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Enhanced thermal and mechanical properties of polyimide composites by mixing thermotropic liquid crystalline epoxy grafted aluminum nitride

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Abstract

In this paper, we have fabricated thermotropic liquid crystalline with epoxy groups grafted AlN nanoparticles (LCE-g-AlN) and then incorporated these into polyimide (PI) matrix to obtain the composites. The structure of LCE-g-AlN was charactered by Fourier-transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), thermogravimetric analyses (TGA), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The morphology and thermal properties of composites were systematically investigated. The morphology of the PI/LCE-g-AlN composites performed by scanning electron microscopy (SEM) indicating a homogeneous distribution of LCE-g-AlN nanoparticles in the PI matrix. Moreover, the value of Young’s modulus and tensile strength of the PI composites was increased by 78.3 % and 22.7 % in comparison with neat PI, respectively. The value of storage modulus of the PI composites achieved 7897 MPa with the incorporation of 10 wt.%, which increase 159.6 % compared with the neat PI (3035 MPa).

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Acknowledgments

The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (51303034 and 51163004), Guangxi Universities Scientific Research Project (No. YB2014165), the Natural Science Foundation of Guangxi Province, China (No.2013GXNSFAA019308), Natural Science Foundation of Ningbo (No.Y40307dB), the Innovation Team of Guangxi Universities’ Talent Highland and the Guangxi Funds for Specially-appointed Expert.

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Authors and Affiliations

  1. Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China

    Zihai He, Jinhong Yu, Lulu Pan, Xiane Xiao & Shaorong Lu

  2. Key Laboratory of Marine New Materials and Related Technology, Zhejiang Key Laboratory of Marine Materials and Protection Technology, Ningbo Institute of Material Technology & Engineering, Chinese Academy of Sciences, Ningbo, 315201, China

    Wen Dai, Jinhong Yu & Nan Jiang

Authors
  1. Zihai He
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  2. Wen Dai
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  3. Jinhong Yu
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  4. Lulu Pan
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  5. Xiane Xiao
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  6. Shaorong Lu
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  7. Nan Jiang
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Corresponding authors

Correspondence to Jinhong Yu, Shaorong Lu or Nan Jiang.

Additional information

Zihai He and Wen Dai, Contributed equally to this study.

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He, Z., Dai, W., Yu, J. et al. Enhanced thermal and mechanical properties of polyimide composites by mixing thermotropic liquid crystalline epoxy grafted aluminum nitride. J Polym Res 21, 595 (2014). https://doi.org/10.1007/s10965-014-0595-0

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  • DOI: https://doi.org/10.1007/s10965-014-0595-0

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