JP5934677B2 - タイヤ用ゴム組成物、及び空気入りタイヤ - Google Patents
タイヤ用ゴム組成物、及び空気入りタイヤ Download PDFInfo
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- JP5934677B2 JP5934677B2 JP2013127758A JP2013127758A JP5934677B2 JP 5934677 B2 JP5934677 B2 JP 5934677B2 JP 2013127758 A JP2013127758 A JP 2013127758A JP 2013127758 A JP2013127758 A JP 2013127758A JP 5934677 B2 JP5934677 B2 JP 5934677B2
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- 235000009566 rice Nutrition 0.000 description 1
- 239000008165 rice bran oil Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 235000019337 sorbitan trioleate Nutrition 0.000 description 1
- 229960000391 sorbitan trioleate Drugs 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 229940052367 sulfur,colloidal Drugs 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 150000003585 thioureas Chemical class 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 229960002447 thiram Drugs 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- 239000002383 tung oil Substances 0.000 description 1
- 235000019871 vegetable fat Nutrition 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural 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
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/06—Sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2650/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G2650/28—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type
- C08G2650/58—Ethylene oxide or propylene oxide copolymers, e.g. pluronics
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Description
具体的には、カーボンブラックの含有量は、ゴム成分100質量部に対して、2質量部以上、好ましくは15質量部以上、より好ましくは25質量部以上である。2質量部未満では、充分な補強性が得られないおそれがある。該含有量は、70質量部以下、好ましくは60質量部以下、より好ましくは50質量部以下である。70質量部を超えると、操縦安定性、耐オゾン性が悪化する傾向がある。
なお、カーボンブラックのN2SAは、JIS K 6217−2:2001によって求められる。
なお、カーボンブラックのDBPは、JIS K 6217−4:2001に準拠して測定される。
なお、シリカのN2SAは、ASTM D3037−93に準じてBET法で測定される値である。
シランカップリング剤としては、ゴム工業において、従来からシリカと併用される任意のシランカップリング剤を使用することができ、例えば、ビス(3−トリエトキシシリルプロピル)ジスルフィド等のスルフィド系、3−メルカプトプロピルトリメトキシシランなどのメルカプト系、ビニルトリエトキシシランなどのビニル系、3−アミノプロピルトリエトキシシランなどのアミノ系、γ−グリシドキシプロピルトリエトキシシランのグリシドキシ系、3−ニトロプロピルトリメトキシシランなどのニトロ系、3−クロロプロピルトリメトキシシランなどのクロロ系等が挙げられる。これらは、単独で用いてもよく、2種以上を併用してもよい。なかでも、スルフィド系が好ましく、ビス(3−トリエトキシシリルプロピル)ジスルフィドがより好ましい。
すなわち、前記成分を配合したゴム組成物を、未加硫の段階でサイドウォール、クリンチ、ウイング等の形状にあわせて押出し加工し、他のタイヤ部材とともに、タイヤ成型機上にて通常の方法で成形することにより、未加硫タイヤを形成できる。この未加硫タイヤを加硫機中で加熱加圧することによりタイヤが得られる。
NR:RSS#3
IR:日本ゼオン(株)製のIR2200
BR1:宇部興産(株)製のBR150B(シス含量:97質量%)
BR2:宇部興産(株)製のVCR412(1,2−シンジオタクチックポリブタジエン結晶を含むブタジエンゴム(SPB含有BR)、1,2−シンジオタタチックポリブタジエン結晶含有率:12質量%)
