China Plastics ›› 2021, Vol. 35 ›› Issue (1): 37-46.DOI: 10.19491/j.issn.1001-9278.2021.01.007

• Materials and Properties • Previous Articles     Next Articles

Study on Combustion Characteristics of Poly(vinyl chloride)/Bamboo Charcoal Decorative Composites

ZHANG Liang1, CHAI Weisheng1, WANG Shanshan1, LI Wenzhu1, WU Qiang1, ZHANG Wenbiao1(), DAI Chunping2   

  1. 1.College of Engineering,Zhejiang A&F University School,Hangzhou 311300,China
    2.Department of Wood Science,Forest Sciences Centre,University of British Columbia,Vancouver V6T1Z4,Canada
  • Received:2020-07-02 Online:2021-01-26 Published:2021-01-22

Abstract:

The poly(vinyl chloride) (PVC) /bamboo charcoal (BC) composites with different veneers were prepared by melt mixing, hot pressing and surface veneering, and their combustion behavior and smoke generation characteristics were characterized by cone calorimetry, thermogravimetry and thermogravimetry infrared analysis. Their combustion safety was also evaluated comprehensively. The results indicated that the PVC veneer could improve the thermal stability of the composites. The yield of carbon residue was 67.99 wt % at 600 °C with lower amounts of HCl and aromatics formed in the early stage of combustion, which was disadvantageous to the control of total heat release. After the wood veneer was added, the initial thermal degradation started in advance, and the thermal degradation rate increased, resulting in a maximum peak heat release rate of 423.91 kW/m2, a maximum total heat release of 76.63 MJ/m2 and a maximum total smoke release of 2 121.51 m2/m2. In this case, the yield of carbon residue was only 41.78 % at 600 °C with more harmful gas released. In addition, the veneer was easy to make smoke release during a longer period, which was advantageous for smoke suppression in the early stage of combustion. This provides more opportunities for safe evacuation in the early stage of a conflagration. Therefore, the composites developed by this work exhibit some application prospects for home decoration.

Key words: bamboo charcoal, poly(vinyl chloride), composite, veneer, combustion characteristics

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