Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Magnetic release microcapsule for cement concrete self-repairing and preparation method thereof
The invention discloses a magnetic release microcapsule for cement concrete self-repairing and a preparation method thereof, and belongs to the technical field of concrete. The capsule wall of the magnetic release microcapsule for cement concrete self-repairing is formed by compounding chitosan, hydroxyethyl cellulose, thermal expansion type graphite and magnetic iron powder, and the capsule core is epoxy resin. According to the microcapsule prepared by the invention, the temperature of the wall material can be increased through an external electromagnetic field, the graphite is expanded to support the wall material, the internal epoxy resin is released and encounters a curing agent dispersed in a cement matrix to be subjected to a curing reaction, and a polymer is generated to repair cracks in concrete. By adopting the microcapsule prepared by the invention, cracks formed in concrete can be repaired in time, and the service life of a concrete structure is prolonged.
本发明公开了一种水泥混凝土自修复用磁致释放微胶囊及其制备方法，属于混凝土技术领域。水泥混凝土自修复用磁致释放微胶囊的囊壁由壳聚糖、羟乙基纤维素、热膨胀型石墨、磁性铁粉复合组成，囊芯为环氧树脂。本发明制备的微胶囊可通过外加电磁场使壁材温度升高，石墨产生膨胀进而撑破壁材，释放出内部的环氧树脂，与分散在水泥基体中的固化剂相遇发生固化反应，生成聚合物以修复混凝土中的裂缝。采用本发明制备的微胶囊，可及时修复混凝土中形成的裂缝，延长混凝土构筑物的服役寿命。
Magnetic release microcapsule for cement concrete self-repairing and preparation method thereof
The invention discloses a magnetic release microcapsule for cement concrete self-repairing and a preparation method thereof, and belongs to the technical field of concrete. The capsule wall of the magnetic release microcapsule for cement concrete self-repairing is formed by compounding chitosan, hydroxyethyl cellulose, thermal expansion type graphite and magnetic iron powder, and the capsule core is epoxy resin. According to the microcapsule prepared by the invention, the temperature of the wall material can be increased through an external electromagnetic field, the graphite is expanded to support the wall material, the internal epoxy resin is released and encounters a curing agent dispersed in a cement matrix to be subjected to a curing reaction, and a polymer is generated to repair cracks in concrete. By adopting the microcapsule prepared by the invention, cracks formed in concrete can be repaired in time, and the service life of a concrete structure is prolonged.
本发明公开了一种水泥混凝土自修复用磁致释放微胶囊及其制备方法，属于混凝土技术领域。水泥混凝土自修复用磁致释放微胶囊的囊壁由壳聚糖、羟乙基纤维素、热膨胀型石墨、磁性铁粉复合组成，囊芯为环氧树脂。本发明制备的微胶囊可通过外加电磁场使壁材温度升高，石墨产生膨胀进而撑破壁材，释放出内部的环氧树脂，与分散在水泥基体中的固化剂相遇发生固化反应，生成聚合物以修复混凝土中的裂缝。采用本发明制备的微胶囊，可及时修复混凝土中形成的裂缝，延长混凝土构筑物的服役寿命。
Magnetic release microcapsule for cement concrete self-repairing and preparation method thereof
一种水泥混凝土自修复用磁致释放微胶囊及其制备方法
LI YING (Autor:in) / YANG MING (Autor:in) / JIN SHENGXI (Autor:in) / ZHU TONGXI (Autor:in) / LIU KAIYUAN (Autor:in) / YU JIANYING (Autor:in) / ZHUANG RONGHUA (Autor:in) / WANG JIANKANG (Autor:in)
12.11.2024
Patent
Elektronische Ressource
Chinesisch
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