Cargando…

Carbon Foam-Reinforced Polyimide-Based Carbon Aerogel Composites Prepared via Co-Carbonization as Insulation Material

The weak inherent non-covalent interactions between carbon aerogel backbone nanoparticles obtained by the pyrolysis of conventional organic aerogel can lead to poor mechanical properties. When applied in the thermal protection system of a high-speed spacecraft, the preparation of carbon aerogel insu...

Descripción completa

Detalles Bibliográficos
Autores principales: Zheng, Zixuan, Liang, Guojie, Li, Li, Liu, Jing, Wang, Xinbo, Sun, Yi, Li, Kai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9141059/
https://www.ncbi.nlm.nih.gov/pubmed/35621606
http://dx.doi.org/10.3390/gels8050308
_version_ 1784715252501315584
author Zheng, Zixuan
Liang, Guojie
Li, Li
Liu, Jing
Wang, Xinbo
Sun, Yi
Li, Kai
author_facet Zheng, Zixuan
Liang, Guojie
Li, Li
Liu, Jing
Wang, Xinbo
Sun, Yi
Li, Kai
author_sort Zheng, Zixuan
collection PubMed
description The weak inherent non-covalent interactions between carbon aerogel backbone nanoparticles obtained by the pyrolysis of conventional organic aerogel can lead to poor mechanical properties. When applied in the thermal protection system of a high-speed spacecraft, the preparation of carbon aerogel insulation materials with excellent formability and high mechanical strength still remains a huge challenge. This work reports an efficient approach for fabricating carbon foam-reinforced carbon aerogel composites by compounding the nanoporous polyimide aerogel into the microporous pre-carbonized phenolic resin-based carbon foam via vacuum impregnation, gelatinizing and co-carbonization. Benefiting from the co-shrinkage caused by co−carbonization, the thermal insulation capacity of the carbon aerogel and the formability of the pre−carbonized foam are efficiently utilized. The shrinkage, density and carbon yield of aerogels, pre-carbonized foams and the composites at different temperatures were measured to analyze the formation of the interfacial gap within the composite. The co-carbonization mechanism of the polyimide aerogels and phenolic resin-based pre-carbonized foams was analyzed through XPS, TG-MS, and FT-IR. Among the prepared samples, CF30-CPI-1000 °C with small interfacial gaps showed the lowest thermal conductivity, which was as low as 0.56 W/(m·K) at 1900 °C, and the corresponding compressive strength and elastic modulus were as high as 0.532 MPa and 9.091 MPa, respectively.
format Online
Article
Text
id pubmed-9141059
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-91410592022-05-28 Carbon Foam-Reinforced Polyimide-Based Carbon Aerogel Composites Prepared via Co-Carbonization as Insulation Material Zheng, Zixuan Liang, Guojie Li, Li Liu, Jing Wang, Xinbo Sun, Yi Li, Kai Gels Article The weak inherent non-covalent interactions between carbon aerogel backbone nanoparticles obtained by the pyrolysis of conventional organic aerogel can lead to poor mechanical properties. When applied in the thermal protection system of a high-speed spacecraft, the preparation of carbon aerogel insulation materials with excellent formability and high mechanical strength still remains a huge challenge. This work reports an efficient approach for fabricating carbon foam-reinforced carbon aerogel composites by compounding the nanoporous polyimide aerogel into the microporous pre-carbonized phenolic resin-based carbon foam via vacuum impregnation, gelatinizing and co-carbonization. Benefiting from the co-shrinkage caused by co−carbonization, the thermal insulation capacity of the carbon aerogel and the formability of the pre−carbonized foam are efficiently utilized. The shrinkage, density and carbon yield of aerogels, pre-carbonized foams and the composites at different temperatures were measured to analyze the formation of the interfacial gap within the composite. The co-carbonization mechanism of the polyimide aerogels and phenolic resin-based pre-carbonized foams was analyzed through XPS, TG-MS, and FT-IR. Among the prepared samples, CF30-CPI-1000 °C with small interfacial gaps showed the lowest thermal conductivity, which was as low as 0.56 W/(m·K) at 1900 °C, and the corresponding compressive strength and elastic modulus were as high as 0.532 MPa and 9.091 MPa, respectively. MDPI 2022-05-16 /pmc/articles/PMC9141059/ /pubmed/35621606 http://dx.doi.org/10.3390/gels8050308 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zheng, Zixuan
Liang, Guojie
Li, Li
Liu, Jing
Wang, Xinbo
Sun, Yi
Li, Kai
Carbon Foam-Reinforced Polyimide-Based Carbon Aerogel Composites Prepared via Co-Carbonization as Insulation Material
title Carbon Foam-Reinforced Polyimide-Based Carbon Aerogel Composites Prepared via Co-Carbonization as Insulation Material
title_full Carbon Foam-Reinforced Polyimide-Based Carbon Aerogel Composites Prepared via Co-Carbonization as Insulation Material
title_fullStr Carbon Foam-Reinforced Polyimide-Based Carbon Aerogel Composites Prepared via Co-Carbonization as Insulation Material
title_full_unstemmed Carbon Foam-Reinforced Polyimide-Based Carbon Aerogel Composites Prepared via Co-Carbonization as Insulation Material
title_short Carbon Foam-Reinforced Polyimide-Based Carbon Aerogel Composites Prepared via Co-Carbonization as Insulation Material
title_sort carbon foam-reinforced polyimide-based carbon aerogel composites prepared via co-carbonization as insulation material
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9141059/
https://www.ncbi.nlm.nih.gov/pubmed/35621606
http://dx.doi.org/10.3390/gels8050308
work_keys_str_mv AT zhengzixuan carbonfoamreinforcedpolyimidebasedcarbonaerogelcompositespreparedviacocarbonizationasinsulationmaterial
AT liangguojie carbonfoamreinforcedpolyimidebasedcarbonaerogelcompositespreparedviacocarbonizationasinsulationmaterial
AT lili carbonfoamreinforcedpolyimidebasedcarbonaerogelcompositespreparedviacocarbonizationasinsulationmaterial
AT liujing carbonfoamreinforcedpolyimidebasedcarbonaerogelcompositespreparedviacocarbonizationasinsulationmaterial
AT wangxinbo carbonfoamreinforcedpolyimidebasedcarbonaerogelcompositespreparedviacocarbonizationasinsulationmaterial
AT sunyi carbonfoamreinforcedpolyimidebasedcarbonaerogelcompositespreparedviacocarbonizationasinsulationmaterial
AT likai carbonfoamreinforcedpolyimidebasedcarbonaerogelcompositespreparedviacocarbonizationasinsulationmaterial