Blade forming method and blade

Abstract

The invention relates to a blade forming method and a blade. The forming method comprises the steps that a layering material is laid on a mold, and the mold is communicated with vacuumizing equipment; laying a vacuum infusion system on the laying material, wherein the vacuum infusion system comprises a glue inlet pipe provided with a second control valve; vacuumizing the mold and maintaining the pressure; opening a second control valve, and injecting the dicyclopentadiene resin system into the vacuum infusion system; the mold is heated to the first temperature, the heating duration is the first duration, the dicyclopentadiene resin system poured into the mold is subjected to curing treatment, the value range of the first temperature ranges from 70 DEG C to 90 DEG C, and the value range of the first duration ranges from 2 hours to 4 hours. According to the method, the shell, the web or the beam cap of the blade is formed by pouring the dicyclopentadiene resin system with relatively low viscosity at room temperature, and post-curing is not needed after pouring forming, so that the pouring time and the curing time of the blade can be shortened, the production efficiency of the blade can be improved, and the material cost of the blade can be reduced.

Description

technical field [0001] The present invention relates to the technical field of wind power generation, in particular to a method for forming a blade and a blade. Background technique [0002] At present, the shell of the wind turbine blade is mainly made of two-component epoxy resin system infused with glass fiber fabric and cured by vacuum pressure. Epoxy resin is a polymer containing more than two epoxy groups on the molecule, which is commonly formed by condensation polymerization of bisphenol A, epichlorohydrin, polyol, etc. Epoxy resin systems for blade infusion include bulk epoxy resins and amine curing agents. Since the viscosity of epoxy resin at room temperature is about 200CPS-300CPS, the perfusion time of large thickness parts is longer, generally 1.5 hours to 2 hours, or even longer. The post-curing cycle of the epoxy resin system is 6 hours to 7 hours at 70°C, and the time required to infuse and cure a blade with epoxy resin is generally 24 hours to 48 hours, w...

AI Technical Summary

Problems solved by technology

Since the viscosity of the epoxy resin at room temperature is about 200CPS-300CPS, the perfusion time of the large thickness part is longer, generally takes 1.5 hours to 2 hours, or even longer

The post-curing period of the epoxy resin system is 6 hours to 7 hours at 70°C, and the time it takes to pour and cure a blade with epoxy resin generally takes up to 24 hours to 48 hours, which seriously restricts the production efficiency of the blade

[0003] In addition, in recent years, with the continuous price increase of epichlorohydrin, the raw material of matrix epoxy resin, the cost of epoxy resin system for blade perfusion has increased significantly

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