The tetrafluoroethylene-perfluoroalkylvinyl ether copolymer is prescribed in ASTM D 3307, and has two sorts, i.e. Type I and sort II. The tetrafluoroethylene-hexafluoropropylene copolymer is prescribed in ASTM D 2116, and has four varieties, i.e. Type I to Type IV. It is preferable that the elastomer has an means to be modified so that a softened polyphenylene sulfide, which is ready by mixing with the elastomer and kneading them with melting, has a flexural modulus of at most 30000 (ASTM D 790) and a tensile elongation at break of not less than 5% (ASTM D 638). Representative examples of such an elastomer are, as an example, an olefin copolymer containing an epoxy group (ethylene content material: 88% by weight, glycidyl methacrylate content material: 12% y weight), a hydrogenated styrenebutadience copolymer (TUFTEC M 1913 commercially accessible from Asahi Chemical Industry Co., Ltd.), an ethylene-propylene copolymer (TAFMER PO 680 commercially available from MITSUI PETRO CHEMICAL INDUSTRIES, LTD.), and the like. As a technique for forming an inside coat by using the polyphenylene sulfide, as an example, a melt-extrusion technique and an electrostatic coating technique of powder can be cited. So as to improve the adhesion property between a steel wire and the polyphenylene sulfide, it is preferable that the steel wire is previously coated with a suitable primer.
With respect to Example 22, after a primer FP-001 commercially available from CHUKOH CHEMICAL INDUSTRIES, LTD. Further, it can be seen that the control cable produced in Example 5, during which organopolysiloxane was dispersively contained in thermoplastic resins of each the liner and the interior coat, has bodily properties almost equal to the control cables produced in other Examples, through which organopolysiloxane was dispersively contained only within the thermoplastic resin of the liner. Also, it may be seen that the control cable produced in Comparative Examples, in which organopolysiloxane was contained only within the thermoplastic resin of the interior coat, has low durability. Also, as an alternative of the armor layer 5, the conduit 2 could have a shield layer, which is produced by wrapping plural metallic wires or artificial resin wires on the liner four helically with a protracted lead. The variety of the strands used within the interior cable 1 and the number of the steel wires used in the strand are not notably restricted, and conventionally identified varied mixture thereof could be employed.
Seven steel wires are twisted to obtain one strand, and seven strands are twisted to obtain a wire rope with 7.instances.7 development and an outdoor diameter of 3.0 mm. The surface of the armor 5 is coated with the protecting layer 6 having a thickness of 0.7 mm. Next, the liner was inserted into a conduit having a protective layer made from polypropylene of 0.7 mm in thickness on the surface floor of a springy armor layer having an out of doors diameter of 8.6 mm. The internal coat three of which thickness is about 0.35 mm is coated on the outside surface of the inner cable 1. The skin diameter of the interior coat 3 is 3.7 mm. A thermoplastic resin proven in Tables 1 to four was heated to melt, and the organopolysiloxane obtained within the above was added thereto in a proportion proven in Tables 1 to 4. After they have been uniformly kneaded, a liner having an inside diameter of 4.6 mm and an outside diameter of 5.6 mm was molded. The conduit 2 is composed of an armor layer 5 and a protective layer 6 of a artificial resin corresponding to polypropylene.
Within the protecting layer 6, varied materials conventionally identified corresponding to polypropylene and polyvinyl chloride can be used. Rubber cable is known to be resistant to many natural and common supplies and chemicals. Elevator touring cable is a crucial link between the elevator automotive and controller. With the help of advanced manufacturing gear and greater than 30 years skilled expertise, We are specialized in manufacturing Elevator Cable, Crane Cable, Armored Cable, Welding Cable Manufacturer. Welcome to contact us for Elevator Cable, Crane Cable, Armored Cable, Welding Cable, Control Cable & Power Cable. Submersible cable is specifically designed to supply power to underwater purposes. Also, since a liner containing a selected organopolysiloxane is used in the management cable of the current invention, excellent load effectivity is continued for a protracted time period. The polybutylene terephthalate also has a characteristic that the difference of the preliminary load effectivity and the load efficiency after the management cable is operated for a protracted time period is small. As is evident from the results shown in Tables 1 to 4, the management cables of the current invention produced in Examples are excellent in preliminary load efficiency and load effectivity after the operation was carried out 1,000,000 instances in comparison with the control cables produced in Comparative Examples when both the type of the thermoplastic resin used in the liner in Examples and that in Comparative Examples are the identical.