HIGH TEMPERATURE PERFORMANCE AND SLUDGE TENDENCY OF COMMON AMINE ANTI-OXIDANTS

Abstract

Abstract: The oxidation life and sludge deposition trend of turbine oil with different anti-oxidants were investigated by Dry-TOST tests, and the composition of the sludge was analyzed by Fourier transform infrared spectrum (FT-IR), X-ray energy dispersive spectrometry (EDS) and pyrolysis gas chromatograph-mass spectra (PY-GC-MS) to explore the source of the sludge with different anti-oxidants. The results show that N-phenyl-α-naphthylamine has better anti-oxidating performance than alkylated diphenylamine at high temperatures, and the oil added with single anti-oxidant (alkylated diphenylamine or N-phenyl-α-naphthylamine) produces more sludge, but the source of sludge is different. The sludge of turbine oil with alkylated diphenylamine mainly comes from the oxidation product of base oil, while the sludge of turbine oil with N-phenyl-α-naphthylamine mainly comes from the reaction product of anti-oxidant.

Key words: turbine oil, anti-oxidant, sludge, alkylated diphenylamine, N-phenyl-α-naphthylamine

References

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