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Biomass adenosine triphosphate filler for improving the fire resistance and smoke suppression of intumescent coatings / Shaowu Ke in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 3 (05/2024)
[article]
Titre : Biomass adenosine triphosphate filler for improving the fire resistance and smoke suppression of intumescent coatings Type de document : texte imprimé Auteurs : Shaowu Ke, Auteur ; Cheng Wang, Auteur ; Yongjun Shu, Auteur ; Junfeng Yang, Auteur ; Qilin Liang, Auteur ; Qi Zhang, Auteur ; Zhitian Liu, Auteur Année de publication : 2024 Article en page(s) : p. 1049-1065 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adénosine triphosphate L’adénosine triphosphate, ou ATP, est un nucléotide formé à partir d'un nucléoside à un triphosphate. Dans la biochimie de tous les êtres vivants connus, l'ATP fournit l'énergie nécessaire aux réactions chimiques du métabolisme, à la locomotion, à la division cellulaire, ou encore au transport actif d'espèces chimiques à travers les membranes biologiques. Afin de libérer cette énergie, la molécule d'ATP est clivée, par hydrolyse, en adénosine diphosphate (ADP) et en phosphate, réaction qui s'accompagne d'une variation d'enthalpie libre standard ΔG0′ de −30,5 kJ mol−1. Les cellules régénèrent ensuite l'ATP à partir de l'ADP essentiellement de trois manières différentes : par phosphorylation oxydative dans le cadre de la respiration cellulaire, par photophosphorylation dans le cadre de la photosynthèse, et par phosphorylation au niveau du substrat au cours de certaines réactions chimiques exergoniques, par exemple au cours de la glycolyse ou du cycle de Krebs. Ainsi, le corps humain ne contient à chaque instant qu'environ 250 g d'ATP mais consomme et régénère chaque jour de l'ordre de son propre poids en ATP.
Biomatériaux
Calorimétrie
Caractérisation
Formulation (Génie chimique)
IgnifugeantsComposé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface.
Intumescence (chimie)
Résistance à l'humidité:Résistance à l'eau
Résistance à la flamme
Revêtements -- Analyse
Revêtements -- Propriétés thermiques
Revêtements en phase aqueuse
Revêtements protecteurs
Stabilité thermiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : In recent years, green environment protection has received widespread research interest. In this study, a green, bio-based compound, adenosine triphosphate (ATP), was introduced into the intumescent flame retardant system to improve the flame retardant properties of waterborne fireproof coatings. The flame retardant properties of the sample with 2 wt% ATP were characterized by fire resistance tests, thermogravimetric analysis, cone calorimetric analysis, and other tests. The results revealed that the 2 wt% ATP coating sample exhibited a reduced fire resistance temperature of approximately 73°C at 60 min compared with that of the blank sample (i.e., the unmodified sample), and the residual carbon increased from 28% to 36% at 800°C. Furthermore, the peak of the heat release rate and the total heat release for the sample with 2 wt% ATP were 7.87% and 14.10% lower than those for the blank sample, respectively. Additionally, the total smoke production and peak smoke release rate for the modified sample were 33.60% and 22.54% lower than those for the blank sample, respectively. Therefore, this work provides a good prospect for the application of bio-based ATP, which can be applied in the fabrication of fire-resistant and smoke-suppressive coatings for structural steel and also provides a simple and efficient strategy for green, bio-based flame retardants, which is expected to expand their application scope in fireproof coatings. Note de contenu : - MATERIALS AND METHODS : Materials - Solid content - Preparation of coatings - Characterization
- RESULTS AND DISCUSSION : Fire resistance analysis - Muffle burning test - Thermal stability of the coatings - Semi-quantitative calculation of synergies - Cone calorimetric analysis of the fireproof coatings - Scanning electron microscopy analysis - Raman spectroscopy of the carbon layer - X-ray photoelectron spectroscopy analysis - Infrared spectrum analysis of the carbon layer - Water tolerance of the coatings
- Flame retardant mechanism analysis
- Table 1 : The formulation of the intumescent coatingsDOI : https://doi.org/10.1007/s11998-023-00871-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00871-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41076
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 3 (05/2024) . - p. 1049-1065[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24737 - Périodique Bibliothèque principale Documentaires Disponible 24688 - Périodique Bibliothèque principale Documentaires Disponible Effect of microencapsulated ammonium polyphosphate on the durability and fire resistance of waterborne intumescent fire-retardant coatings / Zhitian Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 1 (01/2019)
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Titre : Effect of microencapsulated ammonium polyphosphate on the durability and fire resistance of waterborne intumescent fire-retardant coatings Type de document : texte imprimé Auteurs : Zhitian Liu, Auteur ; Mengqin Dai, Auteur ; Qinghua Hu ; Shi Liu ; Xiang Gao ; Fan Ren ; Qi Zhang Année de publication : 2019 Article en page(s) : p. 135-145 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Durée de vie (Ingénierie)
Encapsulation
IgnifugeantsComposé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface.
