Adhesives and Sealants Formulations with Fillers / Extenders

Fillers / Extenders appear as fine powders or particulates ranging from white to colored depending on composition. Key features include reduced shrinkage, rheology control, enhanced compression strength, and improved dimensional stability. Fillers are common in construction adhesives, automotive bonding systems, and gap-filling applications where they prevent excessive shrinkage and enhance overall bond performance. 

Sub-types include mineral fillers like calcium carbonate, talc, glass microspheres, functional fillers like aluminum oxide or silica, nano-scale fillers, and surface-treated grades. Recent developments focus on sustainable bio-based fillers derived from agricultural waste streams and increasing utilization of lightweight and functional fillers.