Thin glass in facades: adhesive joints for thin glass composite panels with 3-D printed polymer cores

Thin glass is typically applied for displays on devices. Also, it enables new applications in architecture for example in glass facades. Due to its high strength and small thickness (0.1-2 mm) thin glass is very flexible, lightweight and easily bendable. However, thin glass cannot simply replace conventional facade glazing. To avoid too high deformations of the glazing as a result of the high flexibility, it has to be stiffened. An appropriate solution is the use of sandwich panels consisting of two thin glass panes with an inner polymer core. To achieve lightweight facade elements, 3-D printed polymer structures are used instead of a solid core. The present study is dedicated to find a suitable adhesive to bond the polymer core to the thin glass. The mechanical and thermomechanical performances of different combinations of typical 3-D printed polymers and transparent adhesives are evaluated. In addition, the influences of temperature and UV aging that occur in the area of the facades are investigated.