Characterization of K125/Diethyl Malonate Solutions Used as Simulants for Thickened GD

摘要

The fact that thickened chemical agents constitute an appreciable percentage of the USSR chemical arsenal was supported by the display of munitions containing thickened VX, thickened GD and thickened Lewisite at Shikhany. The proposed US binary VX and GD munitions will also be thickened. Therefore, a knowledge of the characteristics of thickened agents is essential in order to develop adequate protective equipment and defensive postures. To facilitate these studies, especially large scale dissemination trials, several thickened simulants have been developed. This report report describes the characterization of solutions of diethyl malonate thickened with the acryloid polymer K125-EA, which are used to simulate thickened GD in dissemination trials. The properties measured are required to correlate with and predict dissemination characteristics such as drop size. Density and surface tension were measured as a function of concentration at 25C. Viscosity and first normal stress difference in steady shear and storage and loss moduli in dynamic mode were measured as a function of concentration and temperature. Three equations, the power-law, the Carreau and the Allen-Uhlherr have been used to describe the viscosity-shear rate data. Canada. (AW)