一种具有抗离析功能大单体DK50的合成及应用  

Synthesis and application of a macromer DK50 with anti-segregation function

作　　者：赵鑫 徐仕睿 李鹏 刘威 Zhao Xin;Xu Shirui;Li Peng;Liu Wei(Shanghai Dongda Chemical Co.,Ltd.,Jinshan 201512,China;Fushun Dongke Fine Chemical Co.,Ltd.,Fushun 113123,China)

机构地区：[1]上海东大化学有限公司,上海金山201512 [2]抚顺东科精细化工有限公司,辽宁抚顺113123

出　　处：《化学推进剂与高分子材料》2020年第1期65-67,共3页Chemical Propellants & Polymeric Materials

摘　　要：抗离析功能性单体DK50是采用功能性起始剂、复合催化剂等经乙氧基化而制成,其相对分子质量为5 600。由DK50合成的聚羧酸混凝土高性能减水剂FDK50-47能保持新拌混凝土多相混合体系的悬浮稳定性,克服常规聚羧酸高性能减水剂在使用过程中容易造成混凝土泌水、板结或黏度大等弊端,保证新拌混凝土具有良好的工作性。The anti-segregation functional monomer DK50 was prepared by ethoxylation using the functional initiator and composite catalyst, etc., and its relative molecular mass is 5 600. The high performance polycarboxylate water reducer FDK50-47 for concrete synthesized from DK50 can maintain suspension stability of the multi-phase mixing system of the fresh concrete, and can overcome the easily caused disadvantages of the conventional high performance polycarboxylate water reducer in use such as bleeding, hardening, high viscosity and the like of the concrete, and can ensure that the fresh concrete has good workability.

关 键 词：聚羧酸减水剂 功能性起始剂 混凝土 环氧乙烷 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]