Characterization of hemp fiber fire reaction

Integrating bio‐resources in materials allows to reduce the environmental impact of the building industry. This study deals with fire‐retardant treatments, alternative to boric acid and ammonium salts solutions, applied to hemp fibers for thermal insulation application. The aim is to limit the energ...

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Bibliographic Details
Published in:Journal of vinyl & additive technology 2023-03, Vol.29 (2), p.259-267
Main Authors: Deborde, Lily, Sonnier, Rodolphe, Dumazert, Loic, Lanos, Christophe, Colson, Valentin
Format: Article
Language:English
Subjects:
bio‐sourced fibers
cone calorimeter
Cone calorimeters
Construction industry
Differential thermal analysis
Engineering Sciences
Environmental impact
fire‐retardant treatments
Hemp
hemp fibers
Materials
Prediction models
Pyrolysis
thermal analysis
Thermal insulation
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Summary:Integrating bio‐resources in materials allows to reduce the environmental impact of the building industry. This study deals with fire‐retardant treatments, alternative to boric acid and ammonium salts solutions, applied to hemp fibers for thermal insulation application. The aim is to limit the energy, sanitary and environmental impacts of the treatment, while optimizing the technical performances. A laboratory protocol evaluates the flame‐retardant effect of the developed treatments. Treated fibers, including commercial treatments, are subjected to characterization tests: direct ignition small flame, thermal analysis (thermogravimetric analysis [TGA], differential thermal analysis [DTA]), pyrolysis‐combustion flow calorimeter and cone calorimeter. Some of the methods have been adapted to be applied to fibrous materials. The obtained results orientate the formulation of a treatment and highlight the complementarity of the analysis methods. Coupling the results, the ConeTools's predictive model leads to the estimation of the reaction to fire class according to the Euroclass. Euroclass C appears accessible with a tailored treatment. Characterisation of hemp fibre fire reaction, left: hemp fibre ‐ middle: graphs showing results of the cone calorimeter ‐ right: cone calorimeter test in progress.
ISSN:1083-5601
1548-0585
DOI:10.1002/vnl.21978