Study On Mechanical Properties Of 3D Printed ABS Material Reinforced By Inorganic Fillers

3D printing technology has been widely used in the production of modern industrial parts due to its advantages of low cost,easy operation and low complexity.Recently,with the improvement of product manufacturing process performance requirements,the mechanical properties of 3D printed parts have also received widespread attention,among them,the main factors affecting the mechanical properties of 3D printed parts are the parameters and the properties of the printing materials.Therefore,based on FDM(Fused Deposition Modeling)3D printing technology,this paper discusses the two aspects uses experimental analysis.Process parameters:The influences of FDM parameters on the mechanical properties and failure mechanism of ABS(Acrylonitrile-Butadiene-Styrene)were explored.In order to optimize parameters,experimental chose three level of layer thicknesses(0.1mm,0.2mm,0.3mm)and three filling rates(70%,80%,90%)and three printing speeds(30mm/min,40mm/min,50mm/min).And7)7)₉3⁴orthogonal test was designed,and the experimental results were evaluated by SNR,ANOVA and Main effect analysis.ANOVA shows that the tensile strength of ABS increases with the increase of layer thickness and filling rate,and increases first and then decreases with the increase of printing speed.Through the Main effect analysis,theoretical verification and experimental verification,the key parameters of the printer are optimized:the layer thickness is 0.1mm,the filling rate is 80%and the printing speed is40mm/min.At this time,the ABS obtains the best tensile strength.The relationship between tensile strength,printing time and FDM parameters was discussed.It was found that the tensile strength increases with the printing time,and the layer thickness was a significant factor affecting the printing time,and its contribution rate was up to 92.92%.Material properties:the influence of different kinds of inorganic fillers on ABS was studied and the inorganic filler reinforced ABS material with higher strength was obtained.Five kinds of inorganic fillers/ABS composite consumables were prepared by filling ABS with micron particles HGB(Hollow Glass Bead),nanometer particles Z_nO?Al₂O₃?T_iO and GF(Glass Fiber),the key parameters combination after optimization were adopted for printing parameters,the composite material specimens were printed and tensile tests2 were carried out.The tensile strength,Elongation at break and Young's modulus of the mixed system were compared with ABS as evaluation indexes.It was found that the mechanical properties of ABS were significantly changed with the addition of inorganic fillers.Large diameter HGB particles increased the rigidity of ABS,which showed that the tensile strength and elongation at break of ABS material decreased,and Young's modulus increased.The filling of glass fiber increases the tensile strength.And he reinforcement effect of nanometer particle filling is the best,and the tensile strength,Young's modulus and elongation at break of ABS increase the most.T_iO had the best effect on the tensile strength of ABS,and the tensile strength increased by 35.33%.In conclusion,the experimental study of this paper shows that the reasonable configuration of the FDM parameters can effectively improve the mechanical properties of the printing specimen,but the printing cost will increased accordingly.It also was found that the mechanical properties of ABS material can be significantly improved by the inorganic filler.