LI Yan, CUI Hong, ZHENG Rui, JI A-lin, ZHOU Shao-jian. Fabrication and performance of a C/C composite using a needled non-woven carbon fiber felt as a preform. New Carbon Mater., 2017, 32(1): 56-62.
Citation: LI Yan, CUI Hong, ZHENG Rui, JI A-lin, ZHOU Shao-jian. Fabrication and performance of a C/C composite using a needled non-woven carbon fiber felt as a preform. New Carbon Mater., 2017, 32(1): 56-62.

Fabrication and performance of a C/C composite using a needled non-woven carbon fiber felt as a preform

Funds:  National Defense Foundational Research of China(C0320110006).
  • Received Date: 2016-11-01
  • Accepted Date: 2017-02-25
  • Rev Recd Date: 2017-01-05
  • Publish Date: 2017-02-28
  • A C/C composite was prepared by chemical vapor infiltration followed by repeated pitch impregnation and high pressure carbonization to a final density of 1.9 g/cm3 using a needled non-woven carbon fiber felt preform. Its mechanical properties were compared with a 3D woven C/C composite. Results indicated that the axial tensile strength of the needled C/C composite was 24.5 and 52.88 MPa at room temperature and 2 800℃, respectively, correspondingly 138 and 170% higher than that of the 3D woven C/C composite. The failure mode of the needled composite was pseudoplastic. The axial thermal expansion coefficient of the needled composite at 1 000℃ was only 1.409×10-6/℃, 64% lower than that of the 3D woven composite. The needled C/C composite exhibits excellent mechanical strength and thermal physical properties which make it potentially useful for a solid rocket motor.
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