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WO2000078562A1 - Pneumatique peu bruyant - Google Patents

Pneumatique peu bruyant Download PDF

Info

Publication number
WO2000078562A1
WO2000078562A1 PCT/JP1999/003308 JP9903308W WO0078562A1 WO 2000078562 A1 WO2000078562 A1 WO 2000078562A1 JP 9903308 W JP9903308 W JP 9903308W WO 0078562 A1 WO0078562 A1 WO 0078562A1
Authority
WO
WIPO (PCT)
Prior art keywords
rubber
base resin
tire
active ingredient
silent
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/JP1999/003308
Other languages
English (en)
Japanese (ja)
Inventor
Yasuyuki Ohira
Mitsuo Hori
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.)
Shishiai KK
Original Assignee
Shishiai KK
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 Shishiai KK filed Critical Shishiai KK
Priority to PCT/JP1999/003308 priority Critical patent/WO2000078562A1/fr
Publication of WO2000078562A1 publication Critical patent/WO2000078562A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • 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
    • B60C19/00—Tyre parts or constructions not otherwise provided for
    • B60C19/002—Noise damping elements provided in the tyre structure or attached thereto, e.g. in the tyre interior

Definitions

  • the present invention relates to a silent tire for an automobile in which noise during running is reduced.
  • an automobile tire 1 has a tread portion 2 on an outer surface that comes into contact with a road surface, a force portion 9 on an inner surface side of the tread portion 2, a breaker belt portion 3, and a radial ply 4. Or an inner layer made of a bias ply or the like.
  • the tread portion 2 is formed in an annular shape having a substantially U-shaped cross section, and a rib portion 6 including a beat wire 5 is formed at both ends thereof so that the rib portion 6 is fitted into the rim flange 8 of the wheel 7. It has become.
  • Such tires are required to have various performances such as abrasion resistance, wet braking performance, and rolling resistance.However, when a vehicle is running, it is caused by vibration or air bombing that occurs when the tire tread surface comes into contact with the road surface. There is a problem that noise is generated inside and outside the vehicle. Conventionally, various proposals have been made for the purpose of preventing such a problem, that is, noise during traveling. For example, Japanese Patent Application Laid-Open No. 1-254411 discloses that by providing a layer of a foamed rubber composition having a foaming rate of 150% or more inside a tire, the tire characteristics are not impaired, and the tire is manufactured with a low performance. Proposals have been made to reduce noise. However, even such an attempt did not achieve the noise reduction effect enough to sufficiently solve the above problem, and an effective solution was required. An object of the present invention is to provide a silent vehicle tire having reduced noise during traveling. It is the purpose. Disclosure of the invention
  • the silent tire according to the present invention is characterized by including a damping material in which an active component that increases the amount of dipole moment in the base resin is mixed with the base resin.
  • the damping material contained in the tire reliably attenuates noises that enter and exit the vehicle due to vibration or air bombing generated when the tire tread surface contacts the road surface. It is like that.
  • FIG. 1 is a perspective view showing one embodiment of the silent tire of the present invention.
  • FIG. 2 is an enlarged sectional view showing another embodiment of the silent tire of the present invention.
  • FIG. 3 is a schematic diagram showing a dipole in the base resin.
  • Fig. 4 is a schematic diagram showing the state of the dipole in the base resin when vibration energy is applied.
  • FIG. 5 is a schematic diagram showing a state of a dipole in a base resin when an active ingredient is blended.
  • FIG. 6 is a schematic diagram showing a test device for measuring a noise level during running of the tires of the example and the comparative example.
  • FIG. 7 is a graph showing the noise level (d B A) during running for the tires of the example and the comparative example at each frequency.
  • FIG. 8 is a perspective view showing the structure of a conventional general tire. BEST MODE FOR CARRYING OUT THE INVENTION
  • This silent tire is for an automobile, and includes a base resin and a vibration damping material in which an active component that increases the amount of dipole moment in the base resin is blended.
