Preparation and characterization of in situ polymerized cyclic butylene terephthalate and its composites

Lu Zhang, Li Min Zhou, Ji Feng Zhang, Bin Yang, Shao Hua Fan

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


A fatal disadvantage of continuously reinforced thermoplastic composites is the high melt viscosity of the matrix which hampers impregnation. However, the melt viscosity of low molecular weight CBT resin can reach extremely low value, which simplifies impregnation and enables the use of thermoset production methods. The thermal analysis, rheological analysis and mechanical property on the polymerization and crystallization of CBT into poly (cyclic butylene terephthalate) (PCBT) at different ratios of catalyst were investigated in this paper. The continuous glass fiber (GF) reinforced PCBT composite with over 70% fiber volume content was prepared via in situ polymerization, and the mechanical property of the PCBT was studied. The best impregnation time was decreased and the degree of crystallinity was increased respectively with catalyst fraction increasing. The tensile/flexural strength and modulus of PCBT resin and GF/PCBT composites were enhanced when the catalyst fraction increased from 0.3% to 0.6%.
Original languageEnglish
Title of host publicationAdvanced Composites for Marine Engineering
PublisherTrans Tech Publications Ltd
Number of pages7
ISBN (Print)9783038354062
Publication statusPublished - 1 Jan 2015
Event1st International Conference on Advanced Composites for Marine Engineering, ICACME 2013 - Beijing, China
Duration: 10 Sep 201312 Sep 2013

Publication series

NameMaterials Science Forum
ISSN (Print)0255-5476


Conference1st International Conference on Advanced Composites for Marine Engineering, ICACME 2013


  • Crystallization
  • Cyclic butylene terephthalate
  • Mechanical properties
  • Poly(cyclic butylene terephthalate)
  • Rheology

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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