Stronger Bonding and Hardness
Larger particle size yields higher green strengths (i.e., modulus
of rupture) and harder refractory fiber shapes.
Better High Temperature Properties
Larger particle size and lower sodium content gives lower shrinkage
at temperatures up to 2300oF.
Saves Money
Balanced silica to starch floccing ratio is more economical giving
high strength with less colloidal silica in formulation.
Rigidizes Better
Larger particles soak in further and giver stronger, harder rigidized
products; lower sodium results in less shrinkage at end-use temperatures.
Flocs with Cationic Starch
Negative surface charge flocs cationic starch refractory fibers
together to form a three dimensional floc for good product strength.
