柠条APMP浆漂白特性的研究
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摘要
目的研究柠条APMP浆H_2O_2单段、两段以及H_2O_2-Na_2S_2O_4两段的漂白特性。方法研究H_2O_2单段漂中H_2O_2用量、温度和反应时间,以及两段漂中H_2O_2和Na_2S_2O_4的用量对漂后纸浆成纸的白度和各项物理性能影响,了解柠条APMP浆的漂白特性。结果得到了柠条APMP浆H_2O_2单段漂的最佳工艺条件,H_2O_2质量分数为5.0%,温度为80℃,时间为90 min。在该条件下,纸浆的白度从47.71%提高到64.87%,白度提高了36%,且成纸的抗张强度、耐破强度和撕裂强度都得到提高。在H_2O_2用量一定的条件下,柠条APMP浆H_2O_2两段漂的效果优于H_2O_2单段漂;H_2O_2-Na_2S_2O_4两段漂后纸浆的白度较H_2O_2单段漂虽有所提高,但漂后浆成纸的结合强度均低于H_2O_2单段漂。结论柠条APMP浆可以采用H_2O_2单段和两段漂,其中H_2O_2两段漂的效果优于单段漂。
The paper aims to study the bleaching characteristics of caragana korshinskii APMP pulp with single-stage two-stage H_2O_2 and two-stage H_2O_2-Na_2S_2O_4.The bleaching characteristics of Caragana Korshinskii APMP pulp and the effects of the dosage of H_2O_2,reaction temperature and time in single H_2O_2 bleaching and the dosage of H_2O_2 and Na_2S_2O_4 in two-stage bleaching on the brightness and physical properties of bleached pulp were investigated.The optimum condition of single-stage H_2O_2 bleaching was as follows:the dosage of H_2O_2 was 5.0%,the bleaching temperature was 80℃,and the bleaching time was 90 min.Under these conditions,the whiteness of pulp increased from 47.71%to 64.87%,whiteness increased by 36%and the tensile strength,burst strength and tear strength of paper were also improved.The effect of twostage bleaching of Caragana Korshinskii APMP pulp was better than that of single-stage bleaching under the condition of a certain amount of H_2O_2。The whiteness of pulp after two-stage bleaching of H_2O_2-Na_2S_2O_4 was higher than that of singlestage H_2O_2 bleaching,but the bonding strength of pulp was lower than that of single-stage H_2O_2 bleaching.Caragana Korshinskii APMP pulp could be bleached with single-stage and two-stage H_2O_2.The effect of two-stage H_2O_2 is better than that of single-stage H_2O_2.
The paper aims to study the bleaching characteristics of caragana korshinskii APMP pulp with single-stage two-stage H_2O_2 and two-stage H_2O_2-Na_2S_2O_4.The bleaching characteristics of Caragana Korshinskii APMP pulp and the effects of the dosage of H_2O_2,reaction temperature and time in single H_2O_2 bleaching and the dosage of H_2O_2 and Na_2S_2O_4 in two-stage bleaching on the brightness and physical properties of bleached pulp were investigated.The optimum condition of single-stage H_2O_2 bleaching was as follows:the dosage of H_2O_2 was 5.0%,the bleaching temperature was 80℃,and the bleaching time was 90 min.Under these conditions,the whiteness of pulp increased from 47.71%to 64.87%,whiteness increased by 36%and the tensile strength,burst strength and tear strength of paper were also improved.The effect of twostage bleaching of Caragana Korshinskii APMP pulp was better than that of single-stage bleaching under the condition of a certain amount of H_2O_2。The whiteness of pulp after two-stage bleaching of H_2O_2-Na_2S_2O_4 was higher than that of singlestage H_2O_2 bleaching,but the bonding strength of pulp was lower than that of single-stage H_2O_2 bleaching.Caragana Korshinskii APMP pulp could be bleached with single-stage and two-stage H_2O_2.The effect of two-stage H_2O_2 is better than that of single-stage H_2O_2.
引文
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[15]赵强.杨木化机浆强化过氧化氢漂白工艺及机理研究[D].北京:北京林业大学,2009.ZHAO Qiang.Research on Reinforced Hydrogen Peroxide Bleaching of Poplar CMP and Bleaching Mechanism[D].Beijing:Beijing Forestry University,2009.
[16]郑永文,马晓娟,陈礼辉,等.绿竹改良APMP制浆的研究[J].华东纸业,2010,41(1):16-20.ZHENG Yong-wen,MA Xiao-juan,CHEN Li-hui,et al.Study on Dendrocalamopsis Oldhami Improved Alkaline Peroxide Mechanical Pulping[J].East China Pulp and Paper Industry,2010,41(1):16-20.
[2]田兰凤,吕振华.全杆柠条强韧纸浆的生产工艺[J]纸和造纸,2002(3):25.TIAN Lan-feng,LYU Zhen-hua.Production Process of Caragana Pulp[J].Paper and Paper making,2002(3):25
[3]薛富.柠条制浆造纸的探讨[J].内蒙古林业,2002(6):15.XUE Fu.Discussion on Caragana Pulping and Papermaking[J].Journal of Inner Mongolia Forestry2002(6):15.
