The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 1978
Filed:
Apr. 23, 1975
Nikolai S Nametkin, Moscow, SU;
Georgy V Vinogradov, Moscow, SU;
Jury Y Podolsky, Moscow, SU;
Nina T Pavlovskaya, Moscow, SU;
Ernest I Frenkin, Moscow, SU;
Jury G Yanovsky, Moscow, SU;
Other;
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.