Preservative wood is still a relatively new product at present. It is a difficult problem for consumers who have just contacted how to identify their quality. Here is a method that can help customers make their own choices with simple methods.
A simple method to identify the quality of pineapple preservative wood (no bran is better) intuitively, the finer the wood ring is, the better the material is generally. Because the tree ring density indicates that the wood grows slowly. In short, the wood with less bran in section should be better wood.
The method to identify the quality of wood processing (uniform specifications, small error, good processing quality) can first be seen from the wood as a whole whether the specification is correct and neat, and there is no big error. Generally, the error of thinner plate should be less than 0.5-1 mm; the overall error of larger size material should not be greater than 2 mm. Generally, through the material under the production line, the specification is neat, and there is no error Large error will cause construction difficulty. In addition, for planing material, it is necessary to see the quality of surface planing. Smooth and natural is better.
3. How to identify the stability of wood preservatives
(the one with the smallest color change in the soaking water, the better the preservative stability) take the samples of different preservative wood (with the same specifications and the same moisture content) and immerse them in the water with the same temperature and volume. After the same soaking time, observe the color of the water. The one with the least color change should be the one with the best preservative stability, Because the preservative concentration may also vary greatly. After preservative treatment, because the stability of different preservatives varies greatly, after pressure treatment, the stability of wood is also greatly different. The use of preservatives with poor quality will not greatly improve the preservative performance of wood, on the contrary, it will cause great potential harm.
4. The method to identify the quality of wood preservative pressure treatment (sapwood fully immersed in preservative, clean and uniform surface is good) as far as Pinus densiflora is concerned, the quality of preservative completely immersed in sapwood is good, because the heartwood part of this tree species has natural durability. However, most other tree species should be soaked completely