The Strength of the Bond
This type of planing is not recommended for structural joints that will be subjected to water soak and drying applications
Abrasive planing
Effective interlocking takes place when the adhesive penetrates sound wood how many cells deep?
2 to 6
This tropical species is known for its high oil content, making bonding difficult.
Teak
If you need to clue a wood composite like MDF or OSB what must you do first in order to achieve a satisfactory bond?
Sand/Surface Plane
How many links make up a glue joint?
5
Adhesive
Wood
Interphase region of the wood and adhesive
If abrasive planing is necessary what is the optimal grit to use in order to still obtain a satisfactory glue joint?
60-80 grit
One way glue solidifies is through loss of solvent, otherwise known as?
Evaporation
Oxidation, extractive migration, and burning the wood's surface all are examples of unintentional wood alteration, from what important step in lumber manufacturing
Kiln Drying
Epoxies, Polyurethanes, Isocyanates
What percentage of all wood is adhesive bonded?
70%
This type of sawblade can produce satisfactory joints
Triple chip grind
Chemical polymerization into cross linked structures that resist softening on heating are the characteristics of?
Door jambs are treated with phosphorous, nitrogen, and boron to help increase the survivabilty of a product during what type of event?
Fire
During OSB production, hot presses casues what to migrate to the surface
Wax
What are some natural adhesives that early Egyptians and Romans used?
Blood and starches
This organic compound in wood can make the water based adhesive hydrophobic, leading to a bad glue joint.
Extractives
Covalent bonding is stronger than this type of bond. However, this type of bond plays a major role in many wood adhesive systems.
Hydrogen bonds
This intentional alteration process of wood, changes the color, the decay resistance, and stability of the lumber by 5x to 15x.
Rockland Flooring bonds wood to non wood materials to make truck flooring. This premier product is known by what name brand?
Pound Saver Flooring
LP (Louisiana Pacific) of Tomahawk takes aspen or popple and makes what premier product?
LP SmartSide Siding
It is recommended to surface or resurface the wood you intend to glue up together 24 hours or less before bonding to help remove what?
Surface uneveness from changing MC
Pressure enhances wetting of the woods surface by:
Forcing the adhesive to flow over the surface
Displace air blockages
Penetrating the adhesive into the wood
This Southeast Asian wood species is different from other wood, as its extractives are naturally acidic.
Meranti
This type of engineered wood product doubles its tensile strength by adding 1%-3% carbon fiber on the bottom side.
Fiber Reinforced Polymers
How does the use of adhesives extend our raw material?
Adhesives enable us to use low value raw materials into high value products