Abstract:
The invention relates to cord (20) comprising a number of filaments twisted together. The peripheral surface of the cord (20) is at least partially coated with an adhesion promoting coating (24). The adhesion promoting coating (24) comprises at least a first layer comprising a silicon based coating, a titanium based coating, a zirconium based coating or a combination thereof. The invention further relates to a composite material comprising such a cord (20) embedded in a polymer material. Furthermore the invention relates to a method to manufacture such a cord (20).
Abstract:
The present invention concerns a method of producing a strand (2) comprising wires (3) twisted together. The wires (3) are individually coated with a protective anti-corrosive barrier film containing a volatile migratory corrosion inhibitor (VMCI). The individually coated wires may then be enclosed in a protective sheath (4), and the spaces (6) between the sheath (4) and the wires (3) may filled with a corrosion-inhibiting filler substance (7). The sheath (4) and/or the corrosion-inhibiting filler substance (7) may also contain a volatile corrosion-inhibiting agent.
Abstract:
Composite reinforcement (R-2) that is self-adhesive by curing to a diene rubber matrix, which can be used as reinforcing element for a tire, comprising: at least one reinforcing thread (20), for example a carbon steel cord; a first layer (21) of a thermoplastic polymer, the glass transition temperature of which is positive, for example 6,6 polyamide, covering said thread; and a second layer (22) comprising an unsaturated thermoplastic stirene elastomer, the glass transition temperature of which is negative, for example an SBS (stirene-butadiene-stirene) copolymer, covering the first layer (21). Process for manufacturing such a composite reinforcement and rubber article or semi-finished product, especially a tire, incorporating such a composite reinforcement.
Abstract:
Prestressing steel materials are disclosed for use with concrete that is prestressed by posttensioning, said steel material being unbonded from the concrete. The steel materials are composed of steel members sheathed with a heat-shrinkable synthetic resin tube. Preferably, the wall thickness of the resin tube is at least 300 microns. In the case of a steel strand composed of a plurality of twisted steel wires, spiral grooves of the strand are filled with a resin and then the strand and resin are sheathed with a heat-shrinkable synthetic resin tube.