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Volume 8, Issue 10
Displaying 1-3 of 3 articles from this issue
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Masatomo HASEGAWA1965 Volume 8 Issue 10 Pages 321-325
Published: October 20, 1965
Released on J-STAGE: September 29, 2009
JOURNAL FREE ACCESSDownload PDF (804K) -
Tetsuro IZUMITANI1965 Volume 8 Issue 10 Pages 326-332
Published: October 20, 1965
Released on J-STAGE: September 29, 2009
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Katsuya NAKAYAMA1965 Volume 8 Issue 10 Pages 333-337
Published: October 20, 1965
Released on J-STAGE: September 29, 2009
JOURNAL FREE ACCESSThis brief paper presents the vapoure pressure data of the following fluids used in vacuum pumps : DC 704, DC 705, Apiezon B, Apiezon C, Lion A, Di - 2 -ethylhexyl phthalate (DEHP), Di-2-ethyl- hexyl sebacate (DEHS), Cellulube 220, Cellulube 300, Convalex 10, and OS 124. Measurements have been made in the pressure range of 0. 5 to 20 Torr with the oil-manometer in which the samples themselves are used. It has been previously reported for this method to be most suitable in the case of measuring the vapour pressures of the vacuum pump oils near at a boiler temperature (J. Vac. Soc. Japan 1 222 (1958)). In discussion, the data obtained in study have been compared with those by other investigators. Consequently, it is proved that, this for each sample, all these data measured in the different range of pressure can be suffici-ently plotted on a line expressed by the equation, log P= a-b/T c log T.View full abstractDownload PDF (635K)
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