What is thixotropy?
Under a constant shear rate or shear force, the flow behavior that gradually loses is called thixotropy. Thixotropy is a reversible process. When the shear force is removed, stirring is stopped and left to stand, it will slowly return to the original structural viscosity over time. This phenomenon always occurs at a certain speed, and its speed depends on the strength of the secondary valence bond in the system and the difficulty of reorientation of the molecule itself .
Latex paints have different degrees of thixotropy, which are often obtained by adding a thixotropic additive . The development of this thixotropy can be explained by that develop when the paint is left to stand and break apart under stress. The thixotropy of latex paint is of great practical significance. During construction, the paint is subjected , and the viscosity becomes low, which is beneficial to the flow and leveling of the paint, and the application of Xu becomes easy; after the application is completed, that is, at a low shear rate, the viscosity If it becomes higher, the sagging of the paint on the vertical surface ; during the storage of the paint, the viscosity is high and the sedimentation of the pigment (filler) is resisted, thereby improving the storage stability of the paint.