Preparation and characterization of polyacrylate composite and its application in superhydrophobic coating based on silicone-modified ZnO / Changpo Ma in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 2 (03/2021) . - p. 415-433 Titre : Preparation and characterization of polyacrylate composite and its application in superhydrophobic coating based on silicone-modified ZnO Type de document : texte imprimé Auteurs : Changpo Ma, Auteur ; Yongzan Li, Auteur ; Jian Zhang, Auteur ; Feng Ning, Auteur ; Minxia Kang, Auteur ; Hui Li, Auteur ; Zumin Qiu, Auteur Année de publication : 2021 Article en page(s) : p. 415-433 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Emulsions Hydrophobie Nanoparticules Oxyde de zinc Polyacrylates Revêtements organiques Rugosité Silicones Les 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). Thermogravimétrie Index. décimale : 667.9 Revêtements et enduits Résumé : In this paper, a kind of silicone containing double bond and hydrogen bond has been synthesized via telomerization. In order to disperse and incorporate ZnO into the polymer matrix, ZnO was modified with silicone. Finally, ZnO/polyacrylate and silicone/polyacrylate composites were prepared using modified ZnO and silicone. The present study reports synthesis and characterization of ZnO/polyacrylate and silicone/polyacrylate nanocomposites by in situ emulsion polymerization. The effects of ZnO and silicone on the morphological structure and thermal properties of composites were systematically studied. The composites were characterized using FTIR, XRD, SEM, TEM, TGA, particle size analysis, UV, and WCA. It could be seen that the thermal degradation temperature of the composites increased significantly with the addition of ZnO and silicone. SEM analysis showed that the films were evenly distributed with the surface-modified ZnO nanoparticles. Then, the modified ZnO/polyacrylate superhydrophobic composite coating was prepared using modified ZnO and silicone/polyacrylate emulsion. The coating has excellent self-cleaning and oil–water separation properties. Note de contenu : - EXPERIMENTAL : Materials - Preparation of a silicone containing double bond and hydrosilane bond - Preparation of silicone-modified ZnO nanoparticles - Preparation of ZnO/polyacrylate nanocomposite emulsion - Preparation of silicone/polyacrylate nanocomposite emulsion - Preparation of modified ZnO/polyacrylate superhydrophobic composite coating - Characterization - RESULTS AND DISCUSSION : FTIR analysis - XRD analysis - SEM analysis - TEM analysis - TG analysis - Particle size distribution - UV resistance - Water contact angle and water absorption - APPLICATION OF MODIFIED ZNO/POLYACRYLATE SUPERHYDROPHOBIC COMPOSITE COATING : The microstructure of the coating - Stability of superhydrophobic coating - Application of superhydrophobic coating - Scheme 1 : Preparation of a silicone containing double bond and hydrosilane bond - Scheme 2 : Preparation of silicone-modified ZnO nanoparticles - Scheme 3 : Preparation of ZnO/polyacrylate nanocomposite emulsion - Scheme 4 : Preparation process of superhydrophobic coating - Table 1 : General recipe for preparation of ZnO/polyacrylate nanocomposite emulsion - Table 2 : General recipe for preparation of silicone/polyacrylate nanocomposite emulsion - Table 3 : Thermogravimetric parameters of polyacrylate - Table 4 : The GPC of polyacrylate - Table 5 : Roughness parameters of samples DOI : https://doi.org/10.1007/s11998-020-00411-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00411-7.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35604 [article]

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