In-situ polymerized zinc phytate chelated Si-C-P geopolymer hybrid coating constructed by incorporating chitosan oligosaccharide and DOPO for flame-retardant plywood

Zhang, HongJi; Wang, YaChao; Li, Fan; Zhao, JiangPing

doi:10.1016/j.conbuildmat.2023.132416

Cited by 5 publications

(2 citation statements)

References 53 publications

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“…Pereyra et al [17] chose nanostructured self-curing inorganic silicates (high silica-to-alkali ratio) as the film-forming material, and the results showed that the non-polluting coating system has excellent corrosion resistance and good high-temperature stability. Zinc phytate (ZnPA) chelated geopolymer and in situ polymerized chitosan oligosaccharide (COS)/DOPO were explored as a challenging and exciting flame-retardant organic-inorganic hybrid coating using the sol-gel method, and the results showed that ZnPA addition (0.5 wt%) enhanced the flame-retardant properties of geopolymer coatings [18]. Ng et al [19] highlighted the thermal decomposition and fire-protective behavior of two polymer-based coatings for concrete, which creates a steep temperature gradient between the coating surface and the coating-concrete interface.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of a Multifunctional Road Marking Coating for Tunnels Based on Nano SiO2 and TiO2 Modifications

Quan,

Yang,

et al. 2024

Buildings

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Multifunctional road marking coatings with the functions of high-temperature stability, degradation of exhaust gas, and self-cleaning are of great significance for the safe operation and environmental protection of tunnels. This article uses active acrylic resin and an organosilicon hydrophobic agent as the base material, selects expanded vermiculite and glass microspheres as insulation fillers, and uses ammonium polyphosphate, pentaerythritol, melamine, and aluminum hydroxide as high-thermal-stability systems to prepare a two-component road marking coating base material. Then, nano SiO2 and modified nano TiO2 are added as modifiers to prepare a multifunctional road marking coating for tunnels. The physical and chemical properties of multifunctional road marking coatings are evaluating based on laboratory tests including thermogravimetry and derivative thermogravimetry, differential scanning calorimetry, infrared spectroscopy, scanning electron microscopy, exhaust degradation, and contact angle tests. The results indicate that the developed multifunctional road marking coating effectively reduces the thermal conductivity of the carbon layer through physical changes in the flame retardant system and the heat resistance formed by the high breaking bond energy of nano SiO2 during the combustion process. It forms a ceramic-like structure of titanium pyrophosphate with nano TiO2 that is beneficial for improving flame retardancy without generating harmful volatile gases and has good flame retardant properties. N–V co-doping reduces the bandgap of TiO2, broadens the absorption range of visible light by nano TiO2, improves the catalytic efficiency of visible light, and achieves the degradation efficiency of the four harmful components NOx, HC, CO, and CO2 in automotive exhaust by 23.4%, 8.3%, 2.5%, and 2.9%, respectively. The solid–liquid phase separation in the multifunctional road marking coating in the tunnel causes the formation and accumulation of nano SiO2 and TiO2 particles on the coating surface, resulting in a microstructure similar to the “micro–nano micro-convex” on the lotus leaf surface and making a water droplet contact angle of 134.2° on the coating surface.

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Section: Introductionmentioning

confidence: 99%

Performance Evaluation of a Multifunctional Road Marking Coating for Tunnels Based on Nano SiO2 and TiO2 Modifications

Quan,

Yang,

et al. 2024

Buildings

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“…can also be added to obtain the required properties [5,6,[9][10][11][12][13][14][15][16][17][19][20][21][22][23][24][25]. In addition, geopolymeric materials can also be reinforced by adding polymers in the production of hybrid materials [26][27][28][29][30][31]. These materials have been developed following the principles of "Green Chemistry", as they have been obtained by synthesis from a wide variety of raw materials, including mineral by-products and recycled products, thus reducing energy demand and environmental impact during their production [19,20,25,32].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Geopolymeric Materials from Industrial Kaolins, with Variable Kaolinite Content and Alkali Silicates Precursors

Martínez-Martínez,

Bouguermouh,

Bouzidi

et al. 2024

Materials

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In the present work, the development of geopolymeric materials with Na or K based on industrial kaolin samples, with variable kaolinite content and alkaline silicates, is studied. XRF, XRD, FTIR and SEM-EDS have been used as characterization techniques. Three ceramic kaolin samples, two from Algeria and one from Charente (France), have been considered. In particular, chemical and mineralogical characterization revealed elements distinct of Si and Al, and the content of pure kaolinite and secondary minerals. Metakaolinite was obtained by grinding and sieving raw kaolin at 80 μm and then by thermal activation at 750 °C for 1 h. This metakaolinite has been used as a base raw material to obtain geopolymers, using for this purpose different formulations of alkaline silicates with NaOH or KOH and variable Si/K molar ratios. The formation of geopolymeric materials by hydroxylation and polycondensation characterized with different Si/Al molar ratios, depending on the original metakaolinite content, has been demonstrated. Sodium carbonates have been detected by XRD and FTIR, and confirmed by SEM-EDS, in two of these geopolymer materials being products of NaOH carbonation.

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Aldehyde-free and bio-based durable coatings for cellulose fabrics with high flame retardancy, antibacteria and well wearing performance

Kang,

He,

Cui

et al. 2024

International Journal of Biological Macromolecules

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In-situ polymerized zinc phytate chelated Si-C-P geopolymer hybrid coating constructed by incorporating chitosan oligosaccharide and DOPO for flame-retardant plywood

Cited by 5 publications

References 53 publications

Performance Evaluation of a Multifunctional Road Marking Coating for Tunnels Based on Nano SiO2 and TiO2 Modifications

Performance Evaluation of a Multifunctional Road Marking Coating for Tunnels Based on Nano SiO2 and TiO2 Modifications

Preparation of Geopolymeric Materials from Industrial Kaolins, with Variable Kaolinite Content and Alkali Silicates Precursors

Aldehyde-free and bio-based durable coatings for cellulose fabrics with high flame retardancy, antibacteria and well wearing performance

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