Representative Examples of The Polyamide Are > 자유게시판

The interior coat three of which thickness is about 0.35 mm is coated on the skin floor of the inner cable 1. The surface diameter of the inside coat three is 3.7 mm. The management cable of the present invention includes a conduit having flexibility, the inside surface of which being set up with a liner and an internal cable having an inner coat, and the internal cable is inserted into the conduit in order that the inside cable freely slides within the conduit as mentioned above. Among the above-talked about thermoplastic resins, polybutylene terephthalate having a melt index of 0.1 to 5 g/10 minutes may be notably ideally used because the change of load effectivity is small when the management cable is used for a protracted time period. As an example, a way comprising ading the organopolysiloxane having an ultra-excessive viscosity and the organopolysiloxane having a decrease viscosity individually to the thermoplastic resin whereas heating and kneading the thermoplastic resin and uniformly dispersing them, a technique comprising adding the organopolysiloxane, which is previously prepared by mixing the organopolysiloxane having an extremely-excessive viscosity and the organopolysiloxane having a decrease viscosity in a prescribed proportion, to the melted thermoplastic resin and uniformly dispersing them, and the like can be exemplified.

In the current invention, because the organopolysiloxane having an ultra-excessive viscosity and the organopolysiloxane having a lower viscosity are dispersively contained in the thermoplastic resin used within the above-talked about liner, it is in fact that there is no such thing as a necessity to use a lubricant between the interspace of the conduit and the inside cable, and a wonderful function that the sliding operation of the conduit and the inner cable could be smoothly carried out for a long time frame, is exhibited. The organopolysiloxane comprising the organopolysiloxane having an extremely-excessive viscosity and the organopolysiloxane having a decrease viscosity is dispersively contained within the thermoplastic resin in order that the content material of the organopolysiloxane is thirteen to 20% by weight. When the kinematic viscosity exceeds 10000 cSt, the organopolysiloxane doesn't bleed out from the thermoplastic resin sufficiently, and the load effectivity is lowered. The consultant examples of the organopolysiloxane having a lower viscosity are, for instance, dimethylpolysiloxane, methylalkylpolysiloxane, methylphenylpolysiloxane, methylaminoalkylpolysiloxane, methylfluoroalkylpolysiloxane, and the like.

The everyday examples are, as an example, dimethylpolysiloxane, methylalkylpolysiloxane, methylphenylpolysiloxane, methylaminoalkylpolysiloxane, methylfluoroalkylpolysiloxane, and the like. As a fabric for the inside coat, as an example, Teflon, 11-nylon and the like are used. Among them, dimethylpolysiloxane is particularly preferable from the viewpoint of lubricationability between the thermoplastic resin of the liner and that of the inside coat, thermal resistance, price, and the like. The amounts of the organopolysiloxane having an extremely-high viscosity and the organopolysiloxane having a lower viscosity contained in the thermoplastic resin of the above-mentioned liner are adjusted in order that the organopolysiloxane is composed of forty five to 85% by weight of the organopolysiloxane having an ultra-high viscosity and 55 to 15% by weight of the organopolysiloxane having a decrease viscosity. Accordingly, an organopolysiloxane having an ultra-excessive viscosity and an organopolysiloxane having a decrease viscosity are used in the current invention so as to improve extruding stability during producing a liner and to sufficiently release these organopolysiloxanes on the floor of the resin sufficiently. The management cable has been conventionally used as a way to function a transmission utilized in automobiles, autobicycles, bicycles and the like, a brake, a clutch, a speedmeter, and the like. So as to enhance the load efficiency of a management cable and not using a lubricant, an organopolysiloxane is contained in a resin for a liner or an inside coat, and the organopolysiloxane extides from on the surface of the resin.

When the content of the organopolysiloxane is less than 13% by weight, the load efficiency is lowered when the control cable is used for a protracted time period. When the content material of the organopolysiloxane having an extremely-high viscosity is more than 85% by weight and the content material of the organopolysiloxane having a decrease viscosity is much less that 15% by weight, the effects do not differ a lot from the effects when the organopolysiloxane having an extremely-high viscosity is used solely, and the advance of load effectivity is little. However, when the viscosity of the organopolysiloxane is too high, the amount of the organopolysiloxane which is extided from the floor of the resin is little, and according the load efficiency and durability of the control cable cannot be improved sufficiently. Also, the durability of the above-mentioned management cable largely relies upon upon the lubricant. Also, a synthetic resin coating (hereinafter known as internal coat) is ready on the outer surroundings of the internal cable. However, there are several problems, in the management cable in which a lubricant is used, equivalent to issue of operation for coating because dispersion of the load efficiency of merchandise is attributable to the unevenness of a coating, rubbishes and dusts are easily adhered to the lubricant when applying the lubricant to the management cable, and drip and the like are generated.

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