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Synthesis of four-component acrylic-modified water-reducible alkyd resin : investigation of dilution ratio effect on film properties and thermal behaviors / Özge Naz Büyükyonga in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 1 (01/2017)
[article]
Titre : Synthesis of four-component acrylic-modified water-reducible alkyd resin : investigation of dilution ratio effect on film properties and thermal behaviors Type de document : texte imprimé Auteurs : Özge Naz Büyükyonga, Auteur ; Nagihan Akgün, Auteur ; Isil Acar, Auteur ; Gamze Güçlü, Auteur Année de publication : 2017 Article en page(s) : p. 117-128 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Dilution
Polyacryliques
Polyalkyde modifiée acrylique
Polyalkydes
Revêtement de surface
Revêtements -- Propriétés chimiques
Revêtements -- Propriétés physiques
Revêtements -- Propriétés thermiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : This study investigated the effect of the dilution ratio on film properties of acrylic-modified water-reducible alkyd resins. First, new four-component acrylic-modified alkyd resins based on 1,3-propanediol containing 40% of the equivalent amount of acrylic copolymer to alkyd resin were synthesized using the fatty acid method. The synthesized acrylic-modified alkyd resin was then dissolved in isopropyl alcohol (IPA) at various ratios and further diluted using distilled water at various ratios to obtain by-weight percentages of 70/50, 70/60, and 80/60 of solid content to IPA and water, respectively. Films of the modified alkyd resins were prepared, and cured at 150°C for 1 h, then their physical and chemical surface coating properties and thermal behaviors were investigated. The best results were obtained for the by-weight percentages of 80/60. Note de contenu : - EXPERIMENTAL : Materials - Preparation of acrylic-modified water-reducible alkyd resins - Preparation of water-reducible acrylic-modified alkyd resin films - Surface coating properties of water-reducible acrylic-modified alkyd resin films - FTIR analysis of acrylic copolymer - Thermogravimetric analysis of water-reducible acrylic-modified alkyd resin films
- RESULTS AND DISCUSSION : FTIR analysis of acrylic copolymer - Surface coating properties of water-reducible acrylic-modified alkyd resin films - Thermogravimetric analysis of water-reducible acrylic-modified alkyd resin films
- CONCLUSIONS : Physical film properties - Chemical film properties - Thermal propertiesDOI : 10.1007/s11998-016-9835-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9835-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27794
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Code-barres Cote Support Localisation Section Disponibilité 18674 - Périodique Bibliothèque principale Documentaires Disponible Synthesis of PET-based urethane-modified alkyd resins from depolymerization intermediates of post-consumer PET bottles: coating properties and thermal behaviors / Cavusoglu Ferda Civan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)
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Titre : Synthesis of PET-based urethane-modified alkyd resins from depolymerization intermediates of post-consumer PET bottles: coating properties and thermal behaviors Type de document : texte imprimé Auteurs : Cavusoglu Ferda Civan, Auteur ; Isil Acar, Auteur Année de publication : 2023 Article en page(s) : p. 741-761 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alkyde modifié uréthane
Bouteilles en matières plastiques -- Recyclage
Dépolymérisation
Fourier, Spectroscopie infrarouge à transformée de
Matières plastiques -- Déchets
Polyéthylène téréphtalate
Polymères -- Synthèse
Résistance chimique
Revêtement de surface
Revêtements (produits chimiques)
Revêtements -- Propriétés physiques
Revêtements -- Propriétés thermiques
Revêtements organiques
