Tensile Properties of Plastic Propellant Icp 200-P129 with Cis 1.4 Polyisoprene

摘要

The rheological properties of a solid propellant based on a binder consisting of cis 1.4 Polyisoprene plasticized with Dioctyl Sebacate are studied. Tensile tests were made on dumb bell specimens cut from 10 mm sheets. Test temperatures from -70 to +70 C and several crosshead speeds were used. The Williams-Landel-Ferry equation is found to apply satisfactorily to the uniaxial tensile properties of the propellant. A tendency for reduction in strength with increasing temperature due to heat aging counteracting the normal softening effect is shown.