杨木CTMP碱性过氧化氢漂白特性的研究  

A study on bleaching characteris-tics of alkaline hydrogen peroxide of aspen CTMP

作　　者：苗庆显[1,2] 侯庆喜[1] 秦梦华[2] 傅英娟[2] 

机构地区：[1]天津科技大学,天津市制浆造纸重点实验室,天津300457 [2]山东轻工业学院制浆造纸教育部重点实验室,济南250353

出　　处：《中华纸业》2008年第11期60-63,共4页China Pulp & Paper Industry

基　　金：国家自然科学基金(项目编号:20376042和20576065);山东省中青年科学家科研奖励基金(项目编号:2006BS02017)资助项目

摘　　要：在机械浆的碱性H2O2漂白过程中,会产生一定量的溶解与胶体物质(Dissolved and Colloidal Substances,简称DCS)。本文利用不同的分析手段(阳电荷需求量和UV吸收)研究了杨木CTMP碱性H2O2漂白过程中漂白工艺对DCS溶出及纸页性能的影响。结果表明:NaOH用量的增加以及温度升高能够促进较多DCS溶出。较高NaOH用量下,H2O2用量增加导致DCS中较多氧化木素溶出。一定温度下,延长漂白时间,也能导致较多的DCS溶出。同时,DCS的溶出有利于提高纸页白度和抗张强度。Some dissolved and colloidal substances（DCS） tend to be released during the alkline hydrogen proxide bleaching of mechanical pulp. Several analytical methods including cationic demand and UV absorbance were used to study the effect of bleaching parameters on the release of dissolved and colloidal substances and properties of paper. The results indicated that the amount of DCS dessolved can increase as the increase of NaOH dosage and temperature rising. The increase of H2O2 dosage resulted in the release of more oxidized lignin at higher dosage of NaOH and more DCS released with the rise of temperature. Meanwhile, prolonging of bleaching time also resulted in more DCS release and higher brightness and improved breaking length.

关 键 词：CTMP DCS 阳电荷需求量 白度 裂断长 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]