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相关概念视频

Vaporization01:18

Vaporization

The physical form of a substance changes by changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. For vaporization to occur, kinetic energy must be greater than the intermolecular forces that keep molecules bonded. The amount of energy needed to vaporize a quantity of liquid at a given pressure and a constant temperature is called the heat of vaporization. When...

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具有蒸汽诱导相位分离功能的多功能直接墨水写作.

Marc Sole-Gras1, Bing Ren1, Benjamin J Ryder2

  • 1Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, USA.

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|April 9, 2024
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概括

一种新的蒸汽诱导相位分离3D打印 (VIPS-3DP) 方法使得聚合物,金属和复合材料的室内条件打印成为可能. 这种经济和环保的方法可以在印刷材料中实现复杂的结构和可调节的多孔性.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 添加剂制造 添加剂制造 添加剂制造
  • 聚合物科学 聚合物科学

背景情况:

  • 开发用于3D打印不同材料的简单,经济和多功能方法,如聚合物,金属和复合材料仍然是一个重大挑战.
  • 现有的3D打印技术往往需要高温或特殊环境,这限制了它们的适用性并增加了成本.
  • 越来越重要的是,需要可持续的制造工艺,减少对环境的影响.

研究的目的:

  • 引入一种新的三维 (3D) 打印方法,称为蒸汽诱导相分离3D打印 (VIPS-3DP),用于制造聚合物,金属和复合材料.
  • 证明VIPS-3DP在室内条件下运行的能力,为传统方法提供更简单,更经济的替代方案.
  • 以展示使用这种新印刷技术创建复杂结构,空间调节的多孔结构和功能分级材料的潜力.

主要方法:

  • 使用聚合物基墨水溶解在低挥发性溶剂中,沉积在含有雾化非溶剂的环境中.
  • 采用蒸汽诱导相分离 (VIPS) 过程,其中非溶剂诱导受控的溶剂提取和聚合物的现场硬化.
  • 将VIPS-3DP工艺扩展到聚合物基金属油墨和复合粉末载聚合物油墨,然后进行热处理以获得最终部件.
  • 通过打印路径策略和无机空间持有器实现对线程间和线程内孔隙的控制.

主要成果:

  • 在室内条件下使用VIPS-3DP方法成功3D打印复杂的聚合物结构.
  • 在印刷后进行热处理后生产金属和复合材料零件的VIPS-3DP的演示.
  • 通过控制不同尺度上的多孔性来制造空间调节的多孔结构和功能分级材料.
  • 确认可控的溶剂提取和现场硬化,使有效的材料沉积和结构形成.

结论:

  • 蒸汽诱导相位分离3D打印 (VIPS-3DP) 为聚合物,金属和复合材料的增材制造提供了一个多功能,室内条件和成本效益的平台.
  • VIPS-3DP过程有助于创建复杂的几何形状和先进的材料功能,包括可调节的多孔性和分级组合.
  • 在VIPS-3DP中使用的低挥发性溶剂允许溶剂回收,大大提高了印刷过程的环境可持续性.