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Ramie fabric Elium® composites with flame retardant coating: Flammability, smoke, viscoelastic and mechanical properties
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.
RISE Research Institutes of Sweden, Safety and Transport, Fire Technology.ORCID iD: 0000-0002-6430-6602
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2020 (English)In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 137, article id 105986Article in journal (Refereed) Published
Abstract [en]

This investigation studied the utilization of intumescent thermal resistive mats to provide surface protection to the core natural fibre-reinforced Elium® composite structural integrity. The intumescent mats contained flame retardant (FR) i.e. expandable graphite (EG) with four different expansion ratios and alumina trihydrate (ATH). All natural fibre thermoplastic composites were fabricated using a resin infusion technique. The impact of char thickness and chemical compositions on the flammability and smoke properties was investigated. It was found that surface protection significantly reduced the peak heat release rate, total smoke release, smoke extinction area and CO2 yield, and substantially enhanced UL-94 rating, time to ignition and residual char network, depending on the EG exfoliation ratio, ATH and mineral wool fibre. The glass transition temperature increased for the FR composites containing EG with lower expansion ratio. Inclusion of intumescent mats increased the strength of the composites while it had a negative effect on the modulus. 

Place, publisher, year, edition, pages
Elsevier Ltd , 2020. Vol. 137, article id 105986
Keywords [en]
A. Natural fibres, A. Thermoplastic resin, E. Vacuum infusion, Elium®, Alumina, Aluminum oxide, Expansion, Glass transition, Mechanical properties, Mineral wool, Natural fibers, Chemical compositions, Expandable graphite, Fibre reinforced, Flame retardant coatings, Peak heat release rates, Smoke properties, Surface protection, Thermoplastic composite, Smoke
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Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-45066DOI: 10.1016/j.compositesa.2020.105986Scopus ID: 2-s2.0-85085739121OAI: oai:DiVA.org:ri-45066DiVA, id: diva2:1449796
Note

Export Date: 15 June 2020; Article; CODEN: CASMF; Funding text 1: The financial support for this project is provided by Chalmers Area of Advance: Materials Science . The work was performed by the support of All Wood Composites Platform based in Chalmers University of Technology and the fire tests were sponsored by RISE. Special thanks to Arkema company and Technical Fibre Products Ltd. for sponsoring the thermoplastic resin and commercial intumescent mats. The authors would like to thank Malo Hedouin and Chirag Gurumurthy for the technical support in the samples’ preparation and thank Georgia Manika and Ahmet Semih Ertürk for helping with the SEM sample preparation.

Available from: 2020-06-30 Created: 2020-06-30 Last updated: 2023-06-05Bibliographically approved

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Blomqvist, PerSandinge, AnnaBisschop, Roeland

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