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以可见光为燃料的聚合物用于3D打印.

Lynn M Stevens1, Nirvana T Almada1, Hyeong Seok Kim1

  • 1Department of Chemistry, The University of Texas at Austin, 105 East 24th Street, Austin, Texas 78712, United States.

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研究人员开发了使用可见光和近红外光进行3D打印的新光化学系统,克服了基于紫外线的方法的局限性. 这使得更快的,高分辨率的印刷与各种材料的先进制造.

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科学领域:

  • 光化学和聚合物科学 摄影化学和聚合物科学
  • 材料科学与工程 材料科学与工程
  • 增材制造 增材制造 增材制造

背景情况:

  • 目前的3D打印严重依赖紫外线,面临氧气敏感性和有限的材料范围等局限性.
  • "ZAP"小组通过开发用于光驱聚合的新型光化学系统来解决这些障碍.
  • 进步的目标是使用非传统光源实现快速,可控的塑料形成.

研究的目的:

  • 开发可见光和近红外 (NIR) 光响应的光化学系统,用于3D打印.
  • 克服基于紫外线的光聚合的局限性,包括速度,氧敏感性和材料兼容性.
  • 为了实现这些系统在高级增材制造应用的电池光聚合.

主要方法:

  • 开发二甲基 (BODIPY) 染料作为激素聚合的光电基发生器 (PRG).
  • 合成光基生成器 (PBGs) 用于二醇烯和二醇异酸盐树脂的非基性聚合.
  • 实施反应性光氧催化剂系统,增加氧气耐受性的添加剂,以及三重聚变技术.

主要成果:

  • BODIPY染料能够在几秒钟内使用可见光到NIR光有效聚合烯酸.
  • PBGs促进了各种树脂的光固化,扩大了材料能力超越了烯酸.
  • 实现快速,高分辨率的3D打印速度高达45mm/h,特征<100μm,与UV技术竞争.

结论:

  • 开发的光化学系统为 (多功能) 材料的增材制造提供了实际的解决方案.
  • 启用低能耗光源可以实现更环保,更具成本效益和更具多功能性的3D打印.
  • 铺平了印刷紫外线敏感化合物,纳米复合材料和多材料物体的道路,并具有精确的控制.