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  • 學位論文

製作固態氧化物燃料電池的電解質層中高分子黏結劑之最佳化加熱移除策略

The optimal heating strategy for the binder removal in the electrolyte fabrication of solid oxide fuel cells

指導教授 : 廖朝光
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摘要


本文主要研究在製作固態氧化物燃料電池(Solid Oxide Fuel Cell, SOFC)中電解質材料與黏結劑PVB間的熱解動力影響和最短的移除時間。由於製作的過程中添加高分子黏結劑,而黏結劑與電解質陶瓷材料熱解過程的影響,以PVB/陶瓷材料分別在氮氣與空氣下,依不同添加組成、以及不同操作溫度,分析其熱解時的反應動力。以熱重分析儀(Thermo-gravimetric analysis,TGA)觀察複合材料的熱重損失曲線,利用Arrhenius關係式,以等轉化率的原則,求得樣品的熱解動力參數。再由高分子黏結劑的熱解動力與胚體內黏結劑熱解產生氣體的質傳現象,建立三維氣體輸送模型,模擬氣體壓力在胚體內的變化與分佈情形,在不使陶瓷胚體產生缺陷的狀況下,設定陶瓷胚體發生破裂的最大壓力為限制條件,以最適化控制策略,尋求最佳升溫速率並使黏結劑燒除製程能在最短時間內完成。

並列摘要


The removal of PVB binder with ZrO2 and Y2O3 the electrolyte materials of Solid Oxide Fuel Cells (SOFCs) was studied. The kinetic equations of thermal degradation of PVB with different composition of ZrO2 and Y2O3 were determined. In addition, the minimum time required to remove the binder was calculated using a dynamic optimization stratagem. Kinetic parameters of the composite sample were estimated by thermogravimetry (TG) measurements and a non-linear heating algorithm. Results of the kinetic analysis revealed that the thermal degradation of PVB is affected by the present of the ceramics. The volatile gas evolved from the PVB thermal degradation can generate certain pressure inside the ceramic body. The build-up pressure distribution in the ceramic body described by the mass transport and the kinetic of thermal degradation models can be determined using numerical simulation. The pressure can affect the generation of the ceramic defects and have to be controlled by the heating conditions. The minimum time under constrains to remove the binder can be estimated by the dynamic optimization approach.

參考文獻


謝俞枰,“ 低溫共燒陶瓷製程奈米二氧化矽添加於PVB/玻璃陶瓷之熱解動力分析 ”,元智大學,碩士論文,民國九十三年七月。
邱吉晟,“ 生陶瓷體內高分子黏合劑熱解程序之最佳化控制 ”,元智大學,碩士論文,民國九十三年七月。
Dean-Mo Liu, Wenjea J. Tseng.“ Binder removal from injection moulded zirconia ceramics ”, Ceramics International 25, 529-534 (1999)
F. Snijkers, A. de Wilde, S. Mullens, J. Luyten.“ Aqueous tape casting of yttria stabilised zirconia using natural product binder ”, Journal of the European Ceramic Society 24, 1107-1110 (2004)
J. A. Lewis,“ Binder removal from ceramics ”, Annu. Rev. Mater. Sci., 27, 147-173 (1997)

被引用紀錄


賴秋梅(2008)。PVB/Ni與PVB/YSZ雙層圓柱組成系統之最佳化燒結程序〔碩士論文,元智大學〕。華藝線上圖書館。https://doi.org/10.6838/YZU.2008.00315
陳忠群(2007)。固態氧化物燃料電池之電解質最佳化燒結製作程序的控制〔碩士論文,元智大學〕。華藝線上圖書館。https://doi.org/10.6838/YZU.2007.00129
林郁峰(2006)。圓柱型固態氧化物燃料電池的電解質層中 黏著劑燒除之動態最佳化程序〔碩士論文,元智大學〕。華藝線上圖書館。https://doi.org/10.6838/YZU.2006.00275

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