Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Microcapsule for self-repairing of set cement and preparation method thereof
The invention relates to a microcapsule for self-repairing of set cement and a preparation method of the microcapsule. According to the preparation method provided by the invention, acrylamide is used as a raw material to prepare a water-swelling self-repairing core material, and the cement of calcium carbonate and epoxy resin is used as a wall material, so that the raw material is cheap and pollution-free, the production safety is effectively improved, the cost is reduced, the preparation process is simple, and batch production can be carried out. The water-swelling volume and mechanical strength of the polyacrylamide core material can be determined according to the addition amount of the initiator and the cross-linking agent, and the water-swelling self-repairing microcapsule suitable for different working environments can be prepared. The cement wall material of calcium carbonate and epoxy resin has certain mechanical strength, and is not easy to break in the preparation process of the cement paste. The microcapsule prepared by the method can obviously reduce the porosity of the set cement, improve the compressive strength and the breaking strength of the set cement, improve the compressive strength and the breaking strength of the set cement after self-healing and enhance the self-healing capability of the set cement, and has a good application prospect.
本发明涉及一种用于水泥石自修复的微胶囊及其制备方法。本发明提供的制备方法，以丙烯酰胺为原料制备吸水膨胀自修复芯材，以碳酸钙和环氧树脂的胶结物作为壁材，原材料便宜、无污染，有效提高生产安全性并降低成本，制作工艺简单，可进行批量生产。聚丙烯酰胺芯材的吸水膨胀体积与力学强度可依据引发剂与交联剂的添加量决定，能够制备适用于不同工作环境的吸水膨胀自修复微胶囊。碳酸钙和环氧树脂的胶结物壁材具有一定的力学强度，在水泥浆制备过程中不易破碎。利用该方法制备的微胶囊，能够显著降低水泥石孔隙度，提高水泥石抗压、抗折强度，提高水泥石自愈合后抗压、抗折强度，增强水泥石自愈合能力，应用前景良好。
Microcapsule for self-repairing of set cement and preparation method thereof
The invention relates to a microcapsule for self-repairing of set cement and a preparation method of the microcapsule. According to the preparation method provided by the invention, acrylamide is used as a raw material to prepare a water-swelling self-repairing core material, and the cement of calcium carbonate and epoxy resin is used as a wall material, so that the raw material is cheap and pollution-free, the production safety is effectively improved, the cost is reduced, the preparation process is simple, and batch production can be carried out. The water-swelling volume and mechanical strength of the polyacrylamide core material can be determined according to the addition amount of the initiator and the cross-linking agent, and the water-swelling self-repairing microcapsule suitable for different working environments can be prepared. The cement wall material of calcium carbonate and epoxy resin has certain mechanical strength, and is not easy to break in the preparation process of the cement paste. The microcapsule prepared by the method can obviously reduce the porosity of the set cement, improve the compressive strength and the breaking strength of the set cement, improve the compressive strength and the breaking strength of the set cement after self-healing and enhance the self-healing capability of the set cement, and has a good application prospect.
本发明涉及一种用于水泥石自修复的微胶囊及其制备方法。本发明提供的制备方法，以丙烯酰胺为原料制备吸水膨胀自修复芯材，以碳酸钙和环氧树脂的胶结物作为壁材，原材料便宜、无污染，有效提高生产安全性并降低成本，制作工艺简单，可进行批量生产。聚丙烯酰胺芯材的吸水膨胀体积与力学强度可依据引发剂与交联剂的添加量决定，能够制备适用于不同工作环境的吸水膨胀自修复微胶囊。碳酸钙和环氧树脂的胶结物壁材具有一定的力学强度，在水泥浆制备过程中不易破碎。利用该方法制备的微胶囊，能够显著降低水泥石孔隙度，提高水泥石抗压、抗折强度，提高水泥石自愈合后抗压、抗折强度，增强水泥石自愈合能力，应用前景良好。
Microcapsule for self-repairing of set cement and preparation method thereof
一种用于水泥石自修复的微胶囊及其制备方法
WANG HAIJUAN (Autor:in) / YANG JUNHU (Autor:in) / MENG WEIDONG (Autor:in) / LI FEIPENG (Autor:in) / MA HAI (Autor:in) / QIN SHIQUN (Autor:in) / FENG MINGZHENG (Autor:in) / SUN WU (Autor:in) / LI TIEHENG (Autor:in) / ZHAO YANG (Autor:in)
26.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
Cement paste temperature control self-repairing microcapsule and preparation method thereof
| Europäisches Patentamt | 2021
Microcapsule powder for cement-based pavement self-repairing and preparation method thereof
| Europäisches Patentamt | 2024
Magnetic release microcapsule for cement concrete self-repairing and preparation method thereof
| Europäisches Patentamt | 2024
Microcapsule for self-repairing concrete and preparation method thereof
| Europäisches Patentamt | 2024
Polyurethane microcapsule self-repairing asphalt mixture and preparation method thereof
| Europäisches Patentamt | 2024