Temperature-variable Raman scattering study on micromechanical properties of the carbon fiber reinforced polyimide composite film

RAN Min; JIA Li-shuang; CHENG Chao-ge; WU Qi-lin

doi:10.1016/S1872-5805(19)60004-1

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RAN Min, JIA Li-shuang, CHENG Chao-ge, WU Qi-lin. Temperature-variable Raman scattering study on micromechanical properties of the carbon fiber reinforced polyimide composite film. New Carbon Mater., 2019, 34(1): 105-109. doi: 10.1016/S1872-5805(19)60004-1

Citation:

RAN Min, JIA Li-shuang, CHENG Chao-ge, WU Qi-lin. Temperature-variable Raman scattering study on micromechanical properties of the carbon fiber reinforced polyimide composite film. New Carbon Mater., 2019, 34(1): 105-109. doi: 10.1016/S1872-5805(19)60004-1

Citation:

RAN Min, JIA Li-shuang, CHENG Chao-ge, WU Qi-lin. Temperature-variable Raman scattering study on micromechanical properties of the carbon fiber reinforced polyimide composite film. New Carbon Mater., 2019, 34(1): 105-109. doi: 10.1016/S1872-5805(19)60004-1

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Temperature-variable Raman scattering study on micromechanical properties of the carbon fiber reinforced polyimide composite film

doi: 10.1016/S1872-5805(19)60004-1

RAN Min^1,2,
JIA Li-shuang^1,2,
CHENG Chao-ge^1,2,
WU Qi-lin^{1,2
,}

1.
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China;
2.
College of Materials Science and Engineering, Donghua University, Shanghai 201620, China

Funds: National Key R&D Program of China (2016YFB0303201); Research and Innovation Project of Shanghai Municipal Education Commission (14ZZ069).

Received Date: 2018-12-30
Accepted Date: 2019-02-20
Rev Recd Date: 2019-01-26
Publish Date: 2019-02-28

Abstract

Abstract

Temperature-variable Raman spectroscopy equipped with mapping function was used to investigate the micro-mechanical properties of a carbon fiber (CF) reinforced polyimide(PI)composite film using carbon nanotubes (3 wt%) dispersed in PI as the stress sensor. The stress distributions on CFs and the interface region during heating from 25 to 300℃ were mapped based on the stress sensitive Raman G' band (around 2679 cm^-1) shifts of CNTs. Results indicate that thermal motion of PI chain affect the mechanical properties when the CF/CNT-PI film was heated up to 300℃. Both CFs and interface region were compressively stressed below 200℃. The compressive stress decreased with temperature and was approximately eliminated at around 200℃. Tensile stress developed above 200℃ and increased with temperature, which was distributed mainly on CFs. Furthermore, the stress transfer between CFs and matrix was less than 100% due to the thermal stress hysteresis in the PI matrix.
- Carbon fiber,
- Interfacial micro-mechanics,
- Variable temperature Raman,
- Stress

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References(12)

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