RESIN COMPOSITION FOR HEAT-SHRINKABLE TUBE, CROSS-LINKED TUBE USING THE SAME, AND HEAT-SHRINKABLE TUBE

摘要

PROBLEM TO BE SOLVED: To provide a heat-shrinkable tube which is made heat-shrinkable at≤230°C and maintains transparency even after heat-shrinkage and is applied as a coating material of a flat electric wire, and to provide a resin composition which is used as a material of the tube. SOLUTION: The invention relates to the fluororesin composition containing: a partially hydrogenated fluororesin comprising at least a tetrafluoro ethylene, a hexafluoro polypropylene and ethylene as constituent monomer units; and a multifunctional monomer, wherein 100% modulus is 1.0 kg/cm2or more at 230°C of a tube sample (0.8 mm film thickness) obtained by heat-shrinking a tube constituted so that a molded product formed in a tube shape from the resin composition is cross-linked by irradiation with an electron beam while the tube is widened twice in diameter at a temperature of a melting point of the partially hydrogenated fluororesin or higher and then further heated to the temperature of the melting point of the partially hydrogenated fluororesin or higher. COPYRIGHT: (C)2011,JPO&INPIT