Accession Number : AD0378203

Title :   EVALUATION OF HIGH-ENERGY BINDER.

Descriptive Note : Quarterly rept. no. 3, 1 Sep-30 Nov 66,

Corporate Author : UNITED TECHNOLOGY CENTER SUNNYVALE CALIF

Personal Author(s) : Allen,Paul L. ; Ives,Edwin K. ; Kumagai,Robert M. ; Asaoka,Leo K.

Report Date : DEC 1966

Pagination or Media Count : 36

Abstract : Work was continued on studying the cure problem of PBEP propellants. It now appears that a rapid reaction between the isocyanate curative and triol crosslinkers is the source of difficulty. It appears possible that this problem became enhanced by a change in PBEP during synthesis scaleup that resulted in a lower reactivity of the hydroxyl groups. Further investigations of the impact sensitivity of PBEP and PBEP propellants were made. No change in previously reported data was found, and it was concluded that neither PBEP nor propellant was unduly impact sensitive. Good cures were obtained on LMH-1/PBEP propellant. Stress of 121 psi and strain of 52% were obtained on an ambient cured system. Preparation of HAP-containing propellant requires a dry atmosphere throughout the complete operation. The cured propellant also must be protected from moisture. Surveillance studies of 2-in. cubes have indicated that DBTDA cure catalyst has better aging characteristics. (Author)

Descriptors :   (*BINDERS, SCIENTIFIC RESEARCH), IMPACT, CONTAMINATION, AGING(MATERIALS), DIFFERENTIAL THERMAL ANALYSIS, BURNING RATE, SYNTHESIS(CHEMISTRY), VACUUM, CATALYSTS, TENSILE PROPERTIES, CROSSLINKING(CHEMISTRY) (U) *SOLID ROCKET PROPELLANT BINDERS, ISOCYANATE PLASTICS, SOLID ROCKET PROPELLANT PLASTICIZERS, SOLID ROCKET OXIDIZERS, FLUOROAMINES, HYDRIDES, ALUMINUM, BERYLLIUM, BORON, TITANIUM, AMMONIUM PERCHLORATE

Subject Categories : Rocket Propellants
      Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE