What is the preservative made of
Since preservative is also a kind of sterilization insecticide, it has the same place with other uses of sterilization insecticides, such as pesticides, food preservatives, sanitary sterilization insecticides, etc. However, the protection object of wood preservatives is wood, the volume of wood is large, and it is very dense, it needs to be protected for a long time, and the environment used is more complex and harsh, so it is different from other uses of sterilization insecticides. To sum up, wood preservatives should have the following characteristics.
1. security
Preservatives and wood treated by them have the least possibility of poisoning humans and animals, pollution to the environment and fire. The safety of preservatives is not only related to the preservatives themselves, but also to the rational and scientific use. In addition, the preservative solution should not have a corrosive effect on metal or plastic containers and equipment, because corrosion can cause leaks, resulting in pollution to the environment. The handling, processing and other treatment of the treated antiseptic wood should also be safe, and should not emit toxic gases when burning, nor increase the risk of fire.
2. effectiveness
The preservative must be effective in preventing wood damage by wood destroying organisms, and its effect can be measured by laboratory, field and use tests. However, the most effective wood preservatives must be deeply and evenly distributed into the wood to have an effect, so the penetration of the preservatives is very important. The penetration of preservatives and preservatives formula and quality have a very large relationship, preservatives must strictly control the quality of the treatment solution and treatment products.
3. persistance
As required, the preservative must be retained in the wood for many years. There are many factors that affect the durability of preservatives, but two important ones are the physical and chemical properties of the preservatives and the way they are retained in the wood. If the preservative can be chemically decomposed or volatilized at room temperature, its anti-corrosion effect will not last long. If the treated wood is used in a humid place, the active ingredients of the preservative must not be dissolved and lost by rain. Preservatives are resistant to loss or are derived from their own water insolubility, such as creosote, oil-borne preservatives, etc., or after entering the wood, water insoluble substances are formed in the wood, such as CCA and ACQ. In addition, some active ingredients of wood preservatives will be decomposed by some organisms, which will also affect the durability of preservatives.
4. economy
Price is an important factor that must not be forgotten, which is very important for preservative producers, treatment plant owners, as well as marketers and users of treated wood. If the raw materials of a preservative are cheaper, the preparation and manufacturing process is simpler and easier, then the cost of this preservative is lower and the more competitive it is in the market.
