What fire-retardant additives are commonly incorporated into composite materials for outdoor planter safety?
Composite materials used in outdoor planters often incorporate fire-retardant additives to enhance safety and reduce flammability. Common additives include aluminum hydroxide, magnesium hydroxide, and ammonium polyphosphate, which release water or form protective char layers when exposed to heat. Halogenated compounds like brominated flame retardants are also used but are less eco-friendly. Intumescent additives expand under heat, creating an insulating barrier. These additives ensure planters meet safety standards while maintaining durability and aesthetic appeal for outdoor use. Choosing the right fire-retardant solution depends on material compatibility, environmental impact, and regulatory requirements.
