文献类型：期刊文献

中文题名：慈竹薄壁组织的部分去除对化机浆制浆、漂白性能的影响

英文题名：Effect of Partial Removal of Parenchyma Tissues of Neosinocalamus affinis on Pulping and Bleaching Properties of Chemimechanical Pulp

作者：张华兰[1,2] 房桂干[1] 沈葵忠[1,2] 邓拥军[1,2] 李晓亮[3] 韩善明[1]

第一作者：张华兰

机构：[1]中国林业科学研究院林产化学工业研究所、生物质化学利用国家工程实验室、国家林业和草原局林产化学工程重点实验室、江苏省生物质能源与材料重点实验室,江苏南京210042;[2]中国林业科学研究院林业新技术研究所,北京100091;[3]山东华泰纸业股份有限公司,山东东营257335

年份：2019

卷号：53

期号：4

起止页码：31-36

中文期刊名：生物质化学工程

外文期刊名：Biomass Chemical Engineering

收录：北大核心:【北大核心2017】；

基金：国家重点研发计划资助(2017YFD0601005);中国林科院中央级公益性科研院所基本科研业务费专项资金(CAFYBB2016SY029);山东广饶乐安学者人才工程(无编号)

语种：中文

中文关键词：竹材;薄壁组织;制浆性能;漂白性能;纸浆强度

外文关键词：bamboo;parenchyma tissues;pulping properties;bleaching properties;pulp strength

分类号：TQ35

摘要：采用螺旋挤压法破坏竹片组织结构,并筛除分离部分薄壁组织,选用不同的化学预浸渍方法进行浸渍软化,对制得的不同化学机械浆(CMP)进行过氧化氢漂白对比试验。结果表明:螺旋挤压法去除11.4%薄壁组织后,竹丝化学组成与原竹片相比差异十分明显,其灰分质量分数降低了38.6%,纤维素质量分数增加了4.71%,但螺旋挤压对竹纤维没有造成明显的损伤;碱性过氧化氢(AP)预浸渍可以显著降低磨浆电耗,在加拿大游离度300mL时,该方法比烧碱(AA)法节电18.0%,并且其化机浆的结合强度较高;AA法浆料的松厚度最高、强度较差;碱性亚硫酸钠(AS)法化机浆的松厚度和强度性能介于AP和AA之间;在H2O2用量为8%的漂白条件下,AP、AS和AA预浸渍法的最佳碱用量分别为4.5%、4.5%和3.5%,同时AP预浸渍可以改善漂白效率,漂后浆白度可达56.8%(ISO),而AA预浸渍化机浆漂白浆白度仅为49.9%(ISO)。
The microstructure of bamboo chips was destoried by screw extrusion and part of parenchyma tissues were removed by screening.The obtained bamboo chips were impregnated individually by using different chemical impregnation,i.e.alkaline peroxide(AP),caustic soda(AA) and alkaline sodium sulfite(AS) and followed with atmospheric high consistency refining operation,those different chemimechanical pulps(CMP) were bleached with multiple-stage alkaline peroxide bleaching sequence and the bleached chemimechanical pulps(BCMP) were compared their bleach abilities.Results showed that,the chemical compositions of bamboo chips by removing 11.4% parenchyma tissues were significant different from these of initial bamboo chips,for instance,ash content decreased by 38.6%,cellulose content increased by 4.71%.But screw extrusion didn't cause obvious damage to bamboo fiber.AP impregnation could significantly reduce the refining energyconsumption,which was 18% less than that of AA impregnation as the Canadian standard freeness was 300 mL,and improve the bonding strength of CMP.AA impregnation produced pulps with better bulk properties but poor strength,these properties of AS pulps located among AP and AA pulps;by suing the same H2O2 dosage of 8.0%,the optimal alkali dosages of AP,AS and AA impregnation 4.5%,4.5% and 3.5%,the bleached pulp brightness of 56.8%(ISO) was achieved from AP impregnation process,but only 49.9%(ISO) obtained from AA process.