Synthesis and properties of an amphoteric polycarboxylic acid-based superplasticizer used in sulfoaluminate cement
Synthesis and properties of an amphoteric polycarboxylic acid-based superplasticizer used in sulfoaluminate cement
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DOI：
10.1002/app.35565
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发表时间：
2012-07
影响因子：
3
通讯作者：
Wenjuan Guo;Na Sun;J. Qin;J. Zhang;M. Pei;Ying-feng Wang;S. Wang
中科院分区：
文献类型：
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作者：
Wenjuan Guo;Na Sun;J. Qin;J. Zhang;M. Pei;Ying-feng Wang;S. Wang
以马来酸酐、烯丙基聚乙二醇和甲基丙烯酰氧乙基三甲基氯化铵为原料，采用溶液共聚法制备了一种新型两性聚羧酸（APC）高效减水剂。引入阳离子单体DMC，采用APC法改善硫铝酸盐水泥的性能。通过正交试验确定了APC的制备条件，并对新拌砂浆和硬化砂浆的性能进行了评价。用FTIR对APC进行了表征。考察了APC的吸附量和分散效果。结果表明，APC能改善SAC砂浆的流动性，提高其力学性能。APC在SAC中的吸附量较大。与阴离子PC高效减水剂和商品高效减水剂ViscoCrete 3390相比，APC具有更好的性能。© 2011 Wiley Periodicals，Inc.应用聚合物科学杂志，2012年
A novel amphoteric polycarboxylic (APC) acid-based superplasticizer was prepared by solution copolymerization from maleic anhydride, allyl polyethylene glycol, and methacryloxyethyltrimethyl ammonium chloride (DMC). The cationic monomer DMC was introduced for improving the performances of sulfoaluminate cement (SAC) with APC. The condition on preparation of APC was determined by the orthogonal experiment, and the performances of fresh and hardened superplasticized mortars were assessed. APC was characterized by FTIR spectra. Adsorption amount and dispersing effectiveness of APC were also investigated. Results indicated that APC could improve the fluidity and enhance the mechanical performances of SAC mortars. Adsorption amount of APC in SAC is large. Compared with an anionic PC superplasticizer and a commercial superplasticizer Visco Crete 3390, APC has the better performance. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012