摘要:
A rubber composition that can be used for the manufacture of tyres, made with at least one diene elastomer, an inorganic reinforcing filler, a coupling agent that links the inorganic filler and the elastomer, characterised by the fact that said inorganic filler comprises a silicon carbide with the following characteristics: - a) a specific surface area BET of between 20 and 200 m2/g; b) an average particle size (mass) d¿w? of between 10 and 350 nm. Such a rubber composition is used for the manufacture of rubber articles, particularly tyres and semi-finished rubber products intended for said tyres, specifically tyre treads.
摘要:
A rubber composition which can be used in the production of pneumatic tyres, comprising at least: i) one diene elastomer; ii) one white filler as a reinforcing filler and iii) a coupling agent (white filler/elastomer), characterised in that said white filler is made of or partially made of titanium oxide having the following characteristics: a) the specific BET surface thereof is between 20 and 200 m2/g; b) the average (mass) size of particles, noted as d¿w?, is 20 - 400 nm; c) the deagglomeration speed thereof, noted as α, measured in the ultrasound deagglomeration test at 100 % rating of a 600 W ultrasonic probe, is more than 2.10?-2 νm1¿/s. The inventive rubber composition can be used in the production of rubber articles, especially pneumatic tyres or semi-finished rubber products for said pneumatic tyres. Said composition is more specifically designed for use in the production of coloured pneumatic tyres or coloured semi-finished goods such as the treads or side walls of pneumatic tyres.
摘要:
The invention concerns a rubber composition to be used for making tyres, comprising at least (i) a diene elastomer, (ii) a white filler as reinforcing filler and (iii) a coupling agent ( white filler/elastomer). The invention is characterised in that said white filler consists entirely or partly of a titanium oxide having the following characteristics: (a) it comprises more than 0.5 % in volume of a metal element other that titanium selected from the group consisting of Al, Fe, Si, Zr or a mixture of those elements; (b) its BET surface specific area ranges between 20 and 200 m2/g; (c) its average particle size (in volume), recorded as d¿w?, ranges between 20 and 400 nm; (d) its speed of ultrasonic deagglomeration, recorded as α, measured according to the so-called ultrasonic deagglomeration test, at an amplitude of an ultrasonic probe of 600 W, is higher than 2.10?-2 νm-1¿/s. The invention also concerns the use of said rubber composition for making rubber articles, in particular tyres or semi-finished products designed for those tyres. The inventive composition is used in particular for making coloured tyres or semi-finished articles such as running treads of tyre sidewalls.
摘要:
Tyre having an inner and/or outer surface comprising a receiving region, an adhesive layer deposited on said receiving region and a protective film deposited on said adhesive layer, characterized in that said adhesive layer is made from a block thermoplastic elastomer (TPE) comprising an elastomer block made from a diene elastomer having a molecular (or mass) unsaturation level greater than 0%.
摘要:
An airtight elastomeric laminate for tyres, wherein said laminate comprises at least two superposed layers of elastomer: a first layer, consisting of a composition based on at least one thermoplastic elastomer comprising polystyrene and polyisobutylene blocks, the amount of thermoplastic elastomer comprising polystyrene and polyisobutylene blocks being included within a range of more than 50 to 100 phr (parts by weight by 100 parts by weight of elastomer); a second layer, consisting of a composition based on at least one diene elastomer, the amount of diene elastomer being included within a range of more than 50 to 95 phr, and on at least one styrene thermoplastic elastomer (TPS), the amount of styrene thermoplastic elastomer being included within a range of from 5 to less than 50 phr.
摘要:
The invention relates to a composite reinforcement (R-2) that auto-adheres, during curing, to a diene rubber matrix. Said reinforcement can be used as a reinforcing element for a pneumatic tyre and comprises: at least one reinforcing thread (20), for example a carbon steel cord; a layer (21) of a thermoplastic polymer composition, covering each thread individually or collectively as a plurality of threads, comprising a thermoplastic polymer having a positive glass transition temperature and an unsaturated, functionalised thermoplastic styrene elastomer having a negative glass transition temperature, said elastomer carrying functional groups selected from the groups epoxide, carboxyl, anhydride or acid ester. The invention also relates to a method for producing such a composite reinforcement, and to a semi-finished rubber product or item, especially a pneumatic tyre, including such a composite reinforcement.