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Vehicle-mounted electrical wire and cable

A technology of cables and wires, which is applied in the field of automotive wires and cables, can solve the problems of low strength, hard fluororesin, and problems with wiring layout, and achieve the effect of high flexibility and high heat resistance

Active Publication Date: 2017-02-22
SHOWA ELECTRIC WIRE & CABLE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, fluororesin is very hard, and there will be problems in line layout
In addition, although silicone resin has flexibility, it has low strength and is prone to defects when wiring.
[0005] The aforementioned electric wires and cables for vehicles having sufficiently high heat resistance and sufficiently high flexibility have not yet been obtained

Method used

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  • Vehicle-mounted electrical wire and cable
  • Vehicle-mounted electrical wire and cable
  • Vehicle-mounted electrical wire and cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] 100.0 parts by mass of EEA, 2.5 parts by mass of antioxidant (1), 2.5 parts by mass of antioxidant (2), 10.0 parts by mass of dispersant, 2.0 parts by mass of lubricant (1), 0.5 parts by mass of lubricant (2) Parts by mass, 15.2 parts by mass of a flame retardant, 20.0 parts by mass of a flame retardant aid, 4.0 parts by mass of a metal inert agent (1), and 2.0 parts by mass of a crosslinking aid (1) were uniformly kneaded to obtain a resin composition.

[0097] Then, the resin composition was extruded and coated on a copper twisted wire conductor with an outer diameter of about 3 mm, and cross-linked by electron beam irradiation (30 Mrad radiation dose) to obtain an insulated wire with an outer diameter of about 4.4 mm.

Embodiment 2～9、 comparative example 1～5

[0099] Except that the composition of the resin composition was changed as shown in Table 1, flame-retardant resin compositions were prepared in the same manner as in Example 1, and insulated wires were produced using these compositions.

[0100] Various characteristics of the insulated wires obtained in the aforementioned Examples and Comparative Examples were measured and evaluated by the methods shown below.

[0101] [Mechanical strength (tensile strength)]

[0102]According to JASO (Japan Automobile Technical Association Standard) D 618, for a ring-shaped test piece made by pulling out the inner conductor from an insulated wire with a length of 150mm, under the conditions of a tensile speed of 500mm / min and a punctuation distance of 50mm, measure Tensile strength (MPa) was evaluated based on the following criteria.

[0103] A: Above 20MPa;

[0104] B: More than 10MPa and less than 20MPa;

[0105] C: Less than 10 MPa.

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PUM

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Abstract

A vehicle-mounted electrical wire and cable, in which the outer periphery of a conductor is provided with a covering containing 2.0-9.0 parts by mass of pentaerythritol tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and 2.0-8.0 parts by mass of 2-mercaptobenzimidazole as antioxidants, and comprising a cross-linking body of a resin composition containing 15.0-35.0 parts by mass of 1,2-bis(tetrabromophthalimide)ethane as a flame retardant, the above amounts being given with respect to 100 parts by mass of an ethylene copolymer containing an ethylene-ethyl acrylate copolymer.

Description

technical field [0001] The present invention relates to automotive electric wires and cables excellent in both flexibility and heat resistance. Background technique [0002] In recent years, HEVs (Hybrid Electric Vehicles) that use an electric motor have been rapidly popularized due to increased interest in environmental protection. Wires and cables for HEVs are required to have high heat resistance from the positional relationship of the engine and the electric motor. Specifically, heat resistance that satisfies the required characteristics of ISO 6722 Class D or higher is required. In addition, since it is arranged in a small space at the same time, excellent flexibility is required. [0003] Conventionally, polyvinyl chloride or polyethylene having improved heat resistance by cross-linking has generally been used as a covering material for electric wires and cables for such applications requiring high heat resistance and high flexibility (for example, refer to Patent Do...

Claims

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Application Information

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IPC IPC(8): H01B7/02C08K5/134C08K5/3417C08K5/378C08L23/08H01B3/44H01B7/29H01B7/295
CPCC08K5/134C08K5/3417C08K5/378C08L23/08H01B3/44H01B7/02H01B7/29H01B7/295
Inventor 光地伸明藤田道朝
Owner SHOWA ELECTRIC WIRE & CABLE CO
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