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Peer-reviewedCC BY 4.0Polymers

Effects of Multi-Stage Compression Molding Parameters on Mechanical Properties and Damage Behavior of Cross-Ply Continuous Carbon Fiber-Reinforced Polycarbonate Laminates

  • Zhanhui Wang1,2
  • Haonan Liu2
  • Furen Xiao1
  • Haichao Hu2
  • Yan Bi2
  1. 1School of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China
  2. 2School of Mechanical Engineering, Tianjin Sino-German University of Applied Sciences, Tianjin 300350, China
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Abstract

Processing conditions govern the mechanical response of continuous carbon fiber-reinforced polycarbonate (CCF/PC) laminates. This study examined variations in mechanical properties and associated damage in cross-ply laminates using an L9 orthogonal design varying pre-molding temperature, consolidation pressure, and consolidation time. Tensile, flexural, and short-beam tests were combined with descriptive factor-level mean and range analyses, scanning electron microscopy, and post-test computed tomography. The largest observed factor-level range corresponded to temperature for tensile strength, pressure for tensile modulus, and time for flexural properties and apparent interlaminar shear strength (ILSS). All five properties reached their highest time-level mean at 10 min. Among the tested combinations, 210 °C–1.0 MPa–15 min gave the highest mean tensile strength and apparent ILSS (752 and 21.4 MPa), whereas 210 °C–2.0 MPa–10 min gave the highest tensile modulus, flexural strength, and flexural modulus (61.5 GPa, 720 MPa, and 67.5 GPa). Representative tensile fracture surfaces associated higher specimen strength with matrix attachment and tearing, and lower specimen strength with interfacial separation. Flexural specimens exhibited compression-side damage and delamination. These findings distinguish property-specific processing responses and show that interpreting flexural performance requires consideration of both compression-side and interlaminar damage.

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Cite

BibTeXRIS
BibTeX
@article{wang2026effects,
  title = {{Effects of Multi-Stage Compression Molding Parameters on Mechanical Properties and Damage Behavior of Cross-Ply Continuous Carbon Fiber-Reinforced Polycarbonate Laminates}},
  author = {Zhanhui Wang and Haonan Liu and Furen Xiao and Haichao Hu and Yan Bi},
  journal = {Polymers},
  year = {2026},
  month = nov,
  doi = {10.3390/polym18212769},
  url = {https://www.mdpi.com/2073-4360/18/21/2769},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Effects of Multi-Stage Compression Molding Parameters on Mechanical Properties and Damage Behavior of Cross-Ply Continuous Carbon Fiber-Reinforced Polycarbonate Laminates
AU  - Zhanhui Wang
AU  - Haonan Liu
AU  - Furen Xiao
AU  - Haichao Hu
AU  - Yan Bi
PY  - 2026
DA  - 2026/11/06
JO  - Polymers
DO  - 10.3390/polym18212769
UR  - https://www.mdpi.com/2073-4360/18/21/2769
AB  - Processing conditions govern the mechanical response of continuous carbon fiber-reinforced polycarbonate (CCF/PC) laminates. This study examined variations in mechanical properties and associated damage in cross-ply laminates using an L9 orthogonal design varying pre-molding temperature, consolidation pressure, and consolidation time. Tensile, flexural, and short-beam tests were combined with descriptive factor-level mean and range analyses, scanning electron microscopy, and post-test computed tomography. The largest observed factor-level range corresponded to temperature for tensile strength, pressure for tensile modulus, and time for flexural properties and apparent interlaminar shear strength (ILSS). All five properties reached their highest time-level mean at 10 min. Among the tested combinations, 210 °C–1.0 MPa–15 min gave the highest mean tensile strength and apparent ILSS (752 and 21.4 MPa), whereas 210 °C–2.0 MPa–10 min gave the highest tensile modulus, flexural strength, and flexural modulus (61.5 GPa, 720 MPa, and 67.5 GPa). Representative tensile fracture surfaces associated higher specimen strength with matrix attachment and tearing, and lower specimen strength with interfacial separation. Flexural specimens exhibited compression-side damage and delamination. These findings distinguish property-specific processing responses and show that interpreting flexural performance requires consideration of both compression-side and interlaminar damage.
SN  - 2073-4360
ER  -