Accession Number:

AD0673790

Title:

ANTIWEAR PROPERTIES OF STEEL IN THE PRESENCE OF POLYMER POWDERS (PROTIVOIZNOSNYE SVOISTVA STALI V PRISUTSTVII POROSHKOV POLIMEROV),

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Report Date:

1967-10-04

Pagination or Media Count:

13.0

Abstract:

The behavior of powders of the following polymers was studied in friction tests on steel balls polymethyl methacrylate, polypropylene, polyethylene with various contents of CH3 groups, polyvinyl butyral, polystyrene, polyformaldehyde, polytetrafluoroethylene, polyvinyl chloride, polyvinylidene chloride, polyvinyldimethylphenylsilane, polyvinylmethylphenylsilane, and polyallyltrimethylsilane. Under severe friction conditions high loads and slip velocities, the antifriction and antiwear properties of the powdered polymers are determined by a combination of the rheological properties of the polymers and their capacity to modify steel surfaces chemically. Remarkable antiwear properties over the entire range of loads studied were displayed by powders of polypropylene and polyethylene with a maximum degree of branching, and also by polytetrafluoroethylene. The optimum antiwear properties are exhibited by polymers which are sufficiently stable at low temperatures, but are capable of performing the functions of oxygen suppliers and other agents that modify the metal surfaces at high temperatures. Author

Subject Categories:

  • Lubricants and Hydraulic Fluids

Distribution Statement:

APPROVED FOR PUBLIC RELEASE