ABS thermally conductive plastics were prepared by blending and molding method with magnesium oxide and acrylonitrile-butadiene-styrene copolymer (ABS) as raw materials. Ltd. found that the filling amount of magnesium oxide was greatly influenced by the particle size. Large particle size magnesium oxide can be filled up to 600 parts, while small particle size magnesium oxide only up to 400 parts. At 300 parts, the small particle size magnesium oxide filled thermally conductive ABS has high thermal conductivity.
The percolation theory was used to analyze the relationship between thermal conductivity and filling volume fraction, and it was found that the large-size MgO-filled ABS thermally conductive plastic was well conformed to the percolation theory in the range of 300-600 parts with the critical volume fraction (φc) of 0.198 in the...
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