The important role of release agent in the production process of wind turbine blades

Wind turbine blades can be seen everywhere in mountains and seas, and a wind turbine unit consists of blades, nacelle, tower Composed of leaves that rotate regularly in the air, it is quite eye-catching. Although wind turbine blades are large, they are also very fragile, so great caution is required during the production process, especially in the demolding stage. If the demolding agent for wind turbine blades is not selected properly, it is likely to result in the entire blade being scrapped, directly causing significant losses to production.

After demolding, wind turbine blades need to be cleaned with cutting tools to remove residual vacuum film and glue on the mold, or wiped with adhesive felt to remove dust on the mold. After wiping clean, the mold can be cleaned with a mold cleaner. After cleaning the mold, apply a layer of wind turbine blade specific release agent and wait for it to solidify before laying the layer. The function of release agent is to form a dense layer on the surface of the mold, making it easier for the mold to separate from the blades and achieve the effect of demolding.

Wind turbine blades are composed of main beams, flanging angles, bonding angles, blade roots, skin, and other components, among which flanging, bonding angles, blade roots, main beams, etc. require specialized molds for production. After each component is made, it is glued and assembled together on the main mold. After the mold is closed, it is pressed and cured to complete the production of a whole blade.

In addition, the main beam needs to be formed on a separate mold. When laying the main beam, it needs to be accurately positioned and must be polished and surface cleaned. After being transported from the cutting workshop to the skin workshop, the main beam still needs to be manually demolded, and the residual attachments after demolding need to be peeled off. Finally, the surface needs to be wiped with a cloth.

The PVC foam of the web has a high shear modulus, and the structure has good stiffness characteristics, mainly to increase the stiffness of the section. The upper and lower layers of fiber cloth are sandwiched with foam board in the middle. When laying, it is necessary to ensure the tightness of each PVC board.