Mechano‐Plastic Pyrolysis of Dynamic Covalent Polymer Network toward Hierarchical 3D Ceramics,Advanced Materials

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Mechano‐Plastic Pyrolysis of Dynamic Covalent Polymer Network toward Hierarchical 3D Ceramics
Advanced Materials ( IF 27.4 ) Pub Date : 2019-01-18 , DOI: 10.1002/adma.201807326
Ning Zheng ₁ , Jingjing Hou ₁ , Hangbo Zhao ₂ , Jingjun Wu ₁ , Yingwu Luo ₁ , Hao Bai ₁ , John A. Rogers _{2,

3} , Qian Zhao ₁ , Tao Xie ₁

Affiliation

Shaping ceramics into complex 3D geometries is desirable yet challenging, particularly those with structural hierarchy spanning different length scales. A mechano‐plastic pyrolysis process that overcomes this limitation is reported. In addition to taking advantage of the moldability of organic polymers, the process uniquely incorporates mechano‐plasticity via dynamic covalent bond exchange for reconfiguring the shape of a preceramic polymer. The combined steps result in simultaneous shape control at both micro‐ and macro‐scales. Further pyrolysis leads to complex ceramic structures that are otherwise difficult to produce. To enable this process, rational design of the polymer network is required to satisfy an unusual combination of mechano‐plasticity and pyrolysis. Overall, the process offers an avenue for efficient fabrication of hierarchical 3D ceramic structures suitable for engineering applications.

中文翻译：

动态共价聚合物网络对分层3D陶瓷的机械-塑性热解

将陶瓷成形为复杂的3D几何形状是理想的，但是具有挑战性，特别是结构层次跨越不同长度比例的陶瓷。据报道，克服了该限制的机械塑性热解过程。除了利用有机聚合物的可模制性之外，该工艺还通过动态共价键交换独特地结合了机械塑性，从而重新构造了陶瓷前体聚合物的形状。组合的步骤可以同时在微观和宏观尺度上进行形状控制。进一步的热解导致复杂的陶瓷结构，否则难以制造。为了实现这一过程，需要合理设计聚合物网络，以满足机械塑性和热解的不寻常结合。全面的，

更新日期：2019-01-18

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