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Resin for wind turbine blades and corresponding preparation method thereof

A resin and wind power technology, which is applied in the preparation of wind power resins and the field of wind power resins, can solve problems such as low transverse strength, poor product fatigue performance, and affect product use, so as to reduce the difficulty of infiltration, improve bonding strength, and improve curing speed effect

Pending Publication Date: 2022-02-18
江苏德晴新材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, there is currently a lack of fiber materials that match photocurable resins on the market, and the use of fiber materials in other resin systems will lead to product defects at the interface between fibers and resins. For example, the use of glass fibers in unsaturated resin systems will lead to poor fatigue performance of products. The use of glass fibers in epoxy resin systems will result in lower transverse strength and affect product use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0066] The preparation method of photocurable resin for wind power, the specific steps are as follows:

[0067] a Take the epoxy acrylate and modified epoxy acrylate corresponding to the mass percentage and put them in an oven, heat to 70-80°C, and use it to heat the raw materials to reduce the viscosity;

[0068] b. Add component A and component B corresponding to the mass percentage into the stirring tank in sequence, the temperature of the reaction tank is raised to 70-75°C, and the diluted monomer is kept at a constant temperature for 10-15 minutes;

[0069] c Add the heated epoxy acrylate and modified epoxy acrylate into the reaction kettle in turn, and start the stirring blade, and the speed of the blade is controlled at 60-70 rpm;

[0070] d After the above four components are fully mixed, add the photoinitiator 819 and component C into the reaction kettle according to the corresponding mass percentage, and stir for 60-70 minutes under constant temperature conditions; ...

specific Embodiment 1

[0075] Specific embodiment one, the formula of raw material mass percentage is as follows:

[0076] 42% epoxy acrylate, 5% modified epoxy acrylate, 10% epoxy resin, 10% epoxy curing agent, 20% tricyclodecane dimethanol diacrylate, 11% tripropylene glycol diacrylate, 0.2 % photoinitiator 819, 0.8% photoinitiator 651, 1% photoinitiator 1173.

[0077] Configure the corresponding number of raw materials according to the mass backup ratio, and the preparation method is as follows:

[0078] a Take 42 parts of epoxy acrylate and 5 parts of modified epoxy acrylate and heat them in an oven to 70-80°C for heating raw materials to reduce viscosity;

[0079] b. Add 20 parts of tricyclodecane dimethanol diacrylate and 11 parts of tripropylene glycol diacrylate into the stirring tank in sequence, the temperature of the reaction tank is raised to 70-75°C, and the diluted monomer is kept at a constant temperature for 10-15 minutes;

[0080] c Add the heated epoxy acrylate and modified epoxy...

specific Embodiment 2

[0088] Specific embodiment two, the formula of raw material mass percentage is as follows:

[0089] 42% epoxy acrylate, 5% modified epoxy acrylate, 10% epoxy resin, 10% epoxy curing agent, 25% isobornyl acrylate, 6% tripropylene glycol diacrylate, 0.2% photoinitiator 819 , 0.8% photoinitiator 651, 1% photoinitiator 1173.

[0090] Its performance is as follows:

[0091] Viscosity at 25°C is 1300-1400cps; tensile strength ≥ 55MPa; combined with epoxy system glass fiber resin, transverse tensile strength ≥ 55MPa; Tg ≥ 90°C (DMA test); fatigue performance R = -1 (wind power pull-compression fatigue test ) S-N curve, m≥12.

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Abstract

The invention provides resin for wind turbine blades, which is suitable for rapid curing of glass fiber pultruded plates, can effectively improve the bonding strength after the resin is combined with glass fibers, improves the fatigue performance after the resin is combined with the glass fibers, improves the production efficiency of manufacturing blades by using the glass fiber pultruded plates, and effectively reduces the cost. The resin for wind turbine blades is characterized by comprising the following components: epoxy acrylate; modified epoxy acrylate; an epoxy resin; an epoxy curing agent; a component A which is specifically at least one of isobornyl acrylate or tricyclodecane dimethanol diacrylate; a component B which is specifically at least one of tripropylene glycol diacrylate or oxybis(methyl-2,1-ethanediyl)diacrylate; a photoinitiator 819; and a component C which is specifically at least one of a photoinitiator 651 or a photoinitiator 1173. The invention also provides a preparation method of the resin for wind turbine blades.

Description

technical field [0001] The invention relates to the technical field of wind power blade manufacturing materials, specifically a resin for wind power, and also provides a preparation method for the resin for wind power. Background technique [0002] The main resin system used in wind power generation is epoxy resin. In order to meet the design requirements of large-size blades, existing wind power blade manufacturers use carbon fiber and glass fiber pultrusion sheets instead of traditional glass fiber unidirectional fabrics. The pultrusion sheets are excellent. Its performance has been generally recognized by wind turbine blade manufacturers. At present, epoxy resin is mostly used in the production of pultruded sheets, but its production speed is much lower than that of unsaturated polyester. However, the styrene contained in unsaturated polyester will cause serious pollution to the environment. [0003] The existing light-curable resins on the market do not currently have c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/10C08F220/18C08F222/14C08F222/20
CPCC08F283/105C08F283/10C08F220/1811C08F222/102
Inventor 史兵振姚建华魏明王文张保平何枫
Owner 江苏德晴新材股份有限公司
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