关键词: 凝聚态物理学 , 石油化学工程 , 时域介电谱 , 小波变换 , 油水混合物

Abstract: At present, the time domain dielectric spectroscopy (TDS) is mainly used to analyse the thin liquid or the substances composed with molecular orderly body. The various relaxation processes desired during using the method are unrelated one another or could be superposable linearly. But the application of traditional TDS is restrained for the analysis of complex heterogeneous mixture. In order to widen its scope of application, an improved method was proposed based on wavelet transform. Through the analysis of the relaxation process of oil-water mixture, the experimental results show that the time domain dielectric spectroscopy based on wavelet transform can exhibit the whole spectrum in-formation of mixture and obtain the various component information in time and frequency domains. Therefore, the TDs method based on wavelet transform can be used for analying oil-water mixture in different oil fields.

Key words: condensed state physics , petrol-chemistry engineering , time domain dielectric spec?troscopy , wavelet transform , oil-water mixture