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[Chemical Knowledge]：Detection Methods and Analysis Techniques of TDI

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TDI, or trimethylene carbamate, is an important chemical, widely used in polyurethane products, coatings, adhesives and other fields. As the demand for TDI increases, more and more attention is paid to its detection methods and analysis techniques.

Let's take a look at the TDI detection method. Common TDI detection methods include gas chromatography (GC), high performance liquid chromatography (HPLC), infrared spectroscopy (IR) and so on. Among them, gas chromatography is the most commonly used method, its principle is to use gas chromatograph to separate and detect TDI, with the advantages of fast detection speed and high accuracy. High performance liquid chromatography is suitable for the detection of samples with low TDI content, and has the characteristics of high sensitivity. The infrared spectral rule can determine the presence or absence of TDI by detecting a specific spectral band, which is suitable for rapid preliminary judgment.

Let's talk about analysis techniques for TDI. The analytical techniques of TDI mainly include spectral analysis, mass spectrometry, nuclear magnetic resonance analysis and other methods. Spectral analysis is the use of different wavelengths of light to analyze TDI, including ultraviolet-visible absorption spectra, fluorescence spectra, etc., can be used to detect the concentration of TDI, structure and other information. Mass spectrometry analysis is to analyze the TDI molecule by mass spectrometer, and its molecular weight, structure and other information can be obtained. Nuclear magnetic resonance analysis is the use of nuclear magnetic resonance instrument to detect TDI, can obtain more detailed structural information.

In addition to the traditional detection methods and analysis techniques, in recent years, with the development of science and technology, some new TDI detection techniques have gradually emerged. For example, the TDI detection method based on machine learning uses big data and artificial intelligence technology to detect TDI quickly and accurately, which greatly improves the detection efficiency and accuracy. The TDI detection method based on biosensor technology has also attracted much attention, and the sensitive detection of TDI by biosensor is fast and convenient.

The detection method and analysis technology of TDI are becoming more and more perfect, covering a variety of traditional and modern technical means, which provides reliable technical support for the production and application of TDI. In the future, with the continuous progress of science and technology, it is believed that the detection methods and analysis techniques of TDI will be more diversified and intelligent, which will inject new vitality into the development of TDI industry.

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