Abstract:
The invention relates to a composite reinforcement (R-2) that is self-adhesive by firing with a diene rubber matrix, which can be used as a reinforcing element for a tyre, comprising: at least one reinforcement wire (20), for example a carbon-steel cable; a first layer (21) covering said wire and made of a thermoplastic polymer having a positive glass transition temperature, for example a polyamide 6-6; and a second layer (22) covering said first layer (21) and comprising an unsaturated thermoplastic styrene elastomer having a negative glass transition temperature, for example an SBS (styrene-butadiene-styrene) copolymer. The invention also relates to a method for making such a composite reinforcement, and to an article or semi-finished product made of rubber, in particular a tyre, including such a composite reinforcement.
Abstract:
The invention concerns a (metal/rubber) composite comprising a rubber matrix reinforced with a metal body adhering to the rubber matrix via an adhesive intermediate phase; the rubber matrix is based on diene elastomer; the metal is carbon steel whereof the carbon content ranges between 0.35 % and 1.2 %; to constitute the adhesive intermediate phase, the steel carbon is coated with a metal layer bearing aluminium oxides-hydroxides, itself coated with an organosilane film providing, as coupling agent, the bond between the aluminium oxides-hydroxides and the rubber matrix. The invention also concerns articles or semi-finished products made of rubber reinforced with or consisting of said composite, in particular tyres.
Abstract:
There is disclosed a zinc-rich coated steel article which is characterized by an outer layer of rubber containing a weight ratio of sulfur vulcanizing agent to total accelerator ranging from 0.4:1 to 0.8:1.
Abstract:
L'invention concerne un substrat qui sert au renforcement des polymères élastomères, au moins une partie du substrat étant composée d'acier, ladite partie étant recouverte d'une couche d'un alliage constitué, mises à part les impuretés, d'entre 4,2 % et 6,5 % en poids d'aluminium, et éventuellement moins de 0,1 % d'au moins un élément qui stimule la capacité de mouillage du substrat par l'alliage liquide, le solde étant constitué par du zinc.
Abstract:
A filament, and optionally a cord of cabled filaments, as a composite of (A) a filament and/or cord of steel, (B) a brass and/or zinc coating thereon and (C) an undercoat comprised of selected compounds. The invention further relates to a composite of such filament and/or cord as a reinforcement with rubber.