| 摘要 |
A cable (10) adapted for harsh and abrasive environments is provided. The cable (10) has at least one conductor (12, 14, 16) within a jacket (16); and a urethane-based coating over the jacket (16). According to one aspect of the invention, the urethane-based coating is a thermoplastic material. The thermoplastic material preferably has tensile strength which breaks in the range of 20 to 50 MPa; an elongation at break in the range of 150 to 700 percent; a durometer hardness in the range of 60 Shore A to 75 Shore D; and abrasion resistance in the range of 0.01 to 0.05 cm<3> volume loss measured using the method outline in ISO-4649-1985(E). An adhesive is preferably used to bond the thermoplastic material of the coating to the jacket of the cable. According to a more advantageous aspect of the invention, the urethane-based coating is a thermoset material. The thermoset material preferably includes a filler system selected from the group consisting of: carbon black, non-black inorganic filler, and any combination thereof. The thermoset material is preferably co-extruded with the jacket, so no adhesive is needed. The thermoset material preferably has: a tensile strength at break in the range of 14 to 31 MPa; an elongation at break in the range of 150 to 750 percent; a durometer hardness in the range of 40 Shore A to 95 Shore A; and abrasion resistance in the range of 0.050 to 0.10 cm<3> volume loss measured using the method outlined in ISO-4649-1985(E). Processes of providing the urethane-based coating over the cable jacket are also provided. |