ThermogravimétrieIndex. décimale : 667.9 Revêtements et enduits Résumé : Urethane-modified alkyd resins were synthesized using the depolymerization intermediates obtained from simultaneous hydrolysis–glycolysis reactions of post-consumer poly(ethylene terephthalate) (PET) bottles with dipropylene glycol (DPG) and water. For this aim, first, the synthesis of a four-component reference alkyd resin having an oil content of 50% was synthesized by using tall oil fatty acid (TOFA), trimethylolpropane (TMP), phthalic anhydride (PA), and dipropylene glycol (DPG). The PET-based alkyd resins were also synthesized using different amounts and types of purified and fractionated depolymerization intermediates (water-insoluble fraction, WIF, and water-soluble and crystallizable fraction, WSCF) under the same reaction conditions. For the synthesis of PET-based alkyd resins, the depolymerization intermediates were used partially or completely instead of dibasic acid and/or diol components in alkyd resin formulations. In order to determine the optimum modification ratio for urethane-modified alkyd resin synthesis, the reference alkyd resin was reacted with toluene diisocyanate (TDI) at different molar ratios (NCO/OH: 1/1, 1/2, and 1/3), and the optimum NCO/OH ratio was determined as 1/1, according to the surface coating properties. And, then, all PET-based urethane-modified alkyd resins were prepared by the modification reactions of the PET-based alkyd resins with TDI at an optimum ratio. At the end of the study, it was observed that the use of waste PET intermediates (WIF or WSCF) did not cause any negative effects on physical/chemical surface coating and thermal properties ; on the contrary, some properties were obtained as superior than that of the reference resin. In conclusion, it seems possible to use PET-based urethane-modified alkyd resin could be used as a cheap, environmentally friendly, and relatively economic binder component in synthetic paint formulations. In the synthesis of urethane-modified alkyd resin, using a certain amount of waste PET intermediate instead of dibasic acid and/or diol component will reduce raw material costs and also benefit the environment by re-evaluation of recycled PET. Thus, it could be both possible to recycle of post-consumer PET bottles, which are a valuable waste, and to provide cheap raw materials without compromising its features for paint formulations. These results are remarkable in terms of sustainability and waste management besides are also important for the economy and paint industry. Note de contenu : - MATERIALS AND METHODS : Materials - Instruments - Methods - FTIR analyses - Surface coating properties - Thermal analyses
- RESULTS AND DISCUSSION : FTIR analysis results - Surface coating tests results - TGA analysis results
- Table 1 : Depolymerization reactions conditions and properties of the depolymerization intermediates
- Table 2 : Symbols and compositions of the four-component alkyd resins used in the synthesis of the urethane-modified alkyd (UA) resins
- Table 3 : Symbols, components, and modification ratios of the urethane-modified alkyd (UA) resins
- Table 4 : Drying stages and physical surface coating properties of the reference urethane-modified alkyd (UA) resins
- Table 5 : Chemical surface coating properties of the reference urethane-modified alkyd (UA) resins
- Table 6 : Drying time test results of the urethane-modified alkyd (UA) resins
- Table 7 : Physical surface coating properties of the urethane-modified alkyd (UA) resins
- Table 8 : Alkali resistance test results of the urethane-modified alkyd (UA) resins
- Table 9 : Acid resistance, salt-water resistance, and environmental resistance test results of the urethane-modified alkyd (UA) resins
- Table 10 : Water resistance test results of the urethane-modified alkyd (UA) resins
- Table 11: Solvent resistance test results of the urethane-modified alkyd (UA) resins
- Table 12 : The temperatures required for reaching certain weight losses (%)DOI : https://doi.org/10.1007/s11998-022-00705-y En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00705-y.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39316
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Code-barres Cote Support Localisation Section Disponibilité 24056 - Périodique Bibliothèque principale Documentaires Disponible Synthesis of silicone-acrylic-modified high-ortho novolac resin with enhanced thermal resistance and surface coating properties / Serkan Emik in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 6 (11/2021)
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Titre : Synthesis of silicone-acrylic-modified high-ortho novolac resin with enhanced thermal resistance and surface coating properties Type de document : texte imprimé Auteurs : Serkan Emik, Auteur ; Tülin Banu Iyim, Auteur ; Saadet özgümüs, Auteur Année de publication : 2021 Article en page(s) : p. 1679-1690 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse thermique
Caractérisation
Polymères -- Synthèse
Résistance à l'humidité:Résistance à l'eau
Revêtements -- Propriétés chimiques
Revêtements -- Propriétés physiques
Revêtements -- Propriétés thermiques
Revêtements organiques
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).
