Abstract: Based on the principle of digital light processing (DLP)3D printing technology, the rheological properties and curing characteristics of diamond-resin slurries with various diamond particle sizes were systematically investigated, as well as the mechanical properties of the diamond-resin composites prepared by DLP. The results show that increasing the particle size can reduce the specific surface area and surface energy, effectively reduce the viscosity of the diamond-resin slurry and improve the fluidity of the slurry during the DLP printing process. Combined with the Beer-Lambert model equation, it was found that, under the same exposure energy, slurry with larger diamond particle size possess a higher cure depth, which is beneficial to the interlayer bonding strength of the composites made therefrom. However, the excess cure width also increases with the particle sizes, leading to a decrease in printing accuracy. Results from the mechanical performance test of the diamond-resin composite indicate that increasing the particle size improves the shore hardness of the composite little, whereas it is beneficial to improve the fle-xural strength and elastic modulus of the composite. In this work, diamond-resin composites with different particle sizes of diamond powder were prepared via DLP 3D printing technology, providing an experimental reference for the fabrication of ultraviolet-curable resin-bonded diamond tools by stereolithography 3D printing in the future.
杨温鑫, 孟晓燕, 邓欣. 粉体粒径对数字光处理3D打印金刚石复合材料性能的影响[J]. 材料导报, 2023, 37(12): 21120211-6.
YANG Wenxin, MENG Xiaoyan, DENG Xin. Effect of Powder Particle Size on the Properties of Diamond Composites Fabricated by Digital Light Processing 3D Printing. Materials Reports, 2023, 37(12): 21120211-6.
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2023, Vol. 37 
