What is the difference between nano silica and white carbon black

1. Different in nature:

The appearance of nano-silica is an amorphous white powder, non-toxic, odorless, and pollution-free. The microstructure is spherical, showing a flocculent and net-like quasi-particle structure, and is insoluble in water.
White carbon black appearance: white powder or granular or irregular agglomerates, soluble in caustic alkali and hydrofluoric acid, insoluble in water, solvents and acids (except hydrofluoric acid). High temperature resistance, non-combustible, tasteless, odorless, and has good electrical insulation.

2. Different uses:
Nano silicon dioxide is used in electronic packaging materials, resin composite materials, plastics, coatings, rubber, etc. The use of nano silicon dioxide for light transmission and small particle size can make the plastic more dense. Adding dioxide to the polystyrene plastic film After silicon, it can improve its transparency, strength, toughness, waterproof performance and anti-aging performance.

White carbon black is used in colored rubber products to replace carbon black for reinforcement to meet the needs of white or translucent products. White carbon black also has super adhesion, tear resistance, heat resistance and aging resistance, so it can also replace part of carbon black in black rubber products to obtain high-quality rubber products, such as off-road tires, engineering tires, Radial tires and so on.

Nano-silica means that the size of the silica particles has reached the nanometer level. It is named from the morphological structure of the particles. The preparation method can be any one. Even if it does not reach the nanometer level at the beginning, it can be crushed. And reach this level.

The name of nano-silica mainly appears in scientific research fields such as medicine and biomedicine. It is often used as a carrier or as a modified particle, that is, it is often surface-modified. If it is a spherical nano-silica with basically no structure, it is added to the coating system to play a filling role, and the thixotropy effect is not good, that is, the improvement of rheological properties is not large.