Study on bending deformation of ultra-thin floating glass plate

Cai, Limao; YiShui, Tian; Han, Zhengwei; Xiang, Zhilei

doi:10.1016/j.jnoncrysol.2020.120172

Cited by 4 publications

(2 citation statements)

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“…and photoelectric conversion, which puts forward higher requirements on the function of flexible glass, especially bending radius and scratch resistance. [3][4][5] As a brittle material, the actual strength of glass is typically 2-3 orders of magnitude lower than the theoretical strength, due to the existence and expansion of microcracks in glass. 6,7 When glass thickness is below 200 µm, impurities, defects, and any negative factors that reduce the mechanical strength of glass are magnified, resulting in UTG being broken more easily than ordinary glass.…”

Section: Introductionmentioning

confidence: 99%

“…Ultrathin glass (UTG) of thickness ≤200 µm not only exhibits basic characteristics of normal glass such as good chemical stability, excellent surface, and optical quality but also shows unique features of easy bending and light weight 1,2 . In recent years, UTG is widely used in various fields such as flexible display, OLED lighting, and photoelectric conversion, which puts forward higher requirements on the function of flexible glass, especially bending radius and scratch resistance 3–5 . As a brittle material, the actual strength of glass is typically 2–3 orders of magnitude lower than the theoretical strength, due to the existence and expansion of microcracks in glass 6,7 .…”

Section: Introductionmentioning

confidence: 99%

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Enhancing bending performance of ultrathin flexible glass through chemical strengthening

Mao,

Yuan,

Guo

et al. 2024

Int J of Appl Glass Sci

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Flexible glass with high bending strength is a remarkable component of flexible electronic displays. However, as a brittle material, its bending properties often do not meet requirements of application. To address this challenge, the application of chemical strengthening stands out as a viable approach to significantly bolster scratch resistance and bending strength in flexible glass. This study focuses on a conventional one‐step chemical strengthening method, employing molten potassium nitrate, to reinforce ultrathin aluminosilicate glass produced through the secondary down‐drawing thermoforming process. Effects of ion‐exchange temperature and time on mechanical properties of strengthened 110 µm flexible glass were investigated, and moreover, properties of strengthened ultrathin flexible glass with various thicknesses were compared. The results indicate that, after chemical strengthening at 380°C for 1 h, the compressive stress (CS) of 110 µm glass reaches 864.60 MPa, and the depth of layer is 15.86 µm, at which time the glass has the best bending performance and scratch resistance, and half of the faceplate spacing during glass breakage can be enhanced from 38.02 ± 2.7 to 8.40 ± 0.62 mm. For ultrathin flexible glass from 40 to 110 µm, after treatment at 380°C for 1 h, the CS of thick glass is higher than that of thin glass, and the enhancement of bending performance is better.

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