太陽能板廢玻璃燒製玻璃陶瓷之研究

Recycling Solar Panel Waste Glass Sintered as Glass-ceramics

林凱隆(Kae-Long Lin) ； 鄭敬融(Ching-Jung Cheng) ； 張仁杰(Jen-Chieh Chang)

《環境保護》 32卷1期 (2009/06) Pp. 66-75

https://doi.org/10.30017/EP.200906.0006

摘要

根據行政院環保署事業廢棄物管制資訊網查詢「事業廢棄物清理計畫書」推估2007年太陽能板組裝產品總量約4,588,460 kg/y，以良率96%估算，廢棄太陽能板約為191,186 kg/y。因此如何將太陽能板廢玻璃回收再利用，將是一個重要的課題。此外，太陽能板廢玻璃因其主要氧化物為SiO2及Na2O，具資源化之潛力，故本研究主要係利用燒結技術將太陽能板廢玻璃燒製成玻璃陶瓷，輔以DTA及XRD等分析評估其適性。結果顯示：當樣品被加熱到600－850°C時，玻璃陶瓷樣品之硬度和結晶度有緩慢上升之趨勢，且玻璃陶瓷樣品之結晶度亦隨硬度增加而增加。另外，由DTA試驗得知，其活化能為22.42 kJ/mol。結果得知，所有玻璃陶瓷樣品之密度、硬度、抗折強度與結晶度具相關性。當燒結溫度為850°C時，玻璃陶瓷樣品較為緻密；當樣品加熱形成晶體時，晶核出現生長緩慢現象。綜合上述顯示，太陽能板廢玻璃具作為玻璃陶瓷材料之潛力。

關鍵字

太陽能板 ； 玻璃 ； 玻璃陶瓷 ； 結晶 ； 硬度

並列摘要

The mass of waste solar panels in Taiwan is 191,186 kg per year. The recycling of waste glass from solar panels, therefore, is an important issue. Solar panel waste glass is a potentially valuable source of major oxides, including SiO2, and Na2O. This investigation evaluated the feasibility of converting solar panel waste glass into new glass-ceramic materials, using DTA and XRD. As the material was heated to 600°C and then to 850°C, the hardness and degree of crystallization of the glass-ceramic samples slowly increased. Experimental results demonstrate that the degree of crystallization of the glass-ceramic samples increased with hardness. The activation energy of crystal growth was 22.42 kJ/mol. Density, hardness, and flexural strength were strongly correlated with each other and increased with the degree of crystallization of all sintered samples. The solar panel waste glass that was fired at 850°C had a dense and homogeneous well-sintered microstructure and contained large glass-like zones. The nuclei grew slowly to form crystallites when the samples were heated. This indicates that solar panel waste glass is indeed suitable for the glass-ceramic materials.

並列關鍵字

Solar panel ； Glass ； Glass-ceramic ； Crystallization ； Hardness