| 刘洪丽,曹家豪,李亚静,潘华,韩雪,李婧.还原氧化石墨烯增强水泥基复合材料微观结构及力学性能[J].水泥工程,2020,33(1):7-10 |
| 还原氧化石墨烯增强水泥基复合材料微观结构及力学性能 |
| Microstructure and Mechanical Properties of Reduced Graphene Oxide Reinforced Cement-based Composites |
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| DOI： |
| 中文关键词: 氧化石墨烯,水泥基复合材料,还原程度,力学性能,微观结构 |
| 英文关键词: Graphene oxide, Cement-based composites, Reduction degree, Mechanical properties, Microstructure |
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| 中文摘要: |
| 采用水热还原法制备了不同还原程度的还原氧化石墨烯（RGO），并将其添加到水泥浆体中，制得石墨烯增强水泥基复合材料。采用傅里叶变换红外光谱（FT-IR）、力学性能测试仪、扫描电子显微镜（SEM）对氧化石墨烯（GO）还原程度及水泥基复合材料的力学性能和微观结构进行测试。结果表明，在120℃水热条件下，控制不同还原时间可以得到不同还原程度的RGO；随着GO还原程度的提高，复合材料力学强度不断增加；RGO可使水泥更加密实，降低了水泥浆体的孔隙率，对水泥基复合材料起到增强增韧的作用。 |
| 英文摘要: |
| Reduced graphene oxide (RGO) with different degrees of reduction has been prepared by the hydrothermal reduction method and then was added to cement slurry to obtain grapheme-reinforced cement-based composites. Subsequently, the reduction degree of graphene oxide (GO), mechanical properties and microstructure of cement-based composites were characterized by Fourier Transform infrared spectroscopy (FT-IR), mechanical property tester and scanning electron microscopy (SEM). The results show that under the hydrothermal temperature of 120 °C, RGO with different reduction degrees can be obtained by controlling the reduction time; with the increase of GO reduction degrees, the mechanical strength of composites increases constantly; RGO can make the cement more compact, which reduces the porosity of the cement slurry and plays an important role in strengthening and toughening the cement-based composite materials. |
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