Performance properties of acrylic and acrylic polyol–polyurethane based hybrid system via addition of nano‐caco₃ and nanoclay

Abstract

Thermosetting acrylic (TSA) resin was prepared by solution polymerisation of acrylic acid and methyl methacrylate (MMA). Hybrid polymer consisting of acrylic polyol-polyurethane was prepared by addition of hydroxy ethyl acrylate and hexamethylene diisocyanate (HMDI). Incorporation of Functionalised nanocalcium carbonate and bentonite nanoclay were accomplished by in situ method during the synthesis of both the polymers. Loading of nano-CaCO 3 and nanoclay was varied from 0 to 4 wt.% to investigate variation in mechanical, optical and high performance properties. The superiority of nanoclay in enhancing the mechanical and performance properties like the salt spray and humidity resistance in comparison to that of nano-CaCO 3 was clearly established. It was also observed that, addition of nanomaterials in hybrid resins system shows superior results compared to neat acrylic system and in situ additions of these nanomaterials improve the dispersion and stability in the matrix.La résine acrylique thermodurcissable (RAT) aété préparée par polymérization en solution de l'acide acrylique et du méthacrylate de méthyle (MAM). Le polymère hybride composé de polyol-polyuréthanne acrylique aété préparé par l'ajout d'acrylate de 2-hydroxyéthyle et de diisocyanate d'hexaméthylène (DIHM). L'incorporation de carbonate de calcium nano et de nanoargile de bentonite fonctionnalisés aété accomplie par une méthode in situ lors de la synthèse des deux polymères. Le chargement du CaCO 3 nano et de la nanoargile variait de 0à 4% pds pourétudier la variation des propriétés mécaniques, optiques et de rendementélevé. On a clairementétabli la supériorité de la nanoargile pour ce qui est d'accroître les propriétés mécaniques et de rendement comme le jet salin et la résistanceà l'humidité en comparaisonà celles du CaCO 3 nano. On aégalement observé que l'ajout de nanomatériaux dans le système de résines hybrides fournit des résultats supérieurs comparativement au système acrylique pur et les ajouts in situ de ces nanomatériaux améliorent la dispersion et la stabilité dans la matrice.

Interactions between inorganic nanoparticles and cellulose nanofibrils

“…Hybrid materials combine the constituents aiming for a synergy leading to properties exceeding those of the individual constituents. Nanosized clay and calcium carbonate particles have been used in polymer nanocomposites enhancing, for example, abrasion resistance (Mishra et al 2005;Subramani et al 2007;Kapole et al 2011). A few studies report structures combining cellulose and clay particles suggested for, among others, packaging (Tunc and Duman 2010), thermoplastic composites (Ludvik et al 2007;Delhom et al 2010) and to improve thermal properties (Cerruti et al 2008;Lin et al 2008).…”

Preparation, property characterization and UV‐converting application of poly(conjugated azomethine‐urethane)/hydroxyl polyacrylate resin

“…For instance, the palm‐based acrylic polyol ester resin could be used as a UV curable coating 8. The hybrid polymer coating film of acrylic polyol/hexamethylene diisocyanate (HDI)/nano‐CaCO 3 had improved its gloss, pencil hardness, abrasion resistance 9…”