CAJ | 학술논문

废液晶显示器（ LCD）面板的资源化回收利用中，需考虑对偏光片的处理。在超声波和加热作用下，利用强碱对废液晶显示器面板上的偏光片进行剥离，分析了温度、碱液浓度和超声波频率对偏光片剥离效果的影响。依次通过浓硫酸和王水对剥离偏光片后的玻璃基板进行酸浸，分析各浸出阶段的铟溶出特性。结果表明，在超声波作用下，在一定温度（50～80℃）内，利用NaOH溶液可实现废液晶显示器面板偏光片的高效分离；当温度为70℃、超声波频率为45 kHz、NaOH浓度为0．1mol∕L时，偏光片的剥离仅需37 min；NaOH溶液为0．1和0．3 mol∕L时，化学剥离过程中未发生铟元素转移的问题。
폐액정현시기（ LCD）면판적자원화회수이용중，수고필대편광편적처리。재초성파화가열작용하，이용강감대폐액정현시기면판상적편광편진행박리，분석료온도、감액농도화초성파빈솔대편광편박리효과적영향。의차통과농류산화왕수대박리편광편후적파리기판진행산침，분석각침출계단적인용출특성。결과표명，재초성파작용하，재일정온도（50～80℃）내，이용NaOH용액가실현폐액정현시기면판편광편적고효분리；당온도위70℃、초성파빈솔위45 kHz、NaOH농도위0．1mol∕L시，편광편적박리부수37 min；NaOH용액위0．1화0．3 mol∕L시，화학박리과정중미발생인원소전이적문제。
The recycling process of waste LCD panel should take into consideration of the removal of the polarizer. With the aid of ultrasonic wave and heating, the polarizer was stripped by alkali solution.The influences of the temperature, concentration of alkali and ultrasonic frequency on the separation of the polarizer were analyzed.And then the glass substrate was extracted by concentrated sulfuric acid and aqua regia successively.The leaching characteristics of indium were also analyzed.The result showed that in the presence of ultrasonic wave and under the temperature range of 50-80 ℃, the polarizer could be separated efficiently from waste LCD panel by sodium hydroxide solution.Besides, the separation of the polarizer only took 37 min with the temperature of 70 ℃, ultrasonic frequency of 45 kHz and NaOH concentration of 0.1 mol∕L.The transfer of the indium did not occur during the process of the chemical stripping when the concentration of NaOH was 0.1 and 0.3 mol∕L.