Thermal conductivities of a needle-punched carbon/carbon composite with unbalanced structures

Lee Jungmin; Lee Hyung Ik; Paik Jong Gyu

doi:10.1007/s42823-020-00174-6

Thermal conductivities of a needle-punched carbon/carbon composite with unbalanced structures

Carbon Letters
Abbr : Carbon Lett.
2021, 31(3), pp.463-471
DOI : 10.1007/s42823-020-00174-6
Publisher : Korean Carbon Society
Research Area : Natural Science > Natural Science General > Other Natural Sciences General
Received : April 26, 2020
Accepted : July 30, 2020
Published : June 1, 2021

Lee Jungmin ¹, Lee Hyung Ik ², Paik Jong Gyu ²

¹국방화학연구소
²국방과학연구소

Accredited

ABSTRACT

The XYZ 3-dimensional thermal conductivities of the C/C up to 2000 °C were measured by a laser fash method. Carbon fberreinforced carbon composites (C/C) were generally developed for aerospace missions due to their excellent thermal resistivity at ultrahigh temperature. C/C must endure harsh environments such as thousands of degrees Celsius without degradation of its mechanical properties. To solve this problem, among the passive thermal protection system, we suggest a method of conducting more heat through the mono-axial direction, which resulted in ease of the thermal rise in the heat receiving part. For example, the X-43A fight applied unbalanced C/C (UCC) with diferent carbon fber orientation ratios according to the XY direction in the leading edge part. To investigate the diference in thermal conductivity between unbalanced C/C (UCC) and balanced C/C (BCC), unbalanced and balanced preforms were prepared by a needle punching process, and then they were densifed by pitch infltration and a carbonization process. We compared and analyzed the efects of unbalanced C/C(UCC) and balanced C/C (BCC) structures on the thermal conductivity. We also designed the “rule of mixtures” equation for calculating thermal conductivities of each C/C using reported data of carbon fber and graphite matrix. Our calculations of thermal conductivity ratio match the ratio of real data.

KEYWORDS

Carbon–carbon composite (C/C) Unbalanced structure Needle-punched preform Thermal conductivity Rule of mixtures equation

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Total Citation Counts(KCI+WOS) (6) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (6) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

* References for papers published after 2023 are currently being built.

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Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04

Thermal conductivities of a needle-punched carbon/carbon composite with unbalanced structures

ABSTRACT

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Citation status

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-27)

Total Citation Counts(KCI+WOS) (6) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (6) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

* References for papers published after 2023 are currently being built.

Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04

Thermal conductivities of a needle-punched carbon/carbon composite with unbalanced structures

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KCI Citation Counts (1)

WoS Citation Counts (5) This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-27)

Total Citation Counts(KCI+WOS) (6) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (6) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

REFERENCES (34) * References for papers published after 2023 are currently being built.

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Citation

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-27)

* References for papers published after 2023 are currently being built.