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Electric wire manufacturing method and cable manufacturing method

A manufacturing method and technology of electric wires, applied in the direction of cable/conductor manufacturing, conductor/cable insulation, circuit, etc., can solve problems such as interlayer peeling, poor dispersion, strength drop, etc., and achieve the effect of excellent mechanical properties and heat resistance

Inactive Publication Date: 2020-09-01
HITACHI METALS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the affinity between fluororubber and fluororesin is low, simply melting and kneading fluororubber and fluororesin will cause problems such as poor dispersion, delamination, and strength drop.

Method used

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  • Electric wire manufacturing method and cable manufacturing method
  • Electric wire manufacturing method and cable manufacturing method
  • Electric wire manufacturing method and cable manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0055] Hereinafter, the configuration and manufacturing method of an electric wire (insulated electric wire) and a cable according to an embodiment of the present invention will be described. figure 1 To show the flow of the manufacturing process of electric wires and cables according to one embodiment of the present invention; figure 2 for display figure 1 In the flow shown, the flow of the production process of the thermoplastic fluororesin composition; image 3 for display figure 1 In the flow shown, the flow of the coating process of wires and cables. Figure 4 A cross-sectional view showing an electric wire according to an embodiment of the present invention; Figure 5 It is a cross-sectional view showing a cable according to one embodiment of the present invention. Figure 6 A schematic diagram showing an extrusion coating device for manufacturing a wire or cable according to an embodiment of the present invention; Figure 7 for display Figure 6 In the extrusion ...

Embodiment 1

[0157] [Summary of Embodiment 1 and Embodiment 2]

[0158] Example 1 and Example 2 will be described below. Example 1 and Example 2 are electric wires manufactured by the manufacturing method of the present embodiment described above, corresponding to Figure 4 Wire 10 is shown.

Embodiment 2

[0159]

[0160] as Figure 4 Conductor 1 shown, using a cross-sectional area of ​​2mm 2 nickel-plated stranded conductors. In addition, raw materials constituting the thermoplastic fluororesin composition constituting the insulating layer 2 of Example 1 and Example 2 are as follows.

[0161] (A) Viton rubber: DS246 (hexafluoropropylene / vinylidene fluoride binary copolymer, made in China, specific gravity 1.86, Mooney viscosity 75)

[0162] (B) Fluorine resin:

[0163] (B1) F1540 (copolymer of trifluoro(trifluoromethoxy)ethylene and tetrafluoroethylene, manufactured by Solvay, MFR (melt flow rate) 8 to 18 g / 10 min, melting point 270° C.)

[0164] (B2) M640 (trifluoro(trifluoromethoxy)ethylene and 1,1,1,2,2,3,3-heptafluoro-3-[(trifluorovinyl)oxy]propane with tetrafluoroethylene Copolymer made by Solvay, MFR10~17g / 10min, melting point 285°C)

[0165] (B3) AP-201 (copolymer of trifluoro(trifluoroethoxy)ethylene and tetrafluoroethylene, manufactured by Daikin Industries, MFR...

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Abstract

The present invention provides an electric wire manufacturing method and a cable manufacturing method. A thermoplastic fluororesin composition is used, and the electric wire and the cable have excellent mechanical properties and heat resistance. The electric wire manufacturing method comprises (S21) a step for extruding the thermoplastic fluororesin composition so as to cover the periphery of a conductor, and (S22) a step for forming an insulating layer around the conductor by drawing the thermoplastic fluororesin composition extruded in the extrusion step (S21). The thermoplastic fluororesincomposition contains a fluororubber, a fluororesin and a compatibilizing agent, the fluororesin contains a perfluoroalkoxy alkane having a melting point of 300 DEG C or more and less than 310 DEG C, and the fluororubber is crosslinked by dynamic crosslinking in the thermoplastic fluororesin composition. The extrusion step (S21) is performed at a temperature equal to or higher than the melting point of the perfluoroalkoxy alkane and lower than the melting point + 10 DEG C.

Description

technical field [0001] The present invention relates to a method of manufacturing electric wires and a method of manufacturing cables. Background technique [0002] The electric wire has a conductor and an insulating layer as a covering material provided around the conductor. In addition, the cable has the aforementioned electric wires and a sheath (outer coating layer) as a covering material provided around the aforementioned electric wires. The aforementioned sheath is arranged around the aforementioned insulating layer. [0003] The covering material such as the insulating layer of the electric wire and the sheath of the electric cable is composed of an electrically insulating material mainly made of rubber or resin. As an example of the electrical insulating material, there is a thermoplastic elastomer (Thermoplastic Elastomer: TPE). In particular, examples of thermoplastic elastomers excellent in heat resistance and chemical resistance include thermoplastic fluorores...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/20C08L27/18C08K3/22H01B13/14H01B13/24
CPCC08K2003/222C08L27/20C08L2201/08C08L2203/202C08L2205/02C08L2205/025C08L2205/035H01B13/148H01B13/24C08L27/18C08K3/22
Inventor 关育雄青山贵
Owner HITACHI METALS LTD
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