Thin Sol-Gel-Derived Silica-Coatings on CP-Titania and Bioactivity Thereupon

1994 ◽  
Vol 4 (3) ◽  
pp. 187-192
Author(s):  
E.G. Nordström ◽  
B.E. Södergård ◽  
L. Kukkonen
Keyword(s):  
Sol Gel ◽  
Silica Coatings

The Use of Sol-Gel Method for Obtaining Fire-Resistant Elastic Coatings on Cotton Fabrics

2021 ◽  
Vol 1038 ◽  
pp. 468-479
Author(s):  
Olga Skorodumova ◽  
Olena Tarakhno ◽  
Olena Chebotaryova ◽  
Oleg Bezuglov ◽  
Fatih Mehmet Emen
Keyword(s):  
Thin Layer ◽  
Fire Protection ◽  
Sol Gel ◽  
Fire Retardant ◽  
Cotton Fabrics ◽  
Covalent Bonds ◽  
Silica Coatings ◽  
Factors Influencing ◽  
Fire Retardant Properties ◽  
Main Factors

Based on the generalization of research results on the processes of obtaining SiO2 sols using tetraethoxysilane and ethyl silicates, the main factors influencing the elasticity of silica coatings on cotton fabrics and their fire-retardant properties are considered. The possibility of forming covalent bonds between the functional groups of cellulose, gel coating and flame retardant layer is considered, which explains the strong fixation of a thin layer of coating on the fibers of the fabric and improve its fire protection. The use of the developed compositions for fire-retardant elastic coatings based on ethyl silicate allows to increase the time of complete burning of cotton from 30s (untreated fabric) to 600s (treated with binary coating).

scholarly journals Effect of Modified Silica Materials on Polyvinyl Chloride (PVC) Substrates to Obtain Transparent and Hydrophobic Hybrid Coatings

2021 ◽  
Vol 11 (22) ◽  
pp. 11044
Author(s):  
Violeta Purcar ◽  
Valentin Rădițoiu ◽  
Alina Rădițoiu ◽  
Florentina Monica Raduly ◽  
Georgiana Cornelia Ispas ◽  
...  
Keyword(s):  
Polyvinyl Chloride ◽  
Sol Gel ◽  
Contact Angles ◽  
Hybrid Coatings ◽  
Water Contact ◽  
Silica Coatings ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Silica Materials ◽  
Window Blinds

In this research, we report a simple and inexpensive way to prepare transparent and hydrophobic hybrid coatings through deposition of different silica materials on polyvinyl chloride (PVC) substrates. The silica materials were prepared using an acid-catalyzed sol–gel method at room temperature (25 ± 2 °C), using alkoxysilanes: tetraethoxysilane (TEOS), as the silica source, and ethoxydimethylvinylsilane (DMVES), triethoxyoctylsilane (OTES), and trimethoxyhexadecylsilane (HDTMES), as modifier agents. The obtained materials were characterized (either as powders or as thin films) by Fourier-transform infrared spectroscopy (FTIR), UV/Vis spectroscopy, transmission electron microscopy (TEM), thermogravimetric analysis (TGA), atomic force microscopy (AFM), spectroscopic ellipsometry (SE), and water contact-angle measurements. UV/Vis spectra showed that the PVC substrate coated with the silica material containing TEOS/DMVES/OTES had a transmittance of about 90% in the wavelength range of 650–780 nm. The water contact angles increased from 83° for uncoated PVC substrate to ~94° for PVC substrates coated with the sol–gel silica materials. These PVC films with hybrid silica coatings can be used as the materials for outdoor applications, such as energy-generating solar panel window blinds or PVC clear Windmaster outdoor blinds.

Silver nanocluster formation in silica coatings by the sol-gel route

1997 ◽  
Vol 9 (9) ◽  
pp. 736-741 ◽  
Author(s):  
Lidia Armelao ◽  
Renzo Bertoncello ◽  
Mattia De Dominicis
Keyword(s):  
Sol Gel ◽  
Silver Nanocluster ◽  
Silica Coatings

Sol?Gel Synthesis of Methyl Modified Optical Silica Coatings and Gels from DDS and TEOS

2005 ◽  
Vol 33 (1) ◽  
pp. 19-24 ◽  
Author(s):  
Ye Zhang ◽  
Dong Wu ◽  
Yuhan Sun ◽  
Shaoyi Peng
Keyword(s):  
Sol Gel ◽  
Silica Coatings ◽  
Sol Gel Synthesis

Surface modification of coked alumina refractories by the deposition of sol-gel derived silica coatings

2019 ◽  
Vol 45 (7) ◽  
pp. 8626-8633 ◽  
Author(s):  
Karina S. Campos ◽  
Guilherme F.B. Lenz e Silva ◽  
Eduardo H.M. Nunes ◽  
Alysson M.A. Silva ◽  
Guillermo A. Bestard ◽  
...  
Keyword(s):  
Surface Modification ◽  
Sol Gel ◽  
Silica Coatings
Sign in / Sign up

Export Citation Format

Share Document