微波辅助合成聚羧酸减水剂及其性能研究
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摘要
本文采用微波法合成聚羧酸减水剂,研究多种因素对合成产物性能的影响规律;选用聚乙二醇2000在理论配比下反应,甲基丙烯酸过量,120℃酯化,90℃下聚合,以磁力叠加超声搅拌,聚合过程氮气保护,实现了产物分子量可控,显著缩短合成反应时间;红外表征结果与设计分子官能团一致。合成产物在掺量为0.5%、0.75%和1.0%时,(砂浆)减水率分别达到25%、31%和35%。
引文
[1]A.Lange,T.Hirata,J.Plank.Influence of the HLB value of polycarboxylate superplasticizers on the flow behavior of mortar and concrete[J](Eng).Cement and Concrete Research,2014,60:45-50.
[2]游长江,丁超,胡国栋,等.聚羧酸类高效减水剂的研究进展[J].高分子材料科学与工程,2003,19(2):34-37.
[3]李顺,余其俊,韦江雄,等.分子量及其分布对聚羧酸减水剂吸附行为的影响[J].硅酸盐学报,2011,39(1):80-87.
[4]马保国,汪杰,谭洪波,等.聚羧酸减水剂分子结构对C_3A-石膏体系吸附性能及水化行为的影响[J].混凝土,2014(11):1-4.
[5]孔祥明,刘辉,蒋凌飞,等.含硅烷官能团聚羧酸减水剂对水泥浆体流动性和力学性能的影响[J].硅酸盐学报,2014,42(5):635-638.
[6]何廷树,申富强,王福川,等.复合使用高效减水剂与缓凝剂对水泥水化历程的影响[J].硅酸盐学报,2007,35(6):796-799.
[7]Tsuyoshi HIRATA,Toyoharu NAWA.The effect of polycarboxylate-type superplasticizer controlled its adsorption rate onto the cement particles by changing the polymer structure[J](Eng).Journal of Structural and Construction Engineering,2009,74:765-773.
[8]Duan G R,Huang G H,Li A M,et al.A study of supermolecular polarization of comb-like polycarboxylate admixtures synthesized with polyoxyethylene macromolecules[J](Eng).Journal of Molecular Liquids,2012,174:129-134.
[9]刘振德,何煦昌.微波辅助的Michael加成反应[J].化学进展,2006,18(9):1121-1130.
[10]费进波,田熙科,杨超,等.微波辅助化学反应制备纳米高岭石[J].岩石矿物学杂志,2006,25(4):0335-0337.
[11]陈炜伟,杨展澜,刘铭钊,等.微波合成在稀土荧光材料制备中的应用[J].中国稀土学报,2001,19(6):0606-0608.
[12]Arzu Buyukyaogci,G(o|¨)zde Tuzcu,Leyla Aras.Synthesis of copolymers of methoxy polyethylene glycol acrylate and 2-acrylamido-2-methyl-1-propanesulfonic acid:Its characterization and application as superplasticizer in concrete[J].Cement and Concrete Research,2009,39(7):629-635.
[13]张光华,屈倩倩,朱军峰,等.聚羧酸盐SAS/MAA/APEG的制备与性能分析[J].高分子材料科学与工程,2014,30(4):143-147.
[2]游长江,丁超,胡国栋,等.聚羧酸类高效减水剂的研究进展[J].高分子材料科学与工程,2003,19(2):34-37.
[3]李顺,余其俊,韦江雄,等.分子量及其分布对聚羧酸减水剂吸附行为的影响[J].硅酸盐学报,2011,39(1):80-87.
[4]马保国,汪杰,谭洪波,等.聚羧酸减水剂分子结构对C_3A-石膏体系吸附性能及水化行为的影响[J].混凝土,2014(11):1-4.
[5]孔祥明,刘辉,蒋凌飞,等.含硅烷官能团聚羧酸减水剂对水泥浆体流动性和力学性能的影响[J].硅酸盐学报,2014,42(5):635-638.
[6]何廷树,申富强,王福川,等.复合使用高效减水剂与缓凝剂对水泥水化历程的影响[J].硅酸盐学报,2007,35(6):796-799.
[7]Tsuyoshi HIRATA,Toyoharu NAWA.The effect of polycarboxylate-type superplasticizer controlled its adsorption rate onto the cement particles by changing the polymer structure[J](Eng).Journal of Structural and Construction Engineering,2009,74:765-773.
[8]Duan G R,Huang G H,Li A M,et al.A study of supermolecular polarization of comb-like polycarboxylate admixtures synthesized with polyoxyethylene macromolecules[J](Eng).Journal of Molecular Liquids,2012,174:129-134.
[9]刘振德,何煦昌.微波辅助的Michael加成反应[J].化学进展,2006,18(9):1121-1130.
[10]费进波,田熙科,杨超,等.微波辅助化学反应制备纳米高岭石[J].岩石矿物学杂志,2006,25(4):0335-0337.
[11]陈炜伟,杨展澜,刘铭钊,等.微波合成在稀土荧光材料制备中的应用[J].中国稀土学报,2001,19(6):0606-0608.
[12]Arzu Buyukyaogci,G(o|¨)zde Tuzcu,Leyla Aras.Synthesis of copolymers of methoxy polyethylene glycol acrylate and 2-acrylamido-2-methyl-1-propanesulfonic acid:Its characterization and application as superplasticizer in concrete[J].Cement and Concrete Research,2009,39(7):629-635.
[13]张光华,屈倩倩,朱军峰,等.聚羧酸盐SAS/MAA/APEG的制备与性能分析[J].高分子材料科学与工程,2014,30(4):143-147.