In the furniture and construction industries, there is increased demand for lightweight, high-performance, and low-maintenance materials with specific properties. Increased demand necessitates testing of new and composite materials to find a viable alternatives to classical materials. In this study, two different types of cork layered plywood composites (plywood board with a cork core (PLYW-K1)...

Urea-formaldehyde (UF) resin (F/U: 1.25), melamine-urea-formaldehyde (MUF) resin (F/(U+M): 1.05), and three kinds of wood species including poplar (Populus davidiana Dode), beech (Fagus engleriana Seem.), and eucalyptus (Eucalyptus robusta Smith) were used to produce plywood. The effects of sealing treatment and wood species on the formaldehyde emissions were studied. The anatomical characteris...

To evaluate disinfection methods for environments contaminated with bioterrorism-associated microorganism (Bacillus anthracis), we performed the following experiments. First, the sporicidal effects of sodium hypochlorite on spores of five bacterial species were evaluated. Bacillus atrophaeus was the most resistant to hypochlorite, followed in order by B. anthracis, Clostridium botulinum and Clo...

To prepare a low-formaldehyde soy-based adhesive with good water resistance, phenol-formaldehyde modified with glutaraldehyde (PFG) with lower free phenol and free formaldehyde contents was used to cross-link the soy-based adhesive. The results showed that the mechanical properties and water resistance of plywood prepared with soy-based adhesive with PFG was better than that of plywood with the...

K-factor has Ions been used as a modifier of section modulus In the calculation of bending moment for plywood beams. No comparable modification of moment ot inertia is included In current reoommendatioDS for calculating plywood deflection at span-depth ratios of 30: 1 or greater. Results of limited testing lend support 'to the authors' contention that, where "shear" strains are signifIcant, the...

The insecticidal pyrrole chlorfenapyr was applied to concrete, vinyl tile, and plywood surfaces, at an application rate of 1.1 gAIm . Adult Tribolium castaneum (Herbst), the red flour beetle, and adult Tribolium confusum (Du Val), the confused flour beetle, were exposed for 2 and 4 h, removed, and held without food for 7 d post-exposure. All beetles survived the initial exposures, but survival ...

Laboratory tests on relatively small plywood box beams are described. The results suggest that stability of the plywood webs of more realistically sized box beams is not ensured by the rules in timber design codes. A literature search failed to produce sufficient relevant material on plywood panel stability. Hence, the decision to proceed with the theoretical program whose preliminary steps are...

Ukrainian companies mainly use birch in the manufacture of plywood, but species, such as black alder, are not yet widely used plywood due to their poorer properties. It is well known that thermal compression often improve properties solid wood. Good lay-up schemes veneer can maximize advantages and minimize disadvantages these wood generally utility value plywood. This research aimed develop pa...

Plywood is a structural composite mainly applied in construction. For this purpose, some sort of preservative treatment recommended to increase its durability. One option the available treatments heat treatment, which promotes modification wood properties. This carried out on final product (plywood), because it can reduce strength if veneers. However, no study has proven such reduction. Therefo...