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A new study examines the synthesis of conductive PANi/SiO 2nm composites and their effects on the electrical and mechanical properties of electrostitive epoxy coatings.
PANi / SiO's role in 2 nanometer composites against the electrical and mechanical properties of electrostational epoxy coatings
polyphenyls (PANi) have been heavily incorporated into epoxy coatings as conductive materials. However, epoxy coatings containing PANi have poor mechanical performance
. In this new study, polyphenylamine/silicon dioxide (PANi/SiO 2) nanocomposomes with different silica contents were prepared through in-place chemical oxidation polymerization.
uses Fourier Transform Infrared Spectroscopy (FTIR), Field Emission Scanning Electron Microscope (FESEM) and Zeta position measurements to examine the structure and morphology of synthetic PANi/SiO 2nm composites. The thermal and electrical properties of nanocomposic materials are studied by thermal heavy analysis (TGA) and standard four-probe electrode methods.
results show that PANi in PANi / SiO 2 nanometric composites is covered with silicon dioxide (SiO 2) nanoparticles, and the conductivity of nanocomposites decreases as siO 2 content increases.
higher surface and volume resistance
THE PANi/SiO 2 nanocomposome with 4.1wt% SIO 2 has a conductivity of 7.6×10 -2 S/cm, while the PANi has a conductivity of 8.7×10-2 S/cm. As a result, epoxy resin coatings containing 30 wt%PANi / SiO2nm composites have higher surface and volume resistance than epoxy coatings containing pure PANi.
contrast, the increase in SiO 2 content in PANi /SiO 2nm composites enhances the mechanical properties of the epoxy coating compared to epoxy coatings that contain pure PANi. Nanocomposive materials containing polyphenylamine/silicon dioxide coating2 and 17.2% weight silica show good mechanical properties (20 L/mil wear resistance, 100 kg shock strength) and permissible Surface and volume resistivity (1.3×10 11 Ω/cm2 and 6.6×10 10 Ω cm, respectively) are used in anti-static coatings.
the study has been published in the Journal of Coating Technology and Research Volume 17 (2020).
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