Investigation of resin flowing and infiltration behavior during z direction flowing RTM process

Weidong Li, Gang Liu, Xuefeng An, Xiaosu Yi

Research output: Journal PublicationArticlepeer-review

6 Citations (Scopus)


The flowing and infiltration behaviors of the equivalent fluid (resin), which passed through the thickness direction (z direction) of large thickness un-toughened and "ex-situ" toughened preforms were studied. The pressure variation of inlet and outlet pot were monitored respectively by pressure transducers during z direction flowing RTM (z-RTM) process. Based on the pressure curves, the macro-flowing and micro-infiltrition behaviors of the "resin" inside the "ex-situ" toughened preforms and untoughened preforms were deduced. The results show that the resin flow along the z direction between the gap of fiber bundles and at the same time infiltrated the intra fiber bundles during the injection stage of z-RTM process. The "ex-situ" toughener will delay the resin macro-flowing, however the resin flow front will be smoothed by the interlaminar toughener. Compared with the un-toughened preform, the introducing of interlaminar toughening agent reduces the z-direction permeability of the preform from 2.9×10-14m2 to 3.5×10-15m2.

Original languageEnglish
Pages (from-to)82-89
Number of pages8
JournalFuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
Issue number6
Publication statusPublished - Dec 2013
Externally publishedYes


  • "ex-situ" toughen
  • Permeability
  • Preform
  • RTM
  • Z-direction flowing

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry (all)
  • Condensed Matter Physics
  • Mechanics of Materials


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