Three‑Roller Coating Machine for White Carbon Black Modification
As a procurement manager or process engineer, you know that white carbon black (precipitated or fumed silica) is a high‑value functional filler. Its immense surface area and reinforcing ability can transform ordinary polymers into advanced materials. Yet the same properties that make silica valuable also create two stubborn challenges: agglomeration and poor compatibility with organic matrices. Unmodified silica particles are hydrophilic and tend to form hard hydrogen‑bonded agglomerates. In a silicone rubber compound, these agglomerates become “fish eyes” that weaken the product. In a coating formulation, they cause settling and poor rheology. The solution is surface modification – coating each silica particle with a coupling agent or stearic acid to […]