Robust and flexible transparent protective film fabricated with an ambient-curable hybrid resin / Haitao Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 4 (07/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 4 (07/2021) . - p. 1065–1073 Titre : Robust and flexible transparent protective film fabricated with an ambient-curable hybrid resin Type de document : texte imprimé Auteurs : Haitao Liu, Auteur ; Hailin Cao, Auteur ; Yudong Huang, Auteur ; Pengcong Shao, Auteur ; Yiwu Yan, Auteur Année de publication : 2021 Article en page(s) : p. 1065–1073 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Dureté (matériaux) Polyéthylène téréphtalate Polymères -- Synthèse Polymères à terminaison silane Polymérisation Procédés de fabrication Revêtements organiques Souplesse (mécanique) Transparence (optique) Index. décimale : 667.9 Revêtements et enduits Résumé : An ambient-curable hybrid resin (ACHR) terminated with trimethoxysilane functional groups, synthesized through a simple ring-opening reaction between 3-glycidyloxypropyltrimethoxysilane (KH560) and 4,4′-methylenebis (cyclohexylamine) (PACM), was applied to the surface of a transparent organic polymer to produce a robust, flexible, and transparent protective hybrid film, moisture cured at room temperature. The structure, morphology, and optical, mechanical, and thermal properties of the obtained hybrid film were evaluated. The hybrid film allowed the transmittance of more than 87% of visible light (at 600 nm), maintaining almost the same high transparency as bare PET film. The unique flexible segments and rigid segments in the inorganic–organic hybrid structure of the film realized superior resistance to bending and scratching. The hybrid film-coated PET demonstrated excellent flexibility, with an extremely low bending radius, illustrated by wrapping around a 1-mm mandrel bar without cracking. In addition, the hybrid film exhibited superior pencil hardness (of 2H) and excellent wear durability, i.e., no scratching after being subjected to 200 abrasion cycles using #0000 steel wool under a 19.6 kPa load. The robust, flexible, and transparent protective film developed here, and its simple and efficient preparation method, should have extensive application prospects. Note de contenu : - Materials - Synthesis of the silane-terminated ambient-curable hybrid resin (ACHR) - Fabrication of the hybrid film - Characterization - Scheme 1 : (a) Synthesis scheme of the hybrid resin ; and (b) fabrication scheme of the hybrid film DOI : https://doi.org/10.1007/s11998-021-00460-y En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00460-y.pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36212 [article]

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