Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of CO2 responsive gel material for cement stone microcrack self-repairing
The invention relates to a preparation method of a CO2 responsive gel material for cement stone microcrack self-repairing, which comprises the following steps: (1) uniformly mixing an organic monomer and a CO2 responsive monomer, dissolving in deionized water, and adjusting the pH value of the solution to 6-8; the organic monomer is an organic acid containing an unsaturated group, and the CO2 responsive monomer is a tertiary amine substance containing an unsaturated group; (2) slowly adding an initiator and a cross-linking agent into the solution, raising the temperature of a reaction system to 55-80 DEG C, and reacting for 6-10 hours; (3) crushing the product into particles, placing the particles in deionized water to remove unreacted monomers, and then placing the particles in a metal chloride solution for secondary crosslinking; (4) putting the gel particles into deionized water, and removing non-crosslinked metal chloride; and (5) filtering, drying and crushing the product. The raw materials are easy to obtain, the reaction conditions are easy to control, and the synthesized gel material has CO2 responsiveness and shows a wide application prospect in the aspect of repairing cement sheath microcracks.
本发明涉及用于水泥石微裂缝自修复的CO2响应性凝胶材料的制备方法，包括：（1）将有机单体、CO2响应性单体混合均匀，溶解在去离子水中，调节溶液的PH值为6~8；所述有机单体为含有不饱和基团的有机酸，所述CO2响应性单体为含有不饱和基团的叔胺类物质；（2）向溶液中缓慢加入引发剂、交联剂，将反应体系温度升至55～80℃，反应6～10h；（3）将产物破碎成颗粒，置于去离子水中除去未反应的单体，再将其置于金属氯化物溶液中，发生二次交联；（4）将凝胶颗粒置于去离子水中，除去未交联的金属氯化物；（5）将产物过滤、干燥、粉碎。本发明原料易得，反应条件易于控制，合成的凝胶材料具有CO2响应性，在修复水泥环微裂缝方面展现出广阔的应用前景。
Preparation method of CO2 responsive gel material for cement stone microcrack self-repairing
The invention relates to a preparation method of a CO2 responsive gel material for cement stone microcrack self-repairing, which comprises the following steps: (1) uniformly mixing an organic monomer and a CO2 responsive monomer, dissolving in deionized water, and adjusting the pH value of the solution to 6-8; the organic monomer is an organic acid containing an unsaturated group, and the CO2 responsive monomer is a tertiary amine substance containing an unsaturated group; (2) slowly adding an initiator and a cross-linking agent into the solution, raising the temperature of a reaction system to 55-80 DEG C, and reacting for 6-10 hours; (3) crushing the product into particles, placing the particles in deionized water to remove unreacted monomers, and then placing the particles in a metal chloride solution for secondary crosslinking; (4) putting the gel particles into deionized water, and removing non-crosslinked metal chloride; and (5) filtering, drying and crushing the product. The raw materials are easy to obtain, the reaction conditions are easy to control, and the synthesized gel material has CO2 responsiveness and shows a wide application prospect in the aspect of repairing cement sheath microcracks.
本发明涉及用于水泥石微裂缝自修复的CO2响应性凝胶材料的制备方法，包括：（1）将有机单体、CO2响应性单体混合均匀，溶解在去离子水中，调节溶液的PH值为6~8；所述有机单体为含有不饱和基团的有机酸，所述CO2响应性单体为含有不饱和基团的叔胺类物质；（2）向溶液中缓慢加入引发剂、交联剂，将反应体系温度升至55～80℃，反应6～10h；（3）将产物破碎成颗粒，置于去离子水中除去未反应的单体，再将其置于金属氯化物溶液中，发生二次交联；（4）将凝胶颗粒置于去离子水中，除去未交联的金属氯化物；（5）将产物过滤、干燥、粉碎。本发明原料易得，反应条件易于控制，合成的凝胶材料具有CO2响应性，在修复水泥环微裂缝方面展现出广阔的应用前景。
Preparation method of CO2 responsive gel material for cement stone microcrack self-repairing
用于水泥石微裂缝自修复的CO2响应性凝胶材料的制备方法
CHENG XIAOWEI (Autor:in) / XIE TING (Autor:in) / REN QIANG (Autor:in) / LUO WENLI (Autor:in) / ZHANG YE (Autor:in) / MA YONG (Autor:in) / LI MINGZE (Autor:in) / LI PANPAN (Autor:in) / ZHENG YOUZHI (Autor:in) / MEI KAIYUAN (Autor:in)
28.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
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
/
C04B
Kalk
,
LIME
/
C08J
Verarbeitung
,
WORKING-UP
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
/
C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
,
Massen auf Basis makromolekularer Verbindungen
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