The compressive shear strengths of adhesive-bonded joints on laser-sintered PA12 (Polyamide 12) components were investigated with adhesives from different classes. In order to raise the joint quality, the joining parts were pretreated with atmospheric-pressure plasma or flame treatment. The joints were subsequently aged in an accelerated process. It has been shown that, in part, adhesives can penetrate into the surface structures of the laser-sintered components, thus leading to special fracture patterns. Due to the pre-treatment of the joining faces, it was possible to substantially raise the strengths of some adhesive-bonded joints. The best ageing stability was shown by adhesive-bonded joints with epoxy adhesives.
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