BR3:日本ゼオン(株)製のBR1250H(低シス含量BR)
SBR:日本ゼオン(株)製のSBR1502
カーボンブラック:キャボットジャパン(株)製のショウブラックN330(N2SA:75m2/g、DBP:102ml/100g)
シリカ:エボニックデグッサ社製のウルトラジルVN3(N2SA:175m2/g)
シランカップリング剤:エボニックデグッサ社製のSi266(ビス(3−トリエトキシシリルプロピル)ジスルフィド)
ワックス:大内新興化学工業(株)製のサンノックワックス
オイル:出光興産(株)製のプロセスオイルPW−32(パラフィン系プロセスオイル)
界面活性剤1:三洋化成工業(株)製のニューポールPE−64(プルロニック型非イオン界面活性剤(PEG/PPG−25/30コポリマー)(上記式(I)のa+c:25、b:30)
界面活性剤2:三洋化成工業(株)製のニューポールPE−74(プルロニック型非イオン界面活性剤(PEG/PPG−30/35コポリマー)(上記式(I)のa+c:30、b:35)
界面活性剤3:関東化学(株)製のモノステアリン酸ポリオキシエチレンソルビタン
界面活性剤4:関東化学(株)製のトリオレイン酸ポリオキシエチレンソルビタン
界面活性剤5:関東化学(株)製のポリオキシエチレンドデシルエーテル
界面活性剤6:東京化成工業(株)製のエチレングリコールジブチルエーテル
老化防止剤:大内新興化学工業(株)製のノクラック6C(N−(1,3−ジメチルブチル)−N’−フェニル−p−フェニレンジアミン)
ステアリン酸:日油(株)製のステアリン酸
硫黄:鶴見化学工業(株)製の粉末硫黄
V200:田岡化学工業(株)製のタッキロールV200(アルキルフェノール・塩化硫黄縮合物)
酸化亜鉛:三井金属鉱業(株)製の亜鉛華1号
加硫促進剤:大内新興化学社製のノクセラーNS(N−tert−ブチル−2−ベンゾチアゾリルスルフェンアミド)
JIS K6253に準拠し、25℃の温度で硬度計を用いて各加硫ゴム組成物の硬度を測定(ショア−A測定)し、基準比較例の硬度を100とした指数(各配合の硬度/基準比較例の硬度×100)を計算した。指数が大きいほど、操縦安定性に優れることを示す。
各加硫ゴム組成物から3号ダンベル型を用いて試験片を作成し、JIS K 6251「加硫ゴム及び熱可塑性ゴム−引張特性の求め方」に準じて、室温にて引張試験を実施し、破断時伸びEB(%)を測定し、基準比較例のEBを100とした指数(各配合のEB/基準比較例のEB×100)を計算した。指数が大きいほど、耐クラック性に優れることを示す。なお、EB指数は98以上を目標とした。
JIS K 6259「加硫ゴムおよび熱可塑性ゴム−耐オゾン性の求め方」に準じて、得られた加硫ゴム組成物から所定のサイズの試験片を作製し、動的オゾン劣化試験を行った。往復運動の周波数0.5±0.025Hz、オゾン濃度50±5pphm、試験温度40℃、引張歪み20±2%の条件下で、48時間試験した後の亀裂(クラックの発生の有無)の状態を観察することで、耐オゾン性を評価した。なお、指数が大きいほど亀裂の数が少なく、亀裂の大きさが小さく、耐オゾン性に優れることを示す。
耐オゾン性試験を終えたサンプルを(株)ミノルタ製色彩色差度計(CR−310)を用い、a値、b値を求めた(L*a*b*表色系)。指標を(a2+b2)−0.5とし、基準比較例の指標を100とした指数(各配合の指標/基準比較例の指標×100)を計算した。指数が大きいほど、変色が少なく、耐変色性に優れることを示す。
耐オゾン性試験を終えたサンプルを屋外に持ち出し、下記指標にて外観評価を行った。
◎基準比較例より黒く、光沢がある
○基準比較例より黒く、やや光沢がある
△基準比較例と同等の茶色
×基準比較例より茶色い
得られた未加硫ゴム組成物を用いて、サイドウォールの形状に合わせて成形し、他のタイヤ部材とともに貼り合わせて未加硫タイヤを作製し、170℃で加硫して試験用タイヤ(実施例1、比較例1)を得た。得られた試験用タイヤについて、30日間雨のかからない屋外で日光に暴露させた後、サイドウォール部を切り取り、走査型電子顕微鏡(scanning electron microscope:SEM/フィリップ社製XL30 ESEM)を用いて観察した。結果を図1(比較例1)、図2(実施例1)に示した。図1、2より、実施例1のサイドウォールの表面は、平面を保っていたのに対し、比較例1のサイドウォールの表面は、ワックス等による凹凸が見られた。なお、実施例1のサイドウォールは、黒く外観も良好であった。一方、比較例1のサイドウォールは茶色く外観も悪かった。
Claims (7)
- ブタジエンゴム、天然ゴム、及びイソプレンゴムの合計含有量がゴム成分100質量%中90質量%以上であり、
硫黄を含み、
ゴム成分100質量部に対して、非イオン界面活性剤を0.1〜5.0質量部、カーボンブラックを2〜70質量部含み、
該非イオン界面活性剤が、プロピレンオキシド構造から構成される疎水基の両側に、エチレンオキシド構造から構成される親水基を有する非イオン界面活性剤であって、下記式(I)で表される非イオン界面活性剤であるタイヤ用ゴム組成物。
- ゴム成分100質量部に対して、前記硫黄を0.1〜6.0質量部含む請求項1記載のタイヤ用ゴム組成物。
- 前記ブタジエンゴムの含有量がゴム成分100質量%中30質量%以上である請求項1又は2記載のタイヤ用ゴム組成物。
- ゴム成分100質量部に対して、シリカを0〜40質量部含む請求項1〜3のいずれかに記載のタイヤ用ゴム組成物。
- サイドウォール用ゴム組成物、クリンチ用ゴム組成物、及び/又はウイング用ゴム組成物として用いられる請求項1〜4のいずれかに記載のタイヤ用ゴム組成物。
