Einführung in flüssige Flammschutzmittel

Apply reagents that prevent the spread of fire or flames to paper, cardboard, wood, textiles, and plastics. If the temperature reaches a high enough level, it is inevitable that these organic compounds will be destroyed by fire.

However, many treatment agents can reduce or prevent the spread of flames after the ignition source is eliminated. These treatment agents are called flame retardants, and the treated substances are called "fire-resistant agents". Substances that reduce or prevent this effect are called "flame retardant agents" because they do not have flames but can burn due to heat or residual heat after the flame is extinguished. Various fire-resistant substances have been proposed, and some have even compiled literature catalogs of fire-resistant agents for paper, cardboard, wood, textiles, and plastics.

flame retardant

The methods of applying fire-resistant agents to paper or cardboard include: adding (suitable for water-insoluble substances) in a pulping machine, spraying, impregnation, slot sizing, or calendering roller application, or applying fire-resistant agents as a component of coating agents to paper and cardboard. Substances with strong expansion properties (such as bissilver amine) are generally applied as coatings, which can prevent flame spread due to significant volume expansion during combustion. Many fire-resistant agents are soluble in water and can be classified into temporary, semi permanent, and permanent types based on their resistance to removal by water or other solvents.

General water-soluble fire retardants include weak acid salts of potassium, sodium, magnesium, and zinc, such as phosphoric acid, carbonate, silicate, aluminate, or weak base salts. Permanent fire retardants include inert fillers or fibers (such as asbestos, glass fiber, bentonite, etc.), insoluble inorganic compounds (such as antimony, tin, bismuth, or other cationic oxides, sulfides, silicates, tungstate, and phosphates), and halogenated organic compounds (such as chlorinated paraffin, chlorinated biphenyl, chlorinated rubber, chlorinated ethylene polymer).