早强型聚羧酸系高分子减水剂的合成与应用
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摘要
以聚乙二醇单甲醚衣康酸酯、聚乙二醇单甲醚甲基丙烯酸酯、N-[4-(磺酰胺)苯基]丙烯酰胺为聚合单体,采用大单体直接共聚法,合成早强型聚羧酸系高分子减水剂.对单体摩尔分数、引发剂用量、反应温度等反应条件进行系统考察,得到最佳合成工艺参数:聚乙二醇单甲醚衣康酸酯、聚乙二醇单甲醚甲基丙烯酸酯、N-[4-(磺酰胺)苯基]丙烯酰胺的摩尔分数分别为35%,35%,30%,引发剂用量为3%(占单体总量),反应温度80℃,反应时间5 h.与传统聚羧酸系高分子减水剂进行对比的实验结果显示,所合成的早强型聚羧酸系高分子减水剂在减水率及抗压强度等方面都有更好的效果.
In this paper,a novel early strength polycarboxylate superplasticizer is prepared by the copolymerization of methoxy polyethylene glycol itaconate,polyethylene glycol methyl ether methacrylate and N-[4-(aminosulfonyl)phenyl]-2-propenamide. The effects of the ratio,amount of initiator temperature and time on the reaction are investigated. We find the optimal conditions for preparing early strength polycarboxylate superplasticizer are 35%mole fraction methoxy polyethylene glycol itaconate,35% mole fraction polyethylene glycol methyl ether methacrylate,30% mole fraction(N-[4-(aminosulfonyl)phenyl]-2-propenamide)3% amount of initiator by(accounting for the sum amount of monomer,80 ℃ reaction temperature and 5 h reaction time. The result showes that the early strength polycarboxylate superplasticizer has a better effect to the water-reducing rate and strength than other traditional polycarboxylate superplasticizer.
In this paper,a novel early strength polycarboxylate superplasticizer is prepared by the copolymerization of methoxy polyethylene glycol itaconate,polyethylene glycol methyl ether methacrylate and N-[4-(aminosulfonyl)phenyl]-2-propenamide. The effects of the ratio,amount of initiator temperature and time on the reaction are investigated. We find the optimal conditions for preparing early strength polycarboxylate superplasticizer are 35%mole fraction methoxy polyethylene glycol itaconate,35% mole fraction polyethylene glycol methyl ether methacrylate,30% mole fraction(N-[4-(aminosulfonyl)phenyl]-2-propenamide)3% amount of initiator by(accounting for the sum amount of monomer,80 ℃ reaction temperature and 5 h reaction time. The result showes that the early strength polycarboxylate superplasticizer has a better effect to the water-reducing rate and strength than other traditional polycarboxylate superplasticizer.
引文
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[21]魏贝贝,许峰,马健岩,等.早强型聚羧酸减水剂的性能研究[J].硅酸盐通报,2017,36(7):2453-2458.
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[2]霍龙,景延会,朱旭,等.混凝土减水剂的研究进展综述[J].价值工程,2018,37(24):271-272.
[3] LEI L,PLANK J. Synthesis,working mechanism and effectiveness of a novel cycloaliphatic superplasticizer for concrete[J]. Cement and Concrete Research,2012,42(1):118-123.
[4] LANGE A,PLANK J. Study on the foaming behaviour of allyl ether-based polycarboxylate superplasticizers[J]. Cement and Concrete Research,2012,42(2):484-489.
[5] GUAN B L,YE Q Q,ZHANG J L. Interaction between alpha-calcium sulfate hemihydrate and superplasticizer from the point of adsorption characteristics,hydration and hardening process[J]. Cement and Concrete Research,2010,40(2):253-259.
[6]王子明,刘进强.新型聚羧酸系超早强复合减水剂试验研究[J].低温建筑技术,2008,30(6):15-17.
[7]赖广兴,方云辉,林艳梅,等.促凝早强型聚羧酸减水剂的合成及性能研究[J].新型建筑材料,2017,44(5):17-20.
[8] HANEHARAS,YAMADAK.Rheologyandearlyagepropertiesofcementsystems[J].CementandConcrete Research,2008,38(2):175-195.
[9]汪梁.早强型聚羧酸减水剂的研究[J].新型建筑材料,2016,43(1):30-32.
[10] YVES F H,BOWEN P,FRAN?OIS P,et al. Design and function of novel superplasticizers for more durable high performance concrete[J]. Cement and Concrete Research,2008,38(10):1197-1209.
[11]曹禹,孙宁,徐朝华,等.早强型聚羧酸系复合减水剂试验研究[J].广东化工,2016,43(11):12-14.
[12]倪涛,夏亮亮,陶俊,等.早强型聚羧酸减水剂的合成及性能研究[J].新型建筑材料,2017,44(12):74-76.
[13]孙振平,罗琼,蒋正武,等.早强型聚羧酸系减水剂的性能研究[J].低温建筑技术,2010,32(9):5-7.
[14]张志勇,冉千平,杨勇,等.烯丙基聚氧乙烯醚基马来酸酐类减水剂的合成与性能研究[J].新型建筑材料,2011,38(6):40-43.
[15]朱琳俐,冯恩娟,徐正华,等.聚醚接枝聚羧酸系高效减水剂合成[J].南京工业大学学报(自然科学版),2010,32(1):106-110.
[16]陈亚萍,杨廷雄,宋冬生,等.早强快凝型聚羧酸减水剂的制备与性能研究[J].新型建筑材料,2013,40(2):9-11.
[17]王飞镝,王凌伟,郭宝春,等.酯化制备马来酸酐系减水剂的研究[J].新型建筑材料,2010,37(6):11-14.
[18]雷西萍.复配型早强减水剂的制备与性能研究[J].硅酸盐通报,2010,29(4):948-952.
[19]郭春芳,张明.早强型聚羧酸系高性能减水剂合成研究[J].新型建筑材料,2012,39(4):45-47.
[20]张栓红,张磊,张学强,等.早强保坍型聚羧酸系减水剂的合成及其性能研究[J].硅酸盐通报,2015,34(5):1454-1458.
[21]魏贝贝,许峰,马健岩,等.早强型聚羧酸减水剂的性能研究[J].硅酸盐通报,2017,36(7):2453-2458.
[22]张明,段彬,贾吉堂,等.新型聚羧酸系高性能减水刑的合成研究[J].新型建筑材料,2010,37(3):84-87.