Mechanical, flammability and thermal degradation characteristics of rice straw fiber-recycled polystyrene foam hard wood composites incorporating fire retardants
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Hard wood–polymer composite (HWC) was prepared, based on hot press technique, by mixing air-dried rice straw waste as a filler into a molten of chemically recycled extended polystyrene foam waste (PS) and its maleated form (PS-g-MA) as a matrix. Two fire retardants (FRs), namely zinc borate (ZB) and/or anhydrous magnesium hydroxide (MH), were dispersed into the composite to compensate for the poor thermal stability and flammability of the composite. Thermal properties of the reached HWC were evaluated by different techniques including thermogravimetric analysis, differential scanning calorimetric, in addition to, flammability analyses. Mechanical characterization was, also, rated based on tensile strength and elongation at break measurements. It was found that incorporation of the nominated fire retardants improved the thermal stability of the final products. Besides, flammability resistance was enhanced as ZB and/or MH was added to the hard wood–polymer composite formulation. The onset temperature of degradation and mass loss rates were significantly reduced in the presence of the FRs. The tensile strength of HWC was reinforced by marked additions of the FRs. The obtained data can fulfill the required optimal performance of the HWC to fire and mechanical characterizations which are necessary for many applications in the residential construction, transportation and furniture industries.
KeywordsPolystyrene waste Rice straw agro-waste Hard wood composite Flammability test Thermal analyses
The authors express their cordial thanks to the Administration of the National Research Centre, Egypt, for providing funding and facilities to carry out this work (Grant No. 10130203).
- 1.Nikolaeva M, Karki T. A review of fire retardant processes and chemistry with discussion of the case of wood–plastic composites. Baltic For. 2011;17:314–26.Google Scholar
- 2.Kim JK, Pal K. Recent advances in the processing of wood–plastic composites. In: Engineering materials, flammability in WPC composites, vol. 32. Berlin: Springer; 2010. p. 129. https://doi.org/10.1007/978-3-642-14877-4_6.
- 7.Abdullah NM, Ahmad I. Fire-retardant polyester composites from recycled polyethylene terephthalate (PET) wastes reinforced with coconut fibre. Sains Malays. 2013;42:811–8.Google Scholar
- 8.Buzarovska A, Bogoeva-Gaceva G, Grozdanov A, Avella M, Gentile G, Errico M. Potential use of rice straw as filler in eco-composite materials. Aust J Crop Sci. 2008;1:37–42.Google Scholar
- 12.Ndlovu SS. Wood–polymer composites utilizing degraded polyolefins as compatibilizers. MSC. Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of the Free State, Qwaqwa Campus; 2011.Google Scholar
- 13.Friedrich K, Breuer U. Multi-functionality of polymer composites: challenges and new solutions. Amsterdam: Elsevier; 2015. p. 122. ISBN:978-0-323-26434-1.Google Scholar
- 20.Van Krevelen DW. Properties of polymers. 3rd ed. Amsterdam: Elsevier; 1990.Google Scholar
- 21.Parida S, Panda M, Parija A, Das SC. Thermal studies of different agrowaste reinforced novolac composites prepared under isothermal conditions. Res J Pharm Biol Chem Sci. 2014;5:1580–92.Google Scholar
- 23.Walter DM, Wajer MT. Overview of flame retardants including magnesium hydroxide. Martin Marietta Magnesia Specialties, LLC. 2015. http://www.magnesiaspecialtes.com.