水性环氧树脂改性水泥砂浆力学性能及微观结构  

Mechanical Properties and Microstructure of Waterborne Epoxy Resin Modified Cement Mortar

作　　者：黄展魏 陈伟[2] 李秋[2] 王蒙[1] 范剑锋[3] 

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070 [2]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070 [3]武汉理工大学建筑设计研究院,武汉430070

出　　处：《硅酸盐通报》2017年第8期2530-2535,2540,共7页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51672199)

摘　　要：通过对水泥砂浆中掺加水性环氧树脂,制备了水性环氧树脂改性水泥砂浆,研究了不同聚灰比下,水性环氧树脂对水泥砂浆水化和强度的影响。运用XRD、TG/DSC、SEM、FTIR微观测试手段,研究了水性环氧树脂对水泥砂浆水化产物的影响。研究结果表明:水性环氧树脂可形成聚合物膜会延迟水泥水化;水性环氧树脂的加入会降低水泥砂浆的抗压强度;当聚灰比在2%范围以内,水性环氧树脂可以提高水泥砂浆的抗折强度。The effect of waterborne epoxy resin on the hydration and strength of cement mortar was studied by adding waterborne epoxy resin into the cement mortar. The effect of waterborne epoxy resin on the hydration product of cement mortar was studied by means of X-ray powder diffraction,thermo-gravimetry and differential scanning calorimetry, scanning electronic microscopy and fourier transform infrared spectroscopy microscopy. The results show that the polymer film of waterborne epoxy resin delay the hydration of cement and can reduce the compressive strength of the cement mortar. When the ratio polymer/cement is within 2%,the water-based epoxy resin can improve the flexural strength of cement mortar.

关 键 词：水性环氧树脂 水泥砂浆 聚合物膜 强度 

分 类 号：TU525[建筑科学—建筑技术科学]