利用聚合物对水泥进行改性提高水泥基材料的力学性能,已成为近年的研究热点。聚合物掺入水泥后,能细化水泥基材料的微观结构,改善水泥基材料的凝结时间、流动性、力学性能和耐久性。综述了近年来丁苯乳液、聚氨酯、环氧树脂、羟丙基甲基纤维素醚、聚丙烯酰胺等聚合物在水泥基材料中的研究进展,介绍了聚合物使用过程中存在的问题,指出加强无机-有机原位增韧改性水泥基材料及其耐久性研究,制备性能优异的环境友好型水泥基材料将是未来的研究方向。
The use of polymer modified cement to improve the mechanical properties of cement based materials has become a research focus in recent years.Polymer can refine the microstructure of cement based materials,and improve the setting time,fluidity,mechanical properties and durability of cement based materials.The recent progress in the research of styrene-butadiene emulsion,polyurethane,epoxy resin,hydroxypropyl methylcellulose,polyacrylamide and other polymers in cement based materials were reviewed,and introduced the problems in the use of polymers.It was pointed out that strengthening inorganic-organic in situ toughened modified cementitious materials and their durability research,and preparing environment-friendly cementitious materials with excellent performance will be the future research direction.
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基金资助
国家重点研发计划资助项目(2017YFC0603004);国家自然科学基金重点基金(U1905216);河南省自然科学基金资助项目(182300410207)
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