The key to treating wood with flame retardants and flame additives is to carry out flame retardant treatment on the wood in the method, so that the wood has better flame retardant properties and improves the permeability of the wood flame retardant solution. application. Spray and immersion are two treatment methods.
1, Spray treatment refers to the coating or spraying of flame retardants or flame retardant coatings on the surface of wood resources and related products after molding, isolating heat sources, preventing the material surface from coming into contact with air, and reducing the performance of the combustion system. For wooden structural materials with low flame retardant requirements, as well as wooden components of ancient buildings that are not easily soaked. The advantage of spray coating treatment is that it has less fire control and less impact on the physical and mechanical properties of wood. This flame retardant has good flame retardancy, simple process, but the disadvantage is that it covers the texture of the logs, and if the protective layer is damaged, the flame retardancy will disappear.
Immersion treatment and flame retardants are all water-soluble solvent types, which can be treated by impregnation and dosing. Immersion treatment is a flame retardant treatment method that injects a flame retardant solution into wood or wood-based panels under different pressure conditions, including atmospheric pressure, vacuum, and comprehensive practice. There is a problem of impregnation treatment for flame retardant treatment of wood structural materials in the analysis method, especially the high-pressure impregnation method, which is widely used in production and has good flame retardant effect.
Red phosphorus is a good flame retardant in halogen-free flame retardants, with advantages such as low dosage, high flame retardant efficiency, low smoke, low toxicity, and wide range of applications. Generally, red phosphorus is prone to oxidation and absorption of moisture in the air, causing dust and difficulty in transportation. Polymer materials have poor solubility. To solve this problem, the microencapsulation method can be used to produce red phosphorus.
