Rust-Inhibited Nonreactive Perfluorinated Polymer Greases

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.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1974
Accession Number
AD0781425

Entities

People

  • Joseph Messina

Organizations

  • Frankford Arsenal

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemical Synthesis
  • Chemistry
  • Diameters
  • Engineering
  • Engines
  • Lubricants
  • Lubrication
  • Materials
  • Materials Laboratories
  • Materials Science
  • Polymers
  • Rocket Engines
  • Rocket Oxidizers
  • Rockets
  • Sodium Compounds
  • Spacecraft
  • Vehicles

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Polymer Science and Engineering.
  • Rocket Propulsion.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster