摘要:
The present invention relates to a tire, the tread of which comprises a rubber composition comprising at least one diene elastomer such as SBR and/or BR, a reinforcing filler such as silica and/or carbon black and more than 10 pce, preferably more than 15 pce of a hydrogenated styrene thermoplastic elastomer. Said composition, having a reduced viscosity in the crude condition, allows tire treads to be obtained having reduced rolling resistance while still maintaining good grip on wet ground.
摘要:
Studded tyre (10) the tread (20) of which comprises a first part (201) in contact with the ground and a second part (202) arranged radially on the inside of the first part, and at least one stud (30) projecting from the tread (20) and the head (70) of which is entirely anchored in the second part (202) of the tread (20), in which the complex modulus G (0°C) of the rubber compound of which the first part (201) of the tread (20) is formed is less than 1.5 MPa and in which the complex modulus G of the rubber compound of which the second part (202) of the tread (20) is made changes as a function of temperature such that G (5°C) is greater than or equal to 5 MPa and G*(20°C) is less than or equal to 0.5-G*(5°C).
摘要:
The present invention relates to a tyre, the tread of which comprises an elastomer composition including: 10 to 60 pce of a polybutadiene (BR) elastomer; 10 to 60 pce of a saturated thermoplastic styrene (TPS) elastomer; and reinforcing filler. The combined use of the saturated TPS and BR elastomers increases the rigidity and thus improves the road performance of the tyres, without reducing the hysteresis and hence the rolling resistance of said tyres.
摘要:
A snow tyre with improved grip on wet ground, the tread of which comprises a rubber composition comprising at least (parts by weight per hundred parts of elastomer): - 20 to 100 phr of a first diene elastomer bearing at least one SiOR function, R being hydrogen or a hydrocarbon-based radical; - optionally, 0 to 80 phr of a second diene elastomer; - 100 to 160 phr of a reinforcing inorganic filler; - and a plasticizing system comprising: - in an amount A of between 10 and 60 phr, a hydrocarbon-based resin which has a Tg above 20°C; - and in an amount B of between 10 and 60 phr, a liquid plasticizer; - it being understood that the total amount A + B is greater than 50 phr.
摘要:
The present invention relates to a tyre of which the tread comprises a rubber composition comprising at least one diene elastomer such as, for example, an SBR or BR elastomer, a thermoplastic vulcanizate elastomer of EPDM and of polypropylene, in an amount preferentially greater than 5 phr, and a reinforcing filler such as silica and/or carbon black. Such a composition gives the tyre improved grip on wet ground.
摘要:
The invention relates to an asymmetrical tread for a snow tyre comprising a rubber composition, said tread (1) having a running surface intended to be in contact with the ground during the running of the tyre, said tread (1) having a series of base motifs (3, 5) arranged in the circumferential direction (X), each base motif extending over at least 80% of the width (W) of the tread (1), each base motif (3, 5) having a plurality of elements in relief (11a-11k) provided with incisions (13i) that open onto the running surface, each incision having a width of less than 1 mm and a depth of at least 3 mm. For each base motif (3, 5) of the tread, there is defined a level of orientation of the incisions (NO) corresponding to (I) where i is the number of incisions in the motif, li is the length of the i-th incision on the running surface, P is the pitch of the base motif, Wm is the width of the base motif, αi is the positive or negative angle formed on the running surface by the i-th incision with respect to the transverse direction, where αi ≤ 45 degrees, said level of orientation being greater than or equal to 1.5 degrees/mm. The rubber composition has at least one diene elastomer, an inorganic reinforcing filler and a plasticizing system comprising a liquid plasticizer at a level B of between 10 and 60 phr, said liquid plasticizer being a vegetable oil.