水泥砂浆增强剂丙烯酸酯乳液的研制

Study on acrylic emulsion for enhancing cement mortar

混凝土材料的多孔性和易产生裂纹等问题影响了混凝土材料和结构的耐久性,导致了混凝土结构出现过早劣化,极大地影响了混凝土设施的正常使用。用水泥砂浆增强剂配制的新型混凝土材料——聚合物改性水泥砂浆具有很好的防渗性、防裂性、耐磨性、粘附性以及压缩和拉伸强度高等优点,已广泛用于建造高结构强度、高抗震、高质量和长久寿命的建筑。

Cement mortar systems are inherently porous and prone to cracking upon drying and curing.These defects cause significant reduction of strength and longevity,which lead to premature failures of the structures.Synthetic emulsion polymers,or polymer latexes,have been extensively used to help solving this problem.These new types of polymer modified cement mortar systems are more resistant to cracking and fluid permeation,have higher adhesive,compressive and tensile strengths,which allow high quality structures to be built with higher stability,earthquake resistance and durability.This paper described the design and synthesis of functional acrylic latexes.The mechanical test results showed that using these specialty emulsion polymer improved the processing and mechanical performance of the cement mortar systems.