rubber (Br-IIR), nitrile rubber (NBR) and hydrogenated nitrile rubber (H-NBR) are selected. It is preferable to use at least one kind.
  • the rubber composition forming the dispersed phase is blended with a crosslinking agent for dynamically crosslinking the rubber component. That is, the rubber composition contains at least a rubber component and a crosslinking agent.
  • the crosslinking agent include vulcanizing agents such as sulfur and sulfur-containing compounds, vulcanization accelerators, and phenol resins.
  • a phenol resin is used from the viewpoint of heat resistance and the like.
  • the phenol resin include resins obtained by condensation reaction of phenols and formaldehyde, and examples thereof include alkylphenol-formaldehyde resins.
  • a halogenated phenol resin such as a brominated alkylphenol-formaldehyde resin.
  • the amount of the crosslinking agent is not particularly limited as long as it can appropriately crosslink the rubber component, but may be 0.1 to 10 parts by mass, or 0.5 to 5 parts by mass with respect to 100 parts by mass of the rubber component. But you can.
  • the rubber composition forming the dispersed phase may contain only the rubber component and the crosslinking agent described above, but in addition to these, the rubber composition generally includes a filler, a softening agent, an anti-aging agent, a processing aid, and the like.
  • Various additives to be blended may be blended.
  • blend a filler from the meaning which eliminates the factor of crack generation as much as possible, for example, it is preferable that it is 20 mass parts or less with respect to 100 mass parts of rubber components, More preferably, it is 10 mass parts or less. Yes, more preferably 5 parts by mass or less.
  • the blending ratio of the thermoplastic resin and the rubber composition is not particularly limited, and is, for example, a mass ratio (thermoplasticity).
  • Resin / rubber composition which may be 90/10 to 30/70, 70/30 to 40/60, or 60/40 to 40/60.
  • thermoplastic resin having a higher melt viscosity at 230 ° C. than the rubber composition is used as the thermoplastic resin. That is, a thermoplastic resin and a rubber composition satisfying ⁇ 1 > ⁇ 2 are used, where ⁇ 1 is the melt viscosity of the thermoplastic resin at 230 ° C. and ⁇ 2 is the melt viscosity of the rubber composition at 230 ° C.
  • the ratio of these melt viscosities satisfies ⁇ 1 / ⁇ 2 ⁇ 1.20, that is, the ratio ⁇ 1 / ⁇ 2 is 1.20 or more, and more preferably the ratio ⁇ 1 / ⁇ 2 Is 1.40 or more, and may be 1.50 or more.
  • the higher the melt viscosity the better the durability of the thermoplastic resin. Therefore, the durability of the air permeation-resistant film can be improved by using a thermoplastic resin having a high melt viscosity.
  • the upper limit of the melt viscosity ratio ⁇ 1 / ⁇ 2 is not particularly limited, and may be 10.0 or less, or 7.0 or less, for example.
  • the melt viscosity ⁇ 1 of the thermoplastic resin is not particularly limited, but is preferably 70 to 400 Pa ⁇ s, more preferably 100 to 300 Pa ⁇ s, and further preferably 150 to 300 Pa ⁇ s from the viewpoint of durability. s.
  • the melt viscosity ⁇ 2 of the rubber composition is not particularly limited as long as it is smaller than the melt viscosity ⁇ 1 of the thermoplastic resin, and may be, for example, 40 to 250 Pa ⁇ s or 50 to 170 Pa ⁇ s.
  • the melt viscosity of a thermoplastic resin can be adjusted with additives, such as the kind of resin, molecular weight, and a plasticizer, for example.
  • the melt viscosity of the rubber composition can be adjusted by, for example, the type and molecular weight of the rubber component, and additives such as softeners and fillers.
  • the melt viscosity is a value measured using a capillary rheometer at a cylinder temperature of 230 ° C. and an extrusion speed of 800 s ⁇ 1 .
  • the melt viscosity ⁇ 1 of the thermoplastic resin is a value measured for the additive containing the additive when the additive is added to the thermoplastic resin as described above. However, the additive does not include a compatibilizer described later. Further, the melt viscosity ⁇ 2 of the rubber composition is a value measured excluding the crosslinking agent.
  • a rubber composition having a vulcanization rate (also referred to as a crosslinking rate) at 200 ° C. of 0.70 dN ⁇ m / min or more is used.
