探索4D打印形状记忆聚合物具有动态共价键的适应性.
Jing Zhang1,2, Mingkun Xu1,2, Nan Zhang1
1State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
Small (Weinheim an der Bergstrasse, Germany)
|September 10, 2024
概括
研究人员开发了一种新的动态形状记忆聚合物 (DSMP),用于使用数字光处理进行4D打印. 这种先进的材料可以实现复杂应用的自我愈合,回收和光热形状变形.
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
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 使用数字光处理 (DLP) 的4D打印 (4DP) 为复杂形状提供了高精度.
- 为DLP开发高性能动态形状记忆聚合物 (DSMP) 是一个挑战,因为材料不兼容.
研究的目的:
- 为了创建一个机械强大的DSMP兼容DLP打印.
- 在4D打印结构中实现自愈,回收和光热控制等高级功能.
主要方法:
- 在聚合物结构中加入连接聚胺刚性段的动态共价胺键.
- 使用数字光处理 (DLP) 来进行4D打印,开发了DSMP.
主要成果:
- 该DSMP表现出优异的机械性能 (拉力强度~41.7 MPa,模量~1.63 GPa) 和热稳定性 (Tg~113°C).
- 4D打印结构展示了固态可塑性,使其能够重新配置,自我修复和回收利用.
- 该材料具有内在的光热效应,用于双模式触发的形状变形.
结论:
- 这项工作扩大了高性能4D打印配置的应用.
- 开发的DSMP提供了对材料使用的可持续方法,并解决了环境问题.
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