Journal of Aeronautical Materials (Jan 2017)

Comparison of Composites Properties Manufactured by Vacuum Process and Autoclave Process

  • MA Rufei,
  • GUI Jiajun,
  • GUO Jiajun,
  • SHI Fenghui,
  • ZHANG Baoyan

DOI
https://doi.org/10.11868/j.issn.1005-5053.2015.000206
Journal volume & issue
Vol. 37, no. 1
pp. 99 – 103

Abstract

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Two kinds of prepregs ZT7G/LT-03A(unidirectional carbon fiber prepreg) and ZT7G3198P/LT-03A(plain carbon fabric prepreg) were used to manufacture three Bateches of composites by vacuum process and autoclave process respectively. The physical properties of the prepregs and mechanical properties of composite were tested. The performance, fiber volume content and porosity of composites manufactured by vacuum cure and autoclave process show that the physical property retention rates of vacuum cured composites are all over 75%, some even more than 100%. Interlaminar shear strength keeps the lowest retention rate and warp tensile strength keeps the highest retention in unidirectional carbon fiber composites. For fabric composite material, compression strength keeps the lowest and warp tensile strength keeps the highest retention. Vacuum cured composites perform lower fiber volume content and higher porosity, which are the main reasons of the lower performance.

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