Enhancement of the Mechanical Properties of a Zeolite Based Composite Coating on an Aluminum Substrate by Silane Matrix Modification

Adhesion and impact properties of a silane-zeolite composite coating on aluminium substrates,have been investigated. The composite film was prepared with different silane matrixformulations (changing bi-functional and tri-functional silane ratios). The results showed highhydrophobicity of the modified silane-zeolite coating and good adhesion performances for thesample with lower bi-functional silane amount. Furthermore the composite coating with mixedformulation of silane matrix evidenced good impact properties, with better results for the sampledespite the unmodified silane coating with higher amount of bi-functional silane.