| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for estimating a degree of deterioration of a high polymer material for easily estimating the degree of deterioration corresponding to tensile strength with a small amount (for example, about 10 mg) of sample. SOLUTION: The relationship between a tensile strength and a crystalline temperature measured by a thermal analyzer is previously obtained for a sample of high polymer material deteriorated under a predetermined condition. Based on the obtained relationship between the tensile strength and the crystalline temperature and a measured crystalline temperature of a subject material of the same kind as the high polymer material measured by the thermal analyzer, the degree of deterioration of the subject high polymer material is diagnosed. COPYRIGHT: (C)2004,JPO
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