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Embedded strip for epoxy resin-based fiber-reinforced high-modulus wind turbine blade, equipment and process

An epoxy resin, fiber reinforced technology, used in wind power generation, mechanical equipment, applications, etc., can solve the problem that the strength cannot meet the strength of large-sized blades, and achieve the effect of increasing mechanical strength, improving strength, and strong adsorption capacity.

Pending Publication Date: 2020-11-03
西安永兴科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the technical problem that the strength of unsaturated polyester resin products cannot meet the strength of large-sized blades, the purpose of the present invention is to provide a pre-embedded strip, equipment and process for epoxy resin-based fiber-reinforced high-modulus wind power blades, the wind power blades The pre-embedded strip is a high-modulus pre-embedded strip reinforced by epoxy resin-based fibers. The method of manufacturing the pre-embedded strip has the advantages of high modulus, certain toughness and anti-aging performance, and can meet the current production requirements for blades of units below 7MW.

Method used

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  • Embedded strip for epoxy resin-based fiber-reinforced high-modulus wind turbine blade, equipment and process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] The chemical composition ratio (weight ratio) of the embedded part is:

[0101] Fiberglass: 78%

[0102] Epoxy resin: 12.92%

[0103] Curing agent: 8.5%; methyltetrahydrophthalic anhydride;

[0104] Accelerator: 0.5%, imidazole;

[0105] Other additives: 0.08%, such as UV absorbers, antioxidants, light stabilizer additives.

[0106] The glass fiber adopts E glass fiber, and the glass fiber includes: untwisted roving glass fiber, expanded glass fiber and glass fiber cloth or cloth. In described glass fiber, use ratio is:

[0107] Expanded glass fiber accounts for 20% of the total fiber content;

[0108] Roving glass fiber accounts for 70% of the total fiber content.

[0109] Glass fiber cloth accounts for 10% of the total fiber content.

Embodiment 2

[0111] The chemical composition ratio (weight ratio) of the embedded part is:

[0112] Fiberglass: 74.3%

[0113] Epoxy: 15%

[0114] Curing agent: 10%, methyl nadic anhydride;

[0115] Accelerator: 0.6%, DMP30;

[0116] Other additives: 0.1%, such as UV absorbers, antioxidants.

[0117] The glass fiber adopts ECR glass fiber, and the glass fiber includes: untwisted roving glass fiber, expanded glass fiber and glass fiber cloth or cloth. The ratio used is:

[0118] Expanded glass fiber accounts for 20%-30% of the total fiber content;

[0119] The untwisted roving glass fiber accounts for 80%-70% of the total fiber content.

[0120] Glass fiber cloth accounts for 5-10% of the total fiber content.

Embodiment 3

[0122] The chemical composition ratio (weight ratio) of the embedded part is:

[0123] Fiberglass: 70%

[0124] Epoxy: 18%

[0125] Curing agent: 11.23%, methyltetrahydrophthalic anhydride;

[0126] Accelerator: 0.65%, DMP30;

[0127] Other additives: 0.12%, such as UV absorbers.

[0128] The glass fiber adopts E ECR glass fiber, and the glass fiber includes: untwisted roving glass fiber, expanded glass fiber and glass fiber cloth or cloth. The ratio used is:

[0129] Expanded glass fiber accounts for 20%-30% of the total fiber content;

[0130] The untwisted roving glass fiber accounts for 80%-70% of the total fiber content.

[0131] Glass fiber cloth accounts for 5-10% of the total fiber content.

[0132] The above are several groups of common formulations of the present invention, and other formulations can also be used to improve the performance of the material.

[0133] The epoxy resin-based fiber-reinforced high-modulus pre-embedded strip for wind power blades pr...

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Abstract

The invention discloses an embedded strip for an epoxy resin-based fiber-reinforced high-modulus wind turbine blade, equipment and a process. The embedded strip comprises a composite material body andcomposite surface felts which are arranged on the upper surface and the lower surface of the composite material body; the composite material body is a glass fiber reinforced epoxy resin composite material; and glass fibers comprise twistless roving glass fibers, bulked yarn glass fibers and glass fiber cloth, the twistless roving glass fibers and the bulked yarn glass fibers are uniformly arranged in the composite material body in multiple layers in the length direction to form a multi-layer structure, and at least one layer of glass fiber cloth is arranged in the multi-layer structure in thelength direction. The embedded strip is a high-modulus embedded strip reinforced by epoxy resin-based fibers, and the embedded strip manufactured by the method has the advantages of high modulus, certain toughness and ageing resistance, and can meet the production requirements of blades of units with the power of less than 7MW at present.

Description

technical field [0001] The invention belongs to the field of wind power generation, and specifically relates to an epoxy-based fiber-reinforced high-modulus and high-toughness pre-embedded strip for wind power blades, equipment and a process. Background technique [0002] A wind turbine is a power generation device composed of blades, transmission systems, generators, power storage equipment, towers and electrical systems. To obtain large wind power generation power, the key is to have blades that can rotate briskly, so wind power generation Blade technology is the core technology of wind turbines. [0003] Since the blades directly face the wind to obtain wind energy, the blades are required to have a reasonable structure, high-quality materials and advanced technology to enable the blades to reliably bear the wind force, the self-weight of the blades, centrifugal force, etc. to give the blades various bending distance pulls, high structural strength, and fatigue resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/52B29C70/54C08L63/00C08K13/04C08K7/14C08J5/04F03D1/06B29L31/08
CPCB29C70/521B29C70/525B29C70/545B29L2031/085C08J5/043C08J2363/00C08K7/14C08K13/04F03D1/0675C08L63/00Y02E10/72Y02P70/50
Inventor 吴亚民张海潮魏新利
Owner 西安永兴科技发展有限公司
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