| 近红外光谱法测定端羟基环氧乙烷-四氢呋喃共聚醚的羟值 |
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| 引用本文： | 刘发龙,胡伟,程福银,刘治国.近红外光谱法测定端羟基环氧乙烷-四氢呋喃共聚醚的羟值[J].理化检验(化学分册),2012(6):634-637,642. |
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| 作者姓名： | 刘发龙 胡伟 程福银 刘治国 |
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| 作者单位： | 中国航天科技集团公司四院四十二所 |
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| 摘 要： | 提出了用近红外光谱测定端羟基环氧乙烷-四氢呋喃共聚醚(PET)的羟值,结合主成分回归和偏最小二乘法建立了PET羟值与其近红外光谱之间的关联模型。结果表明,近红外光谱法与化学分析法的测定结果一致;近红外光谱法测定PET羟值的相对误差在5%以内;利用遗传算法选择部分波长建立校正可以降低模型的预测误差。
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| 关 键 词： | 近红外光谱法 端羟基环氧乙烷-四氢呋喃共聚醚 羟值 |
NIRS Determination of Hydroxyl Value of PET |
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| LIU Fa-long,HU Wei,CHENG Fu-yin,LIU Zhi-guo.NIRS Determination of Hydroxyl Value of PET[J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,2012(6):634-637,642. |
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| Authors: | LIU Fa-long HU Wei CHENG Fu-yin LIU Zhi-guo |
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| Institution: | (The 42nd Institute of the Fourth Academy of CASC,Xiangyang 441003,China) |
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| Abstract: | A method of NIRS for the determination of hydroxyl value of hydroxyl-terminated ethylene oxide and tetrahydrofuran copolymer(PET) was proposed.Based on the spectral data of PET and by the application of principal component regression(PCR) and partial least square(PLS),a calibration model relating the hydroxyl value of PET to the respective NIR spectra was established.It was found that the results obtained by the present method were in consistency with those obtained by the chemical method.The relative error of results of hydroxyl value obtained by NIRS was within 5%.Error of prediction of the calibration model was reduced by selecting part of wavelengths by the genetic algorithm(GA). |
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| Keywords: | NIRS PET Hydroxyl value |
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