Abstract:
A method of obtaining a reinforcing assembly comprising reinforcement threads and a solid matrix is characterized by the fact that reinforcement threads surrounded individually by a sheathing of organic material I and furthermore surrounded by another sheathing of organic material II are grouped together, by the fact that the material II is caused to migrate into voids between the threads sheathed with material I and by the fact that the material II is caused to solidify.
Abstract:
Brass-coated steel cord is provided with improved adhesive characteristics for use in tire making, by coating it with certain combinations of sulfur-containing accelerators and phosphate corrosion inhibitors.
Abstract:
A load bearing member includes at least one elongated tension member having at least one wire and a protective coating on the elongated tension member. The protective coating includes a first corrosion inhibitor having an oxide-forming metal, a second corrosion inhibitor having a rare earth metal, and a third corrosion inhibitor having an organic material.
Abstract:
Renfort composite (R-2) susceptible d'adhérer directement à une matrice de caoutchouc diénique, utilisable comme élément de renforcement d'un bandage pneumatique, comportant: un fil ou plusieurs fil(s) de renforcement (20), notamment un câble en acier au carbone; recouvrant individuellement ledit fil, chaque fil ou collectivement plusieurs fils, une première couche (21) d'un polymère thermoplastique dont la température de transition vitreuse est positive, notamment un polyamide 6-6; - recouvrant la première couche (21), une deuxième couche (22) d'une composition comportant un poly(p-phénylène éther) ("PPE") et un élastomère thermoplastique styrénique ("TPS") fonctionnalisé insaturé, dont la température de transition vitreuse est négative, ledit élastomère étant porteur de groupes fonctionnels choisis parmi les groupes époxyde, carboxyle, anhydride ou ester d'acide, notamment un élastomère SBS époxydé. Procédé de fabrication d'un renfort composite; article ou produit semi-fini en caoutchouc, notamment bandage pneumatique, incorporant un tel renfort composite.
Abstract:
Renfort composite (R-2) auto-adhérent par cuisson à une matrice de caoutchouc diénique, utilisable comme élément de renforcement d'un bandage pneumatique, comportant : -au moins un fil de renforcement (20), par exemple un câble en acier au carbone; -recouvrant ledit fil, une première couche (21) d'un polymère thermoplastique dont la température de transition vitreuse est positive, par exemple un polyamide 6-6; -recouvrant la première couche (21), une deuxième couche (22) comportant un élastomère thermoplastique styrénique insaturé dont la température de transition vitreuse est négative, par exemple un copolymère SBS (styrène-butadiène-styrène). Procédé de fabrication d'un tel renfort composite; article ou produit semi-fini en caoutchouc, notamment bandage pneumatique, incorporant un tel renfort composite.
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:
A steel cord (16) adapted for the reinforcement of thermoplastic elastomers comprises more than one strand (18, 20). Each strand comprises two or more steel filaments (22, 24, 26, 28). At least some of said steel filaments are provided with a zinc coating (40), characterized in that said zinc coating (40) has a thickness lower than two micrometer and that an alloy layer zinc - steel (42) is present between the zinc coating and the steel.
Abstract:
A coated metal reinforcement element for polymeric or elastomeric materials comprises a coating of: a polymer or prepolymer compatible with and co-polymerizable, co-vulcanizable or cross-linkable with said polymeric or elastomeric material to be reinforced, and bearing functional groups; either covalently bonding to the metal surface of said reinforcement element; or forming covalent bonds with the outward directed first functional groups of a mono- or multimolecular layer of a bifunctional adhesion promotor intercalated between said metal and said coating and bound to said metal by its second functional groups. A method for the coating includes a one step and a two step procedure.
Abstract:
In a composite of a vulcanizable rubber or rubber-like composition with one or more metal reinforcement elements embedded therein, the metal reinforcement element is coated with a polymer or non-cured rubber composition compatible with and co-polymerizable, co-vulcanizable or crosslinkable with said vulcanizable rubber composition to be reinforced, and additionally bearing functional groups either covalently bonding to the metal surface of said reinforcement element or forming covalent bonds with the outward directed first functional groups of a mono- or multimolecular layer of a bifunctional adhesion promotor intercalated between said metal and said coating and bound to said metal by its second functional groups. A cured rubber or rubber-like product, for instance a pneumatic tire, is obtained by vulcanization of such a composite.