树脂-水泥界面改性的多尺度表征  

Multi-scale Characterization of Resin-Cement Interface Modification

作　　者：王睿[1] 王昕霞[1] 谢涛[2] WANG Rui;WANG Xin-xia;XIE Tao(Arts and Design College ,Nanchang University ,Nanchang 330031,China;School of Civil Engineering and Architecture ,Nanchang University ,Nanchang 330031, China)

机构地区：[1]南昌大学艺术与设计学院,南昌330031 [2]南昌大学建筑工程学院,南昌330031

出　　处：《硅酸盐通报》2018年第1期67-72,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51562024;51478183);江西省杰出青年人才资助计划(20162BCB23014)

摘　　要：为从多尺度层次探明水泥基体与透明树脂界面以及偶联剂对界面的改性作用,利用硅烷偶联剂A-151和液体铝酸酯偶联剂处理水泥与树脂界面,采用抗拉和斜剪、显微硬度、FTIR和ESEM等测试手段从宏观、细观、微观尺度来表征界面的粘结强度、显微硬度、微观形貌和化学反应。结果表明:在宏观方面,硅烷偶联剂A-151和液体铝酸酯偶联剂能大幅提高树脂-水泥界面抗拉和斜剪强度,28 d强度至少提高73%和40%。在细观方面,偶联剂改善了透明树脂与水泥基体界面显微硬度,特别是在界面-10~10μm区间内,且降低透明树脂"性能减弱区域"厚度达100μm。在微观方面,硅烷偶联剂A-151、液体铝酸酯偶联剂与水化硅酸钙CSH中羟基OH反应分别生成Si-OSi键和Al-O-Si键,偶联剂促使水泥净浆与透明树脂更好地融合,极大地改善了界面粘结情况。In order to investigate the characteristics of the interface between cement matrix and transparent resin and the modification effect of coupling agent on the interface from multi-scale level,the resincement interface was treated with the silane coupling agent A-151 and aluminate coupling agent,respectively.The bonding strength,micro-hardness,microscopic morphology and chemical reaction of resin-cement interface were characterized by the macro,meso and micro scale with the tensile and oblique shear,micro-hardness,fourier transform infrared spectroscopy and environmental scanning electron microscopy tests.The results show that in the macroscopic aspect,silane coupling agent A-151 and aluminum coupling agent can significantly improve tensile and oblique shear bond strength of interface between transparent resin and cement matrix,the 28 d strength at least increased by 73% and40%.In the mesoscopic aspect,the coupling agent significantly improves the interface micro-hardness of resin-cement,especially in the-10-10 μm range,which reduces the resin performance weakened region thickness up to 100 μm.In the microscopic aspect,the silane coupling agent A-151 and aluminate coupling agent react with hydroxyl（OH） in calcium silicate hydrate（CSH） to form Si-O-Si and Al-O-Si bond,respectively.Two coupling agents can make the interface cement paste and transparent resin tightly integrated to form a whole.The interface adhesion is greatly improved.

关 键 词：界面 多尺度 偶联剂 水泥 树脂 

分 类 号：TQ172[化学工程—水泥工业]