中国造纸Issue(7)：1-6,6.
镁碱取代钠碱的杨木P-RC APMP高浓停留段工艺参数优化
Optimizing the Process Parameters in High-Consistency Retention Stage of Triploid Poplar P-RC APMP by Partially Substituting MgO for NaOH
摘要
Abstract
The effects of bleaching time, NaOH and H2O2 dosages in high-consistency retention stage of triploid poplar P-RC APMP on the pulp physical and optical properties were investigated. The three parametes were optimized mainly based on the brightness and the bulk of die handsheets. Under the optimized process conditions, the influences of various substitution percentages of MgO for NaOH on physical and optical properties of the pulp were studied. The results showed that the optimized parameters were 90 min of bleaching time, 3.5% NaOH and 3, 5% H2O2. Under the optimized process conditions, with the increase of the substitution percentage of MgO for NaOH in the high-consistency retention stage (from 0% to 60% ) , the optical properties of the handsheets were improved, but the physical strength properties were decreased. As the MgO substitution percentage was 40% , the resultant P-RC APMP pulp could have a 2. 4 ISO units brightness gain, a higher bulk and light-scattering coefficient, while the tensile index and the tear index were decreased by 23. 9% and 22.4%, respectively, compared to those without any MgO substitution.关键词
三倍体毛白杨/P-RC APMP/高浓停留段/MgOKey words
triploid poplar/P-RC APMP/high-consistency retention stage/MgO分类
轻工纺织引用本文复制引用
赵江鹏,侯庆喜..镁碱取代钠碱的杨木P-RC APMP高浓停留段工艺参数优化[J].中国造纸,2011,(7):1-6,6.基金项目
本课题得到中加政府国际科技合作项目(2008DFA91290)、国家自然科学基金项目(31070528)及天津市科技创新体系及条件平台建设计划项目(10SYSYJC28000)资助. （2008DFA91290）
