@Article{jrm.2021.013833,
AUTHOR = {Lu Hong, Biqing Shu, Qian He, Zehui Ju, Haiyang Zhang, Xiaoning Lu},
TITLE = {Improving the Properties of Fast-Growing Chinese Fir by Vacuum Hot Pressing Treatment},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {9},
YEAR = {2021},
NUMBER = {1},
PAGES = {49--59},
URL = {http://www.techscience.com/jrm/v9n1/40705},
ISSN = {2164-6341},
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.},
DOI = {10.32604/jrm.2021.013833}
}