Accession Number : ADA305317
Title : Friction and Wear of Poly(Amide-Imide), Polyimide, and Pyrrone Polymers at 260 deg C (500 deg F) in Dry Air.
Descriptive Note : Technical note,
Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER
Personal Author(s) : Jones, William R., Jr. ; Hady, William F. ; Johnson, Robert L.
PDF Url : ADA305317
Report Date : MAY 1971
Pagination or Media Count : 19
Abstract : A pin-on-disk sliding friction apparatus was used to determine the friction and wear of (1) a poly(amide-imide), (2) a polyimide, and (3) a pyrrone in dry air at 260C (500F). Low wear was obtained with a pyrrone, intermediate wear with a polyimide, and very high wear with a poly(amide-imide). All three polymers exhibited low (<0. 20) coefficients of friction. The poly(amide-imide) exhibited thermal degradation at 260C (500F). Experiments were conducted using a hemispherically tipped rider (pure polymer) sliding on a rotating steel disk. Other conditions included a sliding speed of 10 m/min (390 in. /min), a 1. 5-kg load, and a mineral oil lubricant.
Descriptors : *POLYMERS, *SLIDING FRICTION, PLASTIC DEFORMATION, HIGH TEMPERATURE, ANHYDRIDES, THERMAL STABILITY, WEAR, AROMATIC HYDROCARBONS, MINERAL OILS, THERMAL DEGRADATION, SEALING COMPOUNDS, LUBRICATION, OLIGOMERS, CONDENSATION, HETEROCYCLIC COMPOUNDS, POLYIMIDE RESINS.
Subject Categories : Polymer Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE