定性定量分析PVC 材料及其制品的方法（Methods for qualitative and quantitative analysis of PVC materials and their products）.docVIP

定性定量分析PVC 材料及其制品的方法（Methods for qualitative and quantitative analysis of PVC materials and their products） The key problem in infrared quantification is instrumentation! With ordinary infrared spectrum for transmission, quantitative, of course not allowed But using an online infrared spectrometer, based on the principle of attenuated total reflection, can be quantified Now there are regular instruments out, Mettler sold, other manufacturers also have their own on-line check it Of course, the use of a common spectrometer for total reflection is not allowed Quantitative analysis of infrared light requires the preparation of some standard samples. The composition analysis in plastics is often determined by infrared spectroscopy, You can get the content of various components by running the macro, and also remind you that infrared quantification is not a very accurate result. If your requirements are not very practical, you can consider them Application of infrared spectroscopy in quantitative analysis of polyethylene plastics Li Jianjun A rapid qualitative and quantitative analysis method for PVC materials and their products The methods of rapid qualitative and quantitative analysis of PVC materials and their products by infrared spectrum analysis and thermogravimetry are introduced in detail. For unknown sample by pyrolysis method like infrared spectrum analysis and preliminary qualitative method, dissolved IR analysis verification; PVC material thermal decomposition process is complicated, not directly from the TG test results (TG curve) read on the content of each component of the test results through the linear regression equation to calculate the content of PVC. The content of PVC is 35% ~ 80% range has a good linear relationship (R=0.9983). Compared with the traditional separation and analysis methods, this method has the advantages of convenience and speed and accurate analysis results. Keywords infrared spectrum; thermogravimetric analysis; PVC; qualitative and