连续面曝光3d打印制备sioc陶瓷工艺研究
首发时间:2025-03-10
摘要:陶瓷材料因其具有高熔点、高硬度、高耐磨性和耐腐蚀等特性被广泛应用在航空航天、机械电子和生物医疗等各个领域,但目前传统工艺制备复杂精细陶瓷结构仍存在挑战。光固化3d打印技术和聚合物衍生陶瓷(pdcs)技术的结合,为实现高精度精细陶瓷结构的制备提供了新策略,所制备的聚合物衍生陶瓷已经在热电、电磁屏蔽和电化学储能等领域展开了大量的应用研究。但是目前传统光固化3d打印仍存在弊端,如在每一层固化完成后需与离型膜进行缓慢分离,从而降低了打印效率;打印结构表面存在"台阶效应",增大了样件的表面粗糙度。针对上述问题,本文提出了一种利用连续面曝光3d打印工艺制备碳氧化硅(sioc)陶瓷的新方法,通过制备复合富氧膜和低粘度的光敏陶瓷前驱体浆料实现连续3d打印,提高了打印效率,并成功制备了微观形貌良好的sioc陶瓷,与液晶显示(lcd)3d打印技术对比,解决了"台阶效应"问题。所配制的光敏陶瓷前驱体浆料陶瓷产率为51.25%,x、y、z方向收缩率分别为27.56%、27.4%、27.48%。对sioc陶瓷力学性能进行测试表征,其中维氏硬度为448.3hv,通过senb法测得断裂韧性为0.83mpa m1/2,sioc陶瓷体心立方结构的抗压强度为12.07mpa,为聚合物衍生陶瓷的定制化设计与性能调控提供了新的技术路径。
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research on the process of fabricating sioc ceramic by continuous dlp 3d printing
abstract:ceramic materials have found extensive applications across diverse fields including aerospace, mechanical electronics, and biomedical sectors due to their exceptional properties such as high melting point, superior hardness, excellent wear resistance, and corrosion resistance. however, conventional manufacturing techniques face significant challenges in fabricating complex and intricate ceramic structures. the integration of photopolymerization 3d printing technology with polymer-derived ceramics (pdcs) has emerged as a novel strategy for achieving high-precision ceramic fabrication. polymer-derived ceramics synthesized through this combined approach have been extensively investigated for applications in thermoelectric, electromagnetic shielding, and electrochemical energy storage systems. nevertheless, traditional photopolymerization 3d printing still presents limitations, including the necessity for slow separation from the release film after each layer curing, which compromises printing efficiency, and the presence of "stair-stepping effects" that increase surface roughness. to address these challenges, this study proposes an innovative method for fabricating silicon oxycarbide (sioc) ceramics using continuous dlp 3d printing technology. by developing composite oxygen-rich film and low-viscosity photosensitive ceramic precursor slurries, we have achieved continuous 3d printing with enhanced efficiency. the method successfully produces sioc ceramics with favorable microstructural morphology and effectively eliminates stair-stepping effects compared to liquid crystal display (lcd) 3d printing technology. the formulated photosensitive ceramic precursor slurry demonstrates a ceramic yield of 51.25%, with shrinkage rates of 27.56%, 27.4%, and 27.48% in the x, y, and z directions, respectively. mechanical characterization reveals a vickers hardness of 448.3 hv, fracture toughness of 0.83 mpa m1/2 measured by single-edge notched beam (senb) method, and compressive strength of 12.07 mpa for the body-centered cubic structure. this approach provides a new technological pathway for the customized design and performance regulation of polymer-derived ceramics.
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连续面曝光3d打印制备sioc陶瓷工艺研究
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