Research on Infrared Spectroscopy in the Structure of Vacuum Pump Oil Base Oil
The structure of vacuum pump oil base oil was explored.The experiments on infrared(MIR)spectroscopy in the structure of vacuum pump base oil(including one-dimensional MIR spectroscopy,second-order derivative MIR spectroscopy,fourth-order derivative MIR spectroscopy,and deconvolution MIR spectroscopy)was conducted.The results showed that the infrared absorption modes of the vacuum pump oil base oil structure mainly include:νasCH3-vacuum pump oil base oil,νasCH2-vacuum pump oil base oil,νsCH3-vacuum pump oil base oil,νsCH2-vacuum pump oil base oil,νC=O-vacuum pump oil base oil,δCH2-vacuum pump oil base oil,δasCH3-vacuum pump oil base oil,δsCH3-vacuum pump oil base oil,β=C-H vacuum pump oil base oil,νC=O-1-vacuum pump oil base oil,νC=O-O-2-vacuum pump oil base oil,νC-C-vacuum pump oil base oil,γ=C-H-vacuum pump oil base oil,and ρCH2-vacuum pump oil base oil.The main components of vacuum pump oil base oil include mineral base oil,PAO base oil,and sebacic acid ester base oil,with PAO base oil having a slightly higher content and sebacic acid ester base oil having a slightly lower content.MIR spectroscopy can quickly conduct struc-tural research on vacuum pump oil base oil.
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