ASTM D2668红外线吸收法测定电绝缘油中2,6-二叔丁基对甲酚和2,6-二叔丁基对苯酚的标准试验方法
日期:2012-02-10 11:14
ces pronounced increases in absorbance at 2.72 m (3650 cm1) and 13.42 m (745 cm1).
When making this test on other than a highly oxidized oil or when using a double-beam spectrophotometer, it has been found convenient to obtain the spectrum between 2.5 m (4000 cm1) and 2.9 m (3450 cm1) because the instrument is compensated for the presence of moisture and the band is not influenced by intermolecular forces (associations). However, when testing a highly oxidized oil or when using a single-beam ins
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