VinyltriméthoxysilaneIndex. décimale : 667.9 Revêtements et enduits Résumé : In the present study, vinyltrimethoxysilane was used to modify high-ortho novolac resin (NR) to obtain a vinyl silicone-modified phenolic oligomer (Si-mod NR). Subsequently, this oligomer is polymerized with methyl methacrylate. The mid-products (NR and Si-mod NR) and synthesized silicone-modified phenolic/acrylic resin (Ac/Si-mod NR) were characterized by Fourier transform infrared spectroscopy, and thermal properties were investigated by using thermal gravimetric analysis and differential scanning calorimetry techniques. In addition, the surface coating properties, including drying, hardness, adhesion, impact resistance, gloss, acid, alkaline, water, and solvent resistance of the films prepared from these products, were comparatively investigated. The results showed that the modification reactions yield a novel resin (Ac/Si-mod NR), which can be easily used as a surface coating material with high thermal resistance, flexibility, and excellent film properties. Note de contenu : - EXPERIMENTAL : Material and instruments - Synthesis of high-ortho novolac resin (NR) - Synthesis of silane and vinyl-modified novolac intermediate (Si-mod NR) - Polymerization of Si-mod NR intermediate with the acrylic monomer (Ac/Si-mod NR) - Film preparation - Characterization of surface coating properties
- RESULTS AND DISCUSSION : Synthesis and characterization studies - Film properties of the products -
- Table 1 : The list of surface coating test standards
- Table 2 : Specific weight loss temperatures and the char yields of the products
- Table 3 : Film properties of the products (drying, adhesion, hardness, impact resistance, and gloss)
- Table 4 : Water resistance properties of the films
- Table 5 : Alkaline resistance properties of the films
- Table 6 : Acid resistance properties of the films
- Table 7 Solvent resistance properties of the filmsDOI : https://doi.org/10.1007/s11998-021-00527-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00527-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36825
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Code-barres Cote Support Localisation Section Disponibilité 23146 - Périodique Bibliothèque principale Documentaires Disponible The formation of polyester-melamine/urethane coatings / Nadezda Denisova in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4651 (05/2019)
[article]
Titre : The formation of polyester-melamine/urethane coatings Type de document : texte imprimé Auteurs : Nadezda Denisova, Auteur ; Natalija B. Skopintseva, Auteur ; Daria Afanaseva, Auteur ; Evgenii Indeikin, Auteur Année de publication : 2019 Article en page(s) : p. 48-50 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse thermique
Coil coatings
Copolymère mélamine-Formaldéhyde
Diisocyanate d'hexaméthylène
MéthylationLa méthylation est l'attache ou la substitution d'un groupement méthyle sur un substrat. La déméthylation est au contraire, la suppression d'un groupe méthyle sur un substrat.
Réticulation (polymérisation)
Revêtements -- Analyse
Revêtements -- Propriétés mécaniques
Revêtements -- Propriétés physiques
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : One of the cost-effective ways to significantly influence the coating formation process and the performance of polyester coatings is to use a cross-linking agent containing an isocyanate. Methylated melamine-formaldehyde with a high degree of alkylation (HMMM) and methyl ethyl ketoxime-blocked hexamethylene diisocyanate (HDI) were used for polyester resin cross-linking. The influence of cross-lin king agents on coating performance and characteristics was studied using Small Amplitude Oscillatory Shear Rheomenty (SAOS), Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) techniques. The cross-linking degree of the polyester system containing the mixture of HMMM and HDI was shown to be significantly lower than that of the systems where only one of the cross-linking agents was used. High loss modulus values G" in the system with HMMM as compared to the system with HDI can be explained by a less dense three-dimensional network structure. With the decrease of HMMM and HDI the formation of three-dimensional network starts at a higher temperature. At the same time, when only the hardener content is reduced it leads to the decrease of the cross-linking degree. Note de contenu : - Table 1 : System ingredients
- Table 2 : Cross-linking reaction start temperatures for the compositions studies
- Table 3 : Cross-link concentrations for the system
- Table 4 : Physical and mechanical properties of the films, PTM = 224°C, 60 sec
- Fig. 1 : Storage modulus (G') and loss modulus (G") during coating curing
- Fig. 2 : TGA - analysis a) Sample 1, b) Sample 2
- Fig. 3 : Storage modulus (G') and loss modulus (G") during coating curing
- Fig. 4 : The influence of curing temperature on residual heat of reaction
- Fig. 5 : The influence of curing temperature on the TgEn ligne : https://drive.google.com/file/d/1BasgjNlsCHEPzXR6seqIu44IjZbJI9pu/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32608
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Code-barres Cote Support Localisation Section Disponibilité 20960 - Périodique Bibliothèque principale Documentaires Disponible A tunable controlled-release urea fertilizer coated with a biodegradable polyurethane-nanoclay composite layer / Kannika Sitthisuwannakul in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)
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Titre : A tunable controlled-release urea fertilizer coated with a biodegradable polyurethane-nanoclay composite layer Type de document : texte imprimé Auteurs : Kannika Sitthisuwannakul, Auteur ; Kanittha Kamonchaivanich, Auteur ; Thanakorn Wirunmongkol, Auteur ; Pennapa Muthitamongkol, Auteur ; Wiyong Kangwansupamonkon, Auteur Année de publication : 2023 Article en page(s) : p. 635-646 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Angle de contact
Argile
Biodégradation
Caractérisation
Coefficient de diffusionUn coefficient de diffusion est une grandeur caractéristique du phénomène de diffusion de la matière. Le coefficient de diffusion mesure le rapport entre le flux molaire dû à la diffusion moléculaire, et le gradient de concentration de l'espèce chimique considérée (ou, plus généralement, de la variable d'effort entraînant cette diffusion), comme formulé par la loi de Fick.
