THE DEVELOPMENT AND EVALUATION OF A HYDROCARBON BINDER FOR HIGH ENERGY SOLID PROPELLANTS

Abstract

The study of saturated prepolymers as propellant binder ingredients was centered predominantly on partially (50-60%) saturated prepolymers. The partially saturated propellants showed a threefold improvement of properties at -75F. The type of crosslinker did not affect the properties in a major fashion. The study of a polyether triol which improved the low temperature properties of partially saturated propellants is continuing. The oxidative surface hardening of binders made with saturated, partially saturated, and unsaturated prepolymers was investigated. The saturated binders showed no surface hardening after eight weeks at 80C. Initially, the partially saturated binder hardened more rapidly than the unsaturated one, but the difference decreased with time. After eight weeks the unsaturated binder was hardening more rapidly. Propellant stability was greatly improved by a copper (II) additive and the feasibility of isocyanate-cured propellants for very high temperature use was demonstrated. The use of blocked isocyanates as cure agents for propellants with advanced oxidizers was studied in model systems. Carbamates which dissociate at 60C to produce isocyanate were tested in the presence of oxidizers. Tin catalysts help and oxidizers inhibit the cure reaction.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1968
Accession Number
AD0830350

Entities

People

  • Anthony J. Di Milo
  • Rodney H. Quacchia

Organizations

  • Aerojet Rocketdyne Holdings

Tags

DTIC Thesaurus Topics

  • Additives (Chemicals)
  • Air Force
  • Catalysts
  • Hardening
  • High Energy
  • High Temperature
  • Infrared Spectra
  • Isocyanates
  • Low Temperature
  • Materials
  • Mechanical Properties
  • Phase
  • Propellants
  • Rocket Propulsion
  • Solid Propellants
  • Tensile Properties
  • Tensile Strength

Readers

  • Polymer Science and Engineering.
  • Rocket Propulsion.