Glass strengthening by SiO2–TiO2 organically modified silica coating

Kirtay, Sebahattin; Oktay, Enver; Günay, Volkan

doi:10.1016/j.tsf.2006.04.004

Cited by 7 publications

(2 citation statements)

References 17 publications

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“…The average value of residual stress measured by film stress tester was recorded in Table . From the data of characterization, the tensile stresses were generated in all three coatings, which is consistent with the conclusion that, for the solvent‐based coatings, tensile rather than compressive stresses are generated within the coating.…”

Section: Resultssupporting

confidence: 86%

Strengthening mechanism of cover glass by Sol‐Gel SiO₂ coating

Zhou

Wen

et al. 2019

Int J of Appl Glass Sci

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Strengthening is a huge challenge of ultrathin cover glass in mobile electronic devices. In this paper, a transparent sol‐gel silica coating has been sprayed on the surface of chemically strengthened cover glass, and three different coatings (identified as thickness/curing temperature: 3 μm/80°C, 5 μm/80°C, and 3 μm/180°C) have been prepared. Characterized by four‐point bending experiment, the strengthening effects of three coatings, representing by the increases of strength of the coated glass, are 47 MPa, 98 MPa, and 58 MPa for 3 μm/80°C, 5 μm/80°C, and 3 μm/180°C, respectively. Based on finite element simulation and experimental data of four‐point bending, the influence of four parameters of surface coating (elastic modulus, residual stress, filling ratio, and thickness) on glass strengthening has been investigated. Simulation analysis shows that the increase of elastic modulus, residual stress, and filling ratio of the SiO2 coating facilitates the increase of bending strength of cover glass, and the coating thickness has less influence on the glass strength. However, the experimental results demonstrate that the coating thickness has a significant impact on the strength of glass: when the layer thickness of sample cured at 80°C increases from 3μm to 5μm, the bending strength of glass can improve by 51MPa. Since greater coating thickness induces greater filling ratio, which is the main contributor to the strengthening effect of increased coating thickness, so, elastic modulus, residual stress, and filling ratio of the coating are the three key factors of the cover glass strengthening.

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Section: Resultssupporting

confidence: 86%

Strengthening mechanism of cover glass by Sol‐Gel SiO₂ coating

Zhou

Wen

et al. 2019

Int J of Appl Glass Sci

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“…Titania-silica mixed oxides have attracted significant research interest, because of their wide range of applications, such as glasses with a low thermal coefficient [36] or high strength [37], super-hydrophilic surfaces [38,39], implant coatings for direct tissue attachment [40,41], high-k dielectric materials [42], optical sensors [43][44][45], antireflection coating for solar cells [46], optical planar waveguide [47][48][49], and heterogeneous catalysts [50][51][52][53][54]. Various kinds of TiO 2 -SiO 2 composites have been developed, which involve spherical particles [55,56], thin films [39,44,46], fibers [57,58], and porous materials [50,54,59].…”

Section: Water-soluble R-sio 15 /Tio 2 Hybrid Nanoparticles By Coconmentioning

confidence: 99%

Design and Synthesis of Functional Silsesquioxane-Based Hybrids by Hydrolytic Condensation of Bulky Triethoxysilanes

Mori

2012

International Journal of Polymer Science

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This paper presents a short overview of recent advances in the design and synthesis of organic-inorganic hybrids using silsesquioxane-based nanoparticles having nanometer size, relatively narrow size distribution, high functionalities, and various characteristic features, mainly focusing on our recent researches related to the subject. A highlight of this paper is the water-soluble silsesquioxane-based nanoparticles, including hydroxyl-functionalized and cationic silsesquioxanes, which were synthesized via the one-step condensation of the bulky triethoxysilane precursors. The design and synthesis of R-SiO1.5/SiO2and R-SiO1.5/TiO2hybrids by hydrolytic cocondensation of a triethoxysilane precursor and metal alkoxides are briefly introduced. This paper also deals with recent results in stimuli-responsive hybrids based on the water-soluble silsesquioxane nanoparticles and fluorinated and amphiphilic silsesquioxane hybrids.

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