Accession Number:

AD0770028

Title:

Friction and Wear Characteristics of Some Graphite Fiber Reinforced Plastic Composites.

Descriptive Note:

Technical rept. Jan 68-Dec 71,

Corporate Author:

AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

• McConnell,Bobby O.
• Dauksys,Richard J.

Report Date:

1973-07-01

Pagination or Media Count:

36.0

Abstract:

A series of fiber reinforced composites were investigated to determine their tribological properties under unidirectional sliding motion. The composite formulations consisted of graphite fibers of varying properties and three resin matrices. The graphite fibers selected for study included Thornel 25, Thornel 40, and Thornel 50, and were fabricated into test panels utilizing an epoxy, a phenolic, and a polyimide resin. The resulting composite panels were used to provide friction and wear specimens of varying fiber orientation for evaluation in a dual rub-shoe test device with the composite block specimens sliding against a rotating metal specimen. Environmental test conditions selected for these evaluations consisted of evaluation in air at 75, 250 and 500 F under a speed of 600 rpm and a load of 50 pounds, sliding against a 440C STAINLESS STEEL BEARING SPECIMEN. Author-PL

Descriptors:

• *Composite materials
• *Solid lubricants
• Carbon fibers
• Graphite
• Epoxy resins
• Fiber reinforcement
• Polyimide resins
• Phenolic plastics
• Friction
• Wear
• Molybdenum compounds
• Sulfides
• Bearings

Subject Categories:

• Laminates and Composite Materials
• Lubricants and Hydraulic Fluids

Distribution Statement:

APPROVED FOR PUBLIC RELEASE