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相关概念视频

Members Made of Elastoplastic Material01:19

Members Made of Elastoplastic Material

94
The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
As the bending moment...
94

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相关实验视频

Updated: Jun 22, 2025

Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures
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具有特殊强度和性的3D打印弹性体

Zizheng Fang1,2, Hongfeng Mu1, Zhuo Sun1

  • 1State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China.

Nature
|July 3, 2024
PubMed
概括

这项研究引入了一种用于先进弹性体的新型3D照片打印树脂. 这种新材料具有卓越的抗拉强度和性, 克服了3D打印聚合物性能的局限性.

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科学领域:

  • 材料科学
  • 聚合物化学
  • 制造工程

背景情况:

  • 三维 (3D) 打印提供了设计自由,但效率低,聚合物机械性能差.
  • 现有的超快3D打印方法提高了速度,但并没有提高材料性能.
  • 目前的印刷限制限制了高性能聚合物的分子设计.

研究的目的:

  • 为高性能弹性体开发可3D打印的树脂化学.
  • 解决3D打印聚合物的机械性能限制.
  • 为了实现3D打印材料的大量制造应用.

主要方法:

  • 开发一种新的可照片打印的树脂配方.
  • 使用动态共价键进行聚合物网络重新配置.
  • 机械性能 (拉力强度,性) 和微型结构特征的表征.

主要成果:

  • 实现了94.6MPa的拉伸强度和310.4MJ/m3的性.
  • 已证明的机械性能超过了以前的所有3D打印弹性体.
  • 确定了使等级化结合,微相分离和相互透的动态共价键.

结论:

  • 这种新树脂化学方法克服了3D打印聚合物性能方面的关键局限性.
  • 动态共价键对于实现卓越的机械性能至关重要.
  • 这一进步为使用3D打印技术的大规模制造铺平了道路.