Anyway, I have done a lot of infrared, but I haven't done it, seen it or heard it. . . Redfoxwenfan (in-station contact TA) infrared energy can be used for quantitative analysis, and some standard samples are needed to compile macros. Infrared spectrum is often used for qualitative and quantitative analysis of plastic components. After scanning the sample spectrum, the contents of various components can be obtained by running the macro. Also remind, infrared quantization is not a very accurate result. If your requirements are not very good, you can consider jack2070 (contact TA in the station). It seems strange to make a quantitative comparison with IR. The product (in-station contact TA) can be quantified, but the conditions are harsh. MENG_ML (in-station contact ta) is very troublesome to quantify. lcazzapple (in-station contact TA)IR can of course quantify. Is it strange? Ypf 13 (in-station contact TA) infrared quantization, the key problem is the instrument! Using ordinary infrared spectrum for transmission and quantification is of course not allowed, but using online infrared spectrometer can be quantified according to the principle of attenuated total reflection. Now there are formal instruments, which are sold in mettler and other manufacturers. Look online for yourself. Of course, it is not allowed to use a common spectrometer for total reflection and quantization. I have seen the quantification of PU in Zhejiang University. Journal of Chemical Industry, Vol.60, No.2160no12 February 2009 Research Paper of Journal of CIESC February 2009 (I) Competition of Addition/Hydrolysis Reaction Zhan Xiaoli, Chen Fengqiu (Institute of Chemical Reaction Engineering, Zhejiang University, Hangzhou, Zhejiang 3 10027) Abstract: Waterborne polyurethane was prepared by in-situ miniemulsion polymerization of isophorone diisocyanate (IPDI) and hydrophobic diol. The structure of the polymerization product was characterized by FTIR quantitative analysis method, and the main reaction (addition polymerization) and side reaction (reaction) were studied by the concentration ratio of urethane bond/urea bond in the product. The effects of hydrophobic diol, vinyl monomer, reaction temperature, catalyst and emulsifier on the competition of main and secondary reactions were investigated, and a physical model of addition polymerization and hydrolysis competition in miniemulsion was established. It was found that the higher the reactivity of diol, the better the addition polymerization reaction. The introduction of vinyl monomer can inhibit the hydrolysis reaction and promote the addition polymerization reaction. The smaller its water solubility, the easier it is for the addition polymerization reaction to dominate the competition. Reducing reaction temperature and increasing catalyst concentration can promote addition polymerization and inhibit hydrolysis reaction. Key words: polyurethane; Fine emulsion; Isophorone diisocyanate; Quantitative infrared characterization of hydrolysis reaction Shi Ying, Zhang Xiaoli, Luo Zhenhuan, Zhang Qinghua, Chen Fengqiu 1 urea Can you say that infrared can be routinely used for quantification like ultraviolet? That's interesting. Especially solid tablet, is quantification feasible? Lakeside 306 (TA in the contact station) Yes. That makes sense. Infrared is basically used to see the composition. . .