杨木化机浆使用荧光增白剂的增白性能研究  

Research on the Whitening Efficiency of Fluorescent Whitening Agents for Aspen Chemi-mechanical Pulp

作　　者：王建[1] 周晓伟[1] 宫伟[1] 

机构地区：[1]陕西科技大学造纸工程学院,陕西西安710021

出　　处：《中国造纸学报》2010年第3期35-37,共3页Transactions of China Pulp and Paper

摘　　要：对比了液体荧光增白剂(OBA)及固体荧光增白剂(VBL)对杨木化机浆的增白效果,研究了表面喷淋及浆内添加荧光增白剂的增白效果。结果显示,OBA对杨木化机浆的增白效果明显好于VBL的;表面喷淋荧光增白剂的增白效果优于浆内添加的;OBA对染色和返黄后杨木化机浆的增白效果不同,表面喷淋0.5%的OBA,染色后白度75.8%的杨木BCTMP的白度提高11.2个百分点,白度达87.0%,与未染色的杨木BCTMP相比,增白后两者的白度仅相差0.7个百分点,而白度为75.1%的返黄杨木BCTMP的白度只增加4.2个百分点,白度为79.3%。In recent years,chemi-mechanical pulp with its unique properties has been found increased applications in many high grade papers.However,the characteristic of the pulp leads to the lower whitening efficiency of the fluorescent whitening agents that restricts the brightness of the paper made from chemi-mechanical pulp.In this paper,the OBA whitening agent and VBL whitening agent were used to increase the brightness of aspen chemi-mechanical pulp.The results showed that the OBA whitening agent has higher whitening efficiency than the VBL whitening agent.The ways of application will directly affect the whitening efficiency of brightening agent,and spraying on the surface of the paper is more effective than adding in the furnish.The dyeing and brightness reversing of the pulp have different effects on the whitening efficiency of OBA.The brightness of the paper made of the dyed pulp（brightness 75.8%） increases to 87.0% by spraying 0.5% OBA on the paper surface;the brightness of the paper made of the brightness reverse pulp（brightness 75.1%） increases to 79.3%.

关 键 词：杨木化机浆 荧光增白剂 增白效果 

分 类 号：TS727.1[轻工技术与工程—制浆造纸工程]