Optimization of composite materials with high emissivity/reflectivity for sports apparel application

Clothing act as a layer of insulation as it acts as a barrier between heat transfer and evaporation from the human skin surface to the environment. In a warm environment, additional clothing increases thermal insulation which causes rapid increase in temperature, thereby exhibiting warming effects o...

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Main Author: Ong, Vanetta Si En
Other Authors: Alfred Tok Iing Yoong
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2021
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Online Access:https://hdl.handle.net/10356/148022
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1480222023-03-04T15:46:44Z Optimization of composite materials with high emissivity/reflectivity for sports apparel application Ong, Vanetta Si En Alfred Tok Iing Yoong School of Materials Science and Engineering Sportmaster MIYTok@ntu.edu.sg Engineering::Materials Clothing act as a layer of insulation as it acts as a barrier between heat transfer and evaporation from the human skin surface to the environment. In a warm environment, additional clothing increases thermal insulation which causes rapid increase in temperature, thereby exhibiting warming effects on the body. On the other hand, clothing could exhibit cooling effects on the body as it could act as a protective layer that prevents thermal stress and radiant heat gain. This project investigates the potential of a fabric containing additives to exhibit warming and cooling effects. The additives selected to analyse in this study were based on their theoretical capabilities to exhibit these effects. The additives analysed in this project includes Mica-black, Mica-gold, BN Boron Nitride (BN), Titanium Oxide (TiO2), Silicon Carbide (SiC) and Zirconium Carbide (ZrC) of particle size at 500nm and 10μm. Fabrics were coated using Pebax as the base polymer matrix with additives. This report details the methodology to coat the fabrics. The fabric containing additives were characterized through the UV-Vis-NIR, Lamp Test with Infrared (IR) Camera, Fourier Transform Infrared Spectroscopy (FTIR) and the Bottle Test. The additives in powder form were measured using the Far Infrared Emissivity Analysis System. Two main spectrum, the Near Infrared (NIR) and Mid Infared (MIR) were studied in detailed. The NIR spectrum is closely related to solar radiation due to their similarity in wavelength. Hence, the Lamp Test with IR camera was designed to mimic the solar energy irradiating onto the fabric. The MIR is closely related to the thermal radiation from a human body due to their similarity in wavelength. Thus, the Bottle Test was designed to simulate a fabric on human. It was found that within the NIR range, BN and TiO2 are ideal materials for cooling while ZrC (500nm) and ZrC (10μm) are potential materials for warming. Results for the MIR range showed that SiC and ZrC (10 μm) are ideal materials for warming. Materials capable for cooling in the MIR were inconclusive and requires further studies. Bachelor of Engineering (Materials Engineering) 2021-04-21T02:25:20Z 2021-04-21T02:25:20Z 2021 Final Year Project (FYP) Ong, V. S. E. (2021). Optimization of composite materials with high emissivity/reflectivity for sports apparel application. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/148022 https://hdl.handle.net/10356/148022 en application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
spellingShingle Engineering::Materials
Ong, Vanetta Si En
Optimization of composite materials with high emissivity/reflectivity for sports apparel application
description Clothing act as a layer of insulation as it acts as a barrier between heat transfer and evaporation from the human skin surface to the environment. In a warm environment, additional clothing increases thermal insulation which causes rapid increase in temperature, thereby exhibiting warming effects on the body. On the other hand, clothing could exhibit cooling effects on the body as it could act as a protective layer that prevents thermal stress and radiant heat gain. This project investigates the potential of a fabric containing additives to exhibit warming and cooling effects. The additives selected to analyse in this study were based on their theoretical capabilities to exhibit these effects. The additives analysed in this project includes Mica-black, Mica-gold, BN Boron Nitride (BN), Titanium Oxide (TiO2), Silicon Carbide (SiC) and Zirconium Carbide (ZrC) of particle size at 500nm and 10μm. Fabrics were coated using Pebax as the base polymer matrix with additives. This report details the methodology to coat the fabrics. The fabric containing additives were characterized through the UV-Vis-NIR, Lamp Test with Infrared (IR) Camera, Fourier Transform Infrared Spectroscopy (FTIR) and the Bottle Test. The additives in powder form were measured using the Far Infrared Emissivity Analysis System. Two main spectrum, the Near Infrared (NIR) and Mid Infared (MIR) were studied in detailed. The NIR spectrum is closely related to solar radiation due to their similarity in wavelength. Hence, the Lamp Test with IR camera was designed to mimic the solar energy irradiating onto the fabric. The MIR is closely related to the thermal radiation from a human body due to their similarity in wavelength. Thus, the Bottle Test was designed to simulate a fabric on human. It was found that within the NIR range, BN and TiO2 are ideal materials for cooling while ZrC (500nm) and ZrC (10μm) are potential materials for warming. Results for the MIR range showed that SiC and ZrC (10 μm) are ideal materials for warming. Materials capable for cooling in the MIR were inconclusive and requires further studies.
author2 Alfred Tok Iing Yoong
author_facet Alfred Tok Iing Yoong
Ong, Vanetta Si En
format Final Year Project
author Ong, Vanetta Si En
author_sort Ong, Vanetta Si En
title Optimization of composite materials with high emissivity/reflectivity for sports apparel application
title_short Optimization of composite materials with high emissivity/reflectivity for sports apparel application
title_full Optimization of composite materials with high emissivity/reflectivity for sports apparel application
title_fullStr Optimization of composite materials with high emissivity/reflectivity for sports apparel application
title_full_unstemmed Optimization of composite materials with high emissivity/reflectivity for sports apparel application
title_sort optimization of composite materials with high emissivity/reflectivity for sports apparel application
publisher Nanyang Technological University
publishDate 2021
url https://hdl.handle.net/10356/148022
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