Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-04-23
1978-12-12
Person, Sandra M.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 4232, 260 4238, C08K 304, C08K 330, C08K 338
Patent
active
041295501
ABSTRACT:
A self-lubricating heat-resistant material which, in accordance with the invention, comprises from 20 to 90 percent by weight of a polymer binder, viz. poly(butadiene) with a degree of cross-linking from 30 to 95 percent, and from 10 to 80 percent by weight of an antifriction filler, viz. molybdenum disulphide, graphite, boron nitride or a mixture thereof; said material is produced, in accordance with the invention, by pressing a composition consisting of from 20 to 90 percent by weight of poly(butadiene) of molecular weight between 20,000 and 800,000 and from 10 to 80 percent by weight of said antifriction filler, the process being effected at a temperature in the range from 200.degree. to 330.degree. C. and a pressure of from 1,000 to 7,000 kg/sq.cm.
The self-lubricating heat-resistant material of the invention exhibits thermal stability at temperatures of up to 350.degree. C., a stable coefficient of friction and excellent wear resistance in the temperature range from -150.degree. to +350.degree. C.
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Frenkin Ernest I.
Nametkin Nikolai S.
Pavlovskaya Nina T.
Podolsky Jury Y.
Vinogradov Georgy V.
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