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Fire reaction and post-fire impact properties of flax fibre reinforced composites containing intumescent flame retardants

Journal of reinforced plastics and composites, 2024-01, Vol.43 (1-2), p.111-126 [Peer Reviewed Journal]

The Author(s) 2023 ;ISSN: 0731-6844 ;EISSN: 1530-7964 ;DOI: 10.1177/07316844231158112

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  • Title:
    Fire reaction and post-fire impact properties of flax fibre reinforced composites containing intumescent flame retardants
  • Author: Kim, NK ; Bhattacharyya, D
  • Is Part Of: Journal of reinforced plastics and composites, 2024-01, Vol.43 (1-2), p.111-126
  • Description: The current research aims at investigating the fire reaction and post-fire impact characteristics of flax fibre reinforced composites based on different polymer matrices, such as epoxy resin and polypropylene (PP). The effects of stacking sequences of polymer sheets and flax fabrics within the composites are explored by a cone calorimeter. Heat release and smoke production results indicate that a top surface and number of flame-retardant polymer layers played significant roles in determining the fire reaction properties. Furthermore, post-fire impact properties of flax-epoxy and flax-PP composites depending on burning periods are analysed in this study at the first time. A fully instrumented drop-weight impact testing demonstrates that an increase in heat exposure time led a gradual decrease in impact properties of the composites due to fire-induced damages on fibres and polymers. However, pre-melting and re-consolidation of PP are beneficial to have higher impact energy and force of the flax-PP composite over those of the flax-epoxy counterpart. In addition, the char formation of composites due to intumescent flame retardant enhances the fire reaction properties of composites, whereas there is no significant influence on the post-fire impact characteristics due to highly brittle nature of carbonaceous char.
  • Publisher: London, England: SAGE Publications
  • Language: English
  • Identifier: ISSN: 0731-6844
    EISSN: 1530-7964
    DOI: 10.1177/07316844231158112
  • Source: SAGE Open Access
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