矽藻土複合相變化材料之研究

本研究使用廢棄矽藻土製備環保且具有功能化的形狀穩定之複合相變化材料（SSPCM），SSPCM添加入尼龍以形成熱能調節紡織品。為了避免PCM洩漏，PCM吸附在結構穩定的矽藻土中。純化的矽藻土(HD)使用直接浸漬過程來吸附聚乙二醇（PEG）形成SSPCM。 HD表現出高達58 m2g-1的表面積和較低的有機雜質（<1％）; SSPCM表現出45 Jg-1的高潛熱和低滲漏（<0.2％）。熱循環測試在50次循環後也表現出優異的穩定性。通過在尼龍中加入SSPCM，複合材料的Td5從426.3 oC提高到442.1 oC。NCPCM7複合材料分別具有54.89J/m和45.95MPa的衝擊強度和拉伸強度。吸水性結果顯示，添加矽藻土能過增加複合材料之吸水性。NCPCM7可將溫度從34.9 oC降低至32.7 oC。抗菌測試分析，複合材料的抗菌率達到96%以上，具有良好的抗菌效果。

關鍵字

矽藻土；形狀穩定之複合相變化材料；尼龍；聚乙二醇

並列摘要

In this study reports on the functionalization of recycled diatomite for preparing green and shape-stabilized phase change material (SSPCM); the SSPCM can be employed in Nylon to form thermo-regulating textiles. To avoid PCM leakage, PCM is adsorbed on diatomite with a stable structure. The purified diatomite(HD)adsorbs polyethylene glycol(PEG) by the straight dipping process for producing SSPCM. HD shows a high surface area of 58 m2g-1 and low organic impurity (<1%); the PEG/P-DT SSPCM exhibited high latent heat of 45 Jg-1 and low leakage (<0.2%). The thermal cycling test also showed excellent stability after 50 cycles. By adding SSPCM into the Nylon, the composite improved the 5% decomposition temperature (Td5) from 426.3oC to 442.1oC. The composite NCPCM7 exhibited impact and tensile strengths of 54.89 J/m and 45.95 MPa, respectively. The water absorption test results show that the addition of diatomite can increase the water absorption of the composite material. Moreover, NCPCM7 can reduce the temperature from 34.9 oC to 32.7 oC. Antibacterial test analysis, the antibacterial potential of the composite material reached more than 96%, with good antibacterial effect.