Engrais organiques
Nanoparticules
Polyuréthanes
Revêtements -- Propriétés chimiques
Revêtements -- Propriétés mécaniques
Revêtements -- Propriétés physiques
Revêtements organiques
Système de libération contrôlée (technologie)
UréeIndex. décimale : 667.9 Revêtements et enduits Résumé : To minimize a loss of urea to the environment and also control a release activity, a tunable and controlled-release urea fertilizer (TCRF) was created. Composite coating layers of the TCRF were synthesized using a composite of nanoclay (B27), and a linseed oil-modified polyurethane resin (BURNOCK® UL65). The concentration of B27 nanoclay was varied from 0, 3, 5 and 10 wt% and called TCRF, TCRF-3, TCRF-5 and TCRF-10, respectively. Firstly, nanocomposite free-standing films (NFs) with 0, 0.5, 1, 3, 5 and 10 wt% of B27 were synthesized and tested to demonstrate the mechanical properties of the coating layer. When the B27 clay content increased, the Young’s modulus and yield strength were increased. On the other hand, the elongation at break was decreased. NFs were also characterized by XRD and TEM, which showed a partial exfoliated nanocomposite character. The water contact angle measurement showed that all NFs had hydrophobicity properties (87°–90° contact angle). Moreover, the microorganism degradability test showed that the NFs degraded at 37 ± 2°C and 58 ± 2°C in manure, a common agriculture media. The study on coated urea fertilizers found that the thickness of all TCRFs layers is around 52–54 μm. The nitrogen release profiles of the TCRF at 60°C in water as a predictive analytic model were investigated using an elemental analyzer that is a pathway analysis method to understand the release profiles of the TCRFs. All release profiles fitted well with the sigmoidal model, which was suitable for a common plant growth. The profiles gave diffusion coefficients (D) in the range of 49–69 μm2 h−1 and presented an inverse trend to the yield strength of the NFs. The investigation demonstrated that B27 played an important role in tuning the strength of the coating layers that affected the urea release to the plants and the environment. Note de contenu : - MATERIALS AND METHODS : Chemicals - Nanocomposite free-standing films (NFS) preparation - Biodegradability analysis of the NF - Tunable controlled-release urea fertilizer (TCRF) preparation - Characterizations - Nitrogen release test and kinetic study of TCRF
- RESULTS AND DISCUSSION : Swelling performance and the characteristics of the nanoclays - Chemical and physical properties of the NF - Biodegradable ability - Nitrogen release mechanism
- Table 1 : Mechanical properties and contact angles of NF nanocomposite films
- Table 2 : The percentages of biodegradation via the conversion yield of carbon in the sample to carbon dioxide according to the ASTM 5338–98 test method
- Table 3 : Kinetic parameters and diffusion coefficients of various types of TCRFDOI : https://doi.org/10.1007/s11998-022-00688-w En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00688-w.pdf?pdf=button Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39308
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Code-barres Cote Support Localisation Section Disponibilité 24056 - Périodique Bibliothèque principale Documentaires Disponible Unique additives for high-performance industrial protective coatings / Yong Zhang in COATINGS TECH, Vol. 20, N° 3 (05-06/2023)
PermalinkVersatile epoxy acrylate / Graham Clark in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 199, N° 4543 (12/2009)
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