How do you disperse fumed silica?

How do you disperse fumed silica?

Sonic Mixing Systems for Dispersing Fumed Silica Our systems use a PD pump to force the silica premix through a specially engineered Orifice, generating pressure and cavitation. The mix then exits the Orifice at extremely high velocity, striking a blade in its path that helps generate excessive cavitation.

What is wetting and dispersing agent?

Wetting agents are surface-active substances and improve the wetting of solids. Dispersing agents prevent particles flocculating by various mechanisms (electrostatic effects, steric effects). Wetting and dispersing additives unite both mechanisms of action in one product, i.e. they are both wetting and stabilizing.

What is dispersant in paint production?

Dispersants are extremely important during the wetting process. They allow the reduction of the surface tension of water, thus facilitating its penetration into the spaces between the pigment particles. An example of such a dispersant is Tensol DDM, which is used in the production of waterborne paints.

What is pigment agglomeration?

Pigments contain agglomerates. This means that particles in a pigment naturally group together, which when mixed can result in clumping and uneven shades. The first step in the pigment dispersion process is providing the platform for these agglomerates to be broken down.

What are pigment dispersions used for?

Manufacturers use pigment dispersions to color many types of materials, such as paint and coatings or plastics. Applications include decorative and industrial applications, thermoset composites, inks, plastics and textiles.

What can be used as a wetting agent?

Soap also is a surfactant — a wetting agent that helps water spread out evenly over the leaf surface. As a result, a small amount of soap mixed into herbicide or fungicide sprays increases their effectiveness.

What is anti settling agent?

An anti-settling agent is a chemical compound used to delay the drying and solidification of a paint pigment during storage or after application on a metallic surface.

How bad is fumed silica?

The general answer is “no”, fumed silica is not a dangerous material. Fumed silica is an non-toxic non-harmful material. In fact fumed silica has been applied in cosmetic, food and drugs for years. Due to its strong hygroscopicity(absorbing moisture), it may caused dry skin when directly contacted with skin.