A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Cement-based material self-repairing microsphere as well as preparation method and application thereof
The invention provides a cement-based material self-repairing microsphere, a preparation method of the cement-based material self-repairing microsphere and application of the microsphere to a self-repairing cement-based material. The cement-based material self-repairing microsphere provided by the invention is of a core-shell structure, the core of the microsphere is the high-strength water-absorbent resin particles, the shell of the microsphere is the acrylate polymer, and the microspheroidization of the high-strength water-absorbent resin particles can prevent the high-strength water-absorbent resin particles from being in contact with cement paste, so that the cement does not absorb water in the hydration process, the performance of the cement is not influenced, and the service life of the cement is prolonged. Meanwhile, the compatibility of the water-absorbent resin particles and the cement-based material is improved; when the cement-based material has cracks or defects, the shell of the microsphere is also damaged under the action of external force, the water-absorbent resin expands when encountering water, and the inorganic salt generates crystals when encountering water to block pores, so that the impermeability of the cement is improved, and the self-repairing effect of the cement when encountering water is realized.
本发明提供一种水泥基材料自修复微球及其制备方法，以及该微球用于自修复水泥基材料。本发明提供的水泥基材料自修复微球为核壳结构，微球的核为高强度吸水树脂微粒，微球的壳为丙烯酸酯类聚合物，其中，高强度吸水树脂微粒的微球化可防止其与水泥浆接触，确保在水泥水化过程中不吸收水分，不影响水泥的性能，同时提高吸水树脂微粒与水泥基材料相容性；当水泥基材料出现裂缝或缺陷时，微球的壳在外力作用下也被破坏，吸水树脂遇水膨胀，无机盐遇水生成结晶物，堵塞孔隙，提高水泥抗渗性，从而实现水泥遇水自修复效果。
Cement-based material self-repairing microsphere as well as preparation method and application thereof
The invention provides a cement-based material self-repairing microsphere, a preparation method of the cement-based material self-repairing microsphere and application of the microsphere to a self-repairing cement-based material. The cement-based material self-repairing microsphere provided by the invention is of a core-shell structure, the core of the microsphere is the high-strength water-absorbent resin particles, the shell of the microsphere is the acrylate polymer, and the microspheroidization of the high-strength water-absorbent resin particles can prevent the high-strength water-absorbent resin particles from being in contact with cement paste, so that the cement does not absorb water in the hydration process, the performance of the cement is not influenced, and the service life of the cement is prolonged. Meanwhile, the compatibility of the water-absorbent resin particles and the cement-based material is improved; when the cement-based material has cracks or defects, the shell of the microsphere is also damaged under the action of external force, the water-absorbent resin expands when encountering water, and the inorganic salt generates crystals when encountering water to block pores, so that the impermeability of the cement is improved, and the self-repairing effect of the cement when encountering water is realized.
本发明提供一种水泥基材料自修复微球及其制备方法，以及该微球用于自修复水泥基材料。本发明提供的水泥基材料自修复微球为核壳结构，微球的核为高强度吸水树脂微粒，微球的壳为丙烯酸酯类聚合物，其中，高强度吸水树脂微粒的微球化可防止其与水泥浆接触，确保在水泥水化过程中不吸收水分，不影响水泥的性能，同时提高吸水树脂微粒与水泥基材料相容性；当水泥基材料出现裂缝或缺陷时，微球的壳在外力作用下也被破坏，吸水树脂遇水膨胀，无机盐遇水生成结晶物，堵塞孔隙，提高水泥抗渗性，从而实现水泥遇水自修复效果。
Cement-based material self-repairing microsphere as well as preparation method and application thereof
一种水泥基材料自修复微球及其制备方法和应用
XU WEI (author) / ZHANG TIANYU (author) / HOU DANDAN (author) / XU CHUNMEI (author) / ZHANG ZENGLI (author)
2022-11-01
Patent
Electronic Resource
Chinese
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