Antiseptic wood is a kind of wood-based panel made by pressing with pressing plate. If we don't control the moisture content of wood, we often have some bad effects. What are the specific hazards? Next, Shandong anti-corrosion wood manufacturers will introduce to you.
1. Drying and curing of hazardous coatings
Due to the high moisture content of the wood, the contact area between the coating and the wood is wet, which endangers the evaporation of diluent and the chemical cross-linking reaction between resin and curing agent. Therefore, it can also endanger the drying rate and complete curing of the coating, resulting in non drying or incomplete drying.
2. Paint adhesion damage
With the desorption of water, the coating will crack, expand and separate, resulting in poor adhesion.
3. It causes fungi to grow
Because high moisture content will lead to the growth of decaying fungi, molds and chromotropic bacteria, which will lead to the decay and damage of preservative wood.
4. Whiten wet coating
When preservative wood is not dried well, the water in the wood will enter into the coating under the evaporation of diluent, which often leads to the whiteness of wood. If the moisture cannot be released, the transparency of the paint will be damaged by fog.
5. Causes pinholes and bubbles
Because polyurethane coating is easy to react with water and produce gas. When the gas escapes, bubbles will be produced, leading to pinholes and film defects.
6. Unique colors
High moisture content will damage the colorability of preservative wood. When the moisture content of the wood changes greatly, the paint will change color with the collapse of the wood, resulting in uneven color.