ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

The stabilization of oils for electric insulation with vapors of resin acids. II. Technical

A.Tkáč

Slovak Technical University, Bratislava

Abstract: A new continuous and fully automatic process for the prepn. of impregnation materials for high-tension cables up to 110 kv. was described. Freshly refined mineral oil with a low oxidn. stability is stabilized with vapors of resin acids derived from vacuum distn. (0.5 mm. Hg) of the raw resin. A macroturbulent film is formed by turning a metal spiral whose rings move against the flow of molten resin, freed of resin oils and flowing to the distn. area. The distn. of the resin and the final refining of oils occur at the same time.

Full paper in Portable Document Format: 168a612.pdf (in Slovak)

Chemical Papers 16 (8) 612–624 (1962)