摘要
四倍体刺槐作为一种新的速生树种，是造纸工业潜在的纤维资源。本文对四倍体幼龄刺槐（2—4年）进行了材性分析，采用SFP—AQ（碱性亚硫酸钠甲醛-葸醌法）制浆，通过正交试验，确定其较优的蒸煮工艺条件：四倍体刺槐两年生用碱量（以Na20计）18％-20％，亚硫酸化度35％～45％，一次升温时间110—130min，二次升温时间50—60min；四倍体刺槐四年生用碱量（以Na20计）19％～22％，亚硫酸化度45％～50％，一次升温时间：110—130min，二次升温时间：40—50min。最高蒸煮温度为160—165℃，液比1：5．5。Na2CO3用量2．3％，AQ用量0．05％，甲醛用量2．5％。两年生四倍体刺槐在49．0°SR附近，纸浆各项物理性能指标较好，抗张指数74．6N．m／g，撕裂指数17．07mN·m^2／g，耐折度290次，紧度0．48g／cm^3。四年生四倍体刺槐在41．5°SR附近，纸浆具有较好的物理性能，抗张指数70．9N·m／g，撕裂指数19．55mN·m^2／g，耐折度270次，紧度0．49g／cm^3。总的来说，四倍体刺槐比较适合SPF—AQ法制浆。
Quadruple black locust is a kind of fast-growing wood. It is a potential fiber resource in paper industry. In the paper, fiber morphology of quadruple black locust （2 years and 4 years） was analyzed. SFP-AQ process was adopted. The orthogonal results showed that the preferable cooking conditions were： quadruple black locust （2 years） ： dosage of alkali （ based on Na2 O） 18 % - 20 % , degree of sulphonation 35 % - 45 % , first up - time 110 - 130min, second up-time 50-60min; quadruple black locust （4 years）： dosage of alkali （based on Na20） 19% -22% , degree of sulphonation 45% -50% , first up-time 110 - 130min, second up-time 40 -50min. Maximum temperaturel60 - 165℃ , liquor to wood ratio 5.5, dosage of Na2CO3 2.3% , dosage of AQ 0.05% , dosage of formaldehyde 2.5%. Around 49.0°SR, quadruple black locust （2 years） pulp can achieve good paper properties, tensile index is 74.6N. m/g, tear index is 17.07mN. m^2/g, folding endurance is 290 times ,density is 0.48g/cm^3, while quadruple black locust （4 years） pulp can achieve good paper properties, around 41.5°SR, tensile index is 70.9N. m/g, tear index is 19.55mN. m^2/g, folding endurance is 270 times ,density is 0.49g/cm^3. Generally speaking, they are both suitable for SPF- AQ process.
出处
《造纸科学与技术》
2007年第1期5-8,4,共5页
Paper Science & Technology
作者简介
姚春丽，女，副教授，主要从事制浆造纸工程方向的研究。
