A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Graphene oxide dispersion liquid, graphene oxide modified cement mortar and preparation method and application of graphene oxide modified cement mortar
The invention belongs to the technical field of building materials, and relates to graphene oxide dispersion liquid, graphene oxide modified cement mortar and a preparation method and application of the graphene oxide modified cement mortar. The preparation method of the graphene oxide dispersion liquid comprises the following steps: S1, carrying out first modification reaction on graphene oxide and a sulfonic acid group source compound in a first solution to obtain sulfonic acid group modified graphene oxide; and S2, carrying out a second modification reaction on the sulfonic group modified graphene oxide and tea polyphenol in a second solution to obtain the graphene oxide dispersion liquid. The preparation method is characterized in that the dispersity of graphene oxide in a high-calcium and high-alkalinity environment of cement mortar can be improved through the synergistic modification effect of sulfonic acid groups and tea polyphenols on graphene oxide, so that when the obtained modified graphene oxide dispersion liquid is added into the cement mortar, the fluidity of the cement mortar can be improved, and the water resistance of the cement mortar is improved. The breaking strength and the compressive strength of the cement mortar can also be improved.
本发明属于建筑材料技术领域，涉及一种氧化石墨烯分散液和氧化石墨烯改性的水泥砂浆及其制备方法和应用。所述氧化石墨烯分散液的制备方法包括：S1.将氧化石墨烯与磺酸基源化合物在第一溶液中进行第一改性反应，得到磺酸基修饰的氧化石墨烯；S2.将磺酸基修饰的氧化石墨烯与茶多酚在第二溶液中进行第二改性反应，得到氧化石墨烯分散液。本发明的关键在于通过磺酸基和茶多酚对氧化石墨烯的协同改性作用，可以提升氧化石墨烯在水泥砂浆的高钙高碱性环境中的分散性，由此所得的改性氧化石墨烯分散液添加到水泥砂浆中时，不仅能够提升水泥砂浆的流动度，还能够提升水泥砂浆的抗折强度和抗压强度。
Graphene oxide dispersion liquid, graphene oxide modified cement mortar and preparation method and application of graphene oxide modified cement mortar
The invention belongs to the technical field of building materials, and relates to graphene oxide dispersion liquid, graphene oxide modified cement mortar and a preparation method and application of the graphene oxide modified cement mortar. The preparation method of the graphene oxide dispersion liquid comprises the following steps: S1, carrying out first modification reaction on graphene oxide and a sulfonic acid group source compound in a first solution to obtain sulfonic acid group modified graphene oxide; and S2, carrying out a second modification reaction on the sulfonic group modified graphene oxide and tea polyphenol in a second solution to obtain the graphene oxide dispersion liquid. The preparation method is characterized in that the dispersity of graphene oxide in a high-calcium and high-alkalinity environment of cement mortar can be improved through the synergistic modification effect of sulfonic acid groups and tea polyphenols on graphene oxide, so that when the obtained modified graphene oxide dispersion liquid is added into the cement mortar, the fluidity of the cement mortar can be improved, and the water resistance of the cement mortar is improved. The breaking strength and the compressive strength of the cement mortar can also be improved.
本发明属于建筑材料技术领域，涉及一种氧化石墨烯分散液和氧化石墨烯改性的水泥砂浆及其制备方法和应用。所述氧化石墨烯分散液的制备方法包括：S1.将氧化石墨烯与磺酸基源化合物在第一溶液中进行第一改性反应，得到磺酸基修饰的氧化石墨烯；S2.将磺酸基修饰的氧化石墨烯与茶多酚在第二溶液中进行第二改性反应，得到氧化石墨烯分散液。本发明的关键在于通过磺酸基和茶多酚对氧化石墨烯的协同改性作用，可以提升氧化石墨烯在水泥砂浆的高钙高碱性环境中的分散性，由此所得的改性氧化石墨烯分散液添加到水泥砂浆中时，不仅能够提升水泥砂浆的流动度，还能够提升水泥砂浆的抗折强度和抗压强度。
Graphene oxide dispersion liquid, graphene oxide modified cement mortar and preparation method and application of graphene oxide modified cement mortar
一种氧化石墨烯分散液和氧化石墨烯改性的水泥砂浆及其制备方法和应用
WANG YAN (author) / YANG JI (author) / GUO ZHIWEI (author) / HONG CONGBIN (author) / ZHANG XUEAO (author)
2024-11-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
Graphene oxide/polymer modified cement-based repair mortar and preparation method thereof
| European Patent Office | 2021
| European Patent Office | 2024
Mechanical properties and micromechanics of graphene oxide modified calcareous sand-cement mortar
| Taylor & Francis Verlag | 2024
Mechanical Properties of Cement Mortar Composites Containing Graphene Oxide
| Springer Verlag | 2019