Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-performance cement-based composite material containing reduced graphene oxide coated sand and preparation method of high-performance cement-based composite material
The invention belongs to the technical field of building materials, and relates to a high-performance cement-based composite material containing reduced graphene oxide coated sand and a preparation method of the high-performance cement-based composite material. The fine aggregate is subjected to surface modification through a surface modification solution, a polydopamine layer is generated on the surface of the fine aggregate through self-polymerization by utilizing the strong adhesion capacity of dopamine hydrochloride, and reduced graphene oxide is firmly adhered to the surface of the polydopamine layer by polydopamine due to the synergistic effect of covalent bonds and non-covalent bonds, so that the surface of the fine aggregate is modified. The high-quality graphene coated sand is prepared, the adverse effect caused by poor dispersity when the graphene coated sand is directly doped into a cement matrix is avoided, meanwhile, an excellent conductive path is built in the cement-based composite material, and the multifunctional conductive cement-based composite material is obtained. The preparation method is low in preparation cost and short in preparation time, and the prepared cement-based composite material has the characteristics of high performance, high conductivity and intelligence, is convenient to realize large-scale popularization and application, and has relatively high engineering applicability.
本发明属于建筑材料技术领域，涉及一种含有还原氧化石墨烯包覆砂的高性能水泥基复合材料及其制备方法。本发明通过表面改性溶液对细骨料进行表面改性，利用盐酸多巴胺的强黏附能力，在细骨料表面自聚合生成一层聚多巴胺层，聚多巴胺因共价键和非共价键的协同作用将还原氧化石墨烯牢固黏附在聚多巴胺层的表面，制备出高品质的石墨烯包覆砂，避免将其直接掺入水泥基体因分散性不良而引起的不利影响，同时实现在水泥基复合材料中搭建优异的导电通路，得到多功能化的导电水泥基复合材料。本发明的制备成本低、制备时间短，制备的水泥基复合材料具有高性能、高导电、智能化的特点，便于实现大规模推广使用，具有较高的工程适用性。
High-performance cement-based composite material containing reduced graphene oxide coated sand and preparation method of high-performance cement-based composite material
The invention belongs to the technical field of building materials, and relates to a high-performance cement-based composite material containing reduced graphene oxide coated sand and a preparation method of the high-performance cement-based composite material. The fine aggregate is subjected to surface modification through a surface modification solution, a polydopamine layer is generated on the surface of the fine aggregate through self-polymerization by utilizing the strong adhesion capacity of dopamine hydrochloride, and reduced graphene oxide is firmly adhered to the surface of the polydopamine layer by polydopamine due to the synergistic effect of covalent bonds and non-covalent bonds, so that the surface of the fine aggregate is modified. The high-quality graphene coated sand is prepared, the adverse effect caused by poor dispersity when the graphene coated sand is directly doped into a cement matrix is avoided, meanwhile, an excellent conductive path is built in the cement-based composite material, and the multifunctional conductive cement-based composite material is obtained. The preparation method is low in preparation cost and short in preparation time, and the prepared cement-based composite material has the characteristics of high performance, high conductivity and intelligence, is convenient to realize large-scale popularization and application, and has relatively high engineering applicability.
本发明属于建筑材料技术领域，涉及一种含有还原氧化石墨烯包覆砂的高性能水泥基复合材料及其制备方法。本发明通过表面改性溶液对细骨料进行表面改性，利用盐酸多巴胺的强黏附能力，在细骨料表面自聚合生成一层聚多巴胺层，聚多巴胺因共价键和非共价键的协同作用将还原氧化石墨烯牢固黏附在聚多巴胺层的表面，制备出高品质的石墨烯包覆砂，避免将其直接掺入水泥基体因分散性不良而引起的不利影响，同时实现在水泥基复合材料中搭建优异的导电通路，得到多功能化的导电水泥基复合材料。本发明的制备成本低、制备时间短，制备的水泥基复合材料具有高性能、高导电、智能化的特点，便于实现大规模推广使用，具有较高的工程适用性。
High-performance cement-based composite material containing reduced graphene oxide coated sand and preparation method of high-performance cement-based composite material
一种含有还原氧化石墨烯包覆砂的高性能水泥基复合材料及其制备方法
KONG XIANGQING (Autor:in) / SUN RUOQIAN (Autor:in) / FU YING (Autor:in) / BAN TIANYI (Autor:in) / LI LING (Autor:in) / ZHOU YUANMING (Autor:in)
25.04.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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