Enhanced mechanical and electrical properties of ECR-glass reinforced polyimide composites with incorporation of TiO2 for insulation applications.
Ogbonna, Victor E Popoola, Abimbola Patricia I Popoola, Olawale M Adeosun, Samson O
Ogbonna, Victor E
Popoola, Abimbola Patricia I
Popoola, Olawale M
Adeosun, Samson O
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Abstract
This paper presents the mechanical behaviour of novel class composites consisting of ECR-glass type reinforced polyimide (PI) composite loaded with TiO2 nanoparticles. ECR glass reinforced PI composites were fabricated by adding TiO2 particles at three different concentrations namely, 2, 4, and 6 wt% using 3D-Turbula dispersion and Spark Plasma
Sintering (SPS) method. The morphologies, crystallinity, mechanical, and electrical properties of the produced composites were evaluated using scanning electron microscope
(SEM), X-ray diffractometer, nanoindentation test, and LCR meter device. The SEM results revealed that the TiO2 nanoparticles were homogenously dispersed into the
PI composites. The mechanical properties, such as hardness, stiffness, and elastic modulus of the pure PI and ECR glass reinforced PI composite was improved by the incorporation
of TiO2 nanoparticles. Maximum hardness and elastic modulus values of 2.19 GPa and 13.99 GP, respectively, was observed in ECR reinforced PI composited loaded with 6 wt%
TiO2 nanoparticles. In addition, ECR glass reinforced PI composites with 6 wt% TiO2 nanoparticles depicted the lowest dielectric constant (1.18), dielectric loss ( 1.14) andelectrical conductivity (3.16 × 106 S/cm). Finally, the findings suggest the easy processability of PI nanocomposites and their potential for mechanical and electrical insulation applications.
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Date
2022-11-22
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SAGE Publications
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Keywords
Polyimide, ECR-glass, TiO2, Mechanical, Dielectric, Electrical