Siliceous fiber mats and method of making same

摘要

Water-repellent porous glass-fibre mats suitable for insulation purposes are made by forming a mat of randomly arranged glass fibres in a cured thermosetting resinous binder, said resin being modified by a silicone resin, and coating the mat with an aerosol of a silicone resin and an amino-functional silane or metal octoate, the aerosol particles having an average particle size between 0.5 and 10 m . The thermosetting resin may be a phenol-formaldehyde resin.