标准编号：ISO 15064:2010
中文名称：塑料 聚氨酯生产用芳香异氰酸酯 甲苯二异氰酸酯中异构体比例的测定
英文名称：Plastics — Aromatic isocyanates for use in the production of polyurethanes — Determination of the isomer ratio in toluenediisocyanate
发布日期：2010-12
标准范围
This International Standard specifies methods for the measurement of toluene-2,6-diisocyanate in mixtures of the 2,4- and 2,6-isomers. Two methods based on infrared spectroscopy are required to give accurate results over a broad range of isomer concentrations. Method A is applicable to TDI samples containing 5 % to 95 % of the 2,6-isomer. Method B is applicable to TDI samples containing 0 % to 5 % of the 2,6-isomer. Both methods are based on the quantitative measurement of absorption bands arising from out-of-plane C-H deformation vibrations of the aromatic ring at 810 cm -1 and 782 cm -1 (12,3 μm and 13,8 μm).
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