Inorganic-organic hybrid coatings for metal and glass surfaces

Abstract

Inorganic-organic composite materials have been tailored by sol-gel synthesis with different properties for different applications. A composite from SiO2, dipenyl silanes and methylvinyl silanes was modified by an amino silane and crosslinked by diepoxides, leading to a sealing strength of more than 10 N/cm when used as a hot melt for sealing copper to polyimide. An ormocer type of coating was modified by nanoscaled gamma-Al2O3 or boehmite, leading to a low-curing transparent coating material with very high scratch resistances and a ZrO2 nanocomposite modified with silanes with perfluorinated groupings having high transparency combined with low surface free energy with 18mJ/m² was synthesized.