不同性能麻竹浆制备空气滤纸的研究

Study on the Preparation of Air Filter Paper from Hemp Bamboo Pulp of Different Properties

关键词:  竹龄  竹浆  滤纸  过滤性能

Key Words:bamboo age  bamboo pulp  filter paper  filtration performance

摘要:本研究以不同竹龄的麻竹为原料，通过硫酸盐法蒸煮成浆，探讨了竹龄对竹浆纤维形态、竹浆纸物理性能及过滤性能的影响。结果表明，随着竹龄的增加，竹浆纤维的长度、宽度及长宽比等均有不同程度的增加。竹浆纸物理性能随着竹龄的增加呈现不同的变化规律，其中松厚度、孔径及透气度均随竹龄的增加呈逐渐增加的趋势，当竹龄为36月时，竹浆纸松厚度为5.35 cm³/g，平均孔径为29.1 μm，透气度为774 mm/s；竹浆纸挺度随竹龄的增加呈不断下降的趋势，6月竹浆纸挺度达289 mN，约为36月竹浆纸的2倍。竹浆纸的过滤性能品质因子随竹龄的增加呈不断增加的趋势，竹龄36月竹浆纸品质因子可达4.96，优于闪急干燥阔叶浆纸，与闪急干燥针叶浆纸相近。

Abstract:In this study， different bamboo ages of hemp bamboo pulp were used as raw materials， and the effects of bamboo age on fiber morphology of bamboo pulp， physical properties and filtration properties of bamboo pulp paper were discussed by kraft pulping. The results showed that with the increase of bamboo age， the length， width and aspect ratio of bamboo pulp fibers increased to different degrees. The physical properties of bamboo pulp paper showed different patterns of change with the increase of bamboo age， in which the pine thickness， pore size， and air permeability showed a trend of gradual increase with the increase of bamboo age. When the bamboo age was 36 months， the thickness， average pore size， and permeability bamboo pulp paper were 5.35 cm³/g，29.1 μm， and of 774 mm/s， respectively. And the stiffness of the bamboo pulp paper showed a dedining trend with the increase of bamboo age was a declining trend， the stiffness of the bamboo pulp paper of 6 months reached 289 mN， which was about twice as much as that of 36-month bamboo pulp paper. The filtration performance quality factor of bamboo pulp paper showed an increasing trend with the increase of bamboo age， and the quality factor of bamboo pulp paper was up to 4.96 at the age of 36 months， which was better than that of the flash drying hardwood pulp paper and similar to that of the flash drying softwood pulp paper.