摘要
以杨木BCTMP浆为原料,探讨低浓磨浆对化机浆纤维特性及成纸性能的影响。通过浆料筛分分析和纤维质量分析表明,随着磨浆程度的增加,浆中长纤维组分含量下降,细小纤维含量增加,纤维粗度和纤维平均长度减小,纤维卷曲、扭结程度降低,使纤维得到舒展,改善成纸性能。随着磨浆的进行,打浆度上升,成纸的松厚度下降,抗张强度及耐破度等强度性能逐步升高。当打浆度为35°SR时,重均长度和纤维粗度分别减小2.1%和5.1%,纤维卷曲和扭结指数分别降低8.0%和5.0%,利于纤维舒展;与磨浆前浆料相比,成纸松厚度下降10%,挺度、抗张指数和耐破指数分别提高20%、65.3%、23.2%,磨浆对纸张物理强度性能变化具有不同程度的影响,可以利用磨浆控制浆料中细小纤维含量来调整纸张的松厚度及强度。
The fiber characteristics and paper properties were investigated during low consistency refining of aspen BCTMP Pulp.The results showed that by the method of fiber characteristics analysis and fiber classification,increasing the beating degree could reduce the long fiber fraction and increase fines fraction.At the same time,the average fiber length and fiber coarseness descended gradually.The curl and kink index decreased,which were helpful to fiber extending and improve the paper properties.During the refining process,the beating degree increased and paper bulk decreased while the tensile and burst strength were improved gradually.At 35°SR,the weighted length and fiber coarseness descended respectively by 2.1% and 5.1% and fiber curl and kink index decreased by 8.0% and 5.0% respectively.Compared to the pre-refining pulp,paper bulk decreased by 10% while the stiffness,tensile index and burst index respectively increased by 20%,65.3% and 23.2%,which indicated that paper physical properties were changed by refining with different amplitude influence.
出处
《纸和造纸》
北大核心
2010年第8期25-27,共3页
Paper and Paper Making
基金
国家科技支撑项目"速生材高得率浆在高档纸板中的应用技术"(2006BAD32B05-2)
关键词
磨浆
纤维特性
强度性能
细小纤维
refining
fiber characteristics
strength properties
FQA
