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| HG/T 2409-2023 Determination of isocyanate group content in polyurethane prepolymer (English Version) |
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Detail of HG/T 2409-2023
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Introduction of HG/T 2409-2023
本文件规定了聚氨酯预聚体或中间产物中异氰酸酯基（NCO）含量的两种测定方法：方法A，二正丁胺-无水甲苯/盐酸标准滴定溶液法；方法B，近红外光谱法。
本文件适用于聚氨酯预聚体的生产企业或相关方使用二正丁胺-无水甲苯/盐酸标准滴定溶液法和近红外光谱法对产品中的异氰酸酯基（NCO）含量进行测定，也可用于相关单位对该类产品进行研究、质量控制。
Contents of HG/T 2409-2023