Chemical Structural Aging Effects.
Special interim technical rept.,
THIOKOL CHEMICAL CORP BRIGHAM CITY UTAH WASATCH DIV
Pagination or Media Count:
During the past ten years of solid propellant development, the problem of predicting motor service life from propellant viscoelastic behavior and accelerated aging data has persisted. The basic theory for converting elevated temperature aging results to long term equivalent ambient aging predictions depends upon either a single chemical reaction or competing reactions having the same reaction rates and activation energies. Each chemical reaction occurring during cure and aging of the solid propellant contributes by either increasing or decreasing the tensile strength of the material. While it is not possible to control the chemical reactions in such a fashion that its contribution to the material mechanical properties can be determined, a procedure is presented to determine these individual reaction effects using a mathematical correlation of the chemical reaction rate and mechanical properties data. A sample computation is presented using limited data available. Author
- Solid Rocket Propellants