  • Base resins include polyvinyl chloride (PVC), polyethylene (PE), chlorinated polyethylene (CPE), polypropylene (PP), ethylene-vinyl acetate copolymer, polymethyl acrylate (PMMA), polyvinylidene fluoride, Polymers such as polyisoprene (IP), polystyrene (PS), styrene-butadiene-acrylonitrile copolymer (ABS), styrene-acrylonitrile copolymer (AS), polycarbonate, or natural rubber (NR), styrene Halogenated rubbers such as butadiene rubber (SBR), butadiene rubber (BR), butyl rubber, isobutylene isoprene rubber (PVC), polyethylene (PE), chlorinated polyethylene (CPE), polypropylene (
  • FIG. 3 shows an arrangement state of the dipole 32 inside the base resin 31 before the vibration energy is transmitted. It can be said that the arrangement state of the dipole 32 is in a stable state. However, when vibration energy is transmitted to this, displacement occurs in the dipoles 32 existing inside the base resin 31, and as shown in FIG. Will be placed in an unstable state, and each dipole 32 will try to return to a stable state as shown in FIG. At this time, energy is consumed.
  • the base resin When selecting the base resin, it may be appropriately determined according to the application site of the tire, for example, a tread portion, a belt portion, a radial ply or a bias ply, that is, in consideration of the performance required for the application site. It is desirable to consider the magnitude of the dipole moment inside the molecule. It is also good to consider the size and shape of the application area, as well as the handleability, moldability, availability, temperature performance (heat resistance and cold resistance), weather resistance, and price of the base resin.
  • the active component is a component that dramatically increases the amount of dipole moment in the base resin, and the active component itself has a large dipole moment, or the active component itself has a small dipole moment.
  • the amount of the dipole moment generated in the base resin 31 under a predetermined temperature condition and the magnitude of the energy can be adjusted by blending the active ingredient into the base resin 31 as shown in FIG. It will increase by a factor of 3 or 10 below.
  • the energy consumption due to the restoring action of the dipole 32 when the above-mentioned energy is added also increases drastically, and vibration damping performance far exceeding the prediction is produced.
  • active ingredients that induce such effects include N, N-dicyclohexylbenzothiazyl-2-sulfenamide (DCHBSA), 2-mercaptobenzothiazole (MBT), dibenzothiazylsulfide (MBTS), Cyclohexyl benzothiaziru 2-sulfenamide (CBS), N-tert
  • BVS N-oxyxeti —Sulfenamide
  • ⁇ BS N-oxyxeti —Sulfenamide
  • DPBS benzothiazyl 2-sulfenamide
  • benzotriazole with an azole group bonded to the benzene ring as the mother nucleus, to which a phenyl group is bonded.
  • the amount of dipole moment in the above-mentioned active ingredient is variously different depending on the type of the active ingredient, similarly to the amount of dipole moment in the base resin. Even when the same active component is used, the amount of dipole moment generated in the base resin changes depending on the temperature when vibration energy is applied. The amount of dipole moment also changes depending on the magnitude of the vibration energy applied to the base resin. For this reason, it is desirable to select and use the active component that gives the largest amount of the dipole moment in consideration of the temperature and energy at the time of application. In deciding the active ingredient to be blended in the base resin, it is good to select the one with a similar value in consideration of the compatibility between the active ingredient and the base resin, that is, the SP value.
  • the compounding amount is 10 to 400 parts by weight based on 100 parts by weight of the base resin. That is, if the amount of the active ingredient is less than 10 parts by weight, the sufficient effect of dramatically increasing the amount of the dipole moment in the base resin cannot be obtained. If the amount is more than 0 parts by weight, an increase in the amount of dipole moment cannot be expected by the increased amount even if the amount is increased, and furthermore, there is a risk of causing a disadvantage that the formability is deteriorated.
  • at least two or more active ingredients having different glass transition points can be blended into the base resin to extend the temperature range in which vibration absorption performance is exhibited. It is.
  • the above-mentioned vibration damping material is filled with an inorganic filler such as my flakes, glass pieces, glass fiber, carbon fiber, calcium carbonate, barite, precipitated barium sulfate, etc. for the purpose of further improving the vibration damping performance.
