摘要
研究打浆对BCTMP细小纤维的影响,打浆度从20°SR上升到50°SR,杨木BCTMP的细小纤维含量由18.3%增加到35.4%。随着打浆度的提高,浆中长度大于0.6mm的纤维含量不断减少,长度小于0.075mm的细小纤维含量不断增加,当打浆度为30°SR时,浆中长纤维与细小纤维含量几乎相等。对BCTMP细小纤维组分进行筛分,分析细小纤维对成纸性能的影响,随着细小纤维含量增加,成纸的松厚度稍有降低,而纸张的抗张强度、耐破度及挺度均增加。其中,纸张抗张强度和耐破度变化较为明显,而成纸的松厚度和挺度变化较为平缓。
The effect of refining on fines in BCTMP was studied. When the beating degree of pulp was increased from 20°SR to 50°SR, the fines content in aspen BCTMP increased from 18.3% to 35.4%; and the content of fibres with length beyond 0.6mm decreased with the beating degree increasing, and that of fibres under 0.075mm in length kept on increasing. It contains nearly the same amount of long fibres and fines in the pulp of 30°SR. Screened process was conducted on the BCTMP fines, and the effect of fines added in paper properties were investigated. When the fines proportion in the pulp increased, the bulk of paper decreased slightly, the stiffness increased a little, while the tensile and the burst strength considerably increased.
出处
《纸和造纸》
北大核心
2010年第3期32-34,共3页
Paper and Paper Making
基金
国家"十一五"科技支撑项目--林纸一体化工程技术研究与示范(2006BAD32B05-2)
