RESIN COMPOSITION FOR EXTRUSION MOLDING AND METHOD FOR PRODUCING THE SAME, AND INSULATED CABLE EMPLOYING SAID RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a resin composition and method for producing the same that realizes an insulated cable being provided with an extrusion coating layer having a high partial discharge inception voltage and having a good extrusion moldability.SOLUTION: The resin composition comprises a polymer alloy, and is characterized in that the polymer alloy has a sea-island structure and the sea component of the sea-island structure is a polyphenylene sulfide (resin A) and the island component of the sea-island structure is a fluororesin (resin B) having an equivalent circle mean diameter of 10μm or less and the mixture ratio of the resin A and the resin B is 60/40≤(resin A)/(resin B)≤80/20 in weight parts ratio. The resin composition can be applied to the extrusion coating layer 4 of the insulated cable.