In order to suppress the agglomeration phenomenon in the tungsten oxide dispersion, the following methods can be adopted:
Use the appropriate tungsten oxide dispersion dispersant
Choosing a suitable dispersant can increase the mutual repulsion between tungsten oxide particles and hinder the aggregation of particles. The dispersant usually has a hydrophilic group or a hydrophobic group, which can form an adsorption layer on the surface of the particles and keep a large distance between the particles.
Adjust the pH value of tungsten oxide dispersion
Changes in pH affect the ionic properties of the solution and the surface charge density, thereby affecting the particle interaction forces. By adjusting the pH value of the solution, the charge state on the surface of the particles can be changed, reducing the attractive force between the particles, thereby inhibiting the agglomeration.
Controlling the Solvent Concentration of Tungsten Oxide Dispersion
The concentration change of the solvent in the solution will affect the dispersibility of the particles. Typically, increasing the solvent concentration reduces the tendency of particles to agglomerate. Therefore, the concentration of the solvent can be properly adjusted to keep it in an appropriate range, which is beneficial to the dispersion stability of the particles.
Ultrasonic treatment of tungsten oxide dispersions
Ultrasonic treatment can destroy the aggregation structure of particles and redisperse them through the action of sound wave vibration. Ultrasonic treatment can improve the uniformity and stability of the dispersion and inhibit the formation of agglomerates.
Add tungsten oxide dispersion stabilizer
Adding some stabilizers in the tungsten oxide dispersion, such as surfactants, colloidal stabilizers, etc., can increase the repulsion between particles and prevent the aggregation and precipitation of particles.
The comprehensive use of the above methods can effectively inhibit the agglomeration of the tungsten oxide dispersion and maintain its good dispersion and stability. The specific selection of the appropriate method needs to be adjusted and optimized according to the specific experimental conditions and application requirements.
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