Accession Number:

ADP000590

Title:

A New Construction of Halogen-Free Flame Retardant Insulated Wire with Double Layers

Descriptive Note:

Corporate Author:

FURUKAWA ELECTRIC CO LTD TOKYO (JAPAN)

Report Date:

1982-11-01

Pagination or Media Count:

7.0

Abstract:

To protect peripheral equipment from corrosive gaseous HC1 and prevent formation of black smoke and toxic gases during combustion of halogen compounds, a few halogen-free materials with highly flame retardant properties have so far been studied for cable use in nuclear power plants, underground railways and ships. For internal wiring in appliances, however, halogen-free insulated wires that pass the flame test of UL Std.62 VW-1 have not been developed. Flame retardant XL-PVC or XL-FRPE insulated wires now in use produce halogen gases when the wires are used at high temperature for a long term, thereby corroding the periphery equipment. Amplifier relay circuits, which are liable to excessive temperature rise, pose an especially difficult problem.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE