JP6879315B2 - タイヤ用積層体および空気入りタイヤ - Google Patents
タイヤ用積層体および空気入りタイヤ Download PDFInfo
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- JP6879315B2 JP6879315B2 JP2019010506A JP2019010506A JP6879315B2 JP 6879315 B2 JP6879315 B2 JP 6879315B2 JP 2019010506 A JP2019010506 A JP 2019010506A JP 2019010506 A JP2019010506 A JP 2019010506A JP 6879315 B2 JP6879315 B2 JP 6879315B2
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- rubber
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- nylon
- tire
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- 239000002904 solvent Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000011191 terminal modification Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- ICJGKYTXBRDUMV-UHFFFAOYSA-N trichloro(6-trichlorosilylhexyl)silane Chemical compound Cl[Si](Cl)(Cl)CCCCCC[Si](Cl)(Cl)Cl ICJGKYTXBRDUMV-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
-
- 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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L15/00—Compositions of rubber derivatives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Laminated Bodies (AREA)
Description
得られたタイヤ用積層体のフィルム層と接着ゴム層とを、互いに反対方向(180°)に引っ張ったときの剥離力を測定した。得られた結果は、標準例1の値を100とする指数として、表1〜2の「剥離強度」の欄に示した。この指数値が大きいほど剥離力が大きく、フィルム層と接着ゴム層との接着性に優れることを意味する。
各空気入りタイヤを標準リムに組み付けて、室内ドラム試験機(ドラム径:1707.6mm)を用いて、ISO28580に準拠して、空気圧210kPa、荷重4.82kN、速度80km/hの条件で転がり抵抗を測定した。評価結果は、測定値の逆数を用い、標準例1の値を100とする指数で示した。この指数値が大きいほど転がり抵抗が低く、低燃費性能に優れることを意味する。
各空気入りタイヤを標準リムに組み付けて、試験車両に装着し、空気圧を230kPaとし、操縦安定性についてテストドライバーによる官能試験を実施した。評価結果は、標準例1を100とする指数にて示した。この指数値が大きいほど操縦安定性が優れていることを意味する。
各空気入りタイヤを標準リムに組み付けて、室内ドラム試験機(ドラム径:1707mm)を用いて、JIS D‐4230に準拠して、JATMA 2018年版規定荷重耐久性試験終了後に、5時間ごとに荷重を20%ずつ増加して、タイヤが破壊するまでの走行距離を測定した。評価結果は、標準例1の測定値を100とする指数で示した。この指数値が大きいほど耐久性に優れることを意味する。
・NR:天然ゴム、SIR‐20
・BR:ブタジエンゴム、JSR社製BR01
・変性BR1:末端変性ブタジエンゴム、JSR社製 BR54(ガラス転移温度Tg:−107℃、官能基:シラノール基、分子量分布Mw/Mn=2.5)
・変性BR2:下記の方法で合成した末端変性ブタジエンゴム(ガラス転移温度Tg:−93℃、官能基:ポリオルガノシロキサン基、分子量分布は下記を参照)
・変性BR3:末端変性ブタジエンゴム、日本ゼオン社製 Nipol BR1250H(ガラス転移温度Tg:−96℃、官能基:N−メチルピロリドン基、分子量分布Mw/Mn=1.1)
・CB:カーボンブラック、東海カーボン社製 シーストV(窒素吸着比表面積N2 SA:27m2 /g)
・ステアリン酸:日新理化社製
・アロマオイル:昭和シェル石油社製「デソレックス3号」
・酸化亜鉛:正同化学工業社製 酸化亜鉛3種
・縮合体:変性レゾルシン・ホルムアルデヒド縮合体、住友化学工業社製スミカノール620
・メチレンドナー:田岡化学工業社製 スミカノール507AP
・硫黄:5%油展処理硫黄
・加硫促進剤:大内新興化学工業社製 ノクセラーDM
攪拌機付きオートクレーブに、窒素雰囲気下、シクロヘキサン5670g、1,3‐ブタジエン700gおよび、テトラメチルエチレンジアミン0.17mmolを仕込んだ後、シクロヘキサンと1,3‐ブタジエンとに含まれる重合を阻害する不純物の中和に必要な量のn‐ブチルリチウムを添加し、更に、重合反応に用いる分のn−ブチルリチウムを8.33mmol加えて、50℃で重合を開始した。重合を開始してから20分経過後に、1,3‐ブタジエン300gを30分間かけて連続的に添加した。重合反応中の最高温度は80℃であった。連続添加終了後、更に15分間重合反応を継続し、重合転化率が95%から100%の範囲になったことを確認してから、少量の重合溶液をサンプリングした。サンプリングした少量の重合溶液は、過剰のメタノールを添加して反応停止した後、風乾して、重合体を取得し、ゲルパーミエーションクロマトグラフィー(GPC)分析の試料とした。その試料を用いて、重合体(活性末端を有する共役ジエン系重合体鎖に該当)のピークトップ分子量および分子量分布を測定したところ、それぞれ、「23万」および「1.04」であった。
