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]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 5 (09/2020) . - p. 1401–1411 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 Ignifugeants Composé 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 thermique Index. 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 coatings DOI : 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 : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34582 [article]

Réservation

Réserver ce document

Exemplaires (1)

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]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 4 (07/2023) . - p. 1353-1367 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 Ignifugeants Composé 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 thermique Index. 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 coatings DOI : 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 : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39721 [article]

Réservation

Réserver ce document

Exemplaires (1)

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)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 2 (03/2021) . - p. 447-458 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 thermique Index. 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 emulsion DOI : 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 : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35606 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
22701	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 3 / 3)