Polyphosphate d'ammonium
Revêtements en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : Large-scale addition of hydrophilic solid filler (i.e., ammonium polyphosphate) into waterborne intumescent fire-retardant coatings can cause many problems such as poor compatibility, easy absorption of moisture, and poor durability. In this work, microencapsulated ammonium polyphosphate with melamine formaldehyde resin (MFAPP) was prepared and applied in intumescent fire-retardant coatings to solve the problems mentioned. Due to the hydrophobicity of melamine formaldehyde (MF) resin, MFAPP exhibited better water resistance, thermal stability, and compatibility with polymer matrix, which was confirmed by Fourier transform infrared spectra, scanning electron microscopy (SEM), particle size test, water solubility, water contact angle, and thermogravimetric analysis (TGA). The effect of the MFAPP on durability and fire resistance of the fire-retardant coatings test were investigated by the static immersion test, fire resistance test, TGA, and SEM. Even immersed in distilled water for 12 h, the coatings containing MFAPP did not show obvious damage, indicating microencapsulation improved the water resistance of coatings. Furthermore, the fire-resistant time and thermal stability of the waterborne intumescent fire-retardant coatings were also improved remarkably by utilizing the microencapsulation of ammonium polyphosphate. Note de contenu : - EXPERIMENTAL : Materials - Preparation of samples - Fourier transform infrared (FTIR) spectra - The particle size and distribution of MFAPP and APP - Scanning electron microscopy (SEM) - Solubility in water of MFAPP and APP - Contact angle analysis - The static immersion test - Fire resistance test - Thermogravimetric analysis (TGA)
- RESULTS AND DISCUSSION : Characterization of MFAPP - Fire resistance of the coatings - Thermal properties of MFAPP and fire-retardant coating containing MFAPP - Hydrophobicity of MFAPP and coating - Fire protection and thermal properties of coatings after the static immersion test
- Table 1 : The formulation of the intumescent fire-retardant coatingsDOI : 10.1007/s11998-018-0108-x En ligne : https://link.springer.com/article/10.1007/s11998-018-0108-x Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31977
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Code-barres Cote Support Localisation Section Disponibilité 20659 - Périodique Bibliothèque principale Documentaires Disponible A facile strategy to fabricate an intumescent fire-retardant coating with improved fire resistance and water tolerance for steel structure / Siqi Huo in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)
[article]
Titre : A facile strategy to fabricate an intumescent fire-retardant coating with improved fire resistance and water tolerance for steel structure Type de document : texte imprimé Auteurs : Siqi Huo, Auteur ; Chen Wang, Auteur ; Qinghua Hu, Auteur ; Shi Liu, Auteur ; Qi Zhang, Auteur ; Zhitian Liu, Auteur Année de publication : 2020 Article en page(s) : p. 1401–1411 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Borate de zinc
Caractérisation
Combustion
Encapsulation
IgnifugeantsComposé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface.
