碱木素磺化改性制备减水剂及其性能的研究  

Preparation of Water-Reducing Agent by Sulphonation Modification of Alkali Lignin and Its Performance Research

作　　者：郑雪琴 黄建辉[2] 刘明华[2] 洪树楠[2] 詹怀宇[3] 

机构地区：[1]福建省交通职业技术学院,福州250007 [2]福州大学环境与资源学院,福州350002 [3]华南理工大学制浆造纸工程国家重点实验室,广州510640

出　　处：《造纸科学与技术》2004年第5期29-32,共4页Paper Science & Technology

基　　金：教育部博士点专项基金 (2 0 0 2 173);福建省青年科技人才创新基金 (2 0 0 2J0 0 2 );福州大学科技发展基金(2 0 0 3-XQ - 2 8)资助项目

摘　　要：使用多羟基磺化剂对碱木素进行改性 ,制备木素磺酸钠水泥减水剂 ,通过对改性工艺的优化 ,确定最佳的工艺条件为 :将含固量 4 0 %的含木质素黑液 ,调节 pH值到 12 ,升高温度到 6 0℃ ,加入黑液质量分数为 1%的浓度为 30 %的过氧化氢 ,反应 2 0min ,升温到 12 0℃ ,加入黑液质量分数 9%的多羟基磺化剂 ,磺化 3h。The water-reducing agent of sodium lignosulphonate was prepared by sulphonation modification of alkali lignin with multi-hydroxyl sulphonating agent. And, the optimization tests were conducted regarding the preparation procedures. The resultant sodium lignosulphonate was prepared by two steps. Step 1, the black liquor with 40% of solid content was oxidized with 30% of H 2O 2 for 20 min under the conditions of 12 of pH value and 60 ℃ of reaction temperature. Step 2, the sodium lignosulphonate was prepared by sulphonation of the oxidized product for 3 h under the reaction temperature of 120 ℃ with the sulphonating agent. The performances of the modified product were similar to the market products of calcium lignosulphonate.

关 键 词：磺化剂 改性 水泥减水剂 制备 含固量 质量分数 羟基 碱木素 黑液 工艺条件 

分 类 号：TS79[轻工技术与工程—制浆造纸工程] TS727