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Composite material for wind power generator blade and preparation method thereof

A technology for wind turbines and composite materials, applied in the field of fiber-reinforced thermoplastic resin composite materials, can solve the problems of affecting blade strength and low bonding strength, and achieve the effect of ensuring mechanical properties and non-toxic and harmless production environment.

Active Publication Date: 2010-12-08
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the formation process of composite materials relies on the melting of polypropylene fibers in the mold and the combination of glass fibers, which has the problem of low bonding strength, which ultimately affects the strength of the blade.

Method used

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  • Composite material for wind power generator blade and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 70 kg of maleic anhydride grafted polypropylene powder, 0.3 kg of UV absorber, and 0.5 kg of antioxidant were mixed evenly and placed in a high-voltage electrostatic fluidized bed. 40 kg of glass fibers are passed continuously through the fluidized bed. Adjust the electrostatic voltage of the fluidized bed to adjust the amount of glass fiber adsorption resin, so that the weight fraction of maleic anhydride grafted polypropylene is kept at 60, and the glass fiber adsorbed with resin is continuously fed from the oven and a belt with a diameter of 2.5-5.5 The high-temperature die head with a mm circular hole passes through, and after cooling, the continuous strip-shaped composite material is cut into 12.5-25mm long pellets with a pelletizer, and then molded at 230°C to form a test standard sample.

Embodiment 2

[0034] Mix 70 kg of nylon 66 powder, 0.3 kg of ultraviolet absorber, and 0.5 kg of antioxidant, and place them in a high-voltage electrostatic fluidized bed. 45 kg of glass fibers were passed continuously through the fluidized bed. Adjust the electrostatic voltage of the fluidized bed to adjust the amount of glass fiber adsorption resin, so that the weight fraction of nylon 66 is kept at 55. The glass fiber adsorbed with resin passes continuously through the oven and a high-temperature die head with a circular hole with a diameter of 2.5-5.5mm, and then after cooling, the continuous strip-shaped composite material is cut into 12.5-25mm long granular particles with a pelletizer , and then molded into test standard specimens at 270°C.

Embodiment 3

[0036] 70 kg of polypropylene copolymer powder, 0.3 kg of UV absorber, and 0.5 kg of antioxidant were mixed evenly and placed in a high-voltage electrostatic fluidized bed. 40 kg of glass fibers are passed continuously through the fluidized bed. Adjust the electrostatic voltage of the fluidized bed to adjust the amount of glass fiber adsorption resin, so that the weight fraction of polypropylene copolymer is kept at 60. The glass fiber adsorbed with resin passes continuously through the oven and a high-temperature die head with a circular hole with a diameter of 2.5-5.5mm, and then after cooling, the continuous strip-shaped composite material is cut into 12.5-25mm long granular particles with a pelletizer . Then it was molded at 230°C into a test standard bar.

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Abstract

The invention relates to a composite material for a wind power generator blade. The composite material comprises the following components in parts by weight: 40-75 parts of thermoplastic resin component, 25-60 parts of reinforced fiber component and 0-5 parts of additive. Compared with the prior art, the invention has the advantages of meeting high strength, high modulus, ageing resistance, and the like required by a wind power generator blade.

Description

technical field [0001] The present invention relates to a fiber-reinforced thermoplastic resin composite material, in particular to a fiber-reinforced thermoplastic resin composite material formed by impregnating reinforced fiber bundles or reinforced fiber cloth or reinforced fiber felt with thermoplastic resin, especially to the production of wind-driven generators The material of the blade. Background technique [0002] Blades are the most basic and critical components of wind turbines. Harsh environment and long-term non-stop operation require blades to have light specific gravity, excellent properties such as fatigue resistance, corrosion resistance, ultraviolet radiation resistance and lightning strike resistance, and require low installation and maintenance costs. Therefore, to be able to produce high-quality blades requires superior performance and suitable raw materials as a guarantee. Fiber-reinforced composite materials are the preferred materials for the produc...

Claims

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Application Information

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IPC IPC(8): C08L101/00C08K13/04C08J5/04C08L51/06C08L77/00C08L23/14C08L23/06C08L69/00C08L67/02C08L71/12C08L59/00C08K7/02F03D1/06F03D3/06
CPCY02E10/74Y02E10/721Y02E10/72Y02P70/50
Inventor 张怀忠杨桂生
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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