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PU-coating performance of bio-based hyperbranched alkyd resin on mild steel and wood substrate / Amardip M. Patil in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 3 (05/2021)
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[article]
Titre : PU-coating performance of bio-based hyperbranched alkyd resin on mild steel and wood substrate Type de document : texte imprimé Auteurs : Amardip M. Patil, Auteur ; Ramanand N. Jagtap, Auteur Année de publication : 2021 Article en page(s) : p. 741-752 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Amides
Biopolymères
Bois -- Revêtements protecteurs
Caractérisation
Enrobage (technologie)
Essais (technologie)
Essais de résilience
Essais dynamiques
Huile de ricin et constituants
Métaux -- Revêtements protecteurs
Polyalkydes
Polymères ramifiés
Polyols
PolyuréthanesIndex. décimale : 667.9 Revêtements et enduits Résumé : In the present research article, a hyperbranched alkyd resin was synthesized by using bio-based material (castor oil based fatty amide) and pyromellitic dianhydride. The synthesized hyperbranched alkyd resin was characterized by nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) spectroscopy. The polyurethanes (PMFAI and PMFAM) were prepared from hyperbranched alkyd resin and diisocyanates [isophorone diisocyanates (IPDI) and methylene diphenyl diisocyanate (MDI)] maintaining the OH:NCO ratio of 1:1.2. These polyurethanes were used in coating applications on mild steel and wood panels. The performance of cured polyurethane coatings was studied in terms of crosscut adhesion, impact resistance, gloss, scratch hardness, and chemical resistance. The chemical resistance test was performed by immersion method in 2 N HCl, 2 N NaOH, 3.5% NaCl solution, xylene, and water. The corrosion rate and anticorrosion efficiency of the coating panels were determined by a potentiostat. From a study of coating properties, it was found that the PMFAI and PMFAM exhibited better coating properties as compared to reported linear alkyd polyurethanes. The stain test of coatings was performed on wood panels. The thermal behavior of the coatings was determined by thermogravimetric analyzer. The surface morphology of coating films was examined by scanning electron microscopy and atomic force microscopy. It was found that the coating properties of hyperbranched alkyd resin were excellent as compared to linear alkyd resin polyurethanes. Note de contenu : - MATERIALS
- EXPERIMENTAL : Synthesis of fatty amide from castor oil - Synthesis of hyperbranched alkyd resin - Preparation of mild steel panel and wood panels - Preparation of polyurethane coatings from alkyd resin - Characterization - Coating properties
- RESULTS AND DISCUSSION : Acid and hydroxyl values analysis - FTIR and NMR study - Coating properties - Stain test - Immersion tests - Electrochemical study - Thermal study - Surface morphology of coatings
- Table 1 Coating performance of coated mild steel panels
- Table 2 Stain test of coatings on wood
- Table 3 Immersion test of coatings
- Table 4 Electrochemical properties of coatings
- Table 5 Thermal properties of coatingsDOI : https://doi.org/10.1007/s11998-020-00438-w En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00438-w.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35926
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 3 (05/2021) . - p. 741-752[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22785 - Périodique Bibliothèque principale Documentaires Disponible PU nanofibrous membrane with gradient laminated structure for efficient sound absorption / Yuepeng Xu in MAN-MADE FIBERS INTERNATIONAL, Vol. 74, N° 1 (2024)
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Titre : PU nanofibrous membrane with gradient laminated structure for efficient sound absorption Type de document : texte imprimé Auteurs : Yuepeng Xu, Auteur ; Shousen Zhao, Auteur ; Yanru Zhang, Auteur ; Zhaolin Liu, Auteur ; Haoyue Li, Auteur Année de publication : 2024 Article en page(s) : p. 31-34 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Composites
Dioxyde de manganèse
Electrofilature
Isolation acoustique
Membranes (technologie)
Nanofibres
Polyuréthanes
Revêtement monocouche
Son -- AbsorptionIndex. décimale : 677.4 Textiles artificiels Résumé : In order to solve the problem of noise pollution, polyurethane (PU) nanofibrous membranes with different structures were prepared by electrospinning. The influence of layer number, single-layer basis weight arrangement and the concentration of MnO2 on the sound absorption performance was investigated. The results show that the sound absorption coefficient of the PU laminated nanofibrous membranes enhances initially and then declines with the increase of the layer numbers, reaching the maximum when the layer number is 8. The overall sound absorption performance of the PU nanofibrous membranes with increasing single-layer basis weight arrangement is better than that of the membranes with decreasing single-layer basis weight arrangement. When the concentration of Mn02 is 2 wt.%, the sound absorption coefficient of the MnO2/PU composite membrane achieves its peak value due to the fine fiber diameter and high porosity. Note de contenu : - EXPERIMENTAL : Preparation of PU single-layer nanofibrous membranes - Preparation of PU laminated nanofibrous membranes - Preparation of PU gradient laminated nano-fibrous membranes - Prepration of MNO2/PU composite nanofibrous membranes - Characterization
