Fluoro-Epoxies as Grinding Aids and Water-Resistant Coupling Agents for Ultrafine Ammonium Perchlorate Powders

Abstract

Highly fluorinated epoxy resins, cured with silicone diamines, have been adsorbed from Freon liquids onto ammonium sulfate (a model for ammonium perchlorate) and cured in place as cross-linked monolayers which can be bonded into the urethane rubber matrix. These materials are found to be excellent grinding aids, allowing a ten-fold reduction in particle size compared to present grinding aids. The stability of surface area when stored in humidity chambers was not bad; two batches stored at 51% relative humidity for six weeks retained 30 square meters per gram with a coating of 2.2 mg/sq. meter, or 1.5 monolayers.

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Document Details

Document Type
Technical Report
Publication Date
Dec 22, 1980
Accession Number
ADA093848

Entities

People

  • Frederick M. Fowkes

Organizations

  • Lehigh University

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Adsorption
  • Ammonium Perchlorate
  • Burning Rate
  • Ceramic Materials
  • Chemical Synthesis
  • Chemistry
  • Combustion
  • Humidity
  • Materials
  • Materials Laboratories
  • Materials Science
  • Military Research
  • Molecules
  • Monomolecular Films
  • Perchlorates
  • Powders
  • Propellants

Readers

  • Analytical Chemistry
  • Mathematics or Statistics
  • Surface Coatings Technology.