  • the vulcanization rate of the rubber composition is more preferably 0.80 dN ⁇ m / min or more.
  • the upper limit of the vulcanization rate of the rubber composition is not particularly limited, and may be, for example, 2.5 dN ⁇ m / min or less, or 1.7 dN ⁇ m / min or less.
  • rate can be adjusted with the kind and quantity of a crosslinking agent, for example.
  • the vulcanization speed of the rubber composition is a value obtained by measuring the viscosity at a test temperature of 200 ° C. using a rheometer and obtaining a torque increase gradient for 1 minute from the minimum viscosity ML.
  • a compatibilizing agent may be blended together with the thermoplastic resin and the rubber composition.
  • the compatibilizing agent lowers the interfacial tension between the thermoplastic resin and the rubber composition and makes them compatible.
  • a compatibilizing agent as one embodiment, an ethylene-glycidyl (meth) acrylate copolymer (that is, an ethylene-glycidyl methacrylate copolymer and / or an ethylene-glycidyl acrylate copolymer) may be used.
  • the compounding amount of the compatibilizer is not particularly limited, but may be 0.5 to 10 parts by mass with respect to 100 parts by mass of the total amount of the thermoplastic resin and the rubber composition (amount as a polymer excluding additives), It may be 0.5 to 5 parts by mass.
  • the thermoplastic resin and the rubber composition are melt-kneaded and the rubber composition is dynamically crosslinked (TPV) with a crosslinking agent.
  • TPV dynamically crosslinked
  • the timing of addition of the various additives (for example, fillers, crosslinking agents, etc.) to these resin compositions and rubber compositions may be added and mixed in advance before the melt kneading, for example. It may be added inside.
  • a rubber composition (masterbatch) pellet is prepared by adding a crosslinking agent or the like to the rubber component, and the pellet is put into a kneader together with a thermoplastic resin and a compatibilizer, and melt kneaded to operate. Dynamically crosslinked pellets may be obtained by mechanical crosslinking.
  • the kneader used for kneading is not particularly limited, and examples thereof include a twin screw extruder, a screw extruder, a kneader, and a Banbury mixer.
  • the kneading temperature should just be more than the temperature which a thermoplastic resin fuse
  • An air permeation-resistant film can be obtained by forming the dynamic cross-linked product thus obtained into a film.
  • the method of forming the dynamically crosslinked pellets into a film is not particularly limited.
  • a method of forming a normal thermoplastic resin into a film such as extrusion molding or calendar molding, can be used.
  • the air permeation-resistant film according to the present embodiment preferably has an air permeability coefficient at 80 ° C. of 5 ⁇ 10 13 fm 2 / Pa ⁇ s or less, and the weight of the tire is reduced by thinning the inner liner. Can do.
  • the air permeability coefficient may be 0.1 ⁇ 10 13 to 4 ⁇ 10 13 fm 2 / Pa ⁇ s, or may be 0.1 ⁇ 10 13 to 1.0 ⁇ 10 13 fm 2 / Pa ⁇ s.
  • the thickness of the air permeable resistant film is not particularly limited, and may be, for example, 0.02 to 1.0 mm, 0.05 to 0.5 mm, or 0.1 to 0.3 mm.
  • the air permeable resistant film according to the present embodiment is applied to various pneumatic tires such as tires for passenger cars, various automobile tires including heavy load tires such as trucks and buses, and motorcycle tires including bicycles. can do.
  • FIG. 1 is a cross-sectional view of a pneumatic tire 1 according to an embodiment.
  • a pneumatic tire 1 includes a pair of bead portions 2 and 2 that are assembled to a rim, a pair of sidewall portions 3 and 3 that extend outward from the bead portion 2 in the tire radial direction, and the pair of sidewalls. And a tread portion 4 that contacts the road surface provided between the portions 3 and 3.
  • a ring-shaped bead core 5 is embedded in each of the pair of bead portions 2 and 2.
  • a carcass ply 6 using an organic fiber cord is folded around the bead cores 5 and 5 and locked between the left and right bead portions 2 and 2.
  • a belt 7 made of two belt plies using a tire cord such as a steel cord is provided on the outer peripheral side of the tread portion 4 of the carcass ply 6.
  • An inner liner 8 is provided inside the carcass ply 6 over the entire inner surface of the tire.
