The reason for such diversity is the difficulty of the problem of fire protection of wood material, and with the possibility of variation in a wide range of substances contained. That's why, when choosing the best flame retardant should take into account a number of features. Fire retardant impregnation should not increase the hygroscopic properties of wood or degrade its mechanical properties must be safe for humans and animals, shall not release harmful substances after application. Typically, flame retardants used to impregnate wooden structures operating in conditions precluding direct and prolonged exposure to moisture. In this regard, on the market are mostly washed out and legkovymyvaemye funds for water-based. For outdoor use they are used in combination with subsequent paint layer.
The necessary condition is the absence of their negative influence on the adhesion of coatings. When selecting fire-resistant impregnation should pay attention and concentration index Hydrogen ion – pH of the medium. For example, there are flame retardants with pH = 1,5, close to the pH of strong acids. The use of such funds is not safe for the consumer and requires careful observance of the special conditions storage and use. Many flame retardants, have significant corrosion aggressiveness towards how to color and for black metals. In some cases this may limit their use. For example, there are cases where the use of fireproof materials with high pH leads to the destruction or deterioration of the roof made of copper or galvanized metal.
Some flame retardants provide control toning timber. This allows you to visually assess the quality and uniformity of application of flame retardant. For example, the famous composition " ognebio TRAC" gives wood a pink tint, and can quickly adopt and control the results of flame retardants work. Some formulations can be tinted immediately before use, and some require the use of well-defined colors. RezultatyPri all, it would seem complexity and confusion fireproof timber should say straight out that the ultimate goal of this work is not the preservation of the primordial form structures. The main objective of fire protection is the security people so that they confidently out of the affected buildings, and that they had confidence in a happy outcome. Is not that a successful outcome?