The invention discloses a pneumatic tire having a tread comprising three elastomers. A pneumatic tire comprising a vulcanizable rubber composition comprising: 1) 100 parts by weight of an elastomer consisting of 25 to 35 phr of a styrene-butadiene rubber, 45 to 75 phr of a polybutadiene, and 5 to 15 phr of a natural rubber or synthetic polyisoprene, wherein the styrene-butadiene rubber is functionalized and has a Tg (A) in the range of-30 to-10 DEG C; the natural rubber or synthetic polyisoprene has a Tg (B) of from-60 DEG C to-70 DEG C; and the polybutadiene is a cis-1, 4-polybutadiene having a Tg (C) of from-110 DEG C to-90 DEG C, where Tg (A)-Tg (B) > = 25 DEG C, and Tg (B)-Tg (C) > = 25 DEG C; 2) 70 to 100 phr of silica; 3) 1 to 20 phr of carbon black; 4) 1 to 15 phr of rubber processing oil; and 5) 5 to 50 phr of at least one hydrocarbon resin having a Tg > = 20 DEG C and a rosin-derived resin.
本发明公开了具有包含三种弹性体的胎面的充气轮胎。一种充气轮胎,其包含可硫化橡胶组合物,所述可硫化橡胶组合物包含:1)100重量份的弹性体,所述弹性体由25至35 phr的苯乙烯‑丁二烯橡胶、45至75 phr的聚丁二烯和5至15 phr的天然橡胶或合成聚异戊二烯组成,其中所述苯乙烯‑丁二烯橡胶是官能化的并且具有‑30至‑10℃范围内的Tg(A);所述天然橡胶或合成聚异戊二烯具有‑60℃至‑70℃的Tg(B);并且所述聚丁二烯是具有‑110℃至‑90℃的Tg(C)的顺式‑1,4‑聚丁二烯,其中Tg(A)‑Tg(B)≥25℃,并且Tg(B)‑Tg(C)≥25℃;2)70至100 phr的二氧化硅;3)1至20 phr的炭黑;4)1至15 phr的橡胶加工油;和5)5至50 phr的至少一种Tg≥20℃的烃树脂和松香衍生的树脂。
Pneumatic tire having tread comprising three elastomers
具有包含三种弹性体的胎面的充气轮胎
2022-09-20
Patent
Electronic Resource
Chinese
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / 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 |
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