以微波發泡廢液晶玻璃製作建築輕骨材之開發(2年之第1年)
| 中文摘要 | 在『眼球革命』的科技產業中，台灣TFT-LCD面板製造全球佔有率約39.2％，在製造過程中勢必衍生大量廢棄材料，在未來10年將產生可觀的廢棄TFT-LCD面板。 利用微波感應加熱方式，使液晶玻璃表層原有的ITO電路感應產生電流，使玻璃內部均勻分布氣泡，初估約減少80%的回收製程時間，同時使玻璃碎片外型球形化。 使用陶土坩堝為容器，能在微波4.5分鐘加熱至925℃，同時兼具在降溫過程陶土坩堝具有良好的保溫效果，使發泡液晶玻璃球無破裂之虞。 發泡玻璃球外觀尺寸介於1mm~3mm，且玻璃球內部孔洞小，氣泡尺寸範圍55~120μm、密度由1.245g/cm3下降至約1.105g/cm3，孔隙量為11.2vol%；在隔熱效果方面，以5W電熱片作為隔熱測試熱源平均溫度約95℃，發泡前後液晶玻璃溫度差可高達3℃~4℃，熱阻R值提升13.1%~ 22.8%。以熱失重分析發現100g液晶玻璃中約有1.17g~1.3g，都在500℃以前移除，600℃~1100℃重量曲線變化呈現平穩下降模式，變化不大。三點抗壓強度的結果中，添加多孔玻璃球，使破裂強度由358.33N降低至282.15 N，伸長率由14.15%變為11.6%，降伏點維持在10%，楊氏係數由26MPa提高到70MPa，剛性提高將近2.7倍。隔音測試中，其Rw由40提高至47，效果顯著，觀察玻璃與水泥的接合，其破斷面部分玻璃球被拔出現象，介面接合大抵良好，特性合乎輕骨材所需。 | ||
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| 中文關鍵字 | 廢液晶顯示器、微波發泡、多孔玻璃球 | ||
基本資訊
| 專案計畫編號 | EPA-105-XA05 | 經費年度 | 105 | 計畫經費 | 15000 千元 |
|---|---|---|---|---|---|
| 專案開始日期 | 2016/01/01 | 專案結束日期 | 2016/11/30 | 專案主持人 | 王振興 |
| 主辦單位 | 回收基管會 | 承辦人 | 劉倩 | 執行單位 | 遠東科技大學 |
成果下載
| 類型 | 檔名 | 檔案大小 | 說明 |
|---|---|---|---|
| 期末報告 | 105行政院環境保護署委託研究(期末)定稿.pdf | 6MB |
Development of waste LCD glass foaming to be building light aggregate by microwave
| 英文摘要 | The waste LCD glass with small bubbles was studied. The bulk material with pores on the surface and full bulk was fabricated by microwave heating. The fabrication and mechanism of the porous process by microwave heating on the surface and full bulk of waste LCD glass were researched in this study. The general glasses are not heated by microwave induction, but find that proper microwave medium materials could be heated directly by microwave. These results were analyzed by scanning electron microscope for microstructure, by infrared thermometer for temperature and loss of weight. The microwave medium materials, microwave power, and type of refractory crucible were the major parameters in this process. The results were divided into three parts, first was the parameters of this porous process by microwave heating, second was corresponding porous properties of the waste glass. The microwave heating conditions were controlled at power 0-720W for 1-20 min in the oxidation experiment.The mechanism of pores formed on the surface of the glass substrate was described as follows. When microwave energy was absorbed by organic and the temperature was increased, the surface region glass adjacent to hot organic powders reduce the viscosity, which was beneficial for organic sink gradually into it. Then the surface traces and river like were generated before oxidation reaction of organic powders on the surface. The kinds of the pores can be divided into open and closed pore. In the early stage there will be a closed pore, the pore size was increased as organic combustion impelled. Because of high temperature the shape of glass specimen was to be deformed. Using the clay crucible for the container in the microwave stove, the temperature can arrive 925 ℃for 4.5 minutes. The size of the foamed glass ball was between 1mm and 3mm, and the pore size was 55 ~ 120μm. The density decreases from 1.245g / cm3 to about 1.105g / cm3, which the pore volume was 11.2 vol%. The absorb radiation heat test show that the average temperature of the heat source was about 95 ℃ and the temperature difference of the LCD glass can be as high as 3 ℃ ~ 4 ℃ before and after foaming. The R value of thermal resistance was increased to 13.1% ~ 22.8%.The results of three-point compressive strength showed that the addition of porous glass spheres reduced the fracture strength from 358.33N to 282.15 N, and the elongation from 14.15% to 11.6%. The yield point was maintained at 10% and the Young's modulus increased from 26MPa to 70MPa, Rigidity increased nearly 2.7 times. In sound insulation test, the Rw value increased from 40 to 47. After observing the interface of the glass and cement, the effect of glass ball on fracture face was significant. The broken part of the glass ball was pulled out phenomenon, the interface was generally good. The characteristics of porous glass ball meet the properties of light cement additive. | ||
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| 英文關鍵字 | waste LCD glass、microwave blowing、porous glass ball | ||