Increasing the hardness of wood-composite panels by nanosilver

IRG/WP 16-40715

H R Taghiyari, J Norton, K Heidarhaee

Effect of silver nanoparticles on hardness in medium-density fiberboard (MDF) was studied here. A 400 ppm aqueous nanosilver suspension was used at three consumption levels of 100, 150, and 200 mL/kg, based on the dry weight of wood fibers; the results were then compared with the control panels. The size range of silver nanoparticles was 30-80 nm. Composite mats were hot-pressed for 6, 8, and 10 min. Results showed that the uniform and even dispersion of nanoparticles throughout the MDF-matrix significantly contributed to an increase in the hardness at lower hot-press time of 6 min. In the longer hot-press times, however, over-heating of the mat resulted in significant a decrease of hardness values. Significant high correlation was observed between water absorption and thickness swelling.

Keywords: composite board, heat transferring property, metal nanoparticles, nanosilver, thermal conductivity coefficient, wood fiber

Conference: 16-05-15/19 Lisbon, Portugal

Download document (485 kb)
free for the members of IRG. Available if purchased.

Purchase this document