High-Strength, Waterproof, Corrosion-Resistant Nano-Silica Carbon Nanotube Cementitious Composites
This study aims to prepare a nano-silica-carbon nanotube (NS-CNT) elastic composite using NS (nano-silica), CNTs (carbon nanotube), and (D<sub>3</sub>F) trifluoropropyltrimethoxysilane. The results show that the activated NS could promote the hydrolysis of D<sub>3</sub>F. Pol...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-08-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/17/3737 |
| _version_ | 1797555949762772992 |
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| author | Hao Li Yongmin Shi |
| author_facet | Hao Li Yongmin Shi |
| author_sort | Hao Li |
| collection | DOAJ |
| description | This study aims to prepare a nano-silica-carbon nanotube (NS-CNT) elastic composite using NS (nano-silica), CNTs (carbon nanotube), and (D<sub>3</sub>F) trifluoropropyltrimethoxysilane. The results show that the activated NS could promote the hydrolysis of D<sub>3</sub>F. Polymerization products of nano-silica and D<sub>3</sub>F are uniformly adhered onto the surfaces of CNTs, thereby forming a NS-CNT composite. The composite is composed of irregular ellipsoids of 3–12 μm in length and 2–10 μm in diameter. The activated NS-CNT composite material effectively promotes the further hydration of (CaOH)<sub>2</sub> in the cement to form hydrated calcium silicate, and further dehydration–condensation between the surface hydroxyl group of the composite material and the inherent hydroxyl group of (CaOH)<sub>2</sub>. The cementitious composite-based composites containing the activated NS-CNT exhibit high mechanical strengths, high water resistances, and good durability and corrosion resistance. The chemical characterizations reveal the morphology, nucleation mode of the composite, and its influence on the hydration structure and products of cementitious composite. |
| first_indexed | 2024-03-10T16:54:53Z |
| format | Article |
| id | doaj.art-592c6553e1ea4350bddac968b4753929 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T16:54:53Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-592c6553e1ea4350bddac968b47539292023-11-20T11:10:11ZengMDPI AGMaterials1996-19442020-08-011317373710.3390/ma13173737High-Strength, Waterproof, Corrosion-Resistant Nano-Silica Carbon Nanotube Cementitious CompositesHao Li0Yongmin Shi1Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, ChinaShaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, ChinaThis study aims to prepare a nano-silica-carbon nanotube (NS-CNT) elastic composite using NS (nano-silica), CNTs (carbon nanotube), and (D<sub>3</sub>F) trifluoropropyltrimethoxysilane. The results show that the activated NS could promote the hydrolysis of D<sub>3</sub>F. Polymerization products of nano-silica and D<sub>3</sub>F are uniformly adhered onto the surfaces of CNTs, thereby forming a NS-CNT composite. The composite is composed of irregular ellipsoids of 3–12 μm in length and 2–10 μm in diameter. The activated NS-CNT composite material effectively promotes the further hydration of (CaOH)<sub>2</sub> in the cement to form hydrated calcium silicate, and further dehydration–condensation between the surface hydroxyl group of the composite material and the inherent hydroxyl group of (CaOH)<sub>2</sub>. The cementitious composite-based composites containing the activated NS-CNT exhibit high mechanical strengths, high water resistances, and good durability and corrosion resistance. The chemical characterizations reveal the morphology, nucleation mode of the composite, and its influence on the hydration structure and products of cementitious composite.https://www.mdpi.com/1996-1944/13/17/3737silane coupling agentnano-silicacarbon nanotubecomposite structurecementitious composite |
| spellingShingle | Hao Li Yongmin Shi High-Strength, Waterproof, Corrosion-Resistant Nano-Silica Carbon Nanotube Cementitious Composites Materials silane coupling agent nano-silica carbon nanotube composite structure cementitious composite |
| title | High-Strength, Waterproof, Corrosion-Resistant Nano-Silica Carbon Nanotube Cementitious Composites |
| title_full | High-Strength, Waterproof, Corrosion-Resistant Nano-Silica Carbon Nanotube Cementitious Composites |
| title_fullStr | High-Strength, Waterproof, Corrosion-Resistant Nano-Silica Carbon Nanotube Cementitious Composites |
| title_full_unstemmed | High-Strength, Waterproof, Corrosion-Resistant Nano-Silica Carbon Nanotube Cementitious Composites |
| title_short | High-Strength, Waterproof, Corrosion-Resistant Nano-Silica Carbon Nanotube Cementitious Composites |
| title_sort | high strength waterproof corrosion resistant nano silica carbon nanotube cementitious composites |
| topic | silane coupling agent nano-silica carbon nanotube composite structure cementitious composite |
| url | https://www.mdpi.com/1996-1944/13/17/3737 |
| work_keys_str_mv | AT haoli highstrengthwaterproofcorrosionresistantnanosilicacarbonnanotubecementitiouscomposites AT yongminshi highstrengthwaterproofcorrosionresistantnanosilicacarbonnanotubecementitiouscomposites |