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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.0c03312
|2 doi
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|a eng
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| 100 |
1 |
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|a Yang, Jianming
|e verfasserin
|4 aut
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| 245 |
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|a Versatile Direct Writing of Aerogel-Based Sol-Gel Inks
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|c 2021
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 16.02.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Direct ink writing (DIW) of aerogels has great potential in designing novel three-dimensional (3D) multifunctional materials with hierarchical structures ranging from the nanoscale to the macroscopic scale. In this paper, pure aerogels composed of inorganics, strongly cross-linking organics, and weakly cross-linking organics were directly written via the precise control of the gelation degree without using any additives. The rheological properties of a resorcinol-formaldehyde aerogel-based sol-gel ink (marked as RA ink) were measured at different reaction times to determine the suitable printable range (G'LVR: several 103 Pa) that ensures its good print fidelity. In addition, the rheological evolution of the RA ink during the sol-gel process and under different shear stresses was studied. The correlation of relevant parameters was established according to the Hagen-Poiseuille model. Other typical aerogel-based sol-gel inks including a silica aerogel-based sol-gel ink (SA ink) and a polyimide aerogel-based sol-gel ink (PA ink) for DIW were also demonstrated. Finally, water evaporation experiments were carried out using a 3D-printed carbonized resorcinol-formaldehyde aerogel (CA) to further exhibit the potential applications of this novel technology in solar steam generation. The evaporation rate (1.57 kg m-2 h-1) and efficiency (88.38%) of 3D-printed CA were higher than those of bulk CA (1.21 kg m-2 h-1 and 69.82%). This paper systematically studies the control of DIW parameters for aerogel-based sol-gel inks and shows a potential application in high-efficiency 3D-printed evaporators
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|a Journal Article
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1 |
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|a Wang, Hongqiang
|e verfasserin
|4 aut
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1 |
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|a Zhou, Bin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shen, Jun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Zhihua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Du, Ai
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g 37(2021), 6 vom: 16. Feb., Seite 2129-2139
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnas
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| 773 |
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|g volume:37
|g year:2021
|g number:6
|g day:16
|g month:02
|g pages:2129-2139
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|u http://dx.doi.org/10.1021/acs.langmuir.0c03312
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