AI Article Synopsis
- Most polyols for polyurethane foam are currently made from petrochemicals, but this study explores using renewable castor oil to create an environmentally friendly alternative.
- The research aims to develop a bio-based, low-density material that protects against electromagnetic interference (EMI) for various applications in communication, aerospace, and electronics.
- The study combines flexible bio-based polyurethane foam with nanoparticles (graphite nanoplates, zirconium oxide, bamboo charcoal) and finds that specific weight percentages of these materials can achieve a maximum EMI shielding effectiveness of 28.03 dB in the 8-12 GHz frequency range.
Article Abstract
Today, most commercial polyols used to make polyurethane (PU) foam are produced from petrochemicals. A renewable resource, castor oil (CO), was employed in this study to alleviate concerns about environmental contamination. This study intends to fabricate a bio-based and low-density EMI-defending material for communication, aerospace, electronics, and military appliances. The mechanical stirrer produces the flexible bio-based polyurethane foam and combines it with nanoparticles using absorption and hydrothermal reduction processes. The nanoparticles used in this research are graphite nanoplates (GNP), zirconium oxide (ZrO), and bamboo charcoal (BC). Following fabrication, the samples underwent EMI testing using an EMI test setup with model number N5230A PNA-L. The EMI experimental results were compared with computational simulation using COMSOL Multiphysics 5.4 and an optimization tool using response surface methodology. A statistical design of the experimental approach is used to design and evaluate the experiments systematically. An experimental study reveals that a 0.3 weight percentage of GNP, a 0.3 weight percentage of ZrO, and a 2.5 weight percentage of BC depict a maximum EMI SE of 28.03 dB in the 8-12 GHz frequency band.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9413289 | PMC |
| http://dx.doi.org/10.3390/polym14163344 | DOI Listing |
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