Preparation and performance characterization of temperature‐sensitive JP‐3 kerosene gel propellant

Abstract

Two types of JP‐3 kerosene gels were prepared using AC−C10 (N‐acetyl‐L‐isoleucyl decylamine, type A) and modified hydrogenated castor oil (type B) as gelling agents, and the gel formation mechanism between the two gelling agents and JP‐3 kerosene was investigated. The rheological properties of the gels, including stability, yield stress, shear thinning, and thixotropic behavior, were tested and discussed. The viscosity curves were fitted with the HBE constitutive equation and compared with the power‐law model. Non‐time‐dependent, time‐dependent, and temperature‐dependent constitutive equations of the kerosene gels were constructed. The effects of time and temperature on viscosity were analyzed. The results showed that the type B JP‐3 kerosene gel was more physically stable and less influenced by centrifugal force. Both types of gels exhibited a decrease in viscosity with increasing shear rate, indicating shear thinning behavior. Additionally, both gels demonstrated some degree of thixotropy, although the recoagulation was found to be weak. With an increase in temperature, the viscosity of the type A gel initially decreased, then increased, and finally decreased again until it approached the viscosity of kerosene at 75 °C. On the other hand, the viscosity of the type B kerosene gel gradually decreased and approached the viscosity of kerosene at 75 °C. Both types of gels exhibited high temperature sensitivity.