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題 名 | 射出成型燃料電池雙極板導電性能模擬之研究=Study on the Conductivity Performance Simulation of Injection Molded Bipolar Plate for Fuel Cells |
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作 者 | 李平惠; 林俊源; 林鴻志; | 書刊名 | 桃園創新學報 |
卷 期 | 34 2014.12[民103.12] |
頁 次 | 頁17-30 |
分類號 | 468.1 |
關鍵詞 | 雙極板; 碳纖維; 配向; Bipolar plate; Carbon fiber; Orientation; |
語 文 | 中文(Chinese) |
中文摘要 | 燃料電池(Fuel Cell)的雙極板(Bipolar Plate)佔據全部電池大半主體,是燃料電池的主要元件,以高分子導電性複合材料成型之雙極板,具有重量輕、抗腐蝕佳、成本低、加工快的優點,若能於導電度上有所突破,就能逐漸取代石墨或金屬雙極板。本研究主要是選取聚酚硫(PPS)+50wt%碳纖維(CF)基材以Mold Flow V.4.1分析軟體,藉由改變不同重量比例石墨(GP)(0wt%, 10wt%, 20wt%)與流道配置的方向(進澆口分別平行和垂直流道方向)以射出成型參數模擬結果與實驗結果進行比較,並探討射出成型製作燃料電池雙極板製程中,對碳纖維配向、分佈與導電性之影響。 研究結果顯示,利用PPS+50wt%CF+20wt%GP,以模溫210℃、料溫330℃、射速60 mm/s、保壓150 MPa之製程參數針對各種流道配置(含無流道)雙極板射出成型模擬結果與實驗結果皆相當一致。同時經由觀察發現遠澆口區域剪切層與表皮層皆有碳纖維相互交錯配向分佈的情形,平面導電度為92 S/cm;流道配置的方向在垂直流道方向,在流道區域碳纖維交錯不規則且明顯,驗證流道垂直充填方向平板導電性與導電均勻性皆佳,平面導電度可達到112 S/cm。 |
英文摘要 | Bipolar plate is an important component of a fuel cell. Electrically conductive polymer composites for molding of bipolar plates, has the advantages of lightweight, low cost, chemical stability, and ease of fabrication. They will can alternative to graphite and metal-based material if one can improve the conductivity of polymer composite. In this study, using PPS polymer filled with 50wt% carbon fiber substrate, 3D-CAE simulation for fiber orientation and dispersion phenomenon during filling process was also investigated and compared with injection molding experiment. changing the different content of graphite (0wt%, 10wt%, 20wt%) and flow direction (parallel and perpendicular to the flow channel direction, respectively) by injection molding parameters simulation results were compared with experimental results, Meanwhile, influence of fiber orientation and distribution for electrical conductivity was also evaluated. The results showed that the injection molding simulation results were all consistent with experimental results for bipolar plate with and without flow channel under the better molding condition was chosen (mold temperature 210℃, melt temperature 330℃, injection velocity 60 mm/s, packing pressure 150 MPa), and also found that far from the gate area shear layer and skin layer has carbon fiber intertwined with the distribution; At a graphite level of 20 wt%, the in-plane conductivity can reached 92 S/cm and channel is perpendicular to filling direction for injection molding, the in-plane conductivity can reached 112 S/cm. |
本系統中英文摘要資訊取自各篇刊載內容。