摘要:
A reinforced product (21) comprises: - an elastomer matrix (23), - several reinforcing elements (44) embedded in the elastomer matrix (23), the reinforcing elements (44) being arranged side by side in a main direction (X1), each reinforcing element (44) comprising: - several wired elements (46), and - at least one shared sheath collectively coating the wired elements (46) and comprising at least one layer of a thermoplastic polymeric composition. The ratio R1=ODO/E of the mean minimum thickness ODO of elastomer present on the back of the sheath to the mean thickness E of the reinforced product (21) is less than or equal to 0.17, the mean minimum thickness ODO of elastomer and the mean minimum thickness E of the reinforced product (21) being measured in a direction substantially perpendicular to the main direction (X1).
摘要:
A reinforced product (21) comprises: - an elastomer matrix (23), - several reinforcing elements (44) embedded in the elastomer matrix (23), the reinforcing elements (44) being arranged side by side in a main direction (X1). Each reinforcing element (44) comprises: at least one wired element (46) comprising a single monofilament, at least one sheath coating the wired element (46) and comprising at least one layer of a thermoplastic polymeric composition. The ratio R1=ODO/E of the mean minimum thickness ODO of elastomer present on the back of the sheath to the mean thickness E of the reinforced product (21) is less than or equal to 0.17, the mean minimum thickness of elastomer ODO and the mean thickness E of the reinforced product (21) being measured in a direction (Y1) substantially perpendicular to the main direction (X1).
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.
摘要:
The invention relates to a composite reinforcement (R-2) which can directly adhere to a diene rubber matrix, which can be used as a reinforcement element for a tire, and which comprises: one or more reinforcement wires (20), in particular a carbon-steel cable; a first layer individually covering said wire, each wire, or collectively covering a plurality of wires, said layer being made of a thermoplastic polymer, the glass transition temperature of which is positive, in particular a 6-6 polyamide; a second layer (22) covering the first layer (21) and having a composition comprising a poly(p-phenylene ether) (PPE) and a functionalized unsaturated styrene thermoplastic elastomer (TPS), the glass transition temperature of which is negative, said elastomer having functional groups selected from among epoxide, carboxyl, anhydride or acid ester groups, in particular an epoxidized SBS elastomer. The invention also relates to a method for making a composite reinforcement, and to an article or semi-finished product made of rubber, in particular a tire, including such a composite reinforcement.
摘要:
The invention relates to a tire having a radial casing framework consisting of at least one layer of metal reinforcement elements. Said tire includes an upper framework which is itself radially covered with a tread that is joined to two beads by means of two flanks. The reinforcement elements of the casing framework layer consists of at least one wire-like element and at least one sheath that coats said wire-like element. Said sheath includes at least one thermoplastic polymer composition layer, and the rubber mixture thickness between the inner surface of the cavity of the tire and the point of a metal reinforcement element of the casing framework that is nearest said inner surface of the cavity is higher than 3.8 mm.
摘要:
The invention relates to a composite reinforcement (R-2) which is capable of directly adhering to a diene-rubber matrix, which can be used in particular as a reinforcement element for a tire, and which comprises: one or more reinforcement wires (20) such as a carbon-steel wire or cable; a layer of a polymer composition covering said wire, i.e. either each wire separately or a plurality of wires collectively, said layer comprising at least one thermoplastic polymer, the glass transition temperature of which is positive, such as a polyamide, and an epoxidized diene elastomer, such as natural rubber or a butadiene homopolymer or copolymer. The invention also relates to a method for manufacturing such a composite reinforcement, and to a finished article or semi-finished product made of rubber, in particular a tire, including such a composite reinforcement.
摘要:
The invention relates to a rubber composite, in particular a tyre, reinforced with a sized textile material, such as a fibre or film, at least part of which is covered with an adhesive layer that can bond directly by means of curing (cross-linking) to an unsaturated rubber matrix, such as natural rubber. The invention is characterised in that the layer comprises an adhesive composition or thermoplastic adhesive in the liquid or solid state, which is based on at least one unsaturated styrene thermoplastic elastomer (TPS) and a poly(p-phenylene ether) (PPE). Advantageously, such an adhesive based on unsaturated TPS-based and PPE can replace a traditional RFL-type textile adhesive. The invention also relates to the use of such an adhesive for bonding a textile material to an unsaturated rubber, in particular unsaturated diene rubber. Furthermore, the invention relates to a method for producing such a composite.