Journal
COMPOSITES PART B-ENGINEERING
Volume 44, Issue 1, Pages 112-119Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2012.07.005
Keywords
Fibres; Layered structures; Thermal analysis; Mechanical testing
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The potential of a multi-component laminate composite material in terms of improved flame retardancy and adequate mechanical performance is discussed. A double-layer system based on a biodegradable polyhydroxyalkanoates blend was obtained by compression molding. A thin halogen-free flame-retarded layer was located at the top of a kenaf-fiber-reinforced core. Kenaf fibers acted as a carbonization compound promoting charring and building up a superficial insulating layer that protected the material throughout combustion. The impact of different skin/core thickness on the thermal and fire properties was investigated. Synergistic flame retardancy occurs in the cone calorimeter. Chemical and fire investigations confirmed a changed pyrolysis behavior in multicomponent materials. Promising results are obtained in terms of mechanical performance: higher flexural and impact properties were observed in the single fiber-reinforced layer. (C) 2012 Elsevier Ltd. All rights reserved.
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