Differences between Carbon Black and Precipitated Silica

Main   Composition

Charcoal  

Silicon   Dioxide

Formation   Mechanism

Thermal   decomposition and agglomeration in a very short time

Slowly   formed during settlement and subsequent ripening.

Physical   Surface

Graphite,   semicolor state

Amorphous   structure

Surface   groups

A   small number of different groups

Massive   homogeneous distribution (-OH)

Surface   affinity

Hydrophobicity

Hydrophilicity

The   effect of S vulcanization

Negligible

It   has a considerable impact on cross-linking.

Conductance   characteristics

Medium   conduction

insulator