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3D打印弹性体微结构的基准测试机械性能

Or Eivgi1, Clara Vazquez-Martel1, Jaroslav Lukeš2

  • 1Institute for Molecular Systems Engineering and Adv. Mater. (IMSEAM), Heidelberg University, Im Neuenheimer Feld 225, 69120, Heidelberg, Germany.

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概括

一个新的微观纳米印记协议准确地描述了软3D打印材料. 这种方法考虑了粘附力,防止过度估计弹性质微结构中的机械性质.

关键词:
在PDMS中使用PDMS.添加剂制造 添加剂制造 添加剂制造弹性体的弹性体是什么机械性能 机械性能 机械性能纳米印花的使用方法两个光子聚合的聚合物.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 机械工程 机械工程
  • 添加剂制造 添加剂制造 添加剂制造

背景情况:

  • 由于缺乏标准化的方法,对软3D打印材料的微尺度机械性能进行表征是具有挑战性的.
  • 现有的协议可能会因为未解决的粘附力而高估性能.

研究的目的:

  • 开发和验证软3D打印材料的标准化微观纳米印记协议.
  • 准确测量弹性体微结构的机械性能,考虑粘附效应.

主要方法:

  • 采用了带球状的入孔尖和修改的梯形位移形状的配置,并配有起升段.
  • 采用纳米-约翰逊-肯达尔-罗伯茨模型进行数据分析.
  • 通过使用伯科维奇提示和奥利弗-法尔模型与文献协议进行了对比.

主要成果:

  • 开发的协议证明了基于聚二甲基 (PDMS) 的油墨的准确表征.
  • 发现粘附力显著影响机械性能测量,导致其他方法高达80%的高估值.
  • 与现有的最先进的协议相比,观察到结果的显著差异.

结论:

  • 一个标准化的微尺度纳米印记协议对于软3D打印材料的可靠表征至关重要.
  • 精确的测量需要考虑粘附力,正如纳米-约翰逊-肯达尔-罗伯茨模型所示.
  • 这项工作使微型软3D打印结构的机械性质评估简单而准确.