大麻木质芯秆碱-H_2O_2机械浆的研究

Study on Alkaline-H_2O_2 Mechanical Pulp of Hemp's Woody-Core

对大麻木质芯秆的APMP制浆进行了研究。结果表明 ,药液热浸渍的适宜条件是 :NaOH用量 6 0 % ,H2 O2 用量 3 0 % ,EDTA用量 0 0 5 % ,MgSO4用量 0 0 5 % ,Na2 SiO3 用量 2 0 % ,热浸渍的处理浓度 2 5 % ,70℃下处理 50min。在此条件下做一段药液热浸渍 ,然后经过两段磨盘间隙为 0 0 2的盘磨磨浆 ,所得大麻木质芯秆APMP的特性为 :得率 79 0 % ,打浆度 66°SR ,抗张指数 35 0Nm/g ,白度 61 8%ISO ,撕裂指数 3 75mNm2 /g,耐破度 0 0 8MPa。

APMP from hemp, s woody-core was studied. The results showed that under the moderate chemicals impregnation conditions of NaOH 6.0%, H2O2 3.0%, EDTA 0.05%, MgS04 0.05%, Na2SiO3 2.0%, pulp consistence 25%, temperature 70°C and retention time 50min, and 2 stages refining with 0.02 mm disc clearance, the properties of resultant pulp such as yield 79.0%, tensile index 35.0 N&middotm/g, brightness 61.8%ISO, tear index 3.75 mN&bullm2, burst strength 0.08 MPa can be produced.