Synthesis and properties of polyurethane acrylate modified by different contents of stearyl alcohol / Lili Qin in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 1 (01/2015)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 12, N° 1 (01/2015) . - p. 197-204 Titre : Synthesis and properties of polyurethane acrylate modified by different contents of stearyl alcohol Type de document : texte imprimé Auteurs : Lili Qin, Auteur ; Jun Nie, Auteur ; Yong He, Auteur Année de publication : 2015 Article en page(s) : p. 197-204 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion Alcool stéarylique Analyse thermomécanique dynamique Chlorure de polyvinyle Copolymère uréthane acrylate Copolymères -- Propriétés mécaniques Oligomères Photoréticulation Polycarbonates Retrait volumique Verre Index. décimale : 667.9 Revêtements et enduits Résumé : Polyurethane acrylates (PUAs) modified by different amounts of stearyl alcohol were synthesized from stearyl alcohol (SA), isophorone diisocyanate, 2-hydroxyethyl acrylate, and polycaprolactone triol. The molecular structure was characterized by Fourier transform infrared spectroscopy. Real time infrared spectroscopy was used to investigate the kinetics of photopolymerization of synthesized PUAs. The volume shrinkage was measured by laser displacement sensor. The adhesion on glass, polycarbonate (PC), and polyvinyl chloride (PVC) was tested by the laser micrometer and universal testing machine. The glass transition temperature (T g) and storage modulus (E′) were measured by dynamic mechanical analyzer (DMA). The pendulum hardness, pencil hardness and flexibility were also measured. The results showed that the greater the amount of SA in synthesized PUAs, the lower the volume shrinkage and the better the adhesion to glass, PC, and PVC substrates. Note de contenu : - EXPERIMENTAL : Materials - Instrumentation - Synthesis process of polyurethane acrylate (PUA) - Sample preparation - RESULTS AND DISCUSSION : Characterization of PUA - Photopolymerization kinetics of synthesized oligomer - Volume shrinkage - Dynamic mechanical thermal properties - Mechanical properties DOI : 10.1007/s11998-014-9625-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9625-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23218 [article]

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