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机械精浆处理对竹材化学热磨机械浆性能的影响研究
Study on the Effects of Mechanical Refining on the Properties of Bamboo CTMP
收稿日期：2024-10-31  
DOI：10.11980/j.issn.0254-508X.2025.04.012
关键词:  竹材化学热磨机械浆  精浆  纤维形态  湿部化学  纸张强度
Key Words:bamboo chemithermomechanical pulp  refining  fiber morphology  wet-end chemistry  paper strength
基金项目:国家重点研发计划项目“竹材化机浆高强包装纸板、纸袋纸配抄技术”（2023YFD2201902-3）；宜宾市揭榜挂帅科技项目“竹基浆精深加工技术研究与开发”（2022JB009）。
作者单位邮编
姚文轩* 福建农林大学材料工程学院，福建福州，350002 350002
黄方 福建农林大学材料工程学院，福建福州，350002 350002
房桂干 中国林业科学研究院林产化学 工业研究所，江苏南京，210042 210042
谢章红 宜宾纸业股份有限公司，四川宜宾，644100
四川省竹子制浆造纸工程技术研究中心，四川宜宾，644100 		644100
黄六莲* 福建农林大学材料工程学院，福建福州，350002 350002
苗庆显* 福建农林大学材料工程学院，福建福州，350002 350002
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摘要:以竹材化学热磨机械浆（CTMP）为原料，利用PFI磨浆机对其进行机械精浆处理，探讨了精浆处理对纸浆纤维形态、湿部化学特性及其纸张性能的影响。结果表明，机械精浆处理降低了纤维的平均长度，提高了细小纤维含量及其留着率，纸浆的溶解电荷量增加，但是纸浆的滤水性、Zeta电位和酸性基团含量下降；同时，精浆处理改善了纸张的抗张指数、耐破指数以及初始湿抗张指数。当纸浆打浆度由15 °‍SR提高到40 °‍SR时，纤维质均长度从0.788 mm下降到0.459 mm，细小纤维含量从6.30%提高到7.30%，细小纤维留着率从93.5%提高到96.0%，纸浆的溶解电荷量从1.325 μeq/g增加到2.010 μeq/g，但其Zeta电位绝对值从75.4 mV下降至53.2 mV，降低了29.4%，纸张抗张指数从6.55 N·m/g增加到9.81 N·m/g，初始湿抗张指数从0.271 N·m/g提高至0.290 N·m/g，分别提高了49.8%和7.0%。
Abstract:The effects of mechanical refining of bamboo chemithermomechanical pulp （CTMP） by PFI refiner on fiber morphology， wet-end chemistry and paper properties were discussed. The results showed that the mechanical refining decreased the mean length-weighted of fiber， increased the content of fines and its retention， increased the dissolved charge of pulp， but decreased the drainability， Zeta potential and acid groups content of pulp. Meanwhile， the tensile index， bursting index and initial wet tensile index of the paper were improved due to the refining treatment. When the beating degree of pulp increased from 15 °SR to 40 °SR， the mean length-weighted of fiber was decreased from 0.788 mm to 0.459 mm， the content of fines was increased from 6.30% to 7.30%， the retention rate of fines was increased from 93.5% to 96.0%， the dissolved charge of the pulp was increased from 1.325 μeq/g to 2.010 μeq/g. However， the Zeta potential decreased from an absolute value of 75.4 mV to 53.2 mV， decreased by 29.4%. The tensile index of the paper was increased from 6.55 N·m/g to 9.81 N·m/g， and the initial wet tensile index was increased from 0.271 N·m/g to 0.290 N·m/g， with relative increases of 49.8% and 7.0%， respectively.
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