High density, moisture resistant mica cylinders

摘要

High density, moisture resistant, high temperature stable mica tubular structures and methods of making the same are described. The structures comprise one or more mica paper layers impregnated with a polysiloxane binder, said binder containing an organic titanate and a metal naphthenate. Also disclosed are methods for making such tubular mica composite structures by impregnating mica papers with such composition, rolling the impregnated papers into cylindrical form and curing the cylinder.