Visco-plasticity characterized by yield stress is an important rheological property of composite propellant suspensions. The yield stress along with viscosity affects various unit operations in propellant processing as well as the quality of final product. The characterization of yield stress of propellant suspensions using direct measurement techniques. such as forced falling ball an... https://parisnaturalfoodes.shop/product-category/dong-quai-root-c-s/