  • the air permeable resistant film is used as the inner liner 8.
  • the inner liner 8 is bonded to the inner surface of the carcass ply 6 that is a rubber layer on the inner surface of the tire, and more specifically, a topping rubber that covers the cord of the carcass ply 6. Affixed to the inner surface of the layer.
  • an air-permeable film is used as an inner liner, and the inner liner is attached to the outer periphery of the molding drum in a cylindrical shape.
  • a green tire (unvulcanized tire) is produced by attaching a carcass ply on the inner liner and further attaching and inflating each tire member such as a belt, tread rubber, and sidewall rubber.
  • a pneumatic tire is obtained by vulcanizing the green tire in a mold.
  • the air permeation-resistant film is provided on the inner surface side of the carcass ply.
  • the air pressure from the inside of the tire can be prevented and the air pressure of the tire can be maintained, that is, the internal pressure.
  • the air permeation-resistant film can be provided at various positions such as the outer surface side of the carcass ply.
  • IIR Butyl rubber, “IIR268” manufactured by ExxonMobil Chemical ⁇ NBR: Nitrile rubber, "JSR N230S” manufactured by JSR Corporation Nylon-A: Nylon 6/66 copolymer, “Novamid 2010J” manufactured by DSM Nylon-B: Nylon 6/66 copolymer, “Novamid 2020J” manufactured by DSM ⁇ Nylon-C: nylon 6/66 copolymer, “Amilan CM6041XF” manufactured by Toray Industries, Inc.
  • Nylon-D 50 parts by mass of Nylon-A pellets and 50 parts by mass of Nylon-B pellets were dry blended and melted in a twin-screw extruder set at 220 ° C (Plastics Engineering Laboratory Co., Ltd.) Kneaded and pelletized (nylon blend 50/50)
  • Nylon-E 25 parts by mass of Nylon-A pellets and 75 parts by mass of Nylon-B pellets were dry blended and melted in a twin-screw extruder set at 220 ° C (Plastics Engineering Laboratory Co., Ltd.) Kneaded and pelletized (nylon blend 25/75)
  • EVOH-A ethylene-vinyl alcohol copolymer, “Soarnol 3203RB” manufactured by Nippon Synthetic Chemical Industry Co., Ltd.
  • EVOH-B ethylene-vinyl alcohol copolymer, “Soarnol 3212B” manufactured by Nippon Synthetic Chemical Industry Co., Ltd.
  • Compatibilizer “Bond First E” manufactured by Sumitomo Chemical Co., Ltd., ethylene-glycidyl methacrylate copolymer
  • Carbon black “Seast 3” manufactured by Tokai Carbon Co., Ltd.
  • Zinc flower "Zinc flower 3” manufactured by Mitsui Mining & Smelting Co., Ltd.
  • Stearic acid “Lunac S-20” manufactured by Kao Corporation
  • Sulfur “Powder sulfur” manufactured by Tsurumi Chemical Co., Ltd.
  • Vulcanization accelerator “Soxinol CZ” manufactured by Sumitomo Chemical Co., Ltd.
  • Crosslinking agent-1 Alkylphenol-formaldehyde resin, "Tactrol 201” manufactured by Taoka Chemical Co., Ltd.
  • Crosslinking agent-2 Brominated alkylphenol-formaldehyde resin, “Tactrol 201-III” manufactured by Taoka Chemical Co., Ltd.
  • Retarder “Kyowa Mug 150” manufactured by Kyowa Chemical Industry Co., Ltd.
  • evaluation measurement method The evaluation measurement methods in the following examples are as follows.
  • Vulcanization rate The rubber composition mixed in a lab plast mill (manufactured by Toyo Seiki Seisakusho) was tested at 200 ° C. for 60 minutes using a rheometer “MDR2000” (manufactured by Alpha Technology Co., Ltd.). The vulcanization speed was determined from the slope of the torque increase for 1 minute from the minimum viscosity ML.
  • test piece (dumbbell-shaped No. 3 test piece), and use a tensile tester to make the test piece 3 cm between chucks. Then, the film was repeatedly stretched by 50% at a frequency of 5 Hz at an ambient temperature of 40 ° C. The number of test pieces is 10, 50% elongation is repeated 1,000,000 times, and when the number of breaks in the film is 3 or less, the pass is “ ⁇ ”, and when it is 4 or more, it is “fail”. did.
