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新技术与新产品 臧亚南 等·波谱分析技术在含氮类有机热稳定剂结构表征中的应用

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Application of popper analysis in structure characterization of nitrogen-
containing organic heat stabilizers

2
1,2
Zang Yanan , Xu Yunhui , Wu Hong 2
(1.China University of Mining and Technology, Xuzhou 221116, Jiangsu, China;
2.Xuzhou Vocational College of Industrial Technology, Xuzhou 221116, Jiangsu, China)
Abstract: Nitrogen-containing organic thermal stabilizers are non-toxic, environmentally friendly and
efficient, and their application in PVC can effectively improve their thermal stability. There are many types of
nitrogen-containing organic thermal stabilizers, and infrared absorption spectroscopy, mass spectrometry and
nuclear magnetic resonance spectroscopy were often used to characterize the structure.
Infrared absorption spectroscopy can qualitatively analyze the structures of different amino groups,
carbonyl groups, carboxyl groups, amide groups, carbon-carbon double bonds and phenyl groups of
nitrogen-containing organic heat stabilizers. Mass spectrometry can accurately determine the relative mass
of nitrogen-containing organic heat stabilizers and help analyze the molecular formula. The NMR spectrum
can accurately analyze the H and C signals, and then determine the structure of the nitrogen-containing
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1
organic thermal stabilizer. Among the three spectral analysis techniques, infrared absorption spectroscopy is
the most commonly used technique to characterize nitrogen-containing organic heat stabilizers. In addition,
the above-mentioned spectral analysis technology can also be used to analyze the structure of PVC
degradation products, and further explore the thermal stability mechanism of nitrogen-containing organic
thermal stabilizers. It provides a powerful means for developing more efficient thermal stabilizers and further
improving the thermal stability of PVC.
Key words: heat stabilizer; structural characterization; spectral analysis technique
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2022 第 48 卷 ·35·
年