Special nano-silica dispersion for antifouling and heat-resistant coatings

.Nano silica is widely used in electronics, medicine, biology, rubber, plastics, paints, coatings, ceramics and other industries. Our company has been producing silica powder with a particle size of -nm since

. This process technology has been identified as the first in China and has reached the international advanced level. It has applied for a national invention patent. With the widespread application of nanomaterials, the problems of easy agglomeration and difficulty in dispersion of nanopowder materials have become increasingly prominent, and nanosilica is no exception. This not only requires special dispersion equipment and is complicated to operate, but also results in only a dispersion of silica agglomerates, far from a dispersion of single nanoparticles

. This is due to the dispersion of nanosilica particles. Extremely micro, with high surface atomic ratio and large specific surface area. The particles are easily attracted to each other through van der Waals force, hydrogen bonding and covalent bonding, forming secondary particle size and tertiary particle size, that is, agglomerates. These aggregate particles The resultant force between them (the sum of van der Waals forces, hydrogen bonds, and covalent bonds) is often above 3/. The shear force of general mixing equipment can only reach -/, so it cannot truly deaggregate and fully disperse. Even if some agglomerates are temporarily deaggregated under the action of external force, they will reunite again after the external force is removed.
.
.
Different particle sizes, such as particle size 3, other solvents, and various concentrations can be customized.