ANSCHWELLENDES BAHNMATERIAL

摘要

The invention provides an intumescent sheet material comprising 20 to 80 dry weight percent of at least one unexpanded intumescent material, 10 to 40 dry weight percent of at least one processed vermiculite selected from ground expanded vermiculite and delaminated vermiculite, greater than 0 to 5 dry weight percent of inorganic fibers having diameters greater than 5 microns, and greater than 0 to 10 dry weight percent of organic fibers; wherein said sheet material comprises substantially no ceramic fibers of less than 5 microns.