Fabricating Method of Ferroelectric Thick Film Using Polymer Composites

摘要

PURPOSE: A method for manufacturing a dielectric thick film by using a polymeric material is provided to reduce the manufacturing cost of a stacked ceramic condenser by producing a thick film of dielectric ceramic powders and polymeric materials without employing the sintering process. CONSTITUTION: A polymeric material is melted. A dielectric ceramic powder is added to the melted polymeric material and agitated to be mixed, uniformly. The mixture is formed on a substrate as a thick film by using the spin coating process. The substrate is a copper substrate. The polymeric material is made of a polypropylene having a melting point of about 157C, the density of about 0.90g/cm¬3, and a molecular weight of about 12,000. A melting temperature of the polypropylene is 180-220C. The dielectric ceramic powder is ultrafine BaTiO3 powder. An additive amount of the dielectric ceramic powder is 10-90 wt.%.