|
| 摘要: |
| 采用水溶液聚合法,将自制的酯化大单体聚乙二醇单甲醚甲基丙烯酸酯(MPEGMA)与甲基丙烯酸(MAA)、甲基丙烯酰基磺酸钠(SMAS)共聚合成聚羧酸系减水剂,探讨了反应浓度、加料方式、MAA与MPEGMA的摩尔比、SMAS与MPEGMA的摩尔比、引发剂用量(相对于所有单体质量和的百分比)、聚合温度和反应时间对所合成聚羧酸系减水荆性能的影响.结果表明:采用最佳工艺参数制备的聚羧酸系减水剂在掺量仅为0.15%(质量分数)时就具有良好的分散性和保塑性. |
| 关键词: 聚羧酸系减水剂 共聚 合成 性能 |
| DOI： |
| 分类号:TU528.042.2 |
| 基金项目:上海市青年科技启明星计划，上海市科学技术委员会专项基金重点项目，国家科技支撑计划? |
|
| Study of Synthesis of Polycarboxylate Based Superplasticizer |
|
SUN Zhen-ping ZHAO Lei
|
| Abstract: |
| The polycarboxylate based superplasticizer was synthesized by macromer MPEGMA(methoxy polyethylene glycol methacrylate),MAA(methyl acrylic acid) and SMAS(sodium methyl acryl sulfonate) in aqueous solution polymerization.The effects of reactant concentration;feeding mode;mole ratio of MAA to MPEGMA and SMAS to MPEGMA;dosage of initiator;polymerization temperature and reaction time on the performance of polycarboxylate based superplasticizer were investigated.The results show that the polycarboxylate based su... |
| Key words: polycarboxylate based superplasticizer copolymerization synthesis performance |
