Effect of carbon nanotubes on mechanical and thermal stability of nitrile rubber O-ring

XU Zehua; ZHANG Yanbin; HE Qiang

doi:10.13801/j.cnki.fhclxb.20230112.005

Volume 40 Issue 9

Sep. 2023

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XU Zehua, ZHANG Yanbin, HE Qiang. Effect of carbon nanotubes on mechanical and thermal stability of nitrile rubber O-ring[J]. Acta Materiae Compositae Sinica, 2023, 40(9): 5181-5188. doi: 10.13801/j.cnki.fhclxb.20230112.005

Citation:

XU Zehua, ZHANG Yanbin, HE Qiang. Effect of carbon nanotubes on mechanical and thermal stability of nitrile rubber O-ring[J]. Acta Materiae Compositae Sinica, 2023, 40(9): 5181-5188. doi: 10.13801/j.cnki.fhclxb.20230112.005

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Effect of carbon nanotubes on mechanical and thermal stability of nitrile rubber O-ring

doi: 10.13801/j.cnki.fhclxb.20230112.005

XU Zehua^{1, 2
,},
ZHANG Yanbin²,
HE Qiang^{1
,
,}

1.
College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan 618307, China
2.
School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471003, China

Funds: Sichuan Science and Technology Plan Project (23 NSFSC1923)

Received Date: 2022-10-18
Accepted Date: 2022-12-31
Rev Recd Date: 2022-12-19

Available Online: 2023-01-13

Publish Date: 2023-09-15

Abstract

Abstract

In order to study the reinforcing mechanism of carbon nanotubes (CNT) on the mechanical and thermal stability of nitrile rubber (NBR) O-ring, 1%CNT/NBR (mass ratio of CNT) and 2%CNT/NBR composite O-ring were prepared by mechanical blending and hot pressing. The mechanical properties of CNT/NBR composite O-ring were tested on the basis of SEM, EDS and FTIR. The results show that with the increase of CNT content, the elastic modulus and rigidity of CNT/NBR composite O-ring increase. The tensile strength of 1%CNT/NBR O-ring reaches 12.6 MPa due to the formation of C—O bond. The increase of CNT content in NBR matrix can improve the thermal stability of CNT/NBR composite O-ring, and the phase transition temperature of 2%CNT/NBR reaches 297℃. The excellent aging resistance of 1%CNT/NBR composites is attributed to the fact that CNT makes NBR matrix produce C≡N triple bond functional groups. High-performance CNT/NBR composite O-ring has certain application value in the field of aviation seals.
- carbon nanotubes (CNT),
- nitrile butadiene rubber (NBR),
- O-shaped sealing ring,
- mechanical properties,
- thermal stability,
- ageing resistance
Long Abstrsct
Innovation Points

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References(28)

References

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