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Preparation method of corrosion-resistant structural adhesive for wind turbine blade

A wind power blade and corrosion-resistant technology, which is applied in the field of preparation of corrosion-resistant structural adhesives for wind power blades, can solve the problems of structural adhesive layer thickness changes, bonding performance effects, and affecting the gap between the skin and the web

Inactive Publication Date: 2020-10-30
安徽国成顺风风力发电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of mixing structural adhesives, due to the characteristics of epoxy resin itself, it is very critical to strictly control the mixing ratio, but in actual production, the mixing ratio may deviate; The mixed structural adhesive is actually in the process of continuous curing; the positioning and mold closing process will affect the gap between the skin and the web, resulting in changes in the thickness of the adhesive layer of the structural adhesive; curing after mold closing may occur Insufficient
Processing parameters such as mixing ratio, airing time after mixing, thickness of the adhesive layer and degree of curing all have an impact on the final bonding performance. E51 epoxy resin and bisphenol F epoxy resin are used, but the prepared adhesive cannot meet the technical requirements of high strength, corrosion resistance, and good heat resistance, and cannot avoid the above-mentioned accompanying defects.

Method used

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  • Preparation method of corrosion-resistant structural adhesive for wind turbine blade
  • Preparation method of corrosion-resistant structural adhesive for wind turbine blade

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Experimental program
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Effect test

Embodiment 1

[0027] Furfuryl alcohol resin was purchased from Zhengzhou Hengtong Chemical Co., Ltd., chlorinated polyethylene was purchased from Linyi Anfeng Chemical Co., Ltd. CPE-135A, Qinghe County Chuangying Metal Material Co., Ltd. flake graphite DK202, Haicheng Ruitong Mining Co., Ltd. chlorite powder , nepheline powder Unimin minex10, and barite powder were purchased from Qingdao Kailisen.

[0028] The first step, the preparation of bisphenol A benzoxazine resin: in parts by weight, add 119 parts of paraformaldehyde, 96 parts of aniline and 231 parts of bis For phenol A, add 232 parts of absolute ethanol as a solvent, continue the reaction at 80°C for 24h to end the reaction, remove the solvent in the reaction product by rotary evaporation to remove absolute ethanol, dry the product after rotary evaporation at 60°C for 4h in vacuum, and then use methanol The product after vacuum drying is washed 3 times, and then vacuum-dried at 75°C for 2 hours to obtain bisphenol A benzoxazine res...

Embodiment 2

[0031] Furfuryl alcohol resin was purchased from YJ-2 furfuryl alcohol resin of Shandong Mobei Chemical Co., Ltd., chlorinated polyethylene was purchased from CPE-135A of Linyi Aoxing Chemical Co., Ltd., flake graphite DK202 of Qinghe County Chuangying Metal Material Co., Ltd., Haicheng Ruitong Mining Co., Ltd. purchased chlorite powder, nepheline powder Unimin minex10, and barite powder from Qingdao Kailisen.

[0032] The first step, the preparation of bisphenol A benzoxazine resin: in parts by weight, add 113 parts of paraformaldehyde, 89 parts of aniline and 215 parts of bis For phenol A, add 215 parts of absolute ethanol as a solvent, continue the reaction at 75°C for 22h to end the reaction, remove the absolute ethanol by rotary evaporation of the solvent in the reaction product, dry the product after rotary evaporation at 50°C for 2h in vacuum, then wash with methanol The product after vacuum drying is washed 3 times, and then vacuum-dried at 70°C for 1 hour to obtain bi...

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Abstract

The invention discloses a preparation method of a corrosion-resistant structural adhesive for a wind turbine blade, and belongs to the technical field of wind turbine structural adhesives. The corrosion-resistant structural adhesive has the characteristics of good heat resistance and corrosion resistance, excellent toughness and thermal stability, low curing heat release and ultralow shrinkage. The corrosion-resistant structural adhesive can be used for bonding wind turbine blade base materials, can be widely applied to fan blades, and is small in thermal shrinkage, approximate to zero shrinkage, low in water absorption and porosity, high in heat-resistant grade and suitable for being used as the corrosion-resistant structural adhesive for the wind turbine blades after being cured.

Description

technical field [0001] The invention belongs to the technical field of wind power structural adhesives, and in particular relates to a preparation method of corrosion-resistant structural adhesives for wind power blades. Background technique [0002] In recent years, wind power has developed rapidly all over the world, especially in China due to policy guidance. With the large-scale development of the wind power industry, the reliability of wind turbines has been continuously concerned. As the "engine" of wind turbines, wind turbine blades determine the quality and reliability of wind turbines to a large extent, so their material selection, design and manufacture are very critical. The blade manufacturing technologies currently mastered by domestic blade factories all adopt the manufacturing method of clamping the blade skin and web together to form the main load-bearing structure. Since the structural adhesive directly participates in the construction of the main load-bea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J179/00C09J123/28C09J135/00C09J161/00C09J11/04C08G73/00C08F283/00C08F220/32C08F226/06
CPCC08F283/00C08G73/00C08K2003/3045C08L2205/035C09J11/04C09J179/00C08L23/286C08L35/00C08L61/00C08K13/04C08K3/30C08K7/00C08K3/04C08K3/34C08F220/325C08F226/06
Inventor 唐子成
Owner 安徽国成顺风风力发电有限公司
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