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A Study on Field Application of 2,2,2-trifluoroethanol (TFEA) as an Alternative Cleaning Agent  

Bae, Jae-Heum (Department of Chemical Engineering, The University of Suwon)
Park, Jin-Hee (Environment & Process Technology Division, KIST)
Cha, An-Jeong (Environment & Process Technology Division, KIST)
Kim, Hong-Gon (Environment & Process Technology Division, KIST)
Publication Information
Applied Chemistry for Engineering / v.15, no.7, 2004 , pp. 773-778 More about this Journal
Abstract
2,2,2-trifluoroethanol (TFEA), which is a good solvent for organic materials, having zero ozone depletion potential was synthesized in our research group. Physical properties and the cleaning efficiency of the TFEA were compared with those of halogenated cleaning agents and alcohol cleaning agents through various experimental tests. TFEA was expected to have higher cleaning efficiency than other agents probably due to large value of its wetting index that is one of parameters used for selecting good cleaning agents. In the cleaning efficiency tests, however, TFEA showed somewhat lower cleaning efficiency than commercial cleaning solvents in removing fluxes, cutting oils, greases and waxes. On the other hand, TFEA showed a good cleaning efficiency as much as CFC-113 and 1,1,1-trichloroethane in removing polyfluoropolyether oils. And TFEA exhibited a good performance enough to replace methylene chloride (MC) and N-methyl-prrolidone (NMP) in depainting acryl urethanes and non-solvent epoxy agents. TFEA also showed almost the same cleaning ability in removing the photoresist from the wafer surface within 3 min as NMP did. Thus, TFEA seemed to be one of promising alternative cleaning agents in some cleaning processes.
Keywords
TFEA; alternative cleaning agent; industrial cleaning;
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