- RESULTS AND DISCUSSION : Sound absorption performance of the PU laminated nanofibrous membranes - Sound absorption performance of the PU gradient laminated nanofibrous membranes - Sound absorption performance of the MnO2/PU composite nanofibrous membranes - Structure parameters of the MnO2/PU composite nanofibrous membranesEn ligne : https://drive.google.com/file/d/1tThJ8v10TS4X2CKtPHi6xixBIEla06wa/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40607
in MAN-MADE FIBERS INTERNATIONAL > Vol. 74, N° 1 (2024) . - p. 31-34[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24534 - Périodique Bibliothèque principale Documentaires Disponible Purification and characterization of three commercial phenylazoaniline disperse dyes / Gisela A. Umbuzeiro in COLORATION TECHNOLOGY, Vol. 133, N° 6 (12/2017)
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Titre : Purification and characterization of three commercial phenylazoaniline disperse dyes Type de document : texte imprimé Auteurs : Gisela A. Umbuzeiro, Auteur ; Malgorzata Szymczyk, Auteur ; Min Li, Auteur ; Yufei Chen, Auteur ; Josiane A. S. Vendemiatti, Auteur ; Anjaina F. de Albuquerque, Auteur ; Amanda dos Santos, Auteur ; Bianca de S. Maselli, Auteur ; Fábio Kummrow, Auteur ; Nelson R. Vinueza, Auteur ; Harold S. Freeman, Auteur Année de publication : 2017 Article en page(s) : p. 513-518 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Chromatographie
Colorants -- Analyse
Colorants -- Toxicologie
Colorants azoïques
Colorants dispersésCatégorie de colorants très peu solubles dans l'eau, utilisés à l'origine comme colorants pour l'acétate, et qui généralement sont appliqués sous forme de suspensions aqueuses de faible concentration.Les colorants dispersés sont largement utilisés dans la teinture de la plupart des fibres manufacturées, surtout le polyester.
Ecotoxicologie
Produits chimiques -- PurificationIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Although tons of disperse dyes are used worldwile, little information on their ecotoxicity is available. While in silico models can be used to predict their ecotoxicity, experimental results from Daphnia can show significantly higher toxicity than predicted. Thus the objective of this work was to extend the knowledge base in this area by evaluating the ecotoxicity of three widely used disperse dyes and comparing the results to predicted values. Bearing in mind that generating ecotoxicity data on azo disperse dyes is complicated because they are not readily found as homogeneous compounds, we employed chromatographic methods to purify three commercially dyes C.I. Disperse Violet 93, Blue 291, and Blue 373 already found in the aquatic environment. No acute toxicity was observed for Daphnia similis. These results seems to be in general agreement when compared with ECOSAR predicted values. We hypothesize that differences in Kow values could explain the variations in results. Note de contenu : - EXPERIMENTAL : Materials and measurements - Ecotoxicity testing
- RESULTS AND DISCUSSION : Dye purification and characterisation - Ecotoxicity testingDOI : 10.1111/cote.12307 En ligne : https://drive.google.com/file/d/1DM9f8_4OBpVPTIJh6QGxPWG852D-7dyR/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29504
in COLORATION TECHNOLOGY > Vol. 133, N° 6 (12/2017) . - p. 513-518[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19395 - Périodique Bibliothèque principale Documentaires Disponible PVDF nanofibers effectively capturing PM2.5 and releasing anions / Liu Zhaolin in CHEMICAL FIBERS INTERNATIONAL, Vol. 69, N° 2 (06/2019)
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Titre : PVDF nanofibers effectively capturing PM2.5 and releasing anions Type de document : texte imprimé Auteurs : Liu Zhaolin, Auteur Année de publication : 2019 Article en page(s) : p. 100-101 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anions
Caractérisation
Filtration
Morphologie (matériaux)
Nanofibres
Polyfluorure de vinylidèneIndex. décimale : 677.4 Textiles artificiels Résumé : Polyvinylidene fluoride (PVDF) nanofibers doped with anion powder (AP) were prepared by electrospinning to efficiently sieve PM 2.5 and robustly release anions. Fiber morphologies formed by subtly regulating the mass fraction of AP were observed using the scanning electron microscope (SEM), and the air filtration property and the anion release capacity of the PVDF nanofibers were investigated. The results show that the average fiber diameter decreases rapidly then increases with the increasing AP mass fraction. AP particles aggregate on fiber surface when the mass fraction of AP reaches 9 wt.%.The filtration efficiency and the airflow resistance rise initially and then drop. The quality factor achieves the maximum and the anion release amount enhances significantly when the mass fraction of AP is 3 wt%. Note de contenu : - EXPERIMENTAL : Materials - Preparation of PVDF nanofibers - Characterization
- RESULTS AND DISCUSSION : Morphology of the PVDF nanofibers - Air filtration property of the PVDF nanofibers - Anion release capacity of the PVDF nanofibers
