Calcium Carbonate Filler for Adhesives (Coated GCC/PCC)
Coated Calcium Carbonate (GCC/PCC) is the most widely used extender filler in adhesive and sealant formulations, providing volume extension, viscosity adjustment, and improved dimensional stability at low cost. Surface coating with stearic acid or other fatty acids improves compatibility with polymer matrices and reduces moisture uptake. In silicone, polyurethane, and MS polymer sealants, fine-particle coated CaCO3 contributes to smooth extrusion, good surface finish, and balanced mechanical properties.
Технические характеристики
| moisture | ≤0.3% |
| appearance | White fine powder |
| brightness | ≥95% |
| coatingAgent | Stearic acid (1–2%) |
| averageParticleSize | 1–5 µm (grade dependent) |
Области применения
- Volume extender in silicone and PU sealants
- Filler in MS polymer elastic adhesives
- Viscosity modifier in construction adhesives
- Filler in acrylic and latex caulks
- Extender in hot-melt adhesive formulations
Особенности продукта
- Cost-effective volume extender
- Surface coating improves polymer compatibility
- Smooth extrusion and good surface aesthetics
- Reduces cost while maintaining performance