Combining the experimental data with the literature [ 23 ], several conclusions can be drawn: (1) Under different diameters or different morphologies of the filler, the thermal conductivity of the polymer materials exhibits an increasing trend, indicating that the thermal conductivity of nylon composites increases with the increase in the content of Al 2 O 3 filler.
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Research on Characterization of Nylon Composites Functional Material Filled with Al<sub>2</sub>O<sub>3</sub> Particle.
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However, when the alumina content exceeds this threshold, the excessive filler content leads to particle aggregation in the polymer matrix, which affects the overall performance of the composite material, resulting in a decreasing trend in compressive strength. 4.