Coating thixotropy

Thixotropy is the property that the fluid viscosity will decrease when it is sheared by external force, and it can quickly return to the original viscosity after the shearing action disappears. Many coatings are thixotropic and thixotropic . Coating is more conducive to construction. Studies have shown that the thixotropy of a fluid is often related to its molecular structure and intermolecular interaction. In a static state, it is in a state of high viscosity due to the strong intermolecular interaction between molecules. Under the action of mechanical force, the intermolecular interaction force is broken or weakened, which is manifested as a decrease in viscosity. After the agitation is stopped, the intermolecular interaction force is restored, which is also manifested as high viscosity. Coatings with good thixotropy are more suitable for spraying construction. On the one hand, it is not easy to sink and delaminate during storage. On the other hand, once the viscosity is reduced during the spraying process, it is easy to flow and atomize, and the viscosity rises quickly after reaching the surface of the object. Reduce the occurrence of disadvantages such as sagging.