| 分光光度法测定有机硅改性聚氨酯涂料印花粘合剂中异氰酸酯基含量 |
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| 引用本文： | 王文波,殷广明,殷承启.分光光度法测定有机硅改性聚氨酯涂料印花粘合剂中异氰酸酯基含量[J].印染助剂,2011,28(7). |
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| 作者姓名： | 王文波 殷广明 殷承启 |
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| 作者单位： | 1. 齐齐哈尔大学分析测试中心,黑龙江齐齐哈尔,161006
2. 江苏省交通规划设计院,江苏南京,210005 |
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| 摘 要： | 在N,N-二甲基甲酰胺(DMF)的冰乙酸(HAc)介质中,异氰酸酯基与N,N-对二甲氨基苯甲醛(DMAB)形成有色化合物,试验确定该有色化合物的最佳吸收波长为445 nm.考察了体系酸度、显色剂用量、显色时间等影响因素,建立了分光光度法测定有机硅改性聚氨酯涂料印花粘合剂中异氰酸酯基含量的定量分析方法.确定的标准曲线线性回归方程为y=0.0177x+0.171 9,相关系数为R<'2>=0.999 6.该方法的回收率为94.29%～104.14%,相对标准偏差小于1%,具有方便、准确的特点.
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| 关 键 词： | 涂料印花粘合剂 有机硅改性聚氨酯 分光光度法 异氰酸酯基 含量测定 |
Determination of isocyanate content in silicone modified polyurethane pigment printing binder by spectrophotometry |
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| WANG Wen-bo,YIN Guang-ming,YIN Cheng-qi.Determination of isocyanate content in silicone modified polyurethane pigment printing binder by spectrophotometry[J].Textile Auxiliaries,2011,28(7). |
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| Authors: | WANG Wen-bo YIN Guang-ming YIN Cheng-qi |
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| Affiliation: | WANG Wen-bo1,YIN Guang-ming1,YIN Cheng-qi2(1.Analysis and Testing Centers,Qiqihar University,Qiqihar 161006,China,2.Jiangsu Traffic Planning and Designing Institute,Nanjing 210005,China) |
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| Abstract: | In N,N-dimethylformamide(DMF) solution with glacial acetic acid(HAc),the collored compound was formed by reaction of isocyanate and N,N-dimethylamino-benzaldehyde(DMAB).The best absorption wavelength of the colored compound was determined at 440 nm through experiments.The acidity of the system,dosages of developer and developing time factors were investigated.The spectrphotometry method was established to detect the content of isocyanate content in silicone-modified polyurethane pigment printing binder.The ... |
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| Keywords: | pigment printing binder silicone-modified polyurethane spectrophotometry isocyanate-group content determination |
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