PROCESS FOR MANUFACTURING A MOLDED BODY WITH A SUPERHYDROPHOBIC SURFACE AND MOLDED BODIES WHICH CAN BE OBTAINED BY THIS PROCESS AND ITS APPLICATION

摘要

The invention relates to a method for producing a shaped body and a shaped body which can be obtained by said method and which has at least in part a superhydrophobic surface which exhibits craters, on the upper edges of which fine polymer hairs are formed. In order to carry out the method, first of all a composite (21) is produced from a first plate (11) having a polymer film (20') pressed into a surface of the first plate (11) and a third plate (13) which has rough areas at least on one of the surfaces thereof. Then the third plate (13) is placed opposite the pressed-in polymer film (20') without the third plate (13) touching the composite (21). Then the third plate (13) is heated to a temperature above the glass transition temperature of the polymer contained in the polymer film (20'), without the composite (21) being heated, and the heated third plate (13) is brought into contact with the surface of the polymer film (20') facing away from the first plate. In this way polymer from the polymer film (20') penetrates partially into the rough areas of the third plate (13). Finally the structuring of the surface of the pressed-in polymer film (20') facing the third panel (13) takes place by a relative movement which distances the third plate (13) from the first plate (11) so long as the pressed-in polymer film (20') remains softened and can be prolonged in this way. As a result a modified composite (21') is formed which comprises the required shaped body.