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面曝光快速成型过程中树脂收缩变形

黄宽, 陈继民, 方浩博, 袁艳萍

黄宽, 陈继民, 方浩博, 袁艳萍. 面曝光快速成型过程中树脂收缩变形[J]. 北京工业大学学报, 2015, 41(12): 1828-1831. DOI: 10.11936/bjutxb2015070043
引用本文: 黄宽, 陈继民, 方浩博, 袁艳萍. 面曝光快速成型过程中树脂收缩变形[J]. 北京工业大学学报, 2015, 41(12): 1828-1831. DOI: 10.11936/bjutxb2015070043
HUANG Kuan, CHEN Ji-min, FANG Hao-bo, YUAN Yan-ping. Shrinkage Deformation Research of Photosensitive Resin in Mask Projection Stereolithography[J]. Journal of Beijing University of Technology, 2015, 41(12): 1828-1831. DOI: 10.11936/bjutxb2015070043
Citation: HUANG Kuan, CHEN Ji-min, FANG Hao-bo, YUAN Yan-ping. Shrinkage Deformation Research of Photosensitive Resin in Mask Projection Stereolithography[J]. Journal of Beijing University of Technology, 2015, 41(12): 1828-1831. DOI: 10.11936/bjutxb2015070043

面曝光快速成型过程中树脂收缩变形

基金项目: 

北京市自然科学基金资助项目(Z140002)

北京市科技创新资助项目(Z141100002814011)

详细信息
    作者简介:

    黄宽(1990-), 男, 硕士研究生, 主要从事激光微纳加工、激光快速成型方面的研究,E-mail:huangkuan@emails.bjut.edu.cn

  • 中图分类号: TN23;TH164

Shrinkage Deformation Research of Photosensitive Resin in Mask Projection Stereolithography

  • 摘要: 为了研究面曝光固化过程中树脂收缩行为对成型零件变形的影响,设计并制作了基于DLP(digital light procession)技术的面曝光固化快速成型机,分析了光固化过程中树脂收缩的原因.对树脂在自由液面和约束液面2种曝光情况下的收缩行为进行实验,同时将固化成型件进行二次固化.结果表明:自由液面曝光时,B5B型树脂的收缩量与曝光时间成正比,最终稳定在4%左右,而在约束液面情况下由于溢出光固化效应导致收缩量随曝光时间增加而减小.二次固化过程中仍会产生收缩,收缩量占收缩总量的40%~50%.
    Abstract: The aim of this research is to analyze the influence of shrinkage behavior on the deformation of forming parts in mask projection stereolithography. A mask projection stereolithography machine based on DLP( digital light procession) technology was designed, and the shrinkage of photosensitive resin during light-cured process was analyzed. The shrinkage behavior of resin in different exposure situations, free-surface and constrain-surface, and also in secondary curing process was studied. The result shows that in free-surface, the shrinkage of B5B type resin is proportional to the exposure time, eventually it stabilizes at around 4%. When it is in constrain-surface, the overflowed light curing effect leads to shrinkage which decreases with exposure time increased, and the shrinkage generated in the secondary curing process accounts for 40% ~50% of total.
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出版历程
  • 收稿日期:  2015-07-13
  • 网络出版日期:  2023-01-10

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