FSA-380 is a hydrophilic fumed silica rheology control additive with a very high specific surface area of approximately 380 m²/g. It provides extremely strong rheological efficiency, delivering excellent anti-settling and anti-sagging performance. After proper dispersion, it offers high transparency and enhanced corrosion resistance, making it well suited for demanding high-performance coating formulations.
| Properties | Unit | FSA-380 |
| SiO2 content (dry basis) | wt.% | ≥ 99.8 |
| Loss on drying | wt.% | ＜ 2.0 |
| pH (4% suspension) | - | 3.7-4.5 |
| Specific surface area (BET) | m²/g | 350-410 |
| Tamped density | g/l | Approx. 50 |
| Surface treatment | - | Hydrophilic (untreated) |
FSA-380 is particularly well suited for:
General industrial coatings requiring high rheological efficiency
Wood coatings demanding sag resistance and clarity
Plastic coatings with high-performance stability requirements
Powder coatings benefiting from improved flow and storage stability
Waterborne / solventborne / radiation-curing coatings needing very strong rheology control
1-pack and 2-pack coatings requiring very strong structure build
Adhesives and sealants requiring maximum non-sag / shape retention
Silicone rubber (HTV) requiring very high reinforcement/rheology efficiency
Printing inks needing strong thickening and stability
Cable compounds requiring very strong structure build
Unsaturated polyester resins requiring maximum thixotropy
Plant care / plant protection formulations needing strong rheology control
Powder flow / anti-caking to improve free-flow and reduce caking of powders
