The role of solid content of adhesive and panel density on the dimensional stability and mechanical properties of particleboard

Abstract

The aim of this study was to investigate the role of the panel density and solid content of adhesive on the physical (thickness swelling) and mechanical properties (modulus of rupture, modulus of elasticity, and internal bonding strength) of particleboard composite. For the changing panel density, two different target densities (0.60 and 0.65 g/cm3), three different hot pressing pressures (20, 25, and 30 kg/cm2), two different shelling ratios (35% and 45%), and two different surface coating materials (at 70 and 90 g/m2 grammage) were applied during the manufacturing of test panels. Increasing pressure improved all the properties of particleboard. However, applying lower or higher pressure level than required and necessary level negatively affected the thickness of the panels. Shelling ratio was found to be effective on the mechanical and physical properties of particleboard. Increasing panel density improved the strength properties and thickness swelling after 2 h immersion. However, high panel density negatively affected the thickness swelling after 24 h immersion. Coating of particleboard surfaces caused superior mechanical, except for internal bond strength, and physical properties. Melamine-impregnated paper grammage significantly improved the modulus of rupture, modulus of elasticity, and thickness swelling. Increasing paper grammage improved these properties. However, internal bond strength was not affected by paper grammage. Decreasing solid content of adhesive in the surface layers significantly improved all the properties of particleboard composite.

Influences of Layered Structure on Physical and Mechanical Properties of Kenaf Core Particleboard

“…Both KPBs showed linearly increasing MOE, MOR, and IB values with increasing density. This is in accordance with former studies (e.g., Saotome and Korai 2013;Sari et al 2013). Normally, a higher board density means closer contacts between two adjacent particles and more chances of interfacial adhesion.…”

Hybrid Particleboard Made from Bamboo (Dendrocalamus asper) Veneer Waste and Rubberwood (Hevea brasilienses)

“…Furthermore, the ratio of rubberwood to bamboo did not affect the IB of hybrid boards. Hybrid boards were expected to have more compaction because of the presence of small rubberwood particles, as particleboards with more compact and tighter structures have increased mechanical properties (Sari et al 2013).…”

The quality comparison of particleboards produced from heartwood and sapwood of European larch

“…Particleboard is a very popular engineered wood based panel product manufactured from wood particles and synthetic resins or other suitable binders (Baharoglu et al 2013). Another definition of particleboard is given as a wood-based panel composite consisting of varying sizes and shapes of particles from lignocellulosic materials bonded together with an adhesive under high temperature and pressure (Sari et al 2013). The production of particleboards has positive effects on the environment due to using wood residues (Garay et al 2009) Particleboards are mostly used in three layers.…”

“…Many studies have been performed on the effects of various factors on the quality properties of particleboard. These factors are; the usages of various raw materials such as wood bark (Blanchet et al 2000), pine cone (Ayrilmis et al 2009), cotton (Gossypium hirsutum) stalks (Nazerian et al 2016), canola (Brassica napus) straws (Kord et al 2016), and needle litter (Nemli et al 2008), different parameters of the wood such as log position (Muhcu et al 2015), permeability of wood (Lyman 1969), anatomical and chemical properties of wood (Baharoglu et al 2013), moisture content of raw material (Baharoglu et al 2012), acidity of the particles (Akyuz et al 2010), wood extractives (Foster 1967), density of wood (Maloney 1977), mature and juvenile wood (Wasniewski 1989), and raw material growth region (Bardak et al 2017). The parameters of the particleboard production, such as dimensions of the particles (Motted 1967), residue type and tannin content (Moubarik et al 2013), paraffin application technique (Baharoglu et al 2014), hardener type, urea usage and conditioning period (Atar et al 2014), solid content of the adhesive and panel density (Sari et al 2013), decor paper properties (Bardak et al 2011), and shelling ratio (Nemli and Ozturk 2006) are investigated.…”