摘要
采用硫酸盐法制备桉木硫酸盐浆,经氧脱木质素处理后,对其进行臭氧漂白工艺的研究。探究臭氧漂白过程中浆浓、漂白时间、pH值、臭氧用量等对纸浆漂白性能及成纸性能的影响,得到较优的漂白工艺条件。结果表明,当浆浓为35%、漂白时间3 min、臭氧用量0.9%和pH值为2.0时,所得纸浆白度为76.9%ISO、纸浆黏度为535 mL/g、纸浆Kappa值为2.71,成纸抗张指数、耐破指数、撕裂指数和耐折度分别为57.4 N·m/g、4.77 kPa·m^(2)/g、7.95 mN·m^(2)/g和89次。
In this study,ozone bleaching technology was introduced into bleaching process of eucalyptus kraft pulp after oxygen delignification treatment.The effects of pulp concentration,bleaching time,pH value,and ozone dosage on the properties of bleached pulp and paper were studied;the optimum bleaching conditions were preliminarily obtained.The results show that when 35%concentration of pulp was used in bleaching process with 0.9%dosage of ozone at pH value of 2.0 for 3 min,bleached pulp with 76.9%ISO brightness was produced,the viscosity and Kappa number were 535 mL/g and 2.71,respectively.Moreover,the as-prepared paper has decent physical properties with tensile index,burst index,tear index,and folding strength of 57.4 N·m/g,4.77 kPa·m^(2)/g,7.95 mN·m^(2)/g,and 89 times,respectively.
作者
高其超
杨桂花
张凯
张伟
吉兴香
刘泽华
陈嘉川
GAO Qichao;YANG Guihua;ZHANG Kai;ZHANG Wei;JI Xingxiang;LIU Zehua;CHEN Jiachuan(Key Lab of Biobased Materials and Green Papermaking/Key Lab of Pulp and Paper Science and Technology,Ministry of Education,Qilu University of Technology(Shandong Academy of Sciences),Ji’nan,Shandong Province,250353;Shandong Sun Paper Co.,Ltd.,Yanzhou,Shandong Province,272100;School of Light Industry and Engineering,South China University of Technology,Guangzhou,Guangdong Province,510640)
出处
《中国造纸学报》
CAS
CSCD
北大核心
2023年第1期44-52,共9页
Transactions of China Pulp and Paper
基金
国家自然科学基金(32101464)
山东省重点研发计划(2021CXGC010601)
山东省科教产融合创新试点工程(2022JBZ01-05,2022PY057)。
关键词
桉木
硫酸盐浆
氧脱木质素
臭氧
漂白
eucalyptus
kraft pulp
oxygen delignification
ozone
bleaching
