期刊
COMPOSITES PART B-ENGINEERING
卷 136, 期 -, 页码 168-176出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2017.10.034
关键词
Hybrid; Mechanical properties; Electron microscopy; Physical methods of analysis; Flammability performance
资金
- Ministry of Business, Innovation and Employment, New Zealand Government [UOAX 1004]
Influence of wool fibres (WF) in improving the flame retardant and mechanical properties of polypropylene/kenaf fibre/intumescent ammonium polyphosphate (PP/ICF/APP) composites is described. Flammability of PP/KF/APP/WF composite was evaluated using cone calorimetry, UL 94-V vertical burning tests and thermo-gravimetric analysis, and compared to results of similar composites which contained an ultraviolet ray stabiliser and colourant combination (PP/KF/APP/UVC). Tensile, bending and impact test analyses were also conducted on both sets of composites. PP/KF/APP/WF system had stable residual char at elevated temperatures, significantly improving fire protection. High degree of cross-linked stable char formation and residual char in PP/KF/APP/WF composite provided sufficient evidence of synergistic effect of wool. WF increased the tensile modulus of the composite by approximately 16%, while UVC (together with APP) improved the composite's flexural stiffness by 21%.
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