What additives are used to improve UV resistance in polyethylene outdoor armchairs?

Polyethylene outdoor armchairs are popular for their durability and affordability, but prolonged exposure to UV radiation can cause degradation. To combat this, manufacturers incorporate specific additives to enhance UV resistance. Common additives include:

1. UV Stabilizers: These absorb or reflect UV rays, preventing polymer breakdown. Examples include benzophenones and benzotriazoles.

2. Hindered Amine Light Stabilizers (HALS): HALS neutralize free radicals formed by UV exposure, slowing degradation.

3. Carbon Black: A cost-effective additive that absorbs UV radiation and provides additional strength.

4. Pigments and Colorants: Certain pigments, like titanium dioxide, scatter UV rays, reducing damage.

By using these additives, polyethylene armchairs maintain their structural integrity and appearance even under harsh sunlight, making them ideal for outdoor use.