摘要
以聚乙二醇甲基醚(MPEG)、甲基丙烯酸(MAA)、烯丙基磺酸钠(SAS)和过硫酸铵(APS)等单体为原料合成一种聚羧酸高效减水剂,研究了引发剂、链转移剂、单体等因素对水泥净浆流动度的影响,分析了不同减水剂溶液浓度与表面张力的相互关系;研究表明当引发剂用量为单体质量的5%,链转移剂为0.3%,SAS为15%,MAA/MPEG物质的量比为8时,减水剂对水泥的分散性和保塑性较好,对不同水泥具有良好的适应性。
Polycarboxylic superplasticizer was synthesized by monomers including MPEG,MAA,SAS,and APS.The effects of initiator,sulphonate,chain transfer agent and monomers on the fluidity of cement paste were discussed.The relationship between concentration of superplasticizer solution and surface tension was studied.The result indicated that the copolymer superplasticizer had high dispersiveness,disperser retentivity and good adaptability with different cements,when the initiator amount was 5% of monomer weight,chain transfer agent 0.3%,SAS was 15%,MAA/MPEG molar ration was 8.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2012年第1期42-45,共4页
Bulletin of the Chinese Ceramic Society
基金
辽宁省教育厅资助项目(2009S085)
关键词
聚羧酸减水剂
净浆流动度
表面张力
polycarboxylic superplasticizer cement paste fluidity surface tension