  • melt viscosity of thermoplastic resin and rubber components The melt viscosity at 230 ° C. of the thermoplastic resin and the rubber component and the air permeability coefficient of the thermoplastic resin were as shown in Table 1.
  • the air permeability coefficient of a thermoplastic resin is the value measured about the film shape
  • melt viscosity of the thermoplastic resin is higher than the melt viscosity of the rubber composition ( ⁇ 1 / ⁇ 2 > 1), and the initial vulcanization rate of the rubber composition is 0.70 dN ⁇ m / min or more.
  • the phase image was confirmed by SPM (scanning probe microscope), it is a sea-island structure which uses a thermoplastic resin as a continuous phase and a crosslinked (vulcanized) rubber composition as a dispersed phase. Yes, the dispersed phase was made finer than in Comparative Example 5.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Tires In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Tyre Moulding (AREA)

Abstract

Selon un mode de réalisation, la présente invention concerne un procédé de production d'un film imperméable à l'air consistant à malaxer à l'état fondu et de ce fait à réticuler de manière dynamique une résine thermoplastique, et une composition de caoutchouc ayant une viscosité à l'état fondu inférieure à celle de la résine thermoplastique à 230 °C et une vitesse de vulcanisation de 0,70 dN·m/min ou plus à 200 °C, afin d'obtenir un produit réticulé de manière dynamique, la résine thermoplastique étant dans une phase continue, et la composition de caoutchouc étant dans une phase dispersée. Par conséquent, un film imperméable à l'air présentant une excellente durabilité est obtenu.
PCT/JP2016/003628 2015-12-22 2016-08-05 Film imperméable à l'air et procédé de production de bandage pneumatique Ceased WO2017110012A1 (fr)

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JP2015-250047 2015-12-22
JP2015250047A JP6676366B2 (ja) 2015-12-22 2015-12-22 耐空気透過性フィルム及び空気入りタイヤの製造方法

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JP6909097B2 (ja) * 2017-08-17 2021-07-28 Ｔｏｙｏ Ｔｉｒｅ株式会社 熱可塑性エラストマー組成物、タイヤ用耐空気透過性フィルム、及びこれを用いた空気入りタイヤ
JP6996902B2 (ja) * 2017-08-17 2022-01-17 Ｔｏｙｏ Ｔｉｒｅ株式会社 熱可塑性エラストマー組成物の製造方法、タイヤ用耐空気透過性フィルムの製造方法、及び空気入りタイヤの製造方法
JP7353844B2 (ja) * 2019-07-23 2023-10-02 古河電気工業株式会社 ゴム組成物

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06240010A (ja) * 1993-02-19 1994-08-30 Mitsubishi Petrochem Co Ltd ポリアミド樹脂組成物の調製方法
WO2006057333A1 (fr) * 2004-11-26 2006-06-01 Daikin Industries, Ltd. Composition polymere thermoplastique et son procede de production
WO2007100157A1 (fr) * 2006-03-03 2007-09-07 The Yokohama Rubber Co., Ltd. Composition elastomere, son procede de fabrication et pneumatique l'utilisant
JP2011021146A (ja) * 2009-07-17 2011-02-03 Yokohama Rubber Co Ltd:The 熱可塑性エラストマー組成物の製造方法
JP2013237760A (ja) * 2012-05-14 2013-11-28 Tokyo Univ Of Agriculture & Technology ゴム−ポリオレフィン複合体の製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06240010A (ja) * 1993-02-19 1994-08-30 Mitsubishi Petrochem Co Ltd ポリアミド樹脂組成物の調製方法
WO2006057333A1 (fr) * 2004-11-26 2006-06-01 Daikin Industries, Ltd. Composition polymere thermoplastique et son procede de production
WO2007100157A1 (fr) * 2006-03-03 2007-09-07 The Yokohama Rubber Co., Ltd. Composition elastomere, son procede de fabrication et pneumatique l'utilisant
JP2011021146A (ja) * 2009-07-17 2011-02-03 Yokohama Rubber Co Ltd:The 熱可塑性エラストマー組成物の製造方法
JP2013237760A (ja) * 2012-05-14 2013-11-28 Tokyo Univ Of Agriculture & Technology ゴム−ポリオレフィン複合体の製造方法

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