What additives are used in composite materials to prevent mold growth on outdoor bar stools?

To prevent mold growth on outdoor bar stools made from composite materials, manufacturers often incorporate specific additives into the material blend. These additives include:

1. Anti-fungal Agents: Chemicals like zinc borate or silver nanoparticles are added to inhibit mold and fungal growth.

2. Biocides: These are antimicrobial additives that prevent the growth of microorganisms, including mold.

3. UV Stabilizers: While primarily for sun protection, some UV stabilizers also help reduce moisture retention, indirectly preventing mold.

4. Water Repellents: Silicone-based additives can reduce water absorption, minimizing the damp conditions mold thrives in.

5. Preservatives: Organic compounds like isothiazolinones are used to protect composite materials from biological degradation.

By integrating these additives, composite outdoor bar stools remain mold-resistant, durable, and low-maintenance, even in humid or wet environments.