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Hand lay-up epoxy resin composition for wind power blades

An epoxy resin and wind power blade technology, applied in the field of wind turbine blades, can solve the problems of slow resin curing speed and affecting blade production efficiency, and achieve the effects of improving production efficiency, improving low-temperature curing performance, and low energy consumption

Active Publication Date: 2017-03-29
WELLS ADVANCED MATERIALS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the manufacturing process of large-scale blades, after the upper and lower blades are molded, the joints need to be repaired by hand lay-up. In order to ensure the overall quality of the blades, the usual hand-laid resin is consistent with the material of the upper and lower blades, but this kind of manufacturing of the upper and lower blades The curing speed of the resin is slow, which will affect the production efficiency of the entire blade

Method used

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  • Hand lay-up epoxy resin composition for wind power blades
  • Hand lay-up epoxy resin composition for wind power blades
  • Hand lay-up epoxy resin composition for wind power blades

Examples

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preparation example Construction

[0043] Described a kind of preparation method of hand lay-up epoxy resin composition for wind power blades, it comprises each component of described proportion and following steps:

[0044] Step 1, prepare the resin component

[0045] a. Preheat bisphenol A epoxy resin 128 and epoxy diluent BDGE to 60°C-65°C;

[0046] b, add bisphenol A type epoxy resin 128 and part of epoxy diluent BDGE preheated in step 1 to the reactor;

[0047] c, adding bisphenol F type epoxy resin 170 to the reactor;

[0048] d, start the stirrer, and stop after stirring at a speed of 24-28rpm for 30-40min;

[0049] e, add the remaining epoxy diluent BDGE,

[0050] f. In a vacuum environment, start the stirring program, control the high speed 28 rpm, low speed 24 rpm, keep stirring for 60-90 minutes, and turn off the stirring program;

[0051] g, stop vacuuming, and return to normal pressure in the reactor to obtain the first component;

[0052] Step 2, preparing component B;

[0053] h, accurately...

Embodiment 1

[0058] Example 1 The curing agent 5089B-4k is used, that is, the amount of the tertiary amine accelerator K54 is 10%

[0059] Resin component: bisphenol A type epoxy resin 128 90%

[0060] Bisphenol F type epoxy resin 170 5%

[0061] Epoxy Thinner BDGE 5%; and

[0062] Curing agent component: Polyetheramine curing agent D230 50%

[0063] Polyamide 1250 20%

[0064] Phenalkamine curing agent T31 20%

[0065] And the 10% tertiary amine accelerator K54 of the above three components; (the same below, unless otherwise specified)

Embodiment 2

[0066] Example 2 The curing agent 5089B-4 is used, that is, the amount of the tertiary amine accelerator K54 is 8%

[0067] Resin component: bisphenol A type epoxy resin 128 80%

[0068] Bisphenol F epoxy resin 170 10%

[0069] Epoxy Thinner BDGE 5%; and

[0070] Curing agent component: Polyetheramine curing agent D230 30%

[0071] Polyamide 1250 35%

[0072] Phenalkamine curing agent T31 27%

[0073] Tertiary amine accelerator K54 8%;

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Abstract

The invention relates to a wind turbine blade and in particular relates to an epoxy resin composition for the wind turbine blade. The hand lay-up epoxy resin composition for the wind turbine blade comprises a resin component and a curing agent component, wherein the resin component comprises 70-90% of bisphenol-A epoxy resin 128, 5-15% of bisphenol-F epoxy resin 170 and 5-15% of epoxy diluent BDGE; the curing agent component comprises 30-50% of polyether amine curing agent D230, 20-40% of polyamide 1250, 20-30% of phenolic aldehyde amine curing agent T31 and 2-10% of tertiary amine accelerator K54. The composition is obtained after mixing the resin component with the curing agent component according to a proportion of 100 to 30. The hand lay-up epoxy resin is high in curing speed and is beneficial to improving the production efficiency of the blade.

Description

technical field [0001] The invention relates to wind power generator blades, in particular to an epoxy resin composition for wind power blades. Background technique [0002] Wind power, as a relatively clean energy, has been widely developed in my country and even in the world. The blades of wind turbines are huge, and they were all made of metal in the past. However, because wind power systems need to work in harsh weather such as wind and rain, metal materials are prone to rust and other conditions, which will affect the work of the entire wind power system. Replacement of blades will Lead to high equipment maintenance costs. [0003] In order to solve the above problems, people turn their attention to polymer materials. As a high-strength engineering material, epoxy resin has excellent weather resistance, so it is chosen by people to make blades of wind power systems. In the manufacturing process of large-scale blades, after the upper and lower blades are molded, the j...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/20C08G59/62C08G59/60C08L63/00
Inventor 林燕建
Owner WELLS ADVANCED MATERIALS SHANGHAI
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