Wind turbine

Wind turbine blades are the largest composite parts made by humans, sometimes reaching up to 100 meters in length. These blades are made from a combination of epoxy or vinyl ester resin with fiberglass and carbon fibers, using vacuum infusion or prepreg methods. Epoxy resin is the primary material of choice due to its excellent adhesive strength to fibers, high fatigue resistance, and dimensional stability under various weather conditions.

The most important challenge for wind turbine blades is withstanding millions of flexural cycles over a 20-year lifespan. Epoxy resin, with its appropriate modulus of elasticity and high toughness, prevents the formation of micro-cracks. Additionally, a UV and rain-resistant gelcoat protects the blade surface from erosion. Alborz Organic Materials Company supplies wind turbine epoxy resin with low viscosity (for easy injection) and long gel time for large blades.