静电复印废纸溶剂法脱墨机理初步研究  

Preliminary Study on the Mechanism of De-Inking of Photocopy Waste Paper with Solvent Treatment

作　　者：张久政[1] 武书彬[1] 刘焕彬[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510641

出　　处：《中国造纸学报》2005年第1期74-77,共4页Transactions of China Pulp and Paper

基　　金：国家自然科学基金(批准号:29904002;30371138);教育部留学回国人员基金(教外司留[2003]406号)的部分资助。

摘　　要：采用傅立叶变换红外光谱、图像扫描和显微分析等手段,研究了静电复印废纸溶剂法脱墨的机理。红外光谱分析表明,溶剂将油墨的连接料组分(如苯乙烯丙烯酸树脂等)溶出;油墨粒子的显微分析表明,随着抽提时间的延长,油墨粒子之间的结合越来越松散,从而在碎浆过程中油墨粒子更易被打散,同时,浮选后粘附在纤维上的油墨粒子粒径越来越小,数量也越来越少,但是抽提时间过长使得粒径较小(<12μm)的油墨粒子数量增加,导致浮选效率有一定程度的下降。The mechanism of de-inking of photocopy waste paper with solvent treatment was investigated by Fourier transforming infrared spectrum (FT-IR), image-scanning and microscope analysis. Analyzing results of FT-IR showed that solvent dissolved the compounds of linking material in the toner ink, such as styrene-acrylate; the results of image-scanning and microscope analysis indicated that prolonging solvent treatment time could loosen the binding among the ink particles, therefore the ink particles could be broken easily during pulping process. Meanwhile, the particle size of residual ink adhering on the floated fibers became more and more smaller, the number of the residual ink particles was decreased. However, excessive extraction time probably increased the number of residual ink with the size much smaller than the size of 12 micron meter and led to poor floatation efficiency at a certain extent.

关 键 词：静电复印 溶剂法 脱墨机理 废纸 傅立叶变换红外光谱 油墨粒子 丙烯酸树脂 显微分析 图像扫描 粒子粒径 浮选效率 分析表 苯乙烯 连接料 粒子数 时间 抽提 溶出 

分 类 号：TQ333.92[化学工程—橡胶工业] TB852.25[一般工业技术—摄影技术]