POLYETHER ETHER KETONE/ POLYPHENYLENE SULFIDE BLEND

摘要

This invention relates to a polymeric composition having a combination of properties that is well suited for coating wires that will be used in applications where the wire will be exposed to high temperatures for extended periods of time. These properties include good tensile strength, modulus, chemical resistance, and flexibility as well as good thermal characteristics. For instance, the polymeric composition of this invention can be manufactured into wires having a continuous use temperature of greater than 180°C and preferably up to about 190°C. The polymeric composition of this invention can also be used to coat wires or produce fibers and filaments using standard techniques and conventional equipment. The polymeric compositions of this invention can be further compounded with glass and minerals to increase the continuous use temperature or molded articles made therewith above 200°C. The present invention more specifically discloses a polymeric composition which is comprised of (a) a polyarylene sulfide resin, (b) a polyaryl-ether-ketone resin, and (c) a graft copolymer of the polyarylene sulfide resin and the polyaryl-ether-ketone resin. These polymeric compositions can be made by reacting an alkoxy silane with the polyarylene sulfide resin and the polyaryl-ether- ketone resin to produce the graft copolymer. It is normally preferred for the alkoxy silane to be an amino silane. The subject invention further reveals an insulated wire comprising (1) an electrical conductor and (2) a layer of polymeric composition surrounding the electrical conductor, wherein the polymeric composition is comprised of (a) a polyarylene sulfide resin, (b) a polyaryl-ether-ketone resin, and (c)a graft copolymer of the polyarylene sulfide resin and the polyaryl-ether-ketone resin.