Thermal Analysis of Directional Freezing Based Graphene Aerogel Three-Dimensional Printing Process
Thermal Analysis of Directional Freezing Based Graphene Aerogel Three-Dimensional Printing Process
复制标题
基于定向冷冻的石墨烯气凝胶三维打印过程的热分析
DOI：
10.1115/1.4035392
复制
发表时间：
2017
影响因子：
1
通讯作者：
Chi Zhou
中科院分区：
文献类型：
--
作者：
Guanglei Zhao;D. Lin;Chi Zhou
采用一种新型的定向冷冻三维打印技术制备了石墨烯气凝胶。石墨烯墨水的热性能是影响材料形态和加工效率/可靠性的关键因素之一。我们建立了一个热传递模型来预测印刷材料的温度演变，并在此基础上估计出层间等待时间。该技术不仅可以提高加工效率和可靠性，而且可以作为一种灵活的工具来预测和控制印刷石墨烯气凝胶的微观结构。仿真和实验结果验证了该方法的有效性和有效性。
A novel directional freezing based three-dimensional (3D) printing technique is applied to fabricate graphene aerogel (GA). Thermal property of the graphene ink is one of the key impacts on the material morphology and process efficiency/reliability. We develop a heat transfer model to predict temperature evolution of the printed materials and then estimate layer waiting time based on it. The proposed technique can not only improve the process efficiency and reliability but also serve as a flexible tool to predict and control the microstructure of the printed graphene aerogels. Both the simulation and experiment results demonstrate the efficiency and effectiveness of the proposed approach.