摘要
为研究3D打印工艺对聚醚醚酮(PEEK)介电性能的影响,基于熔融沉积成型技术,选择多种工艺参数进行单因素实验,针对喷头温度、基板温度、打印速度、层厚、腔室温度等工艺进行研究.实验结果表明:在喷头温度400 ℃、基板温度140 ℃、打印速度30 mm/s、层厚0.1 mm、腔室温度120 ℃时PEEK样件介电常数最低;1～100 MHz频段内频率对介电常数无影响;1～40 MHz频率内,各工艺参数测试得到的PEEK介电损耗角正切均大幅波动;在40～100 MHz频率内,PEEK介电损耗角正切均呈现波动上升的趋势.该研究结果将为天线PEEK介质层的结构设计和制造提供依据.
Abstract
In order to study the influence of 3D printing process on the dielectric properties of PEEK,multiple process parameters were chosen to perform a single factor experiment by fused deposition molding technology,and the technologies of nozzle temperature,substrate temperature,printing speed,layer thickness and chamber temperature etc.were studied.The experiment results show that the dielectric constant of PEEK products is the lowest when the nozzle temperature is 400 ℃,the substrate temperature is 140 ℃,the printing speed 30 mm/s,the layer thickness 0.1 mm,and the chamber temperature 120 ℃.The frequency in the 1-100 MHz frequency band has no effect on the dielectric constant.Within the frequency of 1-40 MHz,the dielectric loss tangent of PEEK measured by each process parameter fluctuates drastically,and within the frequency of 40-100 MHz,the fluctuation of dielectric loss tangent of PEEK goes up.The research results provide a basis for the structural design and manufacture of the PEEK dielectric layer of antenna.
国家科技期刊平台
NSTL
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