Physical and mechanical properties of particleboards manufactured using charcoal as additives

Abstract

The objective of this work was to evaluate selected physical and mechanical properties of experimental particleboards manufactured from pine and spruce with charcoal particles in their core layer. For all the manufactured boards the average density was 750 kg m -3 , while the mass share of charcoal in the core layer was changed (0%, 10% and 50%). The manufactured panels were tested with respect to their mechanical and physical properties, including formaldehyde emission. The results indicated that the share of charcoal significantly influenced mechanical properties, swelling, and water relations of the boards. In addition, a test on formaldehyde emission from panels were carried out, which revealed that the charcoal share has a considerable impact on the amount of formaldehyde released by the manufactured boards. The 50% content of charcoal caused about 80% reduction of formaldehyde emission.

Recent Developments in Eco-Friendly Wood-Based Composites II

“…For this reason, growing ecological and environmental consciousness drives efforts for the development of new eco-friendly wood-based composites for various end-use applications. In recent years, significant efforts have been made to reduce formaldehyde emissions from wood-based composites via: (i) the reduction of formaldehyde content in resin formulation [4,5]; (ii) the use of scavengers such as tannins, lignin, starch, wheat and hemp flour, and pulp and paper sludge [6][7][8][9][10][11][12][13][14] or other compounds (starch derivatives, charcoal, pozzolan, zeolites, and urea) [15][16][17][18][19] that scavenge formaldehyde; (iii) the post-treatment or surface treatment of the wood-based products [18,20]; (iv) the use of natural resins, including soy protein, tannin, lignin, and starch adhesives [21][22][23]; (v) and the thermal pre-treatment of veneer before bonding [24][25][26]. Comprehensive information on the reduction of formaldehyde emissions in various ways can be also found in several published reviews [4,20,[27][28][29][30].…”

Effects of Density, Cellulose Nanofibrils Addition Ratio, Pressing Method, and Particle Size on the Bending Properties of Wet-formed Particleboard

“…The bending strength of the specimen depends on the compression/tensile sides (faces), but not much on shear unless the specimen is too short (Hayashi et al 2003;Kowaluk et al 2016). The bending properties of particleboard are influenced by many factors, of which density is one of the most influential.…”