The advent of synthetic adhesives has transformed the structural applications of wood. However, a persistent issue in adhesively-bonded wood products has been moisture durability. When designing wood based composites, moisture durability will depend on both the wood phase and the adhesive phase. A key question, therefore, is how does one...
The breaking radii of variously discolored veneers of six different hardwood species were small enough, for most of the discolorations, to indicate that such veneers can be used successfully on members having curved surfaces. When expressed in terms of the minimum radius of curvature attained without fracturing, the breaking radius...
Southern pine and Douglas fir veneer samples were dried in air
under the following conditions: air temperatures were 350, 600, and
750°F; air velocities were 50, 100, and 150 feet per second, and
angles of impingement of air against the veneer surfaces were 0°,
45°, and 90°. The resulting drying...
This study was undertaken to determine whether Douglas-fir (Pseudotsuga
menziesii (Mirb.) Franco) veneer could be platen-dried and then
sucessfully glued into two-ply parallel-laminated panels.
A range of veneer thicknesses, platen temperatures and final dry
moisture contents were examined. Thicknesses included were nominal
0.1, 0.2, 0.3 and 0.4 inches; platen temperatures...
Using Southeast Asian hardwood veneers for exterior plywood siding
has caused problems because some species produced quality plywood while
other species produced plywood which delaminated soon after being put
in service in exterior exposure. This study attempted to improve the
durability of glue bonds of some Southeast Asian hardwood veneers...
A new carbohydrate-phenol based resorcinol resin
(CPR resin) was synthesized by end capping a known
carbohydrate-phenol based resole with resorcinol under
basic reaction conditions. Synthetic parameters, such as
duration of cook, pH, and the amount of resorcinol and
formaldehyde were varied to produce resins with molecular
weights (Mw) ranging from...