| 摘要 |
PROBLEM TO BE SOLVED: To provide an evaluating method of a degradation level of polyamide resin, capable of applying to any specimen configuration, measuring the local degradation level, and moreover, correctly and easily evaluating the degradation caused by chemical factors, such as hydrolysis and thermal factors caused by oxygen. SOLUTION: The evaluation method of the degradation level of polyamide resin that includes measuring of visible and ultraviolet light absorbances of the reaction products, by making the alcoholic compound expressed by general chemical formula (I), for example, react with benzyl alcohol, or the mercapto compound replacing -OH by -SH in the formula, for example, benzyl mercaptan, with the polyamide resin. COPYRIGHT: (C)2006,JPO&NCIPI
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