Accession Number:

AD0781425

Title:

Rust-Inhibited Nonreactive Perfluorinated Polymer Greases

Descriptive Note:

Corporate Author:

FRANKFORD ARSENAL PHILADELPHIA PA

Personal Author(s):

• Messina, Joseph

Report Date:

1974-03-01

Pagination or Media Count:

9.0

Abstract:

Perfluoroalkylpolyether fluids thickened with polytetrafluoroethylene were studied in connection with the development of rust-inhibited chemically inert greases for liquid-fueled rocket engines. It was found that 1.0 to 3.0 wt. percent of a physically and chemically modified organophilic dimethyloctadecylbenzyl ammonium bentonite sodium nitrate imparts very effective rust-preventive properties to perfluoro polymer grease mixtures. Data are given which show that the rust-inhibited greases are nonreactive on contact with conventional fuels and oxidizers, exhibit lubricating properties comparable to soap-thickened greases with a significant improvement in extreme pressure properties, and are nonreactive at high impact energies in the presence of LOX. The results of this work are applicable to all liquid-fueled rocket engines for missiles and space vehicles.

Descriptors:

• *POLYMERS
• CORROSION INHIBITION
• LIQUID PROPELLANT ROCKET ENGINES
• RUST(OXIDATION)
• INHIBITORS
• FLUORINATED HYDROCARBONS
• TETRAFLUOROETHYLENE RESINS
• NITRITES
• REPRINTS
• ETHERS

Subject Categories:

• Lubricants and Hydraulic Fluids

Distribution Statement:

APPROVED FOR PUBLIC RELEASE