| 摘要 |
PROBLEM TO BE SOLVED: To provide a tube having a superior tear characteristic and a high thermal contraction coefficient under a low temperature.SOLUTION: This is a polymer in which fluorine resin is made of at least three types of monomers. As a unit of composing monomer, it is composed of mixtures of resins of different kinds including at least tetrafluoroethylene and hexafluoropropylene, it has a tear characteristic in which amount of change &Dgr;E loss of loss energy when the temperature changes from 175°C to 185°C shows a positive value. |