- 請求項1〜5のいずれかに記載のゴム組成物を用いて作製したタイヤ部材を有する空気入りタイヤ。
- 前記タイヤ部材が、サイドウォール、クリンチ、及び/又はウイングである請求項6記載の空気入りタイヤ。
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JP2013127758A JP5934677B2 (ja) | 2013-06-18 | 2013-06-18 | タイヤ用ゴム組成物、及び空気入りタイヤ |
CN201480032257.3A CN105283500B (zh) | 2013-06-18 | 2014-05-19 | 轮胎用橡胶组合物和充气轮胎 |
PCT/JP2014/063172 WO2014203667A1 (ja) | 2013-06-18 | 2014-05-19 | タイヤ用ゴム組成物、及び空気入りタイヤ |
US14/894,446 US9926437B2 (en) | 2013-06-18 | 2014-05-19 | Rubber composition for tires, and pneumatic tire |
EP14814555.0A EP3000843B1 (en) | 2013-06-18 | 2014-05-19 | Rubber composition for tires, and pneumatic tire |
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CN105504383A (zh) * | 2016-01-08 | 2016-04-20 | 建大橡胶(中国)有限公司 | 一种轮胎胎侧橡胶组合物及其合成方法 |
JP2017190412A (ja) * | 2016-04-14 | 2017-10-19 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物、及び空気入りタイヤ |
CA3025623C (en) | 2016-05-27 | 2020-11-17 | Japan Tobacco Inc. | Tobacco filling for non-combustion-type heating smoking article |
BR112018075827A2 (pt) * | 2016-06-28 | 2019-03-19 | Basf Se | composição de borracha, uso de composições de borracha, e, processo para fabricação de estria de pneu. |
FR3053692B1 (fr) * | 2016-07-07 | 2018-06-22 | Compagnie Generale Des Etablissements Michelin | Composition de caoutchouc comprenant un coupage de caoutchoucs naturels ayant une distribution de masse moleculaire, vue en sec-mals, respectivement unimodale ou bimodale, procede de preparation et composant de pneumatique |
WO2018168313A1 (ja) * | 2017-03-15 | 2018-09-20 | 住友ゴム工業株式会社 | サイドウォール用ゴム組成物及び空気入りタイヤ |
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CN112980060A (zh) * | 2021-01-29 | 2021-06-18 | 山东玲珑轮胎股份有限公司 | 一种防止轮胎变色的橡胶组合物和轮胎 |
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JP2009137403A (ja) * | 2007-12-05 | 2009-06-25 | Sumitomo Rubber Ind Ltd | 空気入りラジアルタイヤ |
DE102010017805A1 (de) * | 2010-07-08 | 2012-01-12 | Continental Reifen Deutschland Gmbh | Kautschukmischung |
WO2012020826A1 (ja) * | 2010-08-11 | 2012-02-16 | 株式会社ブリヂストン | ゴム組成物、ゴム組成物の変色防止方法、及びタイヤ |
JP5643134B2 (ja) * | 2011-02-22 | 2014-12-17 | 住友ゴム工業株式会社 | サイドウォール用ゴム組成物、トレッド用ゴム組成物及び空気入りタイヤ |
JP2012180386A (ja) * | 2011-02-28 | 2012-09-20 | Sumitomo Rubber Ind Ltd | ビードエイペックス又はクリンチ用ゴム組成物、及び空気入りタイヤ |
WO2012144605A1 (ja) * | 2011-04-22 | 2012-10-26 | 横浜ゴム株式会社 | タイヤ用ゴム組成物およびスタッドレスタイヤ |
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US20160122517A1 (en) | 2016-05-05 |
EP3000843A4 (en) | 2016-11-30 |
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