METHOD OF LUBRICATING EQUIPMENT SUBJECTED TO IONISING RADIATION

Patent · Wed Aug 26 04:00:00 EDT 1959

OSTI ID:4206640

Cliffe, J O

A radiation-stable lubricant is offered which consists of an inorganic- gelled mineral oil of viscosity-gravity constant 0.85. In one example 20 kg of silica gel in isopropyl alcohol was washed with a petroleum fraction (b.p. 65 to 95 deg C) until the isopropyl alcohol was below 1 wt.%. This "benzogel" was water proofed by refluxing with 2.5 times as much dimethyldichlorosilane until 98% of the silane was consumed. This was stirred into a lubricating oil of viscosity 117 cs at 100 deg F until silica concentration was 4.5%. After volatile hydrocarbons and unreacted silane were stripped, a grease with halfscale worked penetration of 159 resulted. After 0.5 x 10/sup 18/ neutrons/cm/sup 2/ irradiation the value was 164 and at 1.3 x 10/sup 18/ neutrons/cm/sup 2/ it was 159. Other examples of this type of lubricant are given. (T.R.H.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-14-006737
• OSTI ID: 4206640
• Report Number(s): GB 819023
• Country of Publication: United Kingdom
• Language: English

Related Subjects

ALCOHOLS
COLLOIDS
DENSITY
HYDROCARBONS
LUBRICATION
METALS
CERAMICS AND MATERIALS
MINERALS
NEUTRON BEAMS
OILS
PETROLEUM
QUANTITY RATIO
RADIATION EFFECTS
SILANES
SILICON OXIDES
SOLVENT EXTRACTION
STABILITY
VISCOSITY
VOLATILITY
WATER