木质素磺酸钠接枝改性脂肪族高效减水剂的研究  

Study on preparation of grafted lignosulfonate sulfonated acetone formaldehyde superplasticizer

作　　者：陈国新[1,2] 杜志芹[1] 沈燕平[1] 杨立志[1] 徐唯唯[1] 祝烨然[1] 

机构地区：[1]南京水利科学研究院瑞迪高新技术公司,江苏南京210024 [2]东南大学材料科学与工程学院,江苏南京211189

出　　处：《新型建筑材料》2011年第8期44-46,53,共4页New Building Materials

摘　　要：针对脂肪族减水剂原材料价格上涨与纸浆废液的资源化利用,在传统脂肪族减水剂中引入草本木质素磺酸钠(木钠)进行接枝共聚,设计合成了木钠接枝改性脂肪族高效减水剂HLC-RS(M)。采用单因素法研究影响HLC-RS(M)分散性的主要参数,得出接枝共聚的最佳参数,并与传统脂肪族减水剂及脂肪族减水剂-木钠物理复配的性能进行比较表明,HLC-RS(M)的综合性能优于传统脂肪族减水剂。Aiming at the price rising of the raw materials for sulfonated acetone formaldehyde superplasticizer and recycling utilization of paper pulp liquor, a modified sulfonated acetone formaldehyde superplasticizer HLC-RS （M） was prepared by the grafting compolymerization of sulfonated acetone formaldehyde polycondensate with lignosulfonate. The best factors of grafting cornpolymerization were studied by single factor means. The effects of HLC-RS（M）, HLC-RS and mixing product of HLC-RS and lignosulfonate （RS-FZ） on concrete are compared experimentally. The results indicate that the properties of HLC-RS （M） are better than ordinary sulfonated acetone formaldehyde superplasticizer.

关 键 词：脂肪族减水剂 木质素磺酸钠 改性 合成 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]