Application of Aluminum Hydroxide Fireproof Coatings in Electrical Wires and Cables

With the rapid advancement of socio-economic development and technology, people's material and cultural standards continue to rise. High-rise buildings, underground projects, large-scale structures, power and telecommunications facilities, and major enterprises are proliferating, with extensive internal wiring and cabling. To prevent the occurrence and spread of cable fires, thereby minimizing economic losses, the use of aluminum hydroxide fireproof coatings as flame-retardant protection for cables holds significant importance. This approach helps prevent initial fires, slow the spread of flames, safeguard national and public life and property, and advance firefighting efforts.

Cable fireproof coatings, as specialized coatings, consist of two components: a base material and a flame-retardant additive (aluminum hydroxide). Beyond providing the decorative function of ordinary coatings and offering physical protection to the cable substrate, they must also possess the specialized properties of flame retardancy and fire resistance.

Through experiments examining the effects of adding aluminum hydroxide flame retardant on the fireproof performance, smoke emission, and corrosion resistance of fireproof coatings, the following conclusions were drawn:

1. Aluminum hydroxide delivers excellent flame retardancy even at low dosages. It significantly enhances the fire resistance and physicochemical properties of cable fireproof coatings while reducing costs.

2. Incorporating aluminum hydroxide flame retardant markedly reduces smoke emission from cable fireproof coatings. This enables the coatings to produce minimal smoke and toxic gases during combustion while providing effective flame retardancy and thermal insulation.

3. The technical approach of incorporating aluminum hydroxide flame retardant into cable fireproof coatings enables the developed formulations to exhibit excellent expansion and foaming properties upon application. This creates a dense, uniform fireproof and heat-insulating layer that provides effective protection for cables. Optimal performance is achieved when aluminum hydroxide is added at 7%, yielding both superior fire resistance and favorable physicochemical properties alongside excellent wear resistance.