| 聚氨酯中游离—NCO 分析的研究 |
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| 引用本文： | 杨忠琳,朱永群. 聚氨酯中游离—NCO 分析的研究[J]. 浙江理工大学学报, 1991, 0(3) |
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| 作者姓名： | 杨忠琳 朱永群 |
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| 作者单位： | 浙江丝绸工学院染化系，杭州大学化学系 |
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| 摘 要： | 本文介绍了在醋酸酸性条件下,以 P-N,N-二甲氨基苯甲醛(DMAB)为显色剂,N,N-二甲基甲酰胺(DMF)为溶剂,用分光光度法测定聚氨酯中残留游离-NCO 基的方法。大量试样的测定结果表明,当-NCO在10~1～10~3ppm 范围内,该方法的相对标准偏差在5%左右,分析准确度和精密度得到满意的结果。
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| 关 键 词： | 聚氨酯 异氰酸酯 分光光度法 |
Studies on the Analysis of Free Isocyanate in Polyurethane |
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| Yang Zhonglin. Studies on the Analysis of Free Isocyanate in Polyurethane[J]. Journal of Zhejiang Sci-tech University, 1991, 0(3) |
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| Authors: | Yang Zhonglin |
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| Abstract: | Recommends the determination method of free NCO group in polyure- thane by optical spectroscopy with DMF as solvent and P-N,N-dimethylamin- obenzaldehyde as dyestuff in the acidulating condition of acetic acid.The determination results of a series of samples show that the relative standard deviations are 4%-6% when the content of the NCO group is within the range of 10~1-10~3 ppm.This determination method is rapid,simple and acc- urate. |
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| Keywords: | Polyurethane Isocyanate Optical Spectroscopy |
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