Method for introducing filler materials in liquid form into porous bodies

摘要

The method for introducing fillers into disc-shaped or ring-shaped porous bodies for brake bodies, comprises contacting the fillers in liquid form with the porous bodies, dispersing the fillers in the interior of the porous body and then reacting with a component of the porous body under formation of a chemical compound. The fillers are transported via cylindrical wicks into the interior and the wick diffuses from the end, which is situated in the porous body, into the porous body. The porous body contains carbon in the form of fibers, fiber bundles or textiles and a porous matrix. The method for introducing fillers into disc-shaped or ring-shaped porous bodies for brake bodies, comprises contacting the fillers in liquid form with the porous bodies, dispersing in the interior of the porous body and then reacting with a component of the porous body under formation of a chemical compound. The fillers are transported via cylindrical wicks into the interior and the wick diffuses from the end, which is situated in the porous body, into the porous body. The porous body contains carbon in the form of fibers, fiber bundles or textiles and a porous matrix. The liquid filler containing silicon partly reacts with the carbon of the porous body to form carbides. Blind holes (3) are bored into the porous bodies with gradated diameter and are centrosymmetrically arranged with respect to a position around the axis of rotation. The wicks made of porous carbon are pushed into the blind holes. The blind holes end at 1.8-3 mm, from which the drilling facing surface of the annular disc removes; in the area of a second drilling, the blind holes have a smaller diameter of 2-4.5 mm; in the area of the perforated surface of the annular disc, the diameter of a first drilling is double of the diameter in the closer part; and the depth of the area of the first drilling of the blind hole has a larger diameter of 3 mm and = 10 mm or 25% of the thickness of the construction unit at the part. The wicks from carbonized wood or porous carbon strengthened with fibers are used and contain parallelly placed roving bundles in cylindrical form, which are bound by bonding agents, which are carbonized by heating under the exclusion of oxygen at 750-1300[deg] C.