PEEK/CGF复合材料增材制造综合力学性能优化  

Comprehensive Mechanical Property Optimization of PEEK/CGF Composites by Additive Manufacturing

作　　者：严春晖 战丽 任永新[1,2] 刘晓军 邹东明 Yan Chunhui;Zhan Li;Ren Yongxin;Liu Xiaojun;Zou Dongming(State Key Laboratory of Advanced Forming Technology and Equipment of China Academy of Machinery Science and Technology,Beijing 100044,China;Beijing National Innovation Institute of Lightweight Co.,Ltd.,Beijing 100083,China;Beijing Research Institute of Mechanical&Electrical Technology Co.,Ltd.,Beijing 100083,China)

机构地区：[1]机械科学研究总院先进成型技术与装备国家重点试验室,北京100044 [2]北京机科国创轻量化科学研究院有限公司,北京100083 [3]北京机电研究所有限公司,北京100083

出　　处：《工程塑料应用》2023年第4期63-69,共7页Engineering Plastics Application

基　　金：中国机械总院技术发展基金项目(332201Q9,332202Q9)。

摘　　要：为提升连续玻璃纤维(CGF)增强聚醚醚酮(PEEK)复合材料增材制造样件综合力学性能,优化增材制造基础工艺参数,基于正交试验与单因素试验设计,通过力学性能测试,探究了喷头温度、平台温度、打印速度、层厚等工艺参数对综合样件力学性能的影响,获得PEEK/CGF增材制造成型工艺优化参数,进一步探究了重点工艺参数对PEEK/CGF样件力学性能的影响规律。结果表明,层厚与喷头温度对样件的综合力学性能具有显著影响,最优工艺参数组合为喷头温度440℃,平台温度160℃,打印速度2 mm/s,层厚0.35 mm。随喷头温度的增加,样件的综合力学性能先增大后减小,在440℃达到最大值;随层厚的减小,样件的力学性能逐渐增大,层厚为0.35 mm时样件的力学性能达到最大值。经试验验证,在最优工艺参数组合下样件综合力学性能达到最优,样件弯曲强度为351.59 MPa,层间剪切强度为34.96 MPa,拉伸强度为383.75 MPa。In order to improve the comprehensive mechanical properties of continuous glass fiber(CGF)reinforced polyetheretherketone(PEEK)composites by additive manufacturing and optimize the basic process parameters,on the basic of orthogonal experimental design and single factor experiment,the effects of nozzle temperature,bottom platform temperature,printing speed and layer thickness on the comprehensive mechanical properties of PEEK/CGF composites were investigated through mechanical properties test.The optimized process parameters of PEEK/CGF composite additive manufacturing were obtained and the influence of key process parameters on the mechanical properties of PEEK/CGF samples was further explored.The results show that the layer thickness and nozzle temperature have significant impact on the comprehensive mechanical properties of PEEK/CGF samples.The optimum process parameters are gained with nozzle temperature of 440℃,bottom platform temperature of 160℃,printing speed of 2 mm/s and layer thickness of 0.35 mm.With the increase of nozzle temperature,the mechanical property of PEEK/CGF samples first increase and then decrease,reaching the maximum at 440℃.With the decrease of layer thickness,the mechanical property of PEEK/CGF samples increase gradually.When the layer thickness is 0.35 mm,the mechanical property of the sample reaches the maximum value.The comprehensive mechanical property of PEEK/CGF samples are the best under the optimal process parameters.The bending strength is 351.59 MPa,the interlaminar shear strength is 34.96 MPa and the tensile strength is 383.75 MPa.

关 键 词：玻璃纤维 聚醚醚酮 增材制造 工艺优化 力学性能 

分 类 号：TH145.4[一般工业技术—材料科学与工程]