• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

机械工程学报 ›› 2017, Vol. 53 ›› Issue (7): 138-144.doi: 10.3901/JME.2017.07.138

• 数字化设计与制造 • 上一篇    下一篇

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陶瓷面曝光快速成型工艺研究*

杨飞1, 连芩1,2,3, 武向权1, 李涤尘1, 靳忠民1   

  1. 1. 西安交通大学机械制造系统工程国家重点实验室 西安 710054;
    2. 西安交通大学快速制造国家工程研究中心 西安 710054;
    3. 西安交通大学高端制造装备协同创新研究中心 西安 710054
  • 出版日期:2017-04-05 发布日期:2017-04-05
  • 作者简介:

    杨飞，男，1992年出生。主要研究方向为增材制造与仿生制造。

    E-mail：fly8296@stu.xjtu.edu.cn

    连芩(通信作者)，女，1971年出生，博士，副教授，博士研究生导师。主要研究方向为增材制造与仿生制造。

    E-mail：lqiamt@mail.xjtu.edu.cn

  • 基金资助:
    * 国家自然科学基金(51323007， 51375371)、陕西科技厅 (2016GY-201， 2016KTZDGY07-01)和广东科技厅(2016B090915002)资助项目; 20160409收到初稿，20161114收到修改稿;

Ceramics Fabrication Using Rapid Prototyping of Mask Projection Stereolithography

YANG Fei1, LIAN Qin1,2,3, WU Xiangquan1, LI Dichen1, JIN Zhongmin1   

  1. 1. State Key Laboratory for Manufacturing Systems Engineering， Xi’an Jiaotong University， Xi’an 710054;
    2. Rapid Manufacturing National Engineering Research Center， Xi’an Jiaotong University， Xi’an 710054;
    3. Collaborative Innovation Center of High-End Manufacturing Equipment， Xi’an Jiaotong University， Xi’an 710054
  • Online:2017-04-05 Published:2017-04-05

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摘要：

利用投影机中微小反射镜阵列(Digital micromirror device，DMD)形成投影图案，以发光二极管紫外光(UV-LED)作为光源，建立了陶瓷面曝光快速成型试验系统。利用该系统研究了自开发的可光固化磷酸钙陶瓷浆料的光固化性能，确定了其 临界曝光强度为14.24 mJ/cm2，透射深度为149 μm;优化了面曝光陶瓷成型的工艺参数，即分层厚度100 μm，曝光强度 54 mJ/cm2，曝光时间3 s，并实现了带有复杂网状结构的陶瓷多孔支架的制造。该工艺所成型的陶瓷零件经烧结后，其致密表面和内部未见有裂纹和较大孔洞，压缩强度高达63 MPa，可满足骨组织工程支架的机械性能要求。所述的面曝光快速成型工艺可直接成型多孔以及复杂结构的陶瓷零件，有望为陶瓷骨组织支架的制造提供新的发展方向。

关键词: 光固化, 面曝光, 陶瓷, 3D打印

Abstract:

The aim of this study is to present a ceramics forming technique based on the mask projection stereolithography with a UV-LED light, which can impel homemade photo-curable β-TCP ceramic slurry to cure. During the manufacturing, the various masks can be dynamically created by a digital micromirror device (DMD) through switching on and off the small mirrors. By experiments, the photo curable properties of homemade ceramic slurry are determined for the critical exposure intensity(Ec) of 14.24 mJ/cm2 and the penetration depth (Dp) of 149 μm. Process optimizing parameters are determined for 100μm layer thickness, 54 mJ/cm2 exposure intensity and 3 s exposure time. Porous ceramic scaffolds were fabricated with complex network structure. No cracks and obvious holes are found in the surface and interior of sintered ceramic parts, whose compressive strength is up to 63 MPa, which can satisfy the mechanical requirement of the bone tissue engineering application. Therefore, the mask projection for ceramic stereolithography presented in this work is feasible to directly print porous and complex structure of ceramic green parts, which is expected to simply make ceramic bone scaffolds with complex structure.

Key words: ceramics, mask projection, stereolithography, 3D printing

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