1. Heat-Pressing Modifiers
Heat-pressing modifiers are commonly used agents that alter the structure and properties of wood through the application of heat and pressure. Common examples include phenolic resins, urea-formaldehyde resins, and epoxy resins.
2. Chemical Modifiers
Chemical modifiers alter wood properties through chemical reactions, imparting characteristics such as resistance to decay, insects, water, and fire. Common examples include CCA, ACQ, and CA.
3. Biological Modifiers
Biological modifiers utilize organisms-such as microorganisms or enzymes-to alter wood properties. While they offer advantages like environmental friendliness and renewability, the modification process is relatively slow. Common examples include wood-modifying enzymes and fungi.
