Insulated Electric Wire And Manufacturing Method Thereof

Abstract

PROBLEM TO BE SOLVED: To provide a wire exhibiting excellent cut-through characteristics, and having tensile elongation properties, and to provide a method of manufacturing the same. SOLUTION: In the insulated wire where the outer peripheral surface of a conductor is covered with an insulator, the insulator consists of a halogen free flame retardant resin composition containing 1.5 to 7 pts.mass of low density polyethylene (LDPE), 0.9 to 5 pts.mass of pigment and 10 to 30 pts.mass of phosphorous flame retardant for 100 pts.mass of a base resin component containing 30 to 85 pts.mass of polypropylene based resin, 10 to 50 pts.mass of polyphenylene ether based resin and 5 to 30 pts.mass of styrene based elastomer. The halogen free flame retardant resin composition has a phase structure of a sea-island and the phase region corresponding to the island of the phase structure of the island is a region containing low density polyethylene as a main component and having a long diameter of 1.5 μm or more. In the phase region, a phase region consisting of a styrene based elastomer and a polyphenylene ether based resin surrounded by the styrene based elastomer is formed in the shape of an island.

Description

technical field [0001] The present invention relates to an insulated electric wire in which a covered conductor is insulated with a halogen-free flame-retardant resin composition, and a method for producing the same. Background technique [0002] In the internal wiring of OA equipment and electronic equipment such as copiers and printers, a large number of wiring harnesses for power supply and signal transmission are used between printed circuit boards or between printed circuit boards and electronic components such as sensors, actuators, and motors. [0003] A bundled wire is a component that bundles multiple wires or cables and installs terminals such as pluggable connectors at the end. In terms of flame retardancy, electrical insulation, etc., PVC wires using polyvinyl chloride (PVC) as an insulating material are used as wires for wiring. PVC electric wire is excellent in flexibility, so even when it is made into a bundled wire, it is easy to handle. In addition, since i...

AI Technical Summary

Problems solved by technology

[0004] However, since PVC wires contain halogen elements, there is a problem that when the used wire harnesses are incinerated, hydrogen chloride-based toxic gases are generated or dioxins are generated depending on the incineration conditions. Under environmental loads, PVC cannot be said to be the preferred material for insulation

However, these materials are inferior in abrasion resistance and edge resistance (cutting characteristics) compared to PVC, and if these characteristics are improved, there is a problem that the flexibility will decrease and the balance of characteristics will be lost.

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