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Vacuum flow guide epoxy resin composition for wind turbine blade

An epoxy resin and vacuum diversion technology, applied in the field of wind turbine blades, can solve the problems of affecting blade life, increasing product volume shrinkage, and worsening resin mechanical properties, ensuring product quality and reducing the amount of diluent. , the effect of improving processing performance

Inactive Publication Date: 2014-11-19
WELLS ADVANCED MATERIALS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the viscosity of bisphenol A epoxy resin 128 is greater than 10000cps, (25°C, the same for the whole text), in order to improve its processing performance, it is necessary to add a large amount of diluent, which will lead to an increase in the volume shrinkage of the cured product, while diluting The larger the additive amount, the worse the mechanical properties of the cured resin and the lower the glass transition temperature Tg, which will also affect the life of the blade

Method used

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  • Vacuum flow guide epoxy resin composition for wind turbine blade
  • Vacuum flow guide epoxy resin composition for wind turbine blade
  • Vacuum flow guide epoxy resin composition for wind turbine blade

Examples

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preparation example Construction

[0049] The preparation method of the vacuum infusion epoxy resin composition for a kind of wind power blade, it comprises each component of described ratio and the following steps:

[0050] Step 1, prepare component A

[0051] a. Preheat bisphenol A epoxy resin 128 and epoxy diluent BDGE to 60°C-65°C;

[0052] b, add bisphenol A type epoxy resin 128 and part of epoxy diluent BDGE preheated in step 1 to the reactor;

[0053] c, adding bisphenol F type epoxy resin 170 and low viscosity bisphenol A epoxy resin 332 to the reactor in sequence;

[0054] d, start the stirrer, and stop after stirring at a speed of 24-28rpm for 30-40min;

[0055] e, add the remaining epoxy diluent BDGE,

[0056] 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;

[0057] g, stop vacuuming, and return to normal pressure in the reactor to obtain the first component;

[0058] Step...

Embodiment 1

[0063] Example 1 (curing system 5708B)

[0064] Preparation of Component A

[0065] a. Preheat bisphenol A epoxy resin 128 and epoxy diluent BDGE to 60°C-65°C;

[0066] b, add bisphenol A type epoxy resin 128 and part of epoxy diluent BDGE preheated in step 1 to the reactor;

[0067]c, adding bisphenol F type epoxy resin 170 and low viscosity bisphenol A epoxy resin 332 to the reactor in sequence;

[0068] d, start the stirrer, and stop after stirring at a speed of 24-28rpm for 30-40min;

[0069] e, add the remaining epoxy diluent BDGE,

[0070] 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;

[0071] g, stop vacuuming, and return to normal pressure in the reactor to obtain the first component;

[0072] Step 2, preparing component B;

[0073] h, each auxiliary agent is accurately weighed, and is added in another reactor;

[0074] I, stirring, hig...

Embodiment 2

[0078] Example 2 Curing system 5708B1

[0079] a. Preheat bisphenol A epoxy resin 128 and epoxy diluent BDGE to 60°C-65°C;

[0080] b, add bisphenol A type epoxy resin 128 and part of epoxy diluent BDGE preheated in step 1 to the reactor;

[0081] c, adding bisphenol F type epoxy resin 170 and low viscosity bisphenol A epoxy resin 332 to the reactor in sequence;

[0082] d, start the stirrer, and stop after stirring at a speed of 24-28rpm for 30-40min;

[0083] e, add the remaining epoxy diluent BDGE,

[0084] 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;

[0085] g, stop vacuuming, and return to normal pressure in the reactor to obtain the first component;

[0086] Step 2, preparing component B;

[0087] h, each auxiliary agent is accurately weighed, and is added in another reactor;

[0088] I, stirring, high speed 28 rpm, low speed 24rmp, con...

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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 vacuum flow guide epoxy resin composition for the wind turbine blade comprises a component A and a component B, wherein the component A comprises 45-65wt% of bisphenol-A epoxy resin 128, 5-15wt% of bisphenol-F epoxy resin 170, 15-25wt% of low-viscosity bisphenol-A epoxy resin 332 and 10-20wt% of epoxy diluent BDGE; the component B comprises 50-70wt% of polyether amine curing agent D230 and 30-50wt% of isophorone diamine (IPDA). The composition is obtained after mixing the component A with the component B according to a proportion of parts by weight, namely 100 to (29-31). The composition has the effects of reducing the viscosity of epoxy resin and improving the processability of epoxy resin on the premise of ensuring various physical and chemical properties of cured resin, especially the mechanical properties.

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. Among them, bisphenol A type epoxy resin (such as epoxy resin 128) is diluted with BGDE diluent, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08G59/50C08G59/20
Inventor 林燕建
Owner WELLS ADVANCED MATERIALS SHANGHAI
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