Electron beam thermosetting resin 3D printing and application thereof

Abstract

The invention discloses a method for realizing 3D printing by using an electron beam thermosetting resin material. Resin is conventional thermosetting resin, a heat source is a fine micro-nano array electron beam source specially applied to rapid curing of the thermosetting resin; as for the resin fully paved with substrates, an electron beam heating source is controlled by adopting single fine electron beam quick scanning or large-area electron beam sources, switches or other mechanical means, thermal curing of the resin is achieved, and next-layer resin coating, full tiling and selective thermal curing are carried out, and a 3D printing process is achieved. A current thermosetting 3D printing technology cannot meet the high-precision 3D printing requirement; a high-precision 3D printinglight-curing 3D printing technology is achieved, photocurable resin or an optical system are expensive, and widespread application and popularization are difficult to achieve. The method achieves fine3D printing of the thermosetting resin, and the electron beam technology is applied to a 3D printing process of the resin material.

Description

technical field [0001] The invention belongs to the field of true 3D printing additive manufacturing, and specifically relates to the design, manufacture, process, and product development and application of a 3D printing device that uses electron beam heating and curing resin to realize 3D printing of fine micro-nano structure products. Background technique [0002] 3D printing technology has received more and more attention and has been initially applied in many fields. The reason is that, first, 3D printing technology is the fusion of computer image processing, stereoscopic imaging and decomposition, advanced materials, precision machinery and other new technologies. It has a strong technical allure; second, 3D printing belongs to additive manufacturing. In the process of product manufacturing, there is no discarding or useless consumption of materials, which meets the current trend needs of energy saving, environmental protection and efficient development; third, it is esp...

AI Technical Summary

Problems solved by technology

[0003] At present, 3D printing of resin materials is the most developed and applied. For thermosetting resins or hot-melt resin materials, because of their low cost, they have been applied on a large scale in the fields of models, toys, decorations, etc., becoming the industrial application of 3D technology. However, whether it is liquid resin thermosetting molding or solid resin melting molding, due to reasons such as heat source technology, conventional thermosetting 3D printing technology cannot achieve high-end product processing with high precision and micro-nano resolution.

At present, photosensitive resins can achieve high-precision 3D printing. However, on the one hand, photosensitive resins are expensive. On the other hand, even if very expensive precision light sources are used, the printing accuracy is at most up to the micron level, and it is impossible to achieve nanometer precision. 3D printing

[0004] When electron beam technology is applied to 3D printing, due to the very high energy density of conventional electron guns, it is generally only applied to 3D printing of metal and refractory materials, and cannot be applied to thermosetting molding of resin materials.

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