Negative effects of silanol groups ≡Si-OH on the surface of silica
Hits: 106
img
1. Silica absorbs moisture in the air during storage, and stabilizes its own structure, that is, moisture absorption
2. When the silica compound is mixed, it is easy to form hydrogen bonds and self-agglomerate, resulting in high Mooney viscosity and difficult mixing and processing.
3. The hydrophilic and hydrophobic rubber macromolecules of silica repel each other, which affects the dispersion of silica in rubber
4. Active hydrogen ions can easily adsorb amine materials such as zinc oxide and accelerators, resulting in delayed vulcanization and reduced performance of the rubber compound.
