To provide a tire which suppresses cracking on a tire member surface, and is excellent in a market life of a tire.SOLUTION: A tire has a rubber layer, in which fracture energy E1 (MPa %) when a dumbbell-like No. 7 test piece cut from the rubber layer is cut, is subjected to heat treatment at 170°C for 12 minutes in a state where the cut surfaces are mated with each other and then is elongated and deformed, fracture energy E2 (MPa %) when the dumbbell-like No. 7 test piece cut from the rubber layer is subjected to heat treatment at 170°C for 12 minutes, and then is elongated and deformed, and a thickness T (mm) of the rubber layer satisfy the following expressions (1) and (2). Expression (1): E1/E2×100>25. Expression (2): E1/E2×T×100>50.SELECTED DRAWING: None
【課題】タイヤ部材表面のクラック等が抑制され、タイヤの市場ライフに優れたタイヤを提供する。【解決手段】ゴム層を有するタイヤであって、前記ゴム層から切り出したダンベル状7号試験片を切断し、切断面を合わせた状態で170℃で12分間熱処理を施した後、伸長変形させた際の破壊エネルギーE1〔MPa・%〕、前記ゴム層から切り出したダンベル状7号試験片を170℃で12分間熱処理を施した後、伸長変形させた際の破壊エネルギーE2〔MPa・%〕、及び前記ゴム層の厚みT〔mm〕が、下記式(1)、(2)を満たすことを特徴とするタイヤ。E1/E2×100>25 (1)E1/E2×T×100>50 (2)【選択図】なし
TIRE AND RUBBER COMPOSITION
タイヤ及びゴム組成物
2021-12-27
Patent
Elektronische Ressource
Japanisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
Europäisches Patentamt | 2020
|Europäisches Patentamt | 2021
|Europäisches Patentamt | 2021
|RUBBER COMPOSITION, TIRE RUBBER COMPOSITION, CRAWLER RUBBER COMPOSITION, TIRE AND RUBBER CRAWLER
Europäisches Patentamt | 2020
|RUBBER COMPOSITION, RUBBER COMPOSITION FOR TIRE, AND TIRE
Europäisches Patentamt | 2020
|