Cellulosic fibrous mats were impregnated with various water-repellent formulations based on reclaimed polystyrene (5, 10, 15, and 20%), alkyd resin (5%), gum rosin paraffin wax (0.5%). The tested for their bursting strength resistance to bending. They also subjected the ring crush test short-span compression test. By increasing concentration of total solid ingredients 20, 25.5%), retention gram...
