漂白硫酸盐竹浆的打浆特性

Refining Properties of Kraft Bamboo Pulp

针对竹浆难打浆的特点,本实验系统研究了漂白硫酸盐竹浆及其长纤维(200目以上纤维)的打浆性能,并与漂白阔叶木化学浆打浆性能进行对比。研究发现,竹浆纤维组分中16目以上纤维含量约为24%,而阔叶木浆仅为0.8%;竹浆200目以下纤维含量约为28%,而阔叶木浆为7%。相同磨浆转数下,竹浆打浆度略高于阔叶木浆,竹浆长纤维浆打浆度较阔叶木浆长纤维低,竹浆和竹浆长纤维均比阔叶木浆和阔叶木浆长纤维的湿重高。相同打浆度下,竹浆成纸撕裂指数、耐破指数和耐折度均高于阔叶木浆;竹浆长纤维成纸的抗张指数、撕裂指数、耐破指数和耐折度均高于阔叶木浆长纤维。这些都说明利用竹浆能够抄造出质量较高的纸张。

Aiming at the difficulty of bamboo beating situation, this paper mainly focused on the refining properties of kraft bamboo pulp and it long fibers （over 200 mesh） compared with the kraft hardwood pulp by PFI beater. The results showed that the percentage of fibers over 16 mesh of bamboo pulp was about 24% compared to the 0.8% of hardwood pulp; the percentage of fibers below 200 mesh of bamboo pulp was about 28% compared to the 7% of hardwood pulp. The beating degree and wet weight of bamboo pulp were both higher than hardwood pulp in the same revolution of PFI beater. The beating degree of bamboo long fibers pulp was lower than the hardwood long fibers pulp. The tear index, burst index and folding number of bamboo pulp are all higher than the hardwood pulp in the same beating degree. ＂Ihe tensile index, tear index, burst index and folding number of bamboo long fibers pulp are all higher than hardwood pulp in the same beating degree. All of these showed that bamboo pulp can be used to produce high quality paper.