Tire tread with improved dry/snow traction

• Main Authors: SANDERS EVAN, CATO ANTHONY
• Format: Patent
• Language: Chinese; English
• Published: 20.10.2017
• Subjects: DEVICES OR ARRANGEMENTS RELATED TO TYRES; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; VEHICLE TYRES; VEHICLES IN GENERAL

A tire tread formed from a rubber composition having a functionalized SBR and a BR that is reinforced with between 95 phr and 125 phr of a silica filler and includes a plasticizing system to adjust the glass transition temperature to be between -30 DEG C and -15 DEG C and the dynamic modulus G* at 60 DEG C to be between 0.9 MPa and 1.15 MPa. The tread includes central tread blocks having an average central tread block length of between 6.5 mm and 10 mm and shoulder tread blocks having an average shoulder tread block length of between 10 mm and 20 mm. Furthermore the tread is limited to being between 6.5 mm and 7.7 mm thick. In particular embodiments the rubber composition may be just the functionalized SBR. 种由具有官能化SBR及BR的橡胶组合物形成的轮胎胎面，所述橡胶组合物通过在95phr与125phr之间的二氧化硅填充剂增强及包含用以将玻璃转变温度调节为-30℃与-15℃之间且将60℃下的动态模量G*调节为0.9MPa与1.15MPa之间的塑化系统。所述胎面包含具有在6.5mm与10mm之间的平均中心胎面花纹块长度的中心胎面花纹块及具有在10mm与20mm之间的平均肩部胎面花纹块长度的肩部胎面花纹块。此外，所述胎面的厚度被限于6.5mm与7.7mm之间。在特定实施例中，所述橡胶组合物可仅为所述官能化SBR。