聚醚醚酮熔融沉积成形强度工艺参数的优化

Optimizing Fused Deposition Molding Process Parameters for Improving Forming Strength of Polyetheretherketone

为了提高聚醚醚酮(Poly-ether-ether-ketone,PEEK)熔融沉积成形(Fused deposition modeling,FDM)强度,利用正交试验方法研究了FDM打印工艺参数与力学性能之间关系。对喷嘴温度、打印速度和填充角度等影响因素下PEEK样件的力学性能进行对比分析,研究现有条件下最优打印参数,提高成形质量。结果表明各个工艺参数对试验结果的影响程度不相同,影响最为明显的是喷嘴温度,其次是填充方式,打印速度对试验结果的影响较小。最佳工艺参数组合为:喷嘴温度420℃,打印速度10mm·s^?1,填充方式0°。改善工艺参数后可提高PEEK成形件的强度,制造出的个性化假体的力学性能能够满足临床使用的要求。一例PEEK假体已经成功应用于临床,为其在临床上的广泛应用奠定基础。

In order to improve the forming strength of polyether-ether-ketone(PEEK),the relationship between the process parameters of fused deposition modeling(FDM)and mechanical properties is studied by orthogonal test.The mechanical properties of PEEK sample under the influence factors of nozzle temperature,printing speed and filling angle are compared and analyzed,and the optimal printing parameters under the existing conditions are studied to improve the forming quality.The results showed that the effects of various process parameters on the experimental results are different,the most obvious is the temperature of the nozzle,the second is the filling mode,and the printing speed has little effect on the experimental results.Optimum technological parameters combination as follow:the nozzle temperature is 420℃,the printing speed is 10 mm·s^?1 and 0°filling way.The strength of PEEK component can be increased by improving the process parameters,the mechanical properties of the manufactured customized implants can meet the requirement of clinical application.One case of customized PEEK implant have been successfully used in clinical and have achieved good results which lays a foundation for its wide application in clinic.