Research Papers

Thermal Analysis of Directional Freezing Based Graphene Aerogel Three-Dimensional Printing Process

[+] Author and Article Information
Guanglei Zhao

Department of Industrial and
Systems Engineering,
University at Buffalo,
State University of New York,
Buffalo, NY 14260
e-mail: guanglei@buffalo.edu

Dong Lin

Department of Industrial and
Manufacturing Systems Engineering,
Kansas State University,
Manhattan, KS 66506
e-mail: dongl@ksu.edu

Chi Zhou

Department of Industrial and
Systems Engineering,
University at Buffalo,
State University of New York,
Buffalo, NY 14260
e-mail: chizhou@buffalo.edu

1Corresponding author.

Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MICRO- AND NANO-MANUFACTURING. Manuscript received September 27, 2016; final manuscript received November 26, 2016; published online January 10, 2017. Editor: Jian Cao.

J. Micro Nano-Manuf 5(1), 011006 (Jan 10, 2017) (8 pages) Paper No: JMNM-16-1056; doi: 10.1115/1.4035392 History: Received September 27, 2016; Revised November 26, 2016

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.

Copyright © 2017 by ASME
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Fig. 1

(a) and (b) Three-dimensional printing graphene aerogel, 3D‐printed (c) truss structure and (d) 2.5D structure on caltkin, and (e) graphene aerogel with various wall thicknesses [29]

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Fig. 2

A failed test case caused by inadequate waiting time

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Fig. 3

Three types of heat transfer conditions

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Fig. 4

Framework of the thermal analysis algorithm

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Fig. 5

A 4 × 4 square model

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Fig. 6

A 4 × 4 temperature evolution for square model without waiting time between layers

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Fig. 7

Waiting until temperature of the deposited layers drops down to −19 °C

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Fig. 8

Waiting time for the 40 × 4 model

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Fig. 9

A 20 × 20 square and 20 × 20 triangle models

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Fig. 10

Layer waiting time for models in Fig. 9

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Fig. 11

Two similar geometries with different number of base layers

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Fig. 12

Layer waiting time for models in Fig. 11

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Fig. 13

Printing process of 3D cubic model

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Fig. 14

Waiting time for 3D cubic model

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Fig. 15

Printed part with designed waiting time between layer fabrications




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