Synthesis and properties of phosphate-based diacrylate reactive diluent applied to UV-curable flame-retardant wood coating / Gunwant P. Lokhande in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 1 (01/2017)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 1 (01/2017) . - p. 255–266 Titre : Synthesis and properties of phosphate-based diacrylate reactive diluent applied to UV-curable flame-retardant wood coating Type de document : texte imprimé Auteurs : Gunwant P. Lokhande, Auteur ; Sachin U. Chambhare, Auteur ; Ramanand N. Jagtap, Auteur Année de publication : 2017 Article en page(s) : p. 255–266 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois -- Revêtements protecteurs Diluants Ignifugeants Composé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface. Revêtements -- Séchage sous rayonnement ultraviolet:Peinture -- Séchage sous rayonnement ultraviolet Index. décimale : 667.9 Revêtements et enduits Résumé : The diacrylate reactive diluent was synthesized by reacting glycidyl methacrylate, piperazine, and cyclic ethylene chlorophosphate. The synthesized reactive diluent was utilized to formulate UV-curable wood coating. The weight fractions of reactive diluent were varied from 0 to 25% in coating formulation with constant photoinitiator concentration. The molecular structure of reactive flame retardant was evaluated by FTIR, mass spectroscopy, 31PNMR, and 1HNMR spectral analysis. The flame retardant behaviors of the cured film were evaluated from limiting oxygen index and UL-94 vertical burning test. Thermal stability was estimated from thermogravimetric analysis and differential scanning calorimetry. The effects of varying concentrations of reactive diluent on the viscosity of the formulation along with optical, mechanical, and chemical resistance properties of coatings were evaluated. The gel content, water absorption behavior, and stain resistance of coatings were also studied. Note de contenu : - EXPERIMENTAL : Synthesis of difunctional (hydroxypropyl methacrylate) piperazine (DHMP) - Synthesis of phosphate-nitrogen-based reactive diluent (DHMPP) - Preparation of UV-curable coatings - CHARACTERIZATIONS : Fourier transform infrared spectroscopy (FTIR) - GC-MS analysis (GC-MS) - 1H NMR spectroscopy (1HNMR and 31PNMR) - Determination of viscosity of resin by cone/plate geometry - Evaluation of UV-cured film properties - Evaluation of UV-cured coating properties - RESULTS AND DISCUSSION : Iodine value - Fourier transform infrared spectroscopy (FTIR) - GC-MS analysis (GC-MS) - 1H NMR spectroscopy (1HNMR and 31PNMR) - Determination of viscosity of resin by cone/plate geometry - Evaluation of UV-cured film properties - Thermal analysis DOI : 10.1007/s11998-016-9849-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9849-6.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27807 [article]

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UV-curable behavior of phosphorus- and nitrogen-based reactive diluent for epoxy acrylate oligomer used for flame-retardant wood coating / Sachin U. Chambhare in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 4 (07/2016)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 4 (07/2016) . - p. 703-714 Titre : UV-curable behavior of phosphorus- and nitrogen-based reactive diluent for epoxy acrylate oligomer used for flame-retardant wood coating Type de document : texte imprimé Auteurs : Sachin U. Chambhare, Auteur ; Gunwant P. Lokhande, Auteur ; Ramanand N. Jagtap, Auteur Année de publication : 2016 Article en page(s) : p. 703-714 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois -- Revêtements protecteurs Copolymère époxy acrylate Diluants Oligomères Revêtements -- Analyse Revêtements -- Séchage sous rayonnement ultraviolet Rhéologie Index. décimale : 667.9 Revêtements et enduits Résumé : Multifunctional phosphorus and nitrogen containing tris-diethanolamine spirocyclic pentaerythritol bisphosphorate reactive diluent (TDSPBRD) for epoxy acrylate oligomer was synthesized from spirocyclic pentaerythritol bisphosphorate diphosphoryl chloride, diethanolamine, and allyl chloroformate. The synthesized reactive diluent was utilized to formulate ultraviolet (UV)-curable wood coating. The weight fraction of reactive diluent in the coating formulation was varied from 5 to 25 wt% with constant photoinitiator concentration. The molecular structure of the reactive flame retardant was confirmed by Fourier transform infrared (FTIR), 1H nuclear magnetic resonance (NMR) and 31P NMR spectral analysis and energy dispersive spectroscopy (EDAX). Further, the effectiveness of the flame retardant behavior of the coatings was evaluated using the limiting oxygen index and UL-94 vertical burning test. Thermal stability was estimated from thermogravimetric analysis and differential scanning calorimetry. The effects of varying the concentration of TDSPBRD on the viscosity of the coating formulation along with the optical, mechanical and chemical resistance properties of the coatings were evaluated. The coatings gel content, water absorption behavior, and stain resistance were also studied. Note de contenu : - MATERIALS AND METHODS : Raw materials - Synthesis of spirocyclic pentaerythritol bisphosphorate diphosphoryl chloride (SPBDC) - Synthesis of tris-diethanolamine spirocyclic pentaerythritol bisphophorate (TDSPB) - Synthesis of tris-diethanolamine spirocyclic pentaerythritol bisphophorate reactive diluent (TDSPBRD) - Preparation of UV-curable wood coatings - Characterization methods - RESULTS AND DISCUSSION : Physicochemical analysis - Elemental analysis - FTIR analysis - 31P NMR analysis - 1H NRM analysis of reactive diluent - Viscosity measurement - Thermogravimetric analysis - Differential scanning calorimetry (DSC) - Limiting oxygen index - UL-94 vertical burning test - Gloss of UV-cured coatings - Gel content of UV-cured coatings - Water absorption behavior of UV-cured coatings - Stain resistance of UV-cured coatings - Coating properties DOI : 10.1007/s11998-015-9777-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9777-x.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26750 [article]

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