Flame Retardancy and Physical-mechanical Properties of Poplar Veneers Impregnated by Calcium Carbonate

Authors

  • Pingping Guo College of Horticulture and Plant Protection, Henan University of Science and Technology
  • Xiping Zhao College of Horticulture and Plant Protection, Henan University of Science and Technology https://orcid.org/0000-0002-4444-4194
  • Xiaodong Zhu Key Laboratory of Bio-Based Material Science and Technology – Ministry of Education, Northeast Forestry University
  • Yu Liu Key Laboratory of Bio-Based Material Science and Technology – Ministry of Education, Northeast Forestry University
  • Qi Feng Key Laboratory of Bio-Based Material Science and Technology – Ministry of Education, Northeast Forestry University

Keywords:

Calcium carbonate, Flame retardancy, Mechanical-physical properties, Poplar veneers

Abstract

Fast-growing poplar (Populus tomentosa Carr) can produce wood veneers, but their poor quality restricts their application in construction and building. Modification of wood has the potential to improve its properties. In this study, poplar veneers were impregnated with calcium carbonate (CaCO3) to reinforce their performance. The results showed that CaCO3 was uniformly distributed in cell lumens in impregnated veneers. After impregnation, the maximum weight gain rate was up to 41.4%, and water uptake decreased from 6.82% to 0.94%. The hardness increased from 7.6 to 10.0 MPa, and the extent of wear fell from 0.91% to 0.05%. The ignition time was prolonged, and the heat release rate and total heat release were low. Experimental results demonstrated that CaCO3 improved the physical-mechanical properties and flame retardancy of poplar veneers.

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Published

2023-04-13

Issue

Vol. 18 No. 2 (2023)

Section

Research Article or Brief Communication