制备绒毛浆的复合绒毛化处理工艺研究

A New Fluff Pulp Preparation Technology

关键词:  绒毛浆  耐破指数  吸收性  干蓬松度

Key Words:fluff pulp  burst index  absorption  dry bulkiness

摘要:以马尾松硫酸盐浆为原料，研究了复合绒毛化处理工艺中用碱量、H2O2用量、温度、浓碱处理时间对绒毛浆板及绒毛浆性能的影响。结果表明，复合绒毛化处理工艺的最佳条件为NaOH用量8%，H2O2用量1.8%，温度70℃，浓碱处理时间10 min。在此工艺条件下，马尾松硫酸盐浆经过复合绒毛化处理后，绒毛浆白度为76.1%，提高了25.9个百分点；绒毛浆板耐破指数为0.57 kPa·m2/g，下降了48.2%；紧度下降了11.8%；绒毛浆吸收时间为8.30 s，减少了47.5%；吸收性为9.14 g/g，干蓬松度为17.4 cm3/g，分别降低了8.32%、5.43%。复合绒毛化处理后，对绒毛浆进行一段补充漂白，白度可达到82.4%，绒毛浆各项性能均符合GB/T 21331—2008的要求。

Abstract:Using pinus massoniana kraft pulp as raw material,the effects of fluff pulp preparation technology including alkali (NaOH) dosage, hydrogen peroxide(H2O2) dosage, temperature and concentrated alkaline treatment time on the fluff pulp properties were investigated. It showed that the optimal technology was as the follows: NaOH dosage 8%, H2O2 dosage 1.8%, temperature 70℃, concentrated alkaline treatment time 10 min. The brightness of the pulp was 76.1% ISO and increased 51.6% compared with the original kraft pulp, burst index was 0.57 kPa·m2/g and decreased 48.2%, density and the absorption time decreased 11.8%, 47.5%, respectively. Meanwhile, absorption and dry bulkiness of the pulp decreased 8.32%, 5.43%, respectively. The brightness of the pulp reached 82.4% ISO when it was further bleached with H2O2, while other properties of the pulp met to the requirement of the national standard GB/T 21331—2008.