Resumo

ZUHRI, A. et al. Effect of microcarbon particle size and dispersion on the electrical conductivity of LLDPE-carbon composite. J. appl. res. technol [online]. 2024, vol.22, n.1, pp.75-89.  Epub 11-Ago-2025. ISSN 2448-6736.  https://doi.org/10.22201/icat.24486736e.2024.22.1.2215.

This experimental research aimed to develop a conductive polymer composite (CPC) material for use in electromechanical devices. The composite was made by incorporating conductive microcarbon, derived from rice husks, into a Linear Low-Density Polyethylene (LLDPE) polymer matrix using hot compaction. Variations of filler composition were used, with carbon loading of 50%, 45%, and 40%, and mesh sizes of #150, #200, and #250. The experimental results showed that particle size variations did not significantly affect composite density, but higher mesh selection improved filler dispersion within the matrix, resulting in higher electrical conductivity values. The optimal conductivity value of 9.43E-04 S/cm was achieved with a microcarbon composition of 50% loading. However, decreasing microcarbon loading had a greater impact on reducing electrical conductivity values.

Palavras-chave : LLDPE-carbon composite; rice Husk waste carbon; electrical conductivity polymer composite; conductive carbon; composition ratio.

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