Preparation and characterization of CNT films/silicone rubber composite with improved microwave absorption performance

Junyao Shen; Yongtao Yao; Yanju Liu; Jinsong Leng

doi:10.1088/2053-1591/ab168e

Preparation and characterization of CNT films/silicone rubber composite with improved microwave absorption performance

School of Astronautics

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Fabrications of CNT films/SR and CNT powders/SR composites are introduced to provide the rational comparisons of their thermal, mechanical and electrical properties in this work. The growth of CNT films is firstly prepared with floating catalyst chemical vapor deposition (FCCVD) method. CNT films belong to multi-walled CNT and mesoporous characteristic by Raman and nitrogen adsorption-desorption measurements, respectively. CNT films/SR composite also presents better microwave absorption performances with the low-level CNT loadings (0.5 wt%), compared to the CNT powders/SR composites. It exhibits the minimum reflection loss (RL_min) of the CNT films/SR composite is -26.55 dB and related effective absorption bandwidth (RL < -10 dB) of 3.57 GHz (12.24-15.81 GHz) with 1 mm thickness. A proposed absorption mechanism is attributed to optimized impedance matching and enhanced conductive/dielectric losses in the CNT films/SR absorber.

Original language	English
Article number	075610
Journal	Materials Research Express
Volume	6
Issue number	7
DOIs	https://doi.org/10.1088/2053-1591/ab168e
State	Published - 17 Apr 2019

Keywords

CNT/SR composite
CNTfilms
mechanical property
microwave absorbing
thermal property

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10.1088/2053-1591/ab168e

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title = "Preparation and characterization of CNT films/silicone rubber composite with improved microwave absorption performance",

abstract = "Fabrications of CNT films/SR and CNT powders/SR composites are introduced to provide the rational comparisons of their thermal, mechanical and electrical properties in this work. The growth of CNT films is firstly prepared with floating catalyst chemical vapor deposition (FCCVD) method. CNT films belong to multi-walled CNT and mesoporous characteristic by Raman and nitrogen adsorption-desorption measurements, respectively. CNT films/SR composite also presents better microwave absorption performances with the low-level CNT loadings (0.5 wt\%), compared to the CNT powders/SR composites. It exhibits the minimum reflection loss (RLmin) of the CNT films/SR composite is -26.55 dB and related effective absorption bandwidth (RL < -10 dB) of 3.57 GHz (12.24-15.81 GHz) with 1 mm thickness. A proposed absorption mechanism is attributed to optimized impedance matching and enhanced conductive/dielectric losses in the CNT films/SR absorber.",

keywords = "CNT/SR composite, CNTfilms, mechanical property, microwave absorbing, thermal property",

author = "Junyao Shen and Yongtao Yao and Yanju Liu and Jinsong Leng",

note = "Publisher Copyright: {\textcopyright} 2019 IOP Publishing Ltd.",

year = "2019",

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doi = "10.1088/2053-1591/ab168e",

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journal = "Materials Research Express",

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TY - JOUR

T1 - Preparation and characterization of CNT films/silicone rubber composite with improved microwave absorption performance

AU - Shen, Junyao

AU - Yao, Yongtao

AU - Liu, Yanju

AU - Leng, Jinsong

PY - 2019/4/17

Y1 - 2019/4/17

N2 - Fabrications of CNT films/SR and CNT powders/SR composites are introduced to provide the rational comparisons of their thermal, mechanical and electrical properties in this work. The growth of CNT films is firstly prepared with floating catalyst chemical vapor deposition (FCCVD) method. CNT films belong to multi-walled CNT and mesoporous characteristic by Raman and nitrogen adsorption-desorption measurements, respectively. CNT films/SR composite also presents better microwave absorption performances with the low-level CNT loadings (0.5 wt%), compared to the CNT powders/SR composites. It exhibits the minimum reflection loss (RLmin) of the CNT films/SR composite is -26.55 dB and related effective absorption bandwidth (RL < -10 dB) of 3.57 GHz (12.24-15.81 GHz) with 1 mm thickness. A proposed absorption mechanism is attributed to optimized impedance matching and enhanced conductive/dielectric losses in the CNT films/SR absorber.

AB - Fabrications of CNT films/SR and CNT powders/SR composites are introduced to provide the rational comparisons of their thermal, mechanical and electrical properties in this work. The growth of CNT films is firstly prepared with floating catalyst chemical vapor deposition (FCCVD) method. CNT films belong to multi-walled CNT and mesoporous characteristic by Raman and nitrogen adsorption-desorption measurements, respectively. CNT films/SR composite also presents better microwave absorption performances with the low-level CNT loadings (0.5 wt%), compared to the CNT powders/SR composites. It exhibits the minimum reflection loss (RLmin) of the CNT films/SR composite is -26.55 dB and related effective absorption bandwidth (RL < -10 dB) of 3.57 GHz (12.24-15.81 GHz) with 1 mm thickness. A proposed absorption mechanism is attributed to optimized impedance matching and enhanced conductive/dielectric losses in the CNT films/SR absorber.

KW - CNT/SR composite

KW - CNTfilms

KW - mechanical property

KW - microwave absorbing

KW - thermal property

UR - https://www.scopus.com/pages/publications/85065846338

U2 - 10.1088/2053-1591/ab168e

DO - 10.1088/2053-1591/ab168e

M3 - 文章

AN - SCOPUS:85065846338

SN - 2053-1591

VL - 6

JO - Materials Research Express

JF - Materials Research Express

IS - 7

M1 - 075610

ER -

Preparation and characterization of CNT films/silicone rubber composite with improved microwave absorption performance

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Keywords

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