・Br−IPMS:臭素化イソブチレン‐p‐メチルスチレン共重合体、エクソンモービルケミカル社製 Exxpro 3035
・変性EEA:無水マレイン酸変性エチレン‐エチルアクリレート共重合体、三井・デュポンポリケミカル社製 HPR‐AR201
・N6/66:ナイロン6/66共重合体、宇部興産社製 UBEウベナイロン5033B
・酸化亜鉛:正同化学工業社製、亜鉛華3号
・ステアリン酸:千葉脂肪酸社製 工業用ステアリン酸
・ステアリン酸亜鉛:日油社製 ステアリン酸亜鉛
2 サイドウォール部
3 ビード部
4 カーカス層
5 ビードコア
6 ビードフィラー
7 ベルト層
8 ベルト補強層
9 インナーライナー層
9A フィルム層
9B 接着ゴム層
CL タイヤ赤道
Claims (6)
- 熱可塑性樹脂または熱可塑性樹脂中にエラストマー成分が分散した熱可塑性エラストマー組成物からなるフィルム層と、該フィルム層を隣接部材に対して接着するための接着ゴム層とで構成されたタイヤ用積層体であって、
前記接着ゴム層を構成するゴム組成物が、末端変性ブタジエンゴム20質量%〜70質量%と、天然ゴム30質量%〜80質量%とを含むゴム成分100質量部に対して、カーボンブラックが20質量部〜80質量部、下記一般式(1)で表される化合物とホルムアルデヒドとの縮合物が0.5質量部〜20質量部、メチレンドナーが0.25質量部〜200質量部配合され、前記縮合物の配合量に対する前記メチレンドナーの配合量の比率が0.5〜10であり、前記末端変性ブタジエンゴムの重量平均分子量(Mw)および数平均分子量(Mn)から求められる分子量分布(Mw/Mn)が2.0以下であり、前記末端変性ブタジエンゴムの末端の官能基がシラノール基、ポリオルガノシロキサン基、N−メチルピロリドン基からなる群から選ばれる少なくとも1種であることを特徴とするタイヤ用積層体。
- 前記熱可塑性樹脂が、ポリビニルアルコール、エチレン‐ビニルアルコール共重合体、ナイロン6、ナイロン66、ナイロン11、ナイロン12、ナイロン610、ナイロン612、ナイロン6/66、ナイロンMXD6、およびナイロン6Tからなる群から選ばれる少なくとも1種であることを特徴とする請求項1に記載のタイヤ用積層体。
- 前記エラストマー成分が、臭素化イソブチレン‐p‐メチルスチレン共重合体、無水マレイン酸変性エチレン‐α‐オレフィン共重合体、エチレン‐グリシジルメタクリレート共重合体、およびスチレン‐イソブチレン‐スチレンブロック共重合体、酸無水物変性スチレン‐イソブチレン‐スチレンブロック共重合体、および無水マレイン酸変性エチレン‐エチルアクリレート共重合体からなる群から選ばれる少なくとも1種であることを特徴とする請求項1または2に記載のタイヤ用積層体。
- 前記メチレンドナーが、変性エーテル化メチロールメラミン、パラホルムアルデヒド、ヘキサメチレンテトラミン、ペンタメチレンテトラミン、およびヘキサメトキシメチルメラミンからなる群から選ばれる少なくとも1種であることを特徴とする請求項1〜3のいずれかに記載のタイヤ用積層体。
- 請求項1〜4に記載のタイヤ用積層体で構成されたことを特徴とする空気入りタイヤ用インナーライナー材。
- 請求項1〜4に記載のタイヤ用積層体で構成されたインナーライナー層を備えた空気入りタイヤ。
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JP2001162722A (ja) * | 1999-12-08 | 2001-06-19 | Tokai Rubber Ind Ltd | ポリアミド・ゴム複合体 |
JP4638933B2 (ja) * | 2007-12-07 | 2011-02-23 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物 |
JP4881362B2 (ja) * | 2008-11-05 | 2012-02-22 | 住友ゴム工業株式会社 | ゴム組成物及びタイヤ |
JP5428519B2 (ja) * | 2009-05-20 | 2014-02-26 | 横浜ゴム株式会社 | 熱可塑性樹脂組成物とゴム組成物の積層体 |
JP2011099018A (ja) * | 2009-11-04 | 2011-05-19 | Bridgestone Corp | タイゴム用ゴム組成物及びそれを用いた空気入りタイヤ |
JP5560164B2 (ja) * | 2010-11-08 | 2014-07-23 | 株式会社ブリヂストン | タイヤ |
BR112013026286A2 (pt) * | 2011-04-15 | 2017-01-24 | Bridgestone Corp | composição adesiva, método de aderência e pneumático |
JP6144866B2 (ja) * | 2011-04-18 | 2017-06-07 | 株式会社ブリヂストン | 粘接着剤組成物及びそれを用いた接着方法、並びに積層体及びタイヤ |
JP5707237B2 (ja) * | 2011-05-31 | 2015-04-22 | 株式会社ブリヂストン | 空気入りタイヤ |
JP5890615B2 (ja) * | 2011-05-31 | 2016-03-22 | 株式会社ブリヂストン | 空気入りタイヤ |
JP5092058B1 (ja) * | 2011-06-21 | 2012-12-05 | 住友ゴム工業株式会社 | タイヤのインスレーション用ゴム組成物およびそれを用いたタイヤ |
JP5808305B2 (ja) * | 2012-11-08 | 2015-11-10 | 住友ゴム工業株式会社 | ゴム組成物及び空気入りタイヤ |
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JP2015163668A (ja) * | 2014-01-29 | 2015-09-10 | 田岡化学工業株式会社 | 樹脂組成物及びその製造方法、並びに共縮合物を含有するゴム組成物 |
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