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用超声波预处理速生杨碱性过氧化氢机械浆(APMP),通过分析检测处理前后纸浆纤维的表面形态、打浆度及成纸的物理强度性能,探讨超声波处理的时间和强度对速生杨高得率浆抄造性能的影响。实验结果表明,与未用超声波处理的纸浆相比,在超声波功率150W下处理90min,纸浆打浆度提高了5°SR,不透明度提高了3.1%,抗张指数提高了2.8N·m·g~(-1),撕裂指数提高了0.15m·N·m~2·g~(-1),白度几乎无影响。超声波预处理速生杨高得率浆,使得纸浆纤维表面和内部受到超声空化作用,纤维变得松散,细纤维化程度加深。
Ultrasonic pretreatment of poplar caustic alkaline hydroperoxide mechanical pulp (APMP), through the analysis of the surface morphology of pulp fibers before and after testing, beating degree and physical strength of the paper into the paper to explore the ultrasonic treatment time and strength of poplar Effect of rate pulp making performance. The experimental results show that the beating degree of pulp is increased by 5 ° SR, the opacity is increased by 3.1% and the tensile index is increased by 2.8 N · m · g ~ (-1) compared with that of the pulp without ultrasonic treatment at 150 W of ultrasonic power for 90 minutes. (-1), tear index increased by 0.15m · N · m ~ 2 · g -1, whiteness had almost no effect. Ultrasonic pretreatment of poplar Yang high rate of pulp, making pulp fiber surface and internal ultrasonic cavitation, the fiber becomes loose, deepening degree of fine fibrosis.