| Curved conformal electronics have broad application prospects in biomedical,wearable electronics,aerospace and many other fields.In order to solve the problems of complex process and low resolution in the preparation of curved conformal electrons,a five-axis linkage electric field driven jet 3D printing technology is proposed in this thesis,and a five-axis linkage electric field driven jet 3D printing system is developed.it is used to realize the efficient and high resolution manufacture of curved conformal electronic devices.In this thesis,the system construction,numerical simulation,manufacturing process flow,process parameters and the application of typical curved surface conformal electronics are studied in detail.this thesis focuses on the generation of print path program in printing process and the influence of process parameters on surface printing,and focuses on the application of this technology in typical grid surface electronics and surface surface electronics,and verifies the feasibility of the proposed method.The main research work of this thesis is as follows:(1)A five-axis linkage electric field driven jet 3D printing system is developed.The system module mainly includes five-axis motion module,nozzle module,machine tool probe module,voltage module,air pressure module,software system module,camera observation module and other components.After module assembly and software system debugging,a five-axis linkage electric field driven jet 3D printing system is developed,which integrates the functions of positioning,printing,observation and program processing.(2)The electric field distribution of five-axis linkage electric field driven jet 3D printing is simulated by using multi-physical field simulation software(Comsol Multiphysics).The technological process of curved surface printing is described,and the influence of process parameters on curved surface printing is studied.Different curved surface graphic structures are prepared according to the technological process and technological parameters.Through electric field simulation and experiments,the printing effects of surface illegal conformal printing and surface normal conformal printing are compared,and it is concluded that five-axis linkage electric field driven jet 3D printing has better printing effect in curved surface printing.The method of generating the surface path program in the printing process is described in detail,and the three-dimensional scanning surface model and drawing the graphic path are described in detail.The nozzle motion path code of the adaptation software system is generated by using the five-axis surface milling module and post-processing module in Hyper MILL software,and then the nozzle motion path code is simulated.The effects of different process parameters(voltage,air pressure,speed,height)on curved surface printing and the relationship between silver linewidth and silver wire thickness and silver metal surface at different printing speed were studied.Finally,different curved surface graphic structures are prepared according to the printing process and process parameters.(3)Using five-axis linkage electric field driven jet 3D printing to print grid surface electrons,the curved surface transparent electric heating glass was prepared.The curved surface transparent electric heating glass is prepared by using curved surface optical glass as printing substrate and conductive nanometer silver paste as printing material.the printed metal grid has good consistency,there are no nodes and broken lines,and the surface morphology of silver wire is good.The optoelectronic properties,adhesion and heating properties of curved surface transparent electric heating glass are tested.the test results show that curved surface electric heating glass has good optoelectronic properties,adhesion and heating properties.which verifies the feasibility of five-axis linkage electric field driven jet 3D printing surface conformal electrons.(4)The five-axis linkage electric field driven jet 3D printing is used to print surfaceshaped surface electrons,and the curved conformal slot antenna is fabricated on the curved glass.A curved conformal slot antenna used in 2.4GHz and 5.5GHz bands is designed.The antenna size parameters are optimized by HFSS electromagnetic simulation software.The effects of antenna size parameters on antenna reflection coefficient and antenna impedance are simulated and analyzed.According to the optimal size of the antenna,the antenna characteristic parameters are simulated and analyzed.The conductivity of the antenna is theoretically analyzed,and the minimum print skin thickness is determined.The curved conformal slot antenna is manufactured by using the five-axis linkage electric field driven jet 3D printing equipment,and the basic performance of the curved conformal slot antenna is tested.the test results agree with simulation results substantially,and show good signal reception and transmission ability in the application scene test. |
