HEAT-RESISTANT CROSSLINKED POLYESTER FIBER AND FIBER CORD

摘要

[Object] To prepare a polyester fiber and fiber cord having an excellent heat resistance which does not generate thermal melting at high temperature while properties such as dimensional stability, high strength and durability are maintained. To provide a material which is useful as a belt for tire and a carcass material. [Means to Solve] A polyester fiber and fiber cord comprising a copolymerized polyester is impregnated with a compound having at least two unsaturated bonds, and is irradiated with electronic ray or ³-ray, whereby the compound causes a cross-linking reaction in the inner area and surface layer of the polyester fiber and fiber cord, which results in a fiber and fiber cord having an excellent heat resistance.