Abstract: With slag powder and glass fibers as fillers in PA6 matrix, a ternary composite was prepared. Scanning electron microscope (SEM) was utilized to observe its fracture morphology. The effect of mass ratio of slag powder/glass fiber ratio and their size on the tensile strength, impact toughness of the composites was studied. It showed that when the slag powder/glass fiber ratio was 1:3, the amount of the fillers was 30 %, the average particle size was 7 μm, the tensile strength reached 96.8 MPa. When the average particle size of slag powder was 15 microns, the ternary composite had an impact toughness of 8.31 kJ/m2, which was 132.4% that of neat PA6.

Key words: polyamide 6, glass fiber, slag powder, mechanical property