{"title":"HIGHLY-HYDROPHOBIC POLYURETHANE COATINGS SURFACE-MODIFIED BY AMINOSILANE CONTAINED SOLS","authors":"D. A. Erofeev, L. N. Mashlyakovsky","doi":"10.36807/1998-9849-2022-61-87-44-50","DOIUrl":null,"url":null,"abstract":"In this article, highly-hydrophobic polyurethane coatings with low limiting wetting angle hysteresis were received by the surface modification with sol-gel technology. The influence of sol components on structure of obtained gels in acid- and base-catalyzed sol-gel process examined by both Fourier-infrared and nuclear magnetic resonance spectroscopy. Influence of tetraethoxysilane and 3-aminopropyltriethoxysilane ratio on wetting of xerogels coating was shown. Particle size distribution in receiving sols was investigated. By atomic-force microscopy and scanning electron microscopy the topography and the morphology of the surface of polyurethane coatings modified by xerogels were studied","PeriodicalId":9467,"journal":{"name":"Bulletin of the Saint Petersburg State Institute of Technology (Technical University)","volume":"20 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of the Saint Petersburg State Institute of Technology (Technical University)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.36807/1998-9849-2022-61-87-44-50","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
In this article, highly-hydrophobic polyurethane coatings with low limiting wetting angle hysteresis were received by the surface modification with sol-gel technology. The influence of sol components on structure of obtained gels in acid- and base-catalyzed sol-gel process examined by both Fourier-infrared and nuclear magnetic resonance spectroscopy. Influence of tetraethoxysilane and 3-aminopropyltriethoxysilane ratio on wetting of xerogels coating was shown. Particle size distribution in receiving sols was investigated. By atomic-force microscopy and scanning electron microscopy the topography and the morphology of the surface of polyurethane coatings modified by xerogels were studied
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