What is Rheology and thixotropy?

Rheology is the science that studies the behavior of deformable materials under the influence of applied forces. It focuses on the analysis of the flow and deformation properties of substances such as paints, coatings, building materials, chemicals, drilling fluids, etc.

Thixotropy is a rheological property of certain materials that exhibit changes in their viscosity or fluidity in response to the application of stresses. It is characterized by a decrease in viscosity when subjected to agitation or shearing and a gradual increase in viscosity when left at rest. It is a desirable property in many products and applications, as it allows for easy application and extension of the material when agitated or force is applied, but ensures greater stability and resistance to flow once at rest.

reologia

What is sepiolite and what are the general properties of rheology additives based on it?

Sepiolite is a naturally occurring fibrous mineral belonging to the group of clays – phyllosilicates. It is characterized by its structure in the form of needles or fibers, which give it unique properties. Sepiolite is extracted from natural deposits and is used in various industrial applications due to its exceptional rheological and physical properties.

Sepiolite rheological additives, thanks to their exceptional pseudoplasticity, thixotropy and ability to increase viscosity, improve the workability, stability and efficacy of formulations in a wide range of industrial applications.

What is attapulgite and what are the general properties of rheological additives based on it?

Attapulgite is another naturally occurring clay mineral that is widely used in industry as a rheological additive. It is characterized by its needle-like structure, which gives it unique properties in terms of rheology and water absorption. Attapulgite-based rheology additives are used to improve flow and viscosity properties in a variety of industrial applications:

Attapulgite has a high water absorption capacity, which contributes to its thixotropic property. This means that the viscosity decreases under shear stress, such as agitation, and increases again when the stress ceases, improving applicability.

Applications