Adhesive and sealant formulators face a significant challenge: maintain the material's rheological performance between the time it is manufactured and the time it is applied.

Cabot's fumed silica controls the rheology of adhesives and sealants such as epoxy, acrylics, urethanes and silicone systems – giving formulators the ability to tailor the viscosity of a system to their own requirements.

Ideal for structural adhesives and sealants for electronics, automotive, and construction applications, Cabot fumed silicas provide the following benefits:

• Increased viscosity
• Anti-settling or suspension of fillers and pigments
• Sag resistance during application and curing
• Shear thins at high shear for easy application/gunning
• Reinforcing agent for sealants

Cabot's untreated fumed silicas provide effective rheology control in non-polar systems. In medium to high polarity systems, treated fumed silicas out perform untreated fumed silica in providing stable rheology control.