Open Access
ARTICLE
Improving the Properties of Fast-Growing Chinese Fir by Vacuum Hot Pressing Treatment
Lu Hong1, Biqing Shu1,2, Qian He1, Zehui Ju1, Haiyang Zhang1, Xiaoning Lu1,*
1 College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
2 College of Civil Engineering, Yangzhou Polytechnic Institute, Yangzhou, 225127, China
* Corresponding Author: Xiaoning Lu. Email: luxiaoning-nfu@126.com
Journal of Renewable Materials 2021, 9(1), 49-59. https://doi.org/10.32604/jrm.2021.013833
Received 23 August 2020; Accepted 24 September 2020; Issue published 30 November 2020
Abstract
Chinese fir was compressed by vacuum hot pressing and conventional
hot pressing at different temperatures (180°C, 200°C and 220°C), respectively.
The color parameters of the heat-compressed sample were measured, the relative
mechanical properties of the material were tested and changes in the chemistry of
fir were investigated using Fourier transform infrared spectroscopy (FTIR) and Xray photoelectron spectroscopy (XPS). The results indicated that the color difference between compressed and untreated wood increased gradually with the
increase of temperature. Compared with the conventional hot pressing treatment,
the color difference (ΔE*) of the Chinese fir treated by vacuum hot pressing
decreased by 43.73%, 69.91%, and 77.17%, respectively. The mechanical properties (bending elastic modulus and bending strength) of Chinese fir treated by
vacuum hot pressing were significantly improved. The 24-hour water absorption
thickness expansion rate of fir treated by vacuum hot pressing is smaller than that
of conventional hot pressing. It is implied that vacuum hot pressing treatment is
an effective method to produce compressed wood, which can improve the
mechanical properties and dimensional stability of wood, and reduce the influence
of carbonization on wood color.
Keywords
Cite This Article
APA Style
Hong, L., Shu, B., He, Q., Ju, Z., Zhang, H. et al. (2021). Improving the properties of fast-growing chinese fir by vacuum hot pressing treatment. Journal of Renewable Materials, 9(1), 49-59. https://doi.org/10.32604/jrm.2021.013833
Vancouver Style
Hong L, Shu B, He Q, Ju Z, Zhang H, Lu X. Improving the properties of fast-growing chinese fir by vacuum hot pressing treatment. J Renew Mater. 2021;9(1):49-59 https://doi.org/10.32604/jrm.2021.013833
IEEE Style
L. Hong, B. Shu, Q. He, Z. Ju, H. Zhang, and X. Lu "Improving the Properties of Fast-Growing Chinese Fir by Vacuum Hot Pressing Treatment," J. Renew. Mater., vol. 9, no. 1, pp. 49-59. 2021. https://doi.org/10.32604/jrm.2021.013833
Citations