RUBBER COMPOSITION FOR STUDLESS TIRE
RUBBER COMPOSITION FOR STUDLESS TIRE
- Neue Suche nach: KAMAHORI AYAKO
- Neue Suche nach: HIJIKATA KENSUKE
- Neue Suche nach: KAMAHORI AYAKO
- Neue Suche nach: HIJIKATA KENSUKE
PROBLEM TO BE SOLVED: To provide a rubber composition for studless tire for maintaining and enhancing abrasion resistance and on-ice performance while reducing heat generation property by blending carbon black having a specific colloidal property.SOLUTION: Thermal expansion microcapsule of 0.2 to 20 pts.mass and carbon black having nitrogen adsorption specific surface area NSA of 90 m/g or less and compression DBP absorption amount (24M4) of 95 to 120 ml/100 g of 30 to 70 pts.mass are blended with 100 pts.mass of a diene rubber containing a butadiene rubber of 30 to 50 mass% and a natural rubber of 50 to 70 mass% and a ratio of mode diameter Dst (nm) in a mass distribution curve of a Stokes diameter of an aggregate of the carbon black and half band width thereof ΔDst (nm), ΔDst/Dst is 0.65 or more and the NSA, (24M4) and Dst satisfy the following formula;(24M4)/Dst<0.0093×NSA-0.06.SELECTED DRAWING: Figure 2
【課題】特定のコロイダル特性を有するカーボンブラックを配合して発熱性を低減しながら耐摩耗性および氷上性能を維持・向上するようにしたスタッドレスタイヤ用ゴム組成物を提供する。【解決手段】ブタジエンゴムを３０〜５０質量％、天然ゴムを５０〜７０質量％含むジエン系ゴム１００質量部に対し、熱膨張性マイクロカプセルを０．２〜２０質量部、窒素吸着比表面積Ｎ2ＳＡが９０ｍ2／ｇ以下、圧縮ＤＢＰ吸収量（２４Ｍ４）が９５〜１２０ｍｌ／１００ｇのカーボンブラックを３０〜７０質量部配合すると共に、前記カーボンブラックの凝集体のストークス径の質量分布曲線におけるモード径Ｄｓｔ（ｎｍ）およびその半値幅ΔＤｓｔ（ｎｍ）の比ΔＤｓｔ／Ｄｓｔが０．６５以上であり、前記Ｎ2ＳＡ、（２４Ｍ４）およびＤｓｔが次式；（２４Ｍ４）／Ｄｓｔ＜０．００９３×Ｎ2ＳＡ−０．０６を満たすことを特徴とする。【選択図】図２
Dokumentinformationen
RUBBER COMPOSITION FOR STUDLESS TIRE
スタッドレスタイヤ用ゴム組成物
2017-02-09
Patent
Elektronische Ressource
Japanisch
| IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08J Verarbeitung , WORKING-UP / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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