- Fig. 1 : SEM images of the PVDF nanofi bers The mass fraction of AP is respectively : a) 0 wt.%, b) 3 wt.%, c) 6 wt.% and d) 9 wt.%
- Fig. 2 : Air filtration property of the PVDF nanofibers at various mass fraction of AP. a) Filtration efficiency and airflow resistance, b) quality factor
- Fig. 3 : Anion release amount of the PVDF nanofibers at various mass fraction of AP
- Table : Solution properties and average diameter of the PVDF nanofibers
En ligne : https://drive.google.com/file/d/1r6sBTExA3GY1Es6yHL9ZxoLe8dXAPCQc/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32777
in CHEMICAL FIBERS INTERNATIONAL > Vol. 69, N° 2 (06/2019) . - p. 100-101[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21014 - Périodique Bibliothèque principale Documentaires Disponible PVT device : characterizing volumetric and linear deformations of composite materials / Violaine Le Louët in JEC COMPOSITES MAGAZINE, N° 141 (07-08/2021)
[article]
Titre : PVT device : characterizing volumetric and linear deformations of composite materials Type de document : texte imprimé Auteurs : Violaine Le Louët, Auteur ; Maxime Villière, Auteur ; Vincent Sobotka, Auteur Année de publication : 2021 Article en page(s) : p. 37-39 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anisotropie
Caractérisation
Composites
Matériaux -- Déformations géométriques et dimensionnelles
Matériaux -- Imprégnation
Mesure -- Instruments
Mesure de pression-volume-température
ThermodurcissablesIndex. décimale : 668.4 Plastiques, vinyles Résumé : At midway between a dilatometer and a calorimeter, the PVT (Pressure Volume Temperature) device provides composite manuacturers with a reliable way to determine the properties of materials to help them model the thermal, chemical and mechanical phenomena that occur throughout their forming processes. Note de contenu : - Volumetric variation characterization : the PVT-α device
- Working principle
- Application : analysing the thermal and chemical properties of RTM6 resin
- Towards the characterization of anisotropic deformation : PVT-HADDOC
- Fig. 1 : The PVT-α device
- Fig. 2 : Relative volume variation of a Hexcel RTM6 resin during processing, along with temperature and degree of cure
- Fig. 3 : PVT HADDOC
- Fig. 4 : Strains along three directions during th ecuring of an M21 prepreg, along with temperature and the estimated degree of curePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37183
in JEC COMPOSITES MAGAZINE > N° 141 (07-08/2021) . - p. 37-39[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22837 - Périodique Bibliothèque principale Documentaires Disponible PermalinkLa pyrolyse rapide du bois et la conversion catalytique de ses vapeurs in L'ACTUALITE CHIMIQUE, N° 484-485 (05-06/2023)
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PermalinkPyrolysis of chromed leather waste shavings in fluidized bed / Taysnara Simioni in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 10 (10/2014)
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PermalinkQuantification of protective properties of the coating/corrosion product/steel interface by integration of transmission line model with EIS results / J. Niu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 2 (03/2015)
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PermalinkQuantification des ramifications longues / Henri Burhin in PLASTIQUES & CAOUTCHOUCS MAGAZINE, N° 834 (10/2005)
PermalinkQuantifying abrasive-blasted surface roughness profiles using scanning electron microscopy / Stuart G. Croll in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)
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PermalinkPermalinkRaffinage des agroressources : extraction et caractérisations des glucuronoxylanes des coques de tournesol / Anne Bazus / 1991
PermalinkRapid fabrication of robust and bright colloidal amorphous arrays on textiles / Xiaodi Shi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 4 (07/2020)
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PermalinkRapid improvement of wool keratin fertiliser efficiency based on electrodegradation / Shu Caihong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 2 (03-04/2022)
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PermalinkRecent advances in silicone PSA technology / Stuart R. Kerr III in ADHESIVES AGE, Vol. 37, N° 10 (09/1994)
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PermalinkRecommendation for the quality assessment of glass cleaning agents/glass cleaners / The German Cosmetic, Toiletry, Perfumery and Detergent Association (Mainzer Landstraße 55, Frankfurt am Main, Germany) in SOFW JOURNAL, Vol. 148, N° 4 (04/2022)
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PermalinkRecovery and characterization of protein hydrolysate from chrome shavings by microbial degradation / C. Shanthi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 6 (06/2013)
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PermalinkRecovery of industrially useful hair and fat from enzymatic unhairing of goatskins during leather processing / Joseph Ondari Nyakundi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 6 (06/2022)
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PermalinkLe recyclage des films multicouches PA/PE / Vincent Hervais in CAOUTCHOUCS & PLASTIQUES, N° 804 (05/2002)
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