Mechanical and tribological properties of GB/GF/PA1212 fabricated by selective laser sintering
WU Ting1, WU Hong1, WEN Jiebin1,2
1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; 2. Polymer Product Line Group, Farsoon High Technologies Co., Ltd., Changsha 410221, China
Abstract：GB/GF/PA1212 composites were prepared by selective laser sintering (SLS) using of a mechanically blended mixture of polyamide (PA) 1212, glass fiber (GF) and glass beads (GB), where the GB and GF were acting as reinforcements. The tensile and tribological properties of SLS sintered parts were tested by a universal mechanical testing machine and a friction and wear tester to explore the influence of GB content on the properties of the composites, respectively. The results show that the presence of GB fillers at an appropriate proportion can improve the tensile properties and wear resistance of the composites. Especially, it can significantly improve the wear resistance. When the mass fraction of GB and GF is 40% and 10% respectively, the friction coefficient and wear rate of the composite are the lowest, which are 0.23 and 1.1×10-3 mm3/(N∙m) respectively.
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2022, Vol. 27 
