Manhole plate and manhole cover plate of wind power blade as well as preparation method and application of manhole plate and manhole cover plate

Through molding and molding technology and the utilization of waste glass fibers, the problem of high cost and low efficiency of manhole plates and manhole cover plates of wind power blades is solved, and an efficient and low-cost preparation process is achieved, and the strength and durability of the product are improved.

CN119751772AActive Publication Date: 2025-04-04GUODIAN UNITED POWER TECH
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Patent Information

Application Number
CN202411816048.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2025-04-04
Estimated Expiration
2044-12-11

AI Technical Summary

Technical Problem

The preparation cost of existing wind power blade manhole plates and manhole cover plates is relatively high, and the preparation efficiency is low, which affects the preparation efficiency of wind power blade units.

Method used

The manhole plate and manhole cover plate of wind power blades are prepared by molding and molding, and materials such as unsaturated polyester resin, glass fiber and inorganic fillers are used, and used waste glass fibers are prepared to reduce costs and improve efficiency.

Benefits of technology

Through molding and forming technology, the preparation cost of wind power blade manhole plates and manhole cover plates is reduced, the preparation efficiency is improved, and automated production is achieved. The product has excellent strength performance and durability.

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Abstract

The invention relates to the field of wind power blades, and discloses a manhole plate and a manhole cover plate of a wind power blade as well as a preparation method and application of the manhole plate and the manhole cover plate. The method comprises the following steps: (1) mixing unsaturated polyester resin, a thickening agent, an initiator, a cross-linking agent, a low shrinkage agent, a release agent, a polymerization inhibitor, an inorganic filler and waste glass fibers, then filling a mold with the mixture, and preheating; (2) carrying out mold pressing on the preheated material to obtain a preformed material; and (3) the preformed material is subjected to heat treatment, then demolding is conducted, and the manhole plate and the manhole cover plate of the wind power blade are obtained. According to the method, a compression molding method is creatively adopted for preparation, and the waste glass fiber is adopted as a raw material for preparation, so that the preparation cost is saved, and meanwhile, the preparation efficiency is also improved.
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