杨木P-RCAPMP工艺中MgO部分替代NaOH对溶解与胶体物质的影响  

Effects of Partial Substitution of MgO for NaOH on Dissolved and Colloidal Substances in Poplar P-RC APMP

作　　者：陈威 刘苇[1,2] 汪兵 侯庆喜 施哲晨 CHEN Wei;LIU Wei;WANG Bing;HOU Qingxi;SHI Zhechen(Tianjin Key Laboratory of Pulp and Paper,College of Papermaking Science and Technology,Tianjin University of Science & Technology,Tianjin 300457,China;State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]天津科技大学造纸学院天津市制浆造纸重点实验室,天津300457 [2]华南理工大学制浆造纸工程国家重点实验室,广州510640

出　　处：《天津科技大学学报》2017年第5期39-44,共6页Journal of Tianjin University of Science & Technology

基　　金：国家自然科学基金资助项目(31070528);制浆造纸工程国家重点实验室开放基金资助项目(201501)

摘　　要：杨木P-RC APMP制浆过程中,在高浓停留段采用MgO部分替代NaOH作为碱源,并研究其对溶解与胶体物质(DCS)的影响.结果表明,随着制浆过程中MgO取代量的增加,DCS和溶解物质(DS)水样的pH、质量浓度、电导率和阳离子需求量均呈下降趋势.DCS中电导率和阳离子需求量主要由DS提供.MgO取代量的增加在提高浆张松厚度及光散射系数的同时也会引起其强度性能的部分降低.In this study,different percentages of MgO were used to substitute for NaOH at the high-consistency retentionstage of poplar P-RC APMP,and the effects of the substitution of MgO for NaOH on dissolved and colloidal substances(DCS)were studied.The results showed that the pH,mass concentration,conductivity and cationic demand(CD)of the DCSand dissolved substances(DS)were reduced with the increase of substitution percentage of MgO for NaOH.The conductivityand CD of DCS are mainly attributed to DS.The bulk and light-scattering coefficient of the P-RC APMP handsheet were increasedwhile its strength properties were decreased with the increase of substitution percentage of MgO for NaOH.

关 键 词：MGO P-RCAPMP 溶解与胶体物质 强度性能 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]