关键词: 粉煤灰, 复合材料, 制备, 硅烷偶联剂, 力学性能

Abstract: The carbon gold plate highly filled with fly ash was prepared by hot pressing,and its mechanical property was explored by adding different amount of silane coupling agent. The fracture appearance of the obtained plates was observed by SEM. The surface element distribution of the samples was analyzed through EDS. The results indicated that adding proper amount of silane coupling agent (KH550) can improve the mechanical property of the carbon gold plate. When fly ash was 400phr and the content of silane coupling agent (KH550) was 2wt% of the fly ash,the mechanical property of the carbon gold plate reached the optimal state:the tensile strength,the bending strength and the impact strength were 31.59MPa 58.33MPa and 2.07kJ/m²,respectively,which all met the standards for common architectural decoration materials. The mass fraction of fly ash reached as high as 73 wt%.

Key words: fly ash, composites, preparation, silane coupling agent, mechanical properties