Composite Plating of Zinc and Silica Particles Treated with Silane Coupling Agent

The purpose of this work is to confirm the proposition that the interaction between suspended particles and metal ions plays an important role in the composite coating of zinc and silica particles. To introduce functional groups onto the surface of silica particles, particles were pretreated with an amino silane coupling agent. The introduced amino groups are coordinated with zinc ions. Using potentiometric titration, the coordination reaction between zinc ions and amino groups on the particle surface was investigated. The relationship between zinc-silica codeposition behavior and the zinc-amino group interaction also investigated.