木质素改性氨基系高效减水剂性能研究  

Properties of lignin modified amino-based superplasticizer

作　　者：罗振扬[1,2] 陈杰[1] 何明[1] 吴达会[1] 季栋[1] 史以俊[1] 

机构地区：[1]南京林业大学理学院,江苏南京210037 [2]江苏省生物质能源与材料重点实验室,江苏南京210042

出　　处：《新型建筑材料》2011年第1期5-8,18,共5页New Building Materials

基　　金：国家自然科学基金项目(50903043);江苏省生物质能源与材料重点实验室重点项目(201001)

摘　　要：研究了木质素磺酸盐共聚改性氨基系高效减水剂,合成了不同木质素含量的氨基系减水剂。采用红外光谱表征了改性产物,并对不同木质素含量氨基系减水剂进行ζ电位、净浆流动度、胶砂流动度、泌水率测试,综合分析得出,木质素磺酸盐含量为30%时,可以获得最优性价比的改性产物。This paper studies the copolymerization of amino lignosulfonate superplasticizer with different content of lignin. All modification products are represented with infrared spectra and properties such as ζ potential,cement paste fluidity,mortar fluidity, and bleeding rate of amino-based superplastieizer containing various levels of lignin are studied. It is concluded that modified products have the optimal cost performance when the content of lignosulfonate is 30%.

关 键 词：木质素 对氨基苯磺酸钠 减水剂 Ζ电位 流动度 

分 类 号：TU528.042[建筑科学—建筑技术科学]