3D打印工艺参数对PLA试件拉伸强度的影响

Effects of 3D Printing Parameters on Tensile Properties of PLA

为了提高熔融沉积成型工艺打印件的力学性能以及减少打印时间成本,利用3ds Max三维建模软件,设计出打印力学试件的三维模型,结合单因素和正交试验分析,研究了填充角度、打印速度、打印温度、填充密度以及分层厚度对聚乳酸(PLA)试件拉伸强度的影响,并对试件拉伸强度进行测试。结果表明,各参数对3D打印PLA试件的影响大小为:填充密度>分层厚度>填充角度>打印温度>打印速度,且当打印分层厚度为0.3 mm,打印速度为80 mm/s,打印温度为210℃,填充密度为40%,填充角度为45°,试件具有最优的拉伸强度。

In order to improve the mechanical properties and reduce the printing time cost of the fused deposition process,3ds Max three-dimensional modeling software was used to design the three-dimensional model of printing mechanical specimen.Combined with single factor and orthogonal experimental analysis,the effects of delamination thickness,printing speed,printing temperature,filling density and filling angle tensile properties of poly(lactic acid)(PLA)specimens were studied,and the tensile properties of the model were tested.The results show that the influence of various parameters on the 3D printing specimen of PLA material is as follows:filling density>delamination thickness>filling angle>printing temperature>printing speed.When the printing delamination thickness is 0.3 mm,the printing speed is 80 mm/s,the printing temperature is 210℃,the filling density is 40%,and the filling angle is 45°,the specimen has the best tensile properties.