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Updated: Sep 18, 2025

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

Published on: January 19, 2016

建筑液晶弹性体格子具有可编程的能量吸收.

Rodrigo Telles¹, Julie A Mancini², Jorge-Luis Barrera²

¹John A. Paulson, School of Engineering and, Applied Sciences, and Wyss, Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, 02138, USA.

Advanced materials (Deerfield Beach, Fla.)

|June 23, 2025

概括

与相比,建筑液晶弹性体 (LCE) 格子的能量吸收显著提高,LCE材料在高拉伸率下高达18倍. 这项研究使得改变形状的LCE结构的新设计成为可能.

关键词:

活动格子是活跃的格子.直接墨水写作直接墨水写作能量吸收能量吸收液晶弹性体的液晶弹性体.形状变形,形状变形,形状变形.

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科学领域:

材料科学材料科学材料科学
聚合物化学聚合物化学
机械工程机械工程

背景情况:

液晶弹性体 (LCE) 是具有独特形状变形能力的先进材料.
了解它们在动态负载下的机械行为对于实际应用至关重要.

研究的目的:

为了制造和表征建筑LCE格子.
为了研究它们的能量吸收,刚性和形状在广泛的应变速率中发生的变化.
开发一个预测性计算模型.

主要方法:

直接墨水写作 (DIW) 用于制造具有流动诱导对齐的LCE格子.
机械测试在六个数量级的拉伸速率 (10^-3到10^3s^-1).
开发和验证一个有限元模型 (FEM).

主要成果:

与非半导体对应物相比,LCE网格显示出更高的能量吸收能力.
在测试的最高应变速率下,LCE与的能量吸收比率达到18倍.
FEM准确地预测了实验观察到的形状变形行为.

结论:

建筑LCE网格在能量吸收方面具有显著的优势,特别是在高张力率下.
开发的计算模型有助于预测和设计LCE网格力学.
这项工作为基于LCE的新型材料铺平了道路,这些材料具有量身定制的特性.