INVESTIGATION OF CLASS B FLEXIBLE ELECTRICAL INSULATING SLEEVING BRAND REX DIVISION, AMERICAN ENKA, MFR.
Abstract
A program of investigation on the newly developed Class B flexible electrical insulating sleevings, which utilize such coatings as the modified polyesters or acrylics, is heing continued at the U. S. Naval Applied Science Laboratory. The object of this work is to study pertinent physical and thermal properties of sleevings which are intended as substitutes for Class B vinyl coated sleevings, to develop methods for the evaluation of thermal endurance characteristics, and to provide a basis for the possible inclusion of these sleevings as a new type under MIL-I-21557 A. The present investigation was performed on size Numbers 18, 12 and 6 of sleevings designated by the manufacturer as Acrylic Sleeving Grade A-1. The sleeving was tan in color, and the coating appeared smooth and uniform. The submitted material appeared to be undercured and was given as additional cure of 3 hours at 150 C, as suggested by the manufacturer. This was intended to impart to the sleeving improved high humidity resistance. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1963
- Accession Number
- AD0426129