Rheology Control with HDK®

Discover the science behind HDK Pyrogenic Silica, a product WACKER has developed for over 40 years! This animated schematic illustration shows you the unique properties of HDK Pyrogenic Silica that enable rheology control. In liquid solutions the agglomerates that make up HDK form a three-dimensional network, which provides a gel-like consistency. Under shear force this network collapses allowing the agglomerates to move freely and cause viscosity reduction. After application the solution recovers its viscosity and reforms into a reverse network. This ability to alter the solution's viscosity is crucial to rheology control and affords HDK the versatility to be used in a whole host of different products and applications. Find out for yourself and watch the clip now!