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METHOD FOR MANUFACTURING FUNCTIONALLY GRADED COMPOSITE MATERIAL FOR PCB HAVING HIGH HEAT DISSIPATING PROPERTIES AND ELECTRIC INSULATING PROPERTIES, AND FUNCTIONALLY GRADED COMPOSITE MATERIAL MANUFACTURED THEREBY
METHOD FOR MANUFACTURING FUNCTIONALLY GRADED COMPOSITE MATERIAL FOR PCB HAVING HIGH HEAT DISSIPATING PROPERTIES AND ELECTRIC INSULATING PROPERTIES, AND FUNCTIONALLY GRADED COMPOSITE MATERIAL MANUFACTURED THEREBY
The present invention relates to a method for manufacturing a functionally graded composite material for a PCB, comprising the steps of: (a) manufacturing at least two types of mixed powders comprising (i) a metal powder including a powder consisting of aluminum or an aluminum alloy, and a magnesium powder, and (ii) a polymer or a ceramic powder, wherein the mixed powders are different in the content of the polymer or ceramic powder; (b) laminating the at least two types of mixed powders manufactured in step (a), so as to form a functionally graded laminate in which a fraction of the content of the polymer or ceramic powder with respect to the metal powder in each layer varies from the lowest layer portion to the uppermost layer portion; and (c) manufacturing a functionally graded composite material by atmospheric sintering or spark plasma sintering the functionally graded laminate.
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