INVESTIGATION OF POLYURETHENE RESIN PERFORMANCE AS AN INTERLAYER IN LAMINATED GLASS SUBJECTED TO EXPLOSIVE LOADING

Abstract

This paper investigates the performance of polyurethane resin interlayer in laminated glass subjected to explosive loading. In this research, a total three glass panels, which consisted of one 7.52 mm thick annealed glass panel and two 7.52 mm thick laminated glass panels, were subjected to air explosive with explosive charge weights of 200 and 400 g at a fix standoff distance of 1,500 mm. The blast test results showed that the 7.52 mm thick annealed glass was damaged when subjected to peak overpressure of up to 250 kPa resulting from 200 g of explosive. Meanwhile, the 7.52 mm thick laminated glass with polyurethane resin interlayer survived the peak pressures of 250 and 650 kPa resulting from 200 and 400 g of explosive respectively. The polyurethane resin interlayer successfully retained the glass fragments and reduced the risk of injuries from the glass breakage. The results showed that the laminated glass panel using polyurethane resin as an interlayer has potential to be used as a blast resistant laminated glass panel.
Keywords: Field blast test; polyurethane resin; annealed glass; laminated glass; explosive loading.

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