Intumescence (chimie)
Morphologie (matériaux)
Polyphosphate d'ammonium
Résistance à l'humidité:Résistance à l'eau
Revêtements -- Propriétés thermiques
Revêtements protecteurs
Stabilité thermiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : An intumescent fire-retardant coating (IFRC) with improved fire resistance and water tolerance was prepared in this work, resulting from the introduction of microcapsuled ammonium polyphosphate (MFAPP) and zinc borate (MFBZ). The as-prepared coating exhibited great fire resistance and smoke suppression. In the cone calorimetry test, adding only 6 wt% MFBZ dramatically reduced the peak heat release rate, total heat release, and total smoke release by ~ 23.4%, ~ 54.7%, and ~ 81.1%, respectively. In addition, the water resistance and thermal stability of the coatings were also characterized. The char yield of IFRC noticeably increased to 41.7%, indicating good high-temperature stability. Besides, the IFRC showed a water contact angle of 90.1° and maintained good structure and fire resistance after being soaked by water, indicating great water resistance. The enhanced performance portfolio was mainly due to the synergistic effects of ammonium polyphosphate, pentaerythritol, melamine, and zinc borate, and the hydrophobicity of melamine–formaldehyde resin (MF). This work offers an effective approach for the preparation of waterborne intumescent fire-retardant coatings with great fire resistance and water tolerance. Note de contenu : - EXPERIMENTAL : Materials - Sample preparation - Characterization
- RESULTS AND DISCUSSION : Characterization of MFBZ - Thermal properties of coatings - Fire resistance and combustion behaviors of coatings - Char morphology - Water resistance of coatingsDOI : https://doi.org/10.1007/s11998-020-00360-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00360-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34582
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Code-barres Cote Support Localisation Section Disponibilité 22303 - Périodique Bibliothèque principale Documentaires Disponible Phosphaphenanthrene-modified zirconium phosphate nanosheets for improving fire resistance, smoke suppression and water tolerance of intumescent coatings / Cheng Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 4 (07/2023)
[article]
Titre : Phosphaphenanthrene-modified zirconium phosphate nanosheets for improving fire resistance, smoke suppression and water tolerance of intumescent coatings Type de document : texte imprimé Auteurs : Cheng Wang, Auteur ; Siqi Huo, Auteur ; Guofeng Ye, Auteur ; Zhengping Fang, Auteur ; Hao Wang, Auteur ; Zhitian Liu, Auteur Année de publication : 2023 Article en page(s) : p. 1353-1367 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anti-fumée
Caractérisation
IgnifugeantsComposé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface.
Intumescence (chimie)
Nanoparticules
Phosphate de zirconium
Polyacryliques
Résistance à la flamme
Revêtements en phase aqueuse -- Additifs
Revêtements organiques
Revêtements protecteurs
Stabilité thermiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Developing intumescent fire-retardant coatings (IFRCs) combining superior smoke suppression and water resistance is crucial for their industrial applications. Herein, novel 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO)-decorated zirconium phosphate (ZrP-D) nanosheets are synthesized and employed in the IFRCs. The ZrP-D nanosheets feature multifunctionality, which simultaneously improve the fire resistance, smoke suppression, thermal stability and water tolerance of IFRCs. Notably, introducing 3wt% ZrP-D decreases the backside temperature of IFRC from 293.9 to 166.3°C by ~ 43.4% in fire resistance test, followed by 47.9%, 33.5% and 89.4% reductions in peak heat release rate, total heat release and total smoke release. Moreover, this IFRC exhibits improved thermal stability and water tolerance, of which char yield and water contact angle reach up to 64% and 82.7°, respectively. When exposed to high-temperature flame, the ZrP-D nanoplatelets mainly function in condensed phase, which significantly increases the expansion and compactness of residual char due to the barrier and catalytic charring effects, thus suppressing the heat release and smoke diffusion. This work provides a rational design for creating intumescent fire-retardant coatings combining smoke suppression and water resistance, thus possessing broad prospects in industry. Note de contenu : - EXPERIMENTAL :
