聚氨酯涂料中TDI游离单体的气相色谱分析法

Determination of the free TDI content in PU coatings by gas chromatographic analysis

叙述用气相色谱仪 ,氢火焰检测器 ,经过 10 %SE - 30 /chromosorb W AW DMCS色谱柱将涂料中残留的甲苯二异氰酸酯单体 (TDI)分离后 ,以正十四烷作内标物 ,进行定量的分析方法。

By using a gas chromatographic analyzer and hydrogen flame detector,and passing through a 10% SE-30/.chromosorb W.AW.DMCS column,our mat separate the residual free TDI from the coatings mixture.We may carry out a volumetric analysis this way by using n-tetradecane as a inner standard.