以过硫酸铵(APS)为引发剂,马来酸酐(MAH)、自制N-聚乙二醇单甲醚-N'-氨基甲酰马来酰亚胺(MPNCM)和甲基丙烯磺酸钠(SMAS)为聚合单体,合成N-聚乙二醇单甲醚-N'-氨基甲酰马来酰亚胺-甲基丙烯磺酸钠-马来酸酐共聚物(SP).通过FI-IR和1H-NMR谱图对SP结构进行表征.以净浆流动度为指标,考察了投料方式、引发剂用量、反应温度、MAH/SMAS摩尔比和MPNCM/SMAS摩尔比对净浆流动度的影响.实验结果表明:最佳反应条件为MPNCM/SMAS摩尔比为1.2,MAH/SMAS摩尔比5.0,并将0.15wt％ APS和MPNCM、SMAS缓慢滴加到的MAH水溶液,控制反应温度为60℃.以最佳反应条件制备的SP具有较好的工作性能和分散效果,掺量为0.2wt％时,减水率达26.6％,净浆流动度达288 mm.
参考文献
| [1] | 逄建军,王栋民,张力冉,刘治华,王浩.含三乙醇胺侧基聚羧酸减水剂的制备与性能[J].硅酸盐通报,2013(10):2103-2107. |
| [2] | Ye YS;Huang HL;Hsu KC .A water-soluble acrylate/sulfonate copolymer. I. Its synthesis and dispersing ability on cement[J].Journal of Applied Polymer Science,2006(3):2490-2496. |
| [3] | MA Xiuxing.Synthesis of New Polyether Polycarboxylate Superplasticizer[J].武汉理工大学学报（材料科学版）（英文版）,2010(05):799-802. |
| [4] | Lu, SH;Liu, G;Ma, YF;Li, F .Synthesis and Application of a New Vinyl Copolymer Superplasticizer[J].Journal of Applied Polymer Science,2010(1):273-280. |
| [5] | Weng, W.-H.;Hsu, K.-C.;Sheen, Y.-N. .A water-soluble amphoteric copolymer: Synthesis and its dispersion properties on cement particles[J].Journal of Applied Polymer Science,2010(3):1313-1319. |
| [6] | Johann Plank;Dai Zhimin;Helena Keller .Fundamental mechanisms for polycarboxylate intercalation into C_3A hydrate phases and the role of sulfate present in cement[J].Cement and Concrete Research,2010(1):45-57. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%