Chinese Optics Letters, 2011, 9 (11): 110010, Published Online: Nov. 4, 2011
Diffusion interaction and quantitative analysis of zinc dialkyldithiophosphate content in lube base oils in terahertz regime Download: 531次
070.4340 Nonlinear optical signal processing 160.4760 Optical properties 190.4400 Nonlinear optics, materials 300.6495 Spectroscopy, teraherz
Abstract
We investigate the diffusion interaction and quantitative analysis of zinc dialkyldithiophosphate (ZDDP) mixed with lube base oil (LBO) at different concentrations using terahertz time-domain spectroscopy (THz-TDS). When the concentration exceeds 6.78%, the characteristic absorption peaks exhibit significantly shift, and the absorption coefficient peak value is nonlinear against concentration. Moreover, the absorption coefficients of mixed samples follow the Beer's law at a concentration below 6.78%. The quantitative analysis enables a strategy for monitoring the formulation of lubricating oil in real time.
Lu Tian, Kun Zhao, Qingli Zhou, Yulei Shi, Dongmei Zhao, Cunlin Zhang, Songqing Zhao. Diffusion interaction and quantitative analysis of zinc dialkyldithiophosphate content in lube base oils in terahertz regime[J]. Chinese Optics Letters, 2011, 9(11): 110010.