Fireproof coatings are coatings used to reduce the flammability of the surface of coated materials, prevent the spread of fire, isolate the source of fire, extend the ignition time of the substrate, and increase thermal insulation performance, with the aim of improving the fire resistance limit of coated materials. The reason why it has fire protection performance is because it contains an appropriate amount of magnesium hydroxide. Magnesium hydroxide is an ideal flame retardant that can give fireproof coatings good flame retardancy.
With the high-rise, clustering, and large-scale industrialization of construction projects and the widespread use of organic synthetic materials, fire protection engineering has become increasingly important. Fireproof coatings are widely used in public buildings, vehicles, airplanes, ships, ancient buildings and cultural relics protection, electrical cables and other fields due to their convenience and good fire protection effect.
Fireproof coatings mainly use magnesium hydroxide as an auxiliary agent. Under high temperature conditions, it can decompose non-toxic inert gases and absorb heat consumption. The surface can slowly carbonize and regenerate an expanded foam layer to reduce heat conduction and reduce the rate of temperature rise of components. At the same time, it has good fire resistance, high adhesion, good water resistance, no toxic gas generation, environmental protection and other characteristics.
However, when choosing magnesium hydroxide as a flame retardant, some requirements should be noted. It is best to use powdered magnesium hydroxide to ensure compatibility with polymers without affecting the mechanical properties of materials; magnesium hydroxide with higher purity, smaller particle size and uniform distribution has better flame retardancy; when the surface polarity is low, particle aggregation performance decreases , The dispersibility and compatibility in materials increase, and the impact on mechanical properties is reduced. Ze Hui Company found through research that these factors will affect the later use effect of materials.
Post time: Jul-21-2023