A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-dispersion organic-inorganic composite powder water repellent and preparation method thereof
The invention belongs to the technical field of ocean building engineering, and discloses a high-dispersion organic-inorganic composite powder water repellent and a preparation method thereof. The high-dispersion organic-inorganic composite powder water repellent is mainly composed of the following components in percentage by mass: 45-55% of an inorganic porous material, 40-50% of organosilane, 3-6% of an alcohol sealant and 0.5-3% of a surfactant. The method comprises the following steps: carrying out microwave irradiation and acid treatment on an inorganic porous material, adding organosilane, a surfactant and water in a vacuum environment, and carrying out uniform stirring; and keeping a vacuum environment, adding an alcohol sealant, and successively carrying out uniform stirring, filtering and drying to obtain the required water repellent. The apparent density of the water repellent is 1.8-2.1 g/cm<3>, so the hydrophobicity of cement is improved, and the erosion resistance of the cement is improved. The contact angle of modified cement paste is 100-135 degrees, and the diffusion coefficient of chloride ions is 0.1-0.3 * 10<-12> m<2>/s.
本发明属于海洋建筑工程的技术领域，公开了一种高分散有机‑无机复合粉末憎水剂及其制备方法。所述高分散有机‑无机复合粉末憎水剂主要由以下按质量百分数计的组分组成：无机多孔材料45～55％，有机硅烷40～50％，醇类密封剂3～6％，表面活性剂0.5～3％。方法：将无机多孔材料微波辐照，酸处理，在真空环境中，加入有机硅烷、表面活性剂与水搅拌均匀；保持真空环境，加入醇类密封剂搅拌均匀，过滤，干燥，获得所需憎水剂。本发明的憎水剂表观密度为1.8～2.1g/cm3，改善了水泥的憎水性，提高了水泥抗侵蚀能力。改性水泥浆体的接触角为100～135°，氯离子扩散系数0.1～0.3×10‑12m2/s。
High-dispersion organic-inorganic composite powder water repellent and preparation method thereof
The invention belongs to the technical field of ocean building engineering, and discloses a high-dispersion organic-inorganic composite powder water repellent and a preparation method thereof. The high-dispersion organic-inorganic composite powder water repellent is mainly composed of the following components in percentage by mass: 45-55% of an inorganic porous material, 40-50% of organosilane, 3-6% of an alcohol sealant and 0.5-3% of a surfactant. The method comprises the following steps: carrying out microwave irradiation and acid treatment on an inorganic porous material, adding organosilane, a surfactant and water in a vacuum environment, and carrying out uniform stirring; and keeping a vacuum environment, adding an alcohol sealant, and successively carrying out uniform stirring, filtering and drying to obtain the required water repellent. The apparent density of the water repellent is 1.8-2.1 g/cm<3>, so the hydrophobicity of cement is improved, and the erosion resistance of the cement is improved. The contact angle of modified cement paste is 100-135 degrees, and the diffusion coefficient of chloride ions is 0.1-0.3 * 10<-12> m<2>/s.
本发明属于海洋建筑工程的技术领域，公开了一种高分散有机‑无机复合粉末憎水剂及其制备方法。所述高分散有机‑无机复合粉末憎水剂主要由以下按质量百分数计的组分组成：无机多孔材料45～55％，有机硅烷40～50％，醇类密封剂3～6％，表面活性剂0.5～3％。方法：将无机多孔材料微波辐照，酸处理，在真空环境中，加入有机硅烷、表面活性剂与水搅拌均匀；保持真空环境，加入醇类密封剂搅拌均匀，过滤，干燥，获得所需憎水剂。本发明的憎水剂表观密度为1.8～2.1g/cm3，改善了水泥的憎水性，提高了水泥抗侵蚀能力。改性水泥浆体的接触角为100～135°，氯离子扩散系数0.1～0.3×10‑12m2/s。
High-dispersion organic-inorganic composite powder water repellent and preparation method thereof
一种高分散有机-无机复合粉末憎水剂及其制备方法
GUO YIQUN (author) / ZHANG TONGSHENG (author) / DU JUNPENG (author) / WANG WEI (author) / MA TING (author) / WEI JIANGXIONG (author) / YU QIJUN (author)
2021-04-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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