What materials are used in the WPC guardrail? What is the ratio of wood to plastic?

Wood-Plastic Composite (WPC) guardrails are made from a combination of wood fibers or wood flour and plastic polymers. Here are the typical materials used and the general ratio of wood to plastic:

Materials Used in WPC Guardrails:
Wood Fibers or Wood Flour:

Sourced from hardwood or softwood, wood fibers or wood flour are finely ground particles of wood.
They provide the natural appearance and texture associated with wood.
Plastic Polymers:

Commonly used plastics include polyethylene (PE), polypropylene (PP), or polyvinyl chloride (PVC).
Recycled plastics are often used, contributing to the eco-friendliness of WPC products.
Additives:

Colorants: Added to achieve various colors and finishes.
UV Stabilizers: Protect the material from UV radiation and prevent fading.
Coupling Agents: Enhance the bond between wood fibers and plastic.
Lubricants: Improve the manufacturing process and surface finish.
Anti-oxidants: Prevent the material from degrading due to oxidation.
Ratio of Wood to Plastic:
The typical ratio of wood to plastic in WPC products varies but commonly falls within the range of:
Wood Fibers: 50% to 70%
Plastic Polymers: 30% to 50%
This ratio can vary depending on the manufacturer, the specific application of the WPC product, and the desired properties of the final product. For example:

Higher Wood Content: Provides a more natural wood-like appearance and texture but may reduce the product's resistance to moisture and insects.
Higher Plastic Content: Increases the durability, moisture resistance, and longevity of the product but may result in a less natural appearance.
Example Formulation:
60% Wood Fibers
30% Plastic (PE, PP, or PVC)
10% Additives (colorants, UV stabilizers, coupling agents, etc.)
Benefits of the Composite:
Durability: Resistant to rot, mold, and insect damage.
Low Maintenance: Requires less upkeep compared to traditional wood.
Eco-Friendly: Often made with recycled materials, reducing waste.
By combining the strengths of wood and plastic, WPC guardrails offer a versatile and durable alternative to traditional materials, suitable for various outdoor and indoor applications.