  • the inorganic filler is preferably contained in a proportion of 100 to 100 parts by weight based on 100 parts by weight of the base resin.
  • the vibration damping performance is not sufficiently improved. Even if the amount exceeds 100 parts by weight, adverse effects may occur if filling cannot be actually performed or mechanical strength decreases.
  • anti-oxidants, reinforcing agents and reinforcement Agents, antistatic agents, flame retardants, lubricants, foaming agents, coloring agents, and the like are added to the above components.
  • the silent tire of the present invention contains the above-described vibration damping material. As a preferred mode, as shown in FIG.
  • the tread portion 12 constituting the tire 11 and the inner surface thereof
  • the component itself of the tire 11 such as the carcass part 19, the breaker belt part 13, and the radial ply 14 may be formed of the damping material.
  • the tread portion 12 is a rubber layer composed of a mixture of SBR and BR or a mixture of NR and BR mixed with carbon black depending on the type of tire, and the active ingredient is compounded in these rubber materials. This gives the tread portion 12 itself vibration damping properties.
  • the tire performance such as abrasion resistance, wet damping property and rolling resistance may be impaired.
  • the tread portion 12 has a two-layer structure of a cap tread 12a and an inner tread 12b, and the inner tread 12b at the inner side is made of the above-described vibration damping material.
  • the carcass portion 19 is formed by laminating a plurality of layers each having a rubber layer on the upper surface of a bamboo cloth, and the carcass portion 19 itself is compounded by mixing an active ingredient into the rubber material constituting the rubber layer. It gives vibration damping properties to In this case, depending on the amount of the active ingredient, sufficient care must be taken because the strength may be reduced and the function of withstanding the load, impact and air pressure received by the tire may be impaired.
  • the breaker belt portion 13 is disposed between the tread portion 12 and the carcass portion 19 to mitigate an external impact, and cracks and scratches generated in the tread portion 12 are directly applied to the carcass portion 19. It is a part that has the function of preventing the influence, but this belt part 13 also has a rubber layer on the upper surface of It is a combination. Also in the case of the belt portion 13, the active material is blended into the rubber material constituting the rubber layer to impart vibration damping properties to the belt portion 13 itself.
  • the tire component itself is made of the damping material have been described above. However, the present invention is not limited to this, and the tire can be freely changed, for example, a plurality of tire components are made of the damping material.
  • the damping material is formed into a sheet, and the damping sheet 20 is attached to the tread portion 1.
  • the damping sheet 20 is attached to the tread portion 1.
  • it can be applied to the tire as a part separate from the constituent parts of the tire 11 by bonding to the inner surface side of the tire 2.
  • the vibration damping sheet since it is only necessary to bond the vibration damping sheet to the inner surface of the tread portion 12, there is the simplicity that a commercially available tire can be used as it is.
  • the vibration damping sheet 20 was adhered to the inner surface of the tread portion 12 with an adhesive.
  • the tire 11 is rotatably supported by the support 23, and the tire 11 is placed on a rotating roller 21 provided with irregularities on its surface, and the rotating roller is rotated to rotate the tire 11 and
  • the noise level (dBA) was picked up by a sound level meter. The results are shown in FIG. The noise was measured at a temperature of 25 ° C and a tire rotation speed of 20 rpm. For comparison, a similar experiment was carried out for a tire without a vibration damping sheet (comparative example), The sound level was measured and also shown in Figure 7.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Cette invention concerne un pneumatique d'automobile aux excellentes caractéristiques d'amortissement. Ce pneumatique se caractérise en ce que sa résine de base renferme un matériau amortisseur comprenant un élément actif conçu pour accroître le moment dipolaire de ladite résine.
PCT/JP1999/003308 1999-06-21 1999-06-21 Pneumatique peu bruyant Ceased WO2000078562A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1999/003308 WO2000078562A1 (fr) 1999-06-21 1999-06-21 Pneumatique peu bruyant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1999/003308 WO2000078562A1 (fr) 1999-06-21 1999-06-21 Pneumatique peu bruyant

