Preliminary study of P3O Poly-(2, 6-diphenyl-1, 4-phenylene ether) paper for EHV cable application

摘要

Because of the low power factor available with non-polar polymers considerable interest has arisen in the possible use of polymers for oil-impregnated EHV cables.1–3 It is anticipated that the use of a synthetic paper for such an application will combine the best features of both polymer film and cellulose paper without the disadvantages of either. Developmental sheets of a synthetic paper made from P3O polymer [Poly-2,6-diphenyl-1, 4-phenylene ether)] have been examined for such application. This study describes the dielectric loss characteristics of the dry (i.e., unimpregnated) paper, and some of the factors involved in maintaining the lowest possible dielectric loss when P3O paper was impregnated with polybutene oils.