Laminating hardened glass for safety usage

Abstract EN

In this work ion-exchange and laminating process were used for strengthening soda-lime glass which done in fused KNO3 bath.

Glass specimens were totally submerged in the bath.

The temperature and time of process were varied in order to make stress profile and to determine the optimum conditions.

It is found that ion-exchange process raising fracture strength of glass to 285.4 % at 430οC and 273.7 % at 450οC.

It is also found that the hardness values increased to 16 % at 430οC and 16.77 % at 450οC.

These values were extracted after 4 hours and 2 hours of dipping in molten salt respectively.

As a result of laminating process, laminated glass has better properties than single glass.

The applied load was 0.063KN for single layer while with increasing glass layers to six it became1.25KN.

Using strengthened glass in lamination process contributes to improve applied load where it was 0.24KN for single layer and it became 1.91KN for six glass layers.