The present invention relates to a rubber composition for tire tread with enhanced abrasion resistance and braking performance and, more particularly, to a rubber composition for tire tread, to which a metal oxide-coated carbon nanotube is added as a filler with increased affinity with a raw material of rubber. According to the present invention, it is possible to obtain a rubber composition for a tire tread with enhanced wear resistance performance by applying a metal oxide-coated high-rigidity carbon nanotube with a higher specific surface to maintain hardness and modulus while reducing a total amount of fillers compared to a previous one; increasing hysteresis between tire and road surface to enhance breaking performance; and increasing a filler-rubber interaction between the filler and the rubber to enhance wear-resistant performance.
본 발명은 내마모(abrasion resistance) 및 제동 (Braking) 성능이 향상된 타이어 트레드 고무 조성물에 관한 것으로서, 보다 상세하게는 타이어 트레드 고무 조성물에 있어서, 원료 고무와의 친화력을 증대시킨 충전재(filler)로서 금속산화물-코팅된 탄소나노튜브를 첨가한 타이어 트레드용 고무 조성물에 관한 것이다. 본 발명에 의하면 비표면적이 높은 금속산화물-코팅된 고강성 탄소나노튜브를 적용하여 기존 대비 토탈 필러 사용량을 감량함에도 경도 및 모듈러스는 유지하며, 제동 시, 타이어 및 노면간의 히스테리시스를 높혀 제동 성능을 향상시키며, 충전제와 고무 사이의 상호작용(Filler-Rubber interaction)을 상승시켜 내마모 성능을 향상시킨 타이어 트레드용 고무 조성물을 얻을 수 있다.
Rubber composition for tire tread having improved wear and braking performance
마모 및 제동 성능이 향상된 승용차 타이어용 트레드 고무 조성물
2020-07-06
Patent
Electronic Resource
Korean
IPC: | C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
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