Experimental evaluation of dc Conductivity of Rice Husk Reinforced Polypropylene Composites with addition of cenosphere

Janu Sharma

Abstract


Insulating materials are used in electrical power circuits to prevent leakages of current. Main objective of this study is to evaluate the dc conductivity of rice husk filled polypropylene composites with and without cenosphere. The conductivity at room temperature was found to decreases from 2.64e-13 to 9.371e-14 S cm-1 with the addition of cenosphere. Dense packing of the material, collapse of pores and decreases in air gap between the rice husk and cenosphere particles could be the factors for the increase in conductivity. In case of dc conductivity of filled polymers interface interaction is the most important parameter which influences the dc conductivity of matrix and will depend on type of fillers, concentration of filler and the chemical bonding between filler and matrix. Rice Husk reinforced polypropylene composites having 20% rice husk with and without cenosphere is developed. Treated and untreated cenosphere with different concentration were loaded with chopped rice husk in polypropylene. The dc conductivity of rice husk-filled Polypropylene was studied by adding cenosphere (2, 4, 6, 8 phr) respectively in concentrations. The loading of the polypropylene with the rice husk and cenosphere decreases the dc conductivity (σdc).

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References


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DOI: https://doi.org/10.37628/jcmm.v1i1.73

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