What is wood preservatives?

wood preservative is a process or substance that keeps safe from dangers, such as rot, insects or water damage longer than if the wood remains untreated. A large number of different chemical and mechanical processes are used to preserve wood. Copper is the most common substance used in non -productive wood. As far as purely mechanical processes are concerned, thermal and fire treatment is the most common. In all cases, the aim is to remove air and water from the wood without causing a split or cracking. These substances are still used in modern wood preservation, there are some circumstances. In general, petrochemicals in the playground and tar are applied by themselves and eliminate a part of the mess associated with these substances.

There are several different compounds used based on the overall protection target and use for wood. The most common substance without the household is chrome copper (approx). The wood preservative approximately uses copperAs a fungicide and arsenic as an insecticide, while chrome keeps them both in wood. As a result, the wood has a slight green color, a common view of the outer fences, the on -board material and the poles of the power supply.

Since Arsen is so poisonous, many areas have moved away from the new construction. Instead, most preservatives of wood left for alkaline copper Quaternary (ACQ) or copper Azol (CA-B). These preservatives operate in almost the same way as about approximately, but with smaller negative side effects. As a disadvantage, it destroys a high amount of copper in ACQ, resulting in much more extensive construction costs.

Out of copper, several other chemicals are used. Two of the more common endless compounds are boritan and silicates. They provide sufficient protection, but very little through the insecticide. On addity of these chemicalare some areas.

Copper, boritan and silicate compounds are all preservatives for water. Oil -based compounds, such petrochemicals and vegetable oils are common in industrial treatments. Some of these chemicals have high toxicity and unpleasant odor for humans. As a result, they are only used in areas where wood is constantly wet and where there are not many people.

Thermal treatment is common in some areas as a chemical alternative. Heat as a wood preservative has mixed results; It often depends on the method used and the type of wood. The basic idea is that the heat changes the make-up of wood fibers, making it more and less insect appetites.