Publications (1)

Publication Number Publication Date
WO2000078562A1 true WO2000078562A1 (fr) 2000-12-28

Family

ID=14236028

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1999/003308 Ceased WO2000078562A1 (fr) 1999-06-21 1999-06-21 Pneumatique peu bruyant

Country Status (1)

Country Link
WO (1) WO2000078562A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005104314A (ja) * 2003-09-30 2005-04-21 Tokai Rubber Ind Ltd 防音タイヤ
WO2005115769A1 (fr) * 2004-05-25 2005-12-08 Bridgestone Corporation Pneumatique
GB2441048A (en) * 2006-08-16 2008-02-20 Glassflake Ltd A vehicle tyre containing a filler including glass flake
JP2008049749A (ja) * 2006-08-22 2008-03-06 Sumitomo Rubber Ind Ltd 空気入りタイヤ
US7677284B2 (en) * 2004-12-01 2010-03-16 Sumitomo Rubber Industries, Ltd. Pneumatic tire with tread tape radially inside carcass and method of manufacturing the same
JP2017105270A (ja) * 2015-12-08 2017-06-15 東洋ゴム工業株式会社 空気入りタイヤ
US10632790B2 (en) 2014-09-12 2020-04-28 Bridgestone Corporation Pneumatic tire
CN115891508A (zh) * 2022-11-02 2023-04-04 中智途瑞轮胎科技(山东)有限公司 一种静音自密封轮胎用橡胶组合物及制备方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04213342A (ja) * 1990-08-08 1992-08-04 Sumitomo Chem Co Ltd ゴム組成物
JPH04365605A (ja) * 1990-09-14 1992-12-17 Honda Motor Co Ltd 空気入りタイヤ
JPH0693134A (ja) * 1992-07-31 1994-04-05 Sumitomo Chem Co Ltd 優れたグリップ性能と転動抵抗を有するゴム組成物およびその製造方法
JPH06145422A (ja) * 1992-11-12 1994-05-24 Yokohama Rubber Co Ltd:The タイヤ用ゴム組成物
JPH09302139A (ja) * 1996-05-10 1997-11-25 Cci Corp 制振材
JPH107845A (ja) * 1996-06-28 1998-01-13 Cci Corp 制振材料
JPH10139933A (ja) * 1996-11-07 1998-05-26 Cci Corp 防振材料

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04213342A (ja) * 1990-08-08 1992-08-04 Sumitomo Chem Co Ltd ゴム組成物
JPH04365605A (ja) * 1990-09-14 1992-12-17 Honda Motor Co Ltd 空気入りタイヤ
JPH0693134A (ja) * 1992-07-31 1994-04-05 Sumitomo Chem Co Ltd 優れたグリップ性能と転動抵抗を有するゴム組成物およびその製造方法
JPH06145422A (ja) * 1992-11-12 1994-05-24 Yokohama Rubber Co Ltd:The タイヤ用ゴム組成物
JPH09302139A (ja) * 1996-05-10 1997-11-25 Cci Corp 制振材
JPH107845A (ja) * 1996-06-28 1998-01-13 Cci Corp 制振材料
JPH10139933A (ja) * 1996-11-07 1998-05-26 Cci Corp 防振材料

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005104314A (ja) * 2003-09-30 2005-04-21 Tokai Rubber Ind Ltd 防音タイヤ
WO2005115769A1 (fr) * 2004-05-25 2005-12-08 Bridgestone Corporation Pneumatique
JPWO2005115769A1 (ja) * 2004-05-25 2008-03-27 株式会社ブリヂストン 空気入りタイヤ
JP4651036B2 (ja) * 2004-05-25 2011-03-16 株式会社ブリヂストン 空気入りタイヤ
US7677284B2 (en) * 2004-12-01 2010-03-16 Sumitomo Rubber Industries, Ltd. Pneumatic tire with tread tape radially inside carcass and method of manufacturing the same
GB2441048A (en) * 2006-08-16 2008-02-20 Glassflake Ltd A vehicle tyre containing a filler including glass flake
GB2441048B (en) * 2006-08-16 2009-01-07 Glassflake Ltd Vehicle tyres
JP2008049749A (ja) * 2006-08-22 2008-03-06 Sumitomo Rubber Ind Ltd 空気入りタイヤ
US10632790B2 (en) 2014-09-12 2020-04-28 Bridgestone Corporation Pneumatic tire
JP2017105270A (ja) * 2015-12-08 2017-06-15 東洋ゴム工業株式会社 空気入りタイヤ
CN115891508A (zh) * 2022-11-02 2023-04-04 中智途瑞轮胎科技(山东)有限公司 一种静音自密封轮胎用橡胶组合物及制备方法
CN115891508B (zh) * 2022-11-02 2023-12-19 中智途瑞轮胎科技(山东)有限公司 一种静音自密封轮胎用橡胶组合物及制备方法

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