Press Bonding of Heated Porous Aluminum and Polycarbonate

Abstract

Porous aluminum is lightweight and has good shock absorption properties. Therefore, by joining thermoplastic resin, which has been widely used in recent years, to porous aluminum, it is possible to achieve both strength and weight reduction while providing shock absorption properties. In this study, bonding of porous aluminum and a polycarbonate plate was performed. The polycarbonate plate was pressed against the heated porous aluminum to bond them. From the tensile test of the bonded specimen, it was found that bonded specimen, which was bonded at 400℃ can achieve higher strength than that at 300℃ owing to the anchor effect. The bonded specimen, which was bonded at 400℃, exhibited fracture at the porous aluminum part, while the bonded specimen, which was bonded at 300℃, exhibited fracture at the bonded surface.

Fig. 7　Appearance, X-ray CT images and fracture surfaces of bonded specimens. Arrows in X-ray CT images indicate areas where polycarbonate has penetrated into the pores of porous aluminum.