Construction of durable flame-retardant and robust superhydrophobic coatings on cotton fabrics for water-oil separation application

Guo, Wenwen; Wang, Xin; Huang, Jiali; Zhou, Yifan; Cai, Wei; Wang, Junling; Song, Lei; Hu, Yuan

doi:10.1016/j.cej.2020.125661

Cited by 181 publications

(62 citation statements)

References 52 publications

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“…The wettability of a material is not only connected to its surface chemical properties but also related to its surface morphology. 28 Appropriate roughness in the surface of materials can increase the hydrophobic performance according to the Wenzel model. 29 The structures and the surface morphology of the MS powders after modification with AlCl 3 solution were observed by SEM, and the images were exhibited in Figure 5.…”

Section: Morphology Of Modified Ms Powdersmentioning

confidence: 99%

Hydrophobically modified melamine‐formaldehyde sponge used for conformance control and water shutoff during oil production

Luo

Feng

2021

J of Applied Polymer Sci

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Polymer or polymer gels have been widely used to control excessive water during oil production by homogenizing injection profile and reducing water cut in the produced fluids. However, the gels used are generally unable to selectively minimize water production, and face the challenge of syneresis of gels under high temperature and high salinity environment. In this work, melamineformaldehyde sponge was modified with AlCl 3 solution, rendering a transition from hydrophilic to hydrophobic state with a water contact angle of 130 on the surface of the modified product. Filtration results show that mineral oil and water can be selectively separated with the hydrophobically modified sponge powders. Simulated water shutoff experiments demonstrated the blockage efficiency against water was 30% higher than that against oil, and the oil production was increased 7.4% after blocking. The parallel profile control tests confirmed that the fraction flow of high permeable channel decreased about 75%, accompanied with 60% rise of oil recovery factor. These results indicated that such hydrophobic materials can significantly reduce excessive water production, and this work provided a new idea to offer a low-cost hydrophobic material for conformance control and water shutoff during oil production.

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Section: Morphology Of Modified Ms Powdersmentioning

confidence: 99%

Hydrophobically modified melamine‐formaldehyde sponge used for conformance control and water shutoff during oil production

Luo

Feng

2021

J of Applied Polymer Sci

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“…Phytic acid is thermally degraded to pyrophosphoric acid to catalyze the carbonization of cellulosic materials. 14 The PA/APTES/HDTMS/ SiO 2 -coating can quickly form a stable char layer on the surface of samples. The formed char layer can act as a protective physical barrier to limit the heat transfer between the combustion zone and the samples below and the diffusion of volatilized pyrolysis products.…”

Section: Flame-retardant Mechanismmentioning

confidence: 99%

Green fabrication of flame retardant and superhydrophobic materials with application in oil‐water separation

Luo

Wang

et al. 2021

Polymers for Advanced Techs

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Flame-retardant materials with superwettability have received broad attention and research in the field of oil-water separation in recent years. However, it remains big challenging to fabricate flame-retardant and superwettable materials in terms of the complexity and environmental performance. Herein, a non-fluorinated coating containing flame retardants phytic acid/3-aminopropyltriethoxysilane and silica micronparticle/hexadecyltrimethoxysilane was developed. The performance of the coated samples is evaluated by thermogravimetric analysis, limiting oxygen index (LOI), cone calorimetry, and, water contact angle tests. The percentage of residue at 800 C for coated samples (cotton fabric, absorbent cotton, filter paper, cottonwood, packing cardboard) was reduced by 47.6%, 42.2%, 45.5%, 53.2%, and 50.8%, respectively. However, their control samples reduced by 87.4%, 84.6%, 88.4%, 77.2%, and 72.2%, respectively, under the same conditions. The percentage of residue at 800 C for coated samples is much higher than that of the pristine samples. The coated cotton fabric showed excellent flame retardant and superhydrophobic properties. Specifically, the coated cotton fabrics exhibited self-extinguishing properties in the flame burning tests, and the LOI increased significantly from 17.7% to 50.8%. Furthermore, the peak heat release rate and the total heat release values of the coated cotton fabric were significantly declined by 83.4% and 83.6% compared to untreated cotton fabrics, respectively. Additionally, due to its super-hydrophobic surface, the coated cotton fabric exhibited super-strong self-cleaning ability and waterproof performance. The coated cotton fabrics also showed good organic solvent/oil and water separation capabilities while reducing the risk of fire.

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“…Utilization of flammable materials such as plastics, oil based paints, use of cotton or storage of highly volatile chemicals seem to be a cause in many instances. Alternatively, non-flammable paints, coatings, fabrics, and construction materials like nanocomposite materials should be used [23][24][25]. Research on flame retardant materials and nanocomposites are also considered to be one of the alternatives against fire protection and evacuation management systems.…”

Section: Comprehensive Viewsmentioning

confidence: 99%

Introductory Chapter: Fire Prevention Strategies

Ghosal¹,

Zafar²

2020

Fire Safety and Management Awareness

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Construction of durable flame-retardant and robust superhydrophobic coatings on cotton fabrics for water-oil separation application

Cited by 181 publications

References 52 publications

Hydrophobically modified melamine‐formaldehyde sponge used for conformance control and water shutoff during oil production

Hydrophobically modified melamine‐formaldehyde sponge used for conformance control and water shutoff during oil production

Green fabrication of flame retardant and superhydrophobic materials with application in oil‐water separation

Introductory Chapter: Fire Prevention Strategies

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