纤维细胞充填技术在机械浆中的应用

Application of fiber loading technology in mechanical pulp

分析了浆浓、转速、CO2气体压力、反应时间对机械浆纤维细胞充填效果的影响。比较了漂白化学热磨机械浆(BCTMP)和杨木碱性过氧化氢机械浆(APMP)的纤维细胞充填效果。结果表明:转速是影响机械浆纤维细胞充填效果的关键因素。纤维细胞充填技术应用于机械浆是可行的,与直接加填相比,当BCTMP成纸内聚力提高17.86%、裂断长提高42.86%、耐破度提高42%时,灰分同时提高2.05%;当APMP成纸内聚力分别提高21.31%、6.56%和1.64%,裂断长分别提高69.18%、77.40%和75.34%,耐破度分别提高18.18%、22.73%和25%时,灰分分别提高9.62%、10.58%和1.68%。APMP的纤维细胞充填效果较BCTMP的效果更好。

Fiber loading technology can be used to improve both fiber bond and paper ash content. The effects of pulp concentration, rotating speed, CO2 pressure and reaction time on the fiber loading mechanical pulp were studied in this paper. The L4 experiment was designed to test effect. The results showed that the rotating speed was the key factor; and fiber loading method was feasible for mechanical pulp. The Scott, breaking length and bursting strength of fiber loaded handsheet using BCTMP were improved by 17.86% , 42.86% and 42% respectively of it was compared with direct loading. The ash content of that handsheet was improved by 2.05% . On the other hand, the Scott of fiber loaded handsheet using APMP were improved by 21.31% , 6.56% and 1.64% respectively, the breaking length of that handsheet were improved by 69.18% ,77.40% and 75.34% respectively. The bursting strength of that handsheet were improved by 18.18% , 22.73% and 25% respectively, while the ash content of that handsheet were improved by 9. 62% , 10.58% and 1.68% respectively. The effect of fiber loaded APMP was better than that of BCTMP.