[4]吴旭东,宋乃平,潘军.不同沙地生境下柠条灌丛化对草地土壤有机碳含量及分布的影响[J].农业工程学报,2016,32(10):115-121.WU Xu-dong,SONG Nai-ping,PAN Jun.Effect of Shrub(Caragana Intermedia)Encroachment under Different Sandy Habitats on Content and Distribution of Soil Organic Carbon in Desert Grassland[J]Transactions of the Chinese Society of Agricultural Engineering,2016,32(10):115-121.
[5]刘正光,张静.柠条燃烧特性及燃烧动力学研究[J].太阳能学报,2017,38(9):2611-2618.LIU Zheng-guang,ZHANG Jing.Study on the Combustion Characteristics and Kinetics of Caragana Korshinskii Kom[J].ACTA Energiae Solariss Sinica,2017,38(9):2611-2618.
[6]高玉寒,姚云峰,郭月峰,等.柠条锦鸡儿细根表面积密度对土壤水分空间分布的响应[J].农业工程学院,2017,33(5):136-142.GAO Yu-han,YAO Yun-feng,GUO Yue-feng,et al Response of Caragana Microphylla Fine Root Surface Area Density to Spatial Distribution of Soil Moisture[J].Transactions of the Chinese Society of Agricultural Engineering,2017,33(5):136-142.
[7]赵文昊,姚云峰,郭月峰.柠条锦鸡儿细根生长与游离脯氨酸含量关系研究[J].四川大学学报(自然科学版),2018,55(5):1121-1126.ZHAO Wen-hao,YAO Yun-feng,GUO Yue-feng.Relationship between Shape of Caragana's Root and Free Proline[J].Journal of Sichuan University(Natural Sience Edition),2018,55(5):1121-1126.
[8]许凤,孙润仓,詹怀宇.防沙治沙灌木生物资源的综合利用[J].造纸科学与技术,2004,23(1):17-20.XU Feng,SUN Run-cang ZHAN Huai-yu.Comprehensive Utilization of Shrubs for Preventing and Controlling Desertification[J].Paper Science&Technology2004,23(1):17-20.
[9]许凤,孙润仓,詹怀宇,等.几种灌木的碱性过氧化氢法制浆性能[J].中国造纸,2005,24(5):1-3.XU Feng,SUN Run-cang,ZHAN Huai-yu,et al.Three Shrub Pulps Prepared by Hydrogen Peroxide-alkaline Pulping[J].China Pulp&Paper,2005,24(5):1-3.
[10]罗黎敏,陈洪伟,姚春丽.柠条制浆性能的初步探讨[J].中华纸业,2004,25(8):39-40.LUO Li-min,CHEN Hong-wei,YAO Chun-li.Preliminary Study on Pulping Performance of Caragana[J].China Pulp&Paper Industry,2004,25(8):39-40.
[11]陈洪伟.沙棘、柠条、红柳制浆性能的研究[D].北京:北京林业大学,2004.CHEN Hong-wei.A Study on the Pulping Properties of Hippophaerhamnoidesl,Caragana Korshinskii and Red Willow[D].Beijing:Beijing Forestry University,2004.
[12]董存军,乐喜,王鹏.CTMP过氧化氢漂白研究进展[J].轻工科技,2016(10):21-23.DONG Cun-jun,LE Xi,WANG Peng.Recent Developments of Hydrogen Peroxide Bleaching of CTMP[J].Light Industry Science and Technology,2016(10):21-23.
[13]翟睿,胡志军,张学金,等.碱脲体系对蔗渣盘磨机械浆漂白性能的影响研究[J].中华纸业,2017,38(18):29-34.ZHAI Rui,HU Zhi-jun,ZHANG Xue-jin,et al.The Effect on Bleaching Property of Bagasse RMP with the Treatment of Alkali-urea System[J].China Pulp&Paper Industry,2017,38(18):29-34.
[14]范文.TMP连二亚硫酸钠漂白实践[J].中华纸业,2005,26(12):45-47.FAN Wen.The Practice of TMP Sodium Hyposulphite Bleaching[J].China Pulp&Paper Industry,2005,26(12):45-47.
[15]赵强.杨木化机浆强化过氧化氢漂白工艺及机理研究[D].北京:北京林业大学,2009.ZHAO Qiang.Research on Reinforced Hydrogen Peroxide Bleaching of Poplar CMP and Bleaching Mechanism[D].Beijing:Beijing Forestry University,2009.
[16]郑永文,马晓娟,陈礼辉,等.绿竹改良APMP制浆的研究[J].华东纸业,2010,41(1):16-20.ZHENG Yong-wen,MA Xiao-juan,CHEN Li-hui,et al.Study on Dendrocalamopsis Oldhami Improved Alkaline Peroxide Mechanical Pulping[J].East China Pulp and Paper Industry,2010,41(1):16-20.