What are the flame retardant additives in resin-based outdoor bins?
Resin-based outdoor bins require flame retardant additives to meet fire safety standards and prevent combustion. Common additives include aluminum hydroxide, which releases water vapor to cool surfaces; brominated compounds that interrupt free radical reactions; and phosphorus-based systems that form protective char layers. These additives work by either physically cooling the material or chemically interfering with the combustion process. Manufacturers select specific retardants based on resin type (e.g., polyethylene or polypropylene) and environmental durability needs. Proper integration ensures bins resist ignition while maintaining structural integrity in outdoor settings. Regulatory guidelines like UL 94 govern their implementation for public safety.
