|Dimethylether (DME) and its Seal Materials
Nippon Gomu Kyokaishi,(2005),78(3),111-118 General Review in Japanese
DME (dimethylether) has currently been used for aerosol and is expected to be provided as a fuel in and after 2006 when many projects related with DME starts. Since DME contains oxygen atom in its molecules and does not contains any sulfur compounds, it may have superiorities as a soot-free fuel. From the economical point of view, it will be reasonable to use infrastructure for liquefied petroleum gas (LPG), because the physical properties of DME are close to those of LPG. On the other hand, it is necessary to check the suitability of common rubber and plastic used as sealing materials, since the chemical structure and properties of LPG and DME are different. From various types of screening test, it has come to clear that PTFE, compressed sheet gaskets and FFKM are promising against both LPG and DME. IIR, HNBR, NBR, and other elastic materials are, however, necessary to be evaluated in both LPG and DME before use.
dimethylether, DME, LPG, fuel, seals,