👉 The Raymond fluid is a colloidal suspension of solid particles in a liquid, characterized by its unique rheological properties. It consists of micron-sized particles suspended in a continuous liquid medium, typically water, stabilized by an electric double layer or steric stabilization. This suspension exhibits non-Newtonian behavior, meaning its viscosity changes under different shear rates; it becomes less viscous when subjected to higher shear (shear-thinning) and can even flow like a liquid under low shear. This behavior is attributed to the interactions between particles and the electric double layer surrounding them, which can be disrupted by shear forces. Raymond fluid is widely used in industrial applications such as inkjet printing, 3D printing, and biomedical engineering due to its ability to produce stable, printable inks and gels with tunable flow properties.
