Ramie fabric Elium® composites with flame retardant coating: Flammability, smoke, viscoelastic and mechanical properties
Artikel i vetenskaplig tidskrift, 2020

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.


Natural fibres

Thermoplastic resin

Vacuum infusion


Pooria Khalili

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Brina Blinzler

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Roland Kádár

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Per Blomqvist

RISE Research Institutes of Sweden

Anna M Sandinge

RISE Research Institutes of Sweden

Roeland Bisschop

RISE Research Institutes of Sweden

Xiaoling Liu

University of Nottingham Ningbo China

Composites Part A: Applied Science and Manufacturing

1359-835X (ISSN)

Vol. 137 105986


Hållbar utveckling






Annan materialteknik

Kompositmaterial och -teknik


Chalmers materialanalyslaboratorium



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