A glass plate including a first surface and a second surface facing the first surface, in which, when Vickers indentation is performed with a force of 5 N on the first surface or the second surface, no cracks are generated or c/l<0.50, and when a fracture toughness value is defined as KIC, a crack length is defined as a, a Young's modulus is defined as E, an average thermal expansion coefficient at 20° ° C. to 300° C. is defined as α, and a temperature difference between a temperature TS1 on a first surface side and a temperature TS2 on a second surface side is defined as ΔT, the expression (1) is satisfied under conditions of 500× 10−6≤a≤2000×10−6 and 20≤ΔT≤45KICπa>EαΔT(1)
GLASS PLATE, VEHICULAR WINDOW GLASS, AND LAMINATED GLASS
22.08.2024
Patent
Elektronische Ressource
Englisch
IPC: | B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / C03C Chemische Zusammensetzungen für Gläser, Glasuren oder Emails , CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS |
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