- Materials
- Fabrication of α-zirconium phosphate (α-ZrP)
- Preparation of DOPO-decorated ZrP (ZrP-D) nanosheets
- Preparation of intumescent flame-retardant coatings
- Measurements
- RESULTS AND DISCUSSION :
- Characterization of ZrP-D
- Fire resistance and smoke suppression
- Thermal stability
- Fire-retardant mechanism
- Water tolerance
- Table 1 : The compositions of intumescent fire-retardant coatings
- Table 2 : Contents of C, O, N, P, Si, and Zr in ZrP-D
- Table 3 : Detailed results obtained from fire resistance and cone calorimeter tests
- Table 4 : Thermogravimetric properties of the intumescent fire-retardant coatingsDOI : https://doi.org/10.1007/s11998-022-00749-0 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00749-0.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39721
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Code-barres Cote Support Localisation Section Disponibilité 24153 - Périodique Bibliothèque principale Documentaires Disponible Recycle of magnesium alloy scrap for improving fire resistance, thermal stability, and water tolerance of intumescent fire-retardant coatings / Cheng Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)
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Titre : Recycle of magnesium alloy scrap for improving fire resistance, thermal stability, and water tolerance of intumescent fire-retardant coatings Type de document : texte imprimé Auteurs : Cheng Wang, Auteur ; Siqi Huo, Auteur ; Shi Liu, Auteur ; Qinghua Hu, Auteur ; Qi Zhang, Auteur ; Zhitian Liu, Auteur Année de publication : 2021 Article en page(s) : p. 447-458 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Eau
Emulsions
Formulation (Génie chimique)
Intumescence (chimie)
Magnésium -- Alliages
Polyacrylates
Recyclage (déchets, etc.)
Résistance à l'humidité:Résistance à l'eau
Revêtements protecteurs
Stabilité thermiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : The rapid development and widespread application of magnesium alloy bring about a significant amount of magnesium alloy scrap. Thus, we offer a feasible and simple way to realize the recycling of magnesium scrap in this work, applying it as a synergist in the intumescent fire-retardant coatings for steel structure. With the introduction of magnesium scrap, the fire resistance, thermal stability, and water tolerance of the as-prepared coatings significantly improved. According to ASTM E119 standards, the fire resistance of coatings was investigated in our laboratory. Adding only ~ 0.48 wt% of the scrap decreased the backside temperature of the coated steel from 310°C to 171°C, with a ~ 44.8% reduction, indicating obvious synergy. Moreover, the coating containing ~ 0.48 wt% scrap exhibited excellent thermal stability and water resistance, and its char yield at 800°C and water contact angle reached up to 27% and 80.6°, respectively. Based on the analysis of flame-retardant mechanism, the scrap and intumescent fire-retardant system jointly promoted the formation of an intumescent and compact char residue, thus suppressing the heat transfer and protecting the steel. Hence, using magnesium alloy scrap as a synergist contributed to realizing the recycling of waste and providing practical intumescent fire-retardant coatings for structural steel. Note de contenu : - EXPERIMENTAL : Materials - Preparation of scrap-modified core–shell polyacrylate emulsions - Preparation of intumescent fire-retardant coatings - Characterizations
- RESULTS AND DISCUSSION : Characterization of magnesium alloy scrap - Stability of the scrap-modified core–shell emulsion - Fire resistance of coatings - Influence of scrap on the char residue - Thermal stability of coatings - Water tolerance of coatings
- Table 1 : The formulation of core–shell polyacrylate emulsion
- Table 2 : The compositions of intumescent fire-retardant coatings
- Table 3 : Contents of C, O, Mg, Al, Si, and Ca in magnesium alloy scrap
- Table 4 : The influence of scrap on the stability of emulsionDOI : https://doi.org/10.1007/s11998-020-00413-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00413-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35606
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Code-barres Cote Support Localisation Section Disponibilité 22701 - Périodique Bibliothèque principale Documentaires Disponible