The present invention relates to an insulating material as a base, two-phase composite formed by a conductive material in the second phase material within the structure of the prediction method ipcha percolation and accordingly provides a two-phase composite material having a second phase of forming the percolation structure, the optimal amount. Prediction method of the two-phase composite material within the particle percolation structure in accordance with the present invention, by specifying the region to be the horizontal size (X) and vertical size (Y) different from the second appointed by the size of the hexagonal lattice place, be placed in the given area second on the minor axis (d) and for setting the aspect ratio of the second major axis on the (a) and specifies the number on the first 2 (n), and be disposed in the inclination ( ) and a designated area for the second image on the second location coordinates (x, y) repeatedly is disposed a second phase in the specified area by specifying the. And calculate the amount of the arrangement when the second phase up to a saturated state in the given area to the amount placed. Two-phase composites according to the present invention and the insulating material to the base, consists of a conductive material and a second phase, wherein, if the percolation structure of the second phase is to be formed to be made to overlap the second inter-phase, the second phase When the aspect ratio of the particles that make up 59% is 1, 5, when 43%, 20 19%, and when any one of the 100 when 4% is formed by the minimum amount arrangement. Also when the overlap is formed so as to be made the second phase-to-phase, when the second aspect ratio of the particles that make up the phase is 1 to 45.2%, 5 days when 40%, 20 when 26.5% 100 9.8% when any one of the is formed by placing the maximum amount.
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