Preparation method of spatial multilayer wave-absorbing structure based on 3D printing

• Main Authors: YIN YIFA, CAO YI, YANG DONG, ZHANG ZHIKUN, LI DICHEN
• Format: Patent
• Language: Chinese; English
• Published: 03.11.2020
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a preparation method of a spatial multilayer wave-absorbing structure based on 3D printing. The preparation method comprises the steps that firstly, a three-dimensional modelof the multilayer wave-absorbing structure is drawn through three-dimensional drawing software, each layer of structure is composed of a plurality of structure units, and each structure unit is divided into a frame structure part and a wave-absorbing filler part; the drawn three-dimensional model is imported into a 3D printer to obtain an instruction file for 3D printing, and then the multilayer wave-absorbing structure is prepared by a multi-nozzle system; and main nozzles are used for printing the frame structure parts, and auxiliary nozzles are used for printing the wave-absorbing filler parts. According to the preparation method, the filler parts are prepared from composite materials with high-content wave-absorbing agents, so that the high wave-absorbing performance of the whole structure is ensured; and mean