研究了蒸煮和洗涤过程中使用添加剂(分散剂、表面活性剂、松香和塔罗油松香)及去除细小纤维对马占相思浆的脱脂作用。用70℃热水在浆浓10%的条件下进行四段洗涤,每段分散5min。为了评估低浆浓下树脂的分散情况和添加剂的作用,选择添加剂在10g/kg绝干浆的用量与浆浓2%下与未洗涤浆反应5min。离心分离滤液,然后用抽提和气相色谱法分析其树脂含量。实验结果表明,只在蒸煮中使用添加剂,长链脂肪酸(LCFA)平均去除率为25%;只在洗涤中使用添加剂,LCFA平均去除率为9%;在蒸煮、洗涤中都使用添加剂,LCFA平均去除率为33%。实验还发现,去除主要脂肪醇(C28OH)较为困难,其去除率不超过13%;在较低浆浓(2%)下,添加剂能更有效地分散树脂组分;较短的筛选时间(1h)可使树脂成分大大减少,而延长筛选时间(4h)仅使树脂去除率稍有改进。 The degreasing effect of Acacia mangium pulp was studied by using additives (dispersant, surfactant, rosin and taro oil rosin) and fine fiber removal during cooking and washing. With 70 ℃ hot water in the slurry concentration of 10% for four sections of washing, each section for 5min. In order to evaluate the dispersion of the resin under low concentration and the effect of the additive, the additive was selected to react with the unwashed pulp at a dosage of 10 g / kg dry pulp and 2% pulp consistency for 5 min. The filtrate is centrifuged and analyzed for resin content by extraction and gas chromatography. The results showed that the average removal rate of long chain fatty acids (LCFA) was only 25% when additives were used in cooking. The average removal rate of LCFA was only 9% when additives were used only in washing. The additives were used in cooking and washing. The average LCFA The removal rate is 33%. Experiments also found that removal of the major fatty alcohol (C28OH) was more difficult with a removal rate of no more than 13%; at lower slurry concentrations (2%), the additive dispersed the resin component more efficiently; the shorter screening time ) Can greatly reduce the resin composition, and extend the screening time (4h) only slightly improve the resin removal rate.