含多种侧链官能团共聚羧酸与萘磺酸甲醛缩合物复合高效减水剂的制备与性能  

Preparation of superplasticizer by copolycarboxylate with various functional groups composites with naphthyl sulfonate formaldehyde condensate and its property

作　　者：付东康[1] 吴绍祖 何霄嘉[1] 倪晋仁[1] 

机构地区：[1]北京大学环境工程系,北京100871 [2]北京盖雅技术中心有限公司,北京100871

出　　处：《混凝土》2007年第9期57-59,共3页Concrete

摘　　要：采用分子设计方法合成了含多种侧链官能团共聚羧酸(CoPoCa-300)外加剂,与萘磺酸甲醛缩合物复配得到一系列新的复合型高效减水剂CoPoCa-NSF系列。复合型高效减水剂降低了萘系减水剂用量,并且产生超叠加效应使复合减水剂具有较高的减水率(24%～28%)和良好的坍落度保持性,可显著提高混凝土的强度40%～50%。Based on principles of molecular design, copolycarboxylate additive（CoPoCa-300） was synthesized with various functional groups, which then composited with naphthyl sulfonate formaldehyde condensate to get compounded superplasticizers （CoPoCa-NSF）.By this type of compounded superplasticizer,the naphthaline dosage can be reduced,higher water reducing ratio （24%-28%） and better slump constant can be achieved for the synergistic effects, and the strength of the concrete can be notably increased by 40%-50%.

关 键 词：共聚羧酸 萘系 高效减水剂 减水率 坍落度保持性 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]