Phosphorus-nitrogen-boron compounded system-containing timber fire retardant

Abstract

The invention discloses a phosphorus-nitrogen-boron compounded system-containing timber fire retardant. The phosphorus-nitrogen-boron compounded system-containing timber fire retardant comprises, by mass, 20-40% of phosphoric acid, 15-20% of dicyandiamide, 5-15% of a boron compound, 5-20% of triphenyl phosphate, 5-15% of aluminum sulfate, 5-10% of ammonium molybdate, 0.5-3% of triethanolamine and 0.1-1% of pentaerythritol. Phosphoric acid and dicyandiamide undergo an in situ reaction to produce carbamido phosphate, the carbamido phosphate is mixed with a boron compound, triphenyl phosphate and aluminum sulfate, and the mixture is added with ammonium molybdate as a smoke inhibition synergist, triethanolamine as a surfactant and pentaerythritol as a charring synergist so that the phosphorus-nitrogen-boron compounded system-containing timber fire retardant is obtained. The fire retardant has good fire retardant and smoke inhibiting effects, low hygroscopicity, good size stability and use convenience, does not contain halogen, satisfies environmental protection requirements and has anticorrosion and anti-moth functions.

Description

technical field [0001] The invention relates to the technical field of wood flame retardants, in particular to a wood flame retardant containing phosphorus, nitrogen and boron compound system. Background technique [0002] Wood is extremely flammable, and it is easy to cause a fire and cause damage to people and property. In order to reduce the risk of fire, the necessary fire-retardant treatment should be carried out on the wood. The currently used wood flame retardants can be divided into phosphorus flame retardants, halogen flame retardants, boron flame retardants, metal hydroxide flame retardants and combination flame retardants of various elements according to the effective flame retardant elements. Among these flame retardants, halogen flame retardants will produce a large amount of harmful gases when burned, which will have adverse effects on the human body and the environment, and have been gradually eliminated and banned; metal hydroxides such as aluminum hydroxide...

AI Technical Summary

Problems solved by technology

The currently used wood flame retardants can be divided into phosphorus flame retardants, halogen flame retardants, boron flame retardants, metal hydroxide flame retardants and combination flame retardants of various elements according to the effective flame retardant elements. Among these flame retardants, halogen flame retardants will produce a large amount of harmful gases when burned, which will have adverse effects on the human body and the environment, and have been gradually eliminated and banned; metal hydroxides such as aluminum hydroxide and magnesium hydroxide Flame retardants have not been widely used due to the large amount of addition and poor compatibility with organic substances; due to the advantages of phosphorus, nitrogen and boron multi-component composite systems, which are easily soluble in water and have good flame retardancy and smoke suppression, they are currently suitable for wood retardancy. Most of the flame retardants are phosphorus nitrogen boron flame retardants