|
|||||
|
|
Nano-BN/Nano-TiO2 and micro Mg(OH)2 loaded hybrid ethylene propylene diene monomer elastomer composites for outdoor high-voltage insulation application |
|
| Authors: | Mohammed Rizwan Aabid Hussain Shaik Ariful Rahaman T Umashankar Patro Mostafizur Rahaman Govindasami Periyasami Mohammed Rehaan Chandan |
| Affiliation: | 1. Colloids and Polymers Research Group, School of Chemical Engineering, Vellore Institute of Technology, Vellore, Tamilnadu, India
Contribution: Data curation (lead), ?Investigation (equal), Methodology (equal), Writing - original draft (lead), Writing - review & editing (equal);2. Colloids and Polymers Research Group, School of Chemical Engineering, Vellore Institute of Technology, Vellore, Tamilnadu, India Contribution: Formal analysis (equal), Writing - review & editing (supporting);3. School of Mechanical Engineering, Vellore Institute of Technology, Vellore, Tamilnadu, India Contribution: Formal analysis (supporting), Visualization (supporting), Writing - review & editing (supporting);4. Department of Materials Engineering, Defence Institute of Advanced Technology, Pune, Maharashtra, India Contribution: Formal analysis (equal), Resources (supporting), Visualization (supporting), Writing - review & editing (supporting);5. Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia Contribution: Data curation (supporting), Writing - review & editing (supporting);6. Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia Contribution: Data curation (supporting);7. Colloids and Polymers Research Group, School of Chemical Engineering, Vellore Institute of Technology, Vellore, Tamilnadu, India |
| Abstract: | This work deals with the synthesis, characterization of hybrid ethylene propylene diene monomer (EPDM) composites loaded with nano-boron nitride (nano-BN)/nano-titanium dioxide (nano-TiO2) and micro Mg(OH)2 particles for its suitability towards high-voltage insulation application. The elastomer samples were prepared by carefully dispersing the micro and nano fillers during the mastication process of EPDM polymer using a two roll mill, followed by vulcanization. The samples were characterized for mechanical, morphological, thermal, and electrical insulation properties. The highest tensile strength among the composite samples was noted for 1 phr nanoparticles loaded samples. Fourier Transform Infrared (FTIR) results show no change in the chemical moiety upon addition of nano-BN/nano-TiO2 in EPDM composites. Enhancement in hydrophobicity is observed for 3 phr nano-TiO2 loaded composites, which shows a maximum static contact angle of 110°. Meanwhile remarkable enhancement in the thermal conductivity and volume resistance of the composites are contributed to the addition of nano-BN, thereby achieving maximum dielectric breakdown voltage (i.e., ~21 kV/mm for EMB3). Scanning electron microscope images and atomic force microscopy (AFM) topography highlight that low concentration (i.e., 1 phr) based composites have homogeneous dispersion in matrix and excessive nano filler addition deteriorates properties by forming filler aggregates and increasing surface roughness. |
| Keywords: | dielectric breakdown strength ethylene propylene diene monomer high-voltage insulation magnesium hydroxide nano fillers |