Fluoro-Epoxies as Grinding Aids and Water-Resistant Coupling Agents for Ultrafine Ammonium Perchlorate Powders
LEHIGH UNIV BETHLEHEM PA DEPT OF CHEMISTRY
Pagination or Media Count:
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 mgsq. meter, or 1.5 monolayers.
- Coatings, Colorants and Finishes
- Solid Rocket Propellants