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Analysis of petroleum resin by pyrolysis gas chromatography - mass spectrometry (Py / GC - MS)

author£ºadmin Date£º2017/2/17 17:14:40
The Py /GC-MS total ion current diagram of the coloring point 80 ¡ãC and the color number 12 # petroleum resin at 350 ¡ãC is shown in Figure 3. Table 3 lists the mass spectrometric results of the petroleum resin pyrolysis products. Lists the relatively high percentage of components, while the lower content of the components are not listed.
As the synthesis of C-9 petroleum resin synthesis of many components of the polymerization between the complex, coupled with the factory production process separation accuracy and polymerization purity of the difference, making the composition of the petroleum resin is more complex and very unstable, 3 petroleum resin GC-MS of the total ion flow diagram can also be confirmed. It can be seen from Fig. 3 that the boiling points of the minor components, such as 1,3-cyclopentadiene, 3-methylstyrene and the like, are in the range of 90 to 120 ¡ã C, Lt; / RTI & gt; According to the area normalization method for quantitative analysis, a total of more than 100 peaks were retrieved, and Table 3 shows the retention time and the percentage of the front area of the 15 compounds with large content. These compounds are mainly pyrolysis units of monomeric or dimeric polymers of styrene, indene, dicyclopentadiene and their homologues. Such as tricyclopentadiene dimer, dicyclopentadiene and phenyl dimer, indene and styrene dimer.