聚合物—铝酸—钙界面组成与结构的XPS研究

从复合材料界面的角度,采用XPS综合方法研究了水泥基聚合物复合材料的高强特别是高抗弯强度的微观机理。结果表明,在材料界面上存在明显的电子结合能化学位移效应,并被证实为聚合物与无机水泥的化学键合所致。界面层的深度分析发现,掺加聚合物的材料界面具有良好的化学和物理结构。作者认为这种材料的高强机理主要是由于两种基质界面间的有效化学键合作用,形成了良好的界面结构,因此,可认为这种作用大于有的学者所解释的聚合物的单一物理作用。

XPS STUDY ON THE COMPOSITION AND STRUCTURE OF POLYMER-MONOCALCIUM ALUMINATE INTERFACE

XPS comprehensive method is used to study the composition and structure of interface in high compressive strength, especially high bending strength cement-based composite material. Research results show that there is obvious chemical shift effect of electronic binding energy of the studied material, which is induced by the bond action of polymer and inorganic matrix. Through depth analysis of the interface layer, it is discovered that interface of the material added with polymer has good chemical and physical structure. Analysis results show that failure of the material by force doesn't all take place at the interface. It is believed that the mechanism of high strength is mainly due to the efficient chemical bond between two materials at the interface which form superior interface structure