What are High Thixotropic Thickeners?
High thixotropic thickeners are a type of thickener that reduces viscosity under shear stress and quickly recovers to its original viscosity once the shear force is removed. This characteristic is known as thixotropy. These thickeners are widely used in applications requiring low viscosity during operation and high viscosity when at rest, such as in coatings, adhesives, and inks.
Mechanism of Action
Under mechanical force (like stirring, brushing, or spraying), the molecular structure of high thixotropic thickeners temporarily breaks down, reducing the system's viscosity. Once the mechanical force ceases, these molecular structures rapidly reform, restoring the viscosity to its original high level.
Characteristics and Advantages
- Ease of Application: Lowers viscosity during brushing or spraying, facilitating easy application.
- Strong Self-recovery: Quickly restores high viscosity in a resting state, preventing sagging or dripping.
- Enhanced Storage Stability: Reduces settling and separation issues, extending product shelf life.
- Wide Application Range: Suitable for industries like coatings, inks, adhesives, and cosmetics.
Application Scenarios
- Coatings: Used in interior and exterior wall paints and industrial coatings to improve anti-sagging properties and brushability.
- Inks: Enhances the rheological properties of printing inks, ensuring smooth and precise printing.
- Adhesives: Easy to apply during construction and provides high bonding strength when at rest.
- Cosmetics: Used in creams and gels to provide ideal spreading and texture.
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