XYSIL® fumed silica is mainly used as additives for anti-sag, rheology control and anti-settling

It is also used as rheology control and reinforcing agents in sealants, and improves the storage stability and processability of adhesives and sealants.
XYSIL® fumed silica is widely used in all kinds of adhesive and sealants industries, e.g. silicone sealants, PVC-plastisol sealant, polyacrylate sealant, expoxy adhesive, polyurethane adhesive, unsaturated polyester, polyurethane water-based adhesive, etc.

Fumed silica in Adhesives and Sealants

Sytem XYSIL® Grade Concentration in wt.% Effect
RTV-1 Silicone Sealant XYSIL®150 7-10 Reinforcement, Thixotropy, Anti-Sag
Polyacrylate Sealant XYSIL®200 0.8-3 Reinforcement, Thixotropy, Anti-Sag, Anti-Settling
Polysulfide Sealant XYSIL®200 1-4 Reinforcement, Thixotropy, Anti-Sag
Butyl Sealant XYSIL®200 1-3 Reinforcement, Thixotropy, Anti-Sag
Pvc-Plastisol Sealant XYSIL®200
XYSIL®300
0.8-1.2
0.8-1.2
Thixotropy, Anti-Sag
Epoxy Adhesive XYSIL®200
XYSIL®380
1-10
1-10
Thixotropy,  Anti-Sag, Anti-Settling
Polyurethane Adhesive XYSIL®200 1-6 Thixotropy, Anti-Sag. Anti-Settling
Acrylate/Methylacrylate XYSIL®200
XYSIL®300
0.5-4
0.4-4
Thixotropy, Anti-Sag. Anti-Settling
Unsaturated Polyester XYSIL®200
XYSIL®300
1.5-7
1.5-7
Thixotropy, Anti-Sag.Anti-Settling
Silicone Adhesive XYSIL®200 1-6 Reinforcement, Thixotropy, Anti-Sag. Anti-Settling
Polychloroprene Adhesive XYSIL®200 3-6 Thixotropy, Anti-Sag, Preventing of strings
Polyvinylchloride Adhesive XYSIL®200 0.8-4 Thixotropy, Anti-Sag, Preventing of strings
Pressure Sensitive water based XYSIL®200 0.8-3 Reinforcement, Anti-Sag
Hotmelts(Polyester, Polyamide, Polyurethane) XYSIL®200 0.5-5 Anti-Sag, Thixortopy, Stabilizing, Reinforcement
Neoprene,water based XYSIL®200 6-18 Anti-Sag, Thixortopy, Stabilizing, Reinforcement
Acrylate, water based XYSIL®200 2-5 Anti-Sag, Thixortopy, Reinforcement