Abstract
The present study deals with the effects of wood flour on thermal and burning properties of wood flour-poly(vinyl chloride) composites (WF-PVC) using thermogravimetric (TG), cone calorimetry (CONE), and pyrolysis–gas chromatography/mass spectrometry (Py–GC/MS). TG tests show that an interaction occurred between wood flour and PVC during the thermal degradation of WF-PVC. Wood flour decreased the temperature of onset of decomposition of PVC. However, the char formation could be increased by adding wood flour to PVC. CONE test indicates that wood flour had positive effects on heat release and smoke emission of PVC. Comparing with PVC, WF-PVC reduced average heat release rate and the peak HRR by about 14 and 28%, respectively; smoke production rate was also decreased. The degradation mechanism was studied by Py–GC/MS. The results show that the volatile pyrolysis products of WF-PVC are very different from PVC. The yields of HCl and aromatic compounds decreased dramatically, and the aliphatic compounds increased by the incorporation of WF.
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Acknowledgements
The authors are grateful for the support from the Chinese Natural Science Foundation for projects 30972313 and 31010103905 and the Breeding Plan of Excellent Doctoral Dissertation of Northeast Forestry University (GRAP09) in China. Y. Fang also thanks the China Scholarship Council (CSC) for financial support to study at the University of Toronto.
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Fang, Y., Wang, Q., Bai, X. et al. Thermal and burning properties of wood flour-poly(vinyl chloride) composite. J Therm Anal Calorim 109, 1577–1585 (2012). https://doi.org/10.1007/s10973-011-2071-y
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DOI: https://doi.org/10.1007/s10973-011-2071-y