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Epoxy resin binder used for repairing blade and preparation method thereof

An epoxy resin and adhesive technology, applied in the direction of in-line phenolic epoxy resin adhesive, epoxy resin glue, adhesive, etc. The effect of knot strength

Active Publication Date: 2013-01-09
镇江市电子化工材料工程研究中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above domestic epoxy resin adhesives and preparation methods do not meet the requirements of normal temperature and fast curing blade repair adhesives

Method used

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  • Epoxy resin binder used for repairing blade and preparation method thereof
  • Epoxy resin binder used for repairing blade and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The steps of this embodiment are as follows,

[0030] a. The following raw materials:

[0031] Bisphenol A epoxy resin 40g

[0032] Bisphenol F type epoxy resin 20g

[0033] Quartz powder 8g

[0034] Calcium carbonate 12g

[0035] Organic bentonite 3g

[0036] ST-560 defoamer 0.01g

[0037] Add in the reactor that thermometer and agitator are housed, heat up to 25 DEG C while stirring, react for 1.5 hours, obtain high viscosity and high thixotropy, the modified epoxy resin that viscosity is 8500mPa·s at room temperature (25 DEG C), That is component A;

[0038] b. Combine the following raw materials:

[0039] Polythiol 40g

[0040] Triethylamine 20g

[0041] Add it into a reactor equipped with a thermometer and a stirrer and stir, raise the temperature to 30°C, react for 2.5 hours, then add 10g of 2-methylimidazole, and keep it at 30°C for 1.5 hours to obtain a light yellow transparent liquid with a viscosity of 25°C 600mPa·s low-viscosity liquid modified amin...

Embodiment 2

[0045] The steps of this embodiment are as follows,

[0046] a. The following raw materials:

[0047] Bisphenol S type epoxy resin 70g

[0048] Fiber reinforcement 15g

[0049] Talc powder 15g

[0050] Hydrogenated Castor Oil 5g

[0051] ST-560 defoamer 0.05g

[0052]Add it into a reactor equipped with a thermometer and a stirrer, heat up to 30°C while stirring, and react for 2 hours to obtain a modified epoxy resin with high viscosity and high thixotropy, and a viscosity of 12000mPa·s at room temperature (25°C). That is component A;

[0053] b. Combine the following raw materials:

[0054] Polythiol 60g

[0055] Benzyldimethylamine 40g

[0056] Add it into a reactor equipped with a thermometer and a stirrer, stir, heat up to 30°C, and react for 1.5 hours, then add 15 g of 2-ethylimidazole, and react for 2 hours to obtain a light yellow transparent liquid with a viscosity of 500 mPa at 25°C. s low-viscosity liquid modified amines, which is component B;

[0057] c. Mi...

Embodiment 3

[0060] The steps of this embodiment are as follows,

[0061] a. The following raw materials:

[0062] Cycloaliphatic epoxy resin 80g

[0063] Silica powder 7g

[0064] Fumed silica 8g

[0065] SPA-102 defoamer 0.10g

[0066] Add it into a reactor equipped with a thermometer and a stirrer, heat up to 40°C while stirring, and react for 1.5 hours to obtain a modified epoxy resin with high viscosity and high thixotropy, and a viscosity of 12500mPa·s at room temperature (25°C). That is component A;

[0067] b. Combine the following raw materials:

[0068] Polythiol 70g

[0069] 2,4,6-tris(dimethylaminomethyl)phenol 13g

[0070] Add it into a reactor equipped with a thermometer and a stirrer, stir, raise the temperature to 40°C, and react for 2.5 hours, then add 20g of 2-methylimidazole-copper chloride salt, and react for 3 hours to obtain a light yellow transparent liquid. Low-viscosity liquid modified amines with a lower viscosity of 500mPa·s, which is component B;

[007...

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Abstract

The invention relates to a preparation method of repairing adhesive, in particular to a binder for repairing blade of a wind driven generator, belonging to the high polymer material field. The preparation method of double-component epoxy resin binder used for repairing blade is simple in operation and low in cost. The double-component epoxy resin binder for repairing blade which is made by the method of the invention has high tenacity, high shear strength, low heat and low shrink, thus being suitable for repairing and binding of large structural part; solidification is rapid, the binder can be rapidly solidified in 10-30 minutes at 5-25 DEG C and reach certain strength; and the binder is used for repairing defect of blade of wind driven generator.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to an adhesive for wind generator blade repair and a preparation method thereof, belonging to the technical field of polymer compounds. Background technique [0002] Epoxy resin adhesive is a liquid or solid adhesive composed of epoxy resin, curing agent, accelerator, modifier, diluent, filler, etc. Epoxy resin adhesives have high bonding strength and have been widely used in aerospace, aviation, automobile, machinery, construction, chemical industry, light industry, electronics, electrical appliances and daily life. With the rapid development of the wind power industry, epoxy resin, an important material for wind turbine blades, has also been rapidly improved. The repair of wind turbine blades requires the use of special epoxy resin adhesives with low viscosity, good permeability, high mechanical strength and good toughness of the cured product. At present, my count...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00C09J163/02C09J163/04C09J11/08C09J11/06
CPCC08G59/66C08G59/686C09J163/00
Inventor 苏文国林正辉
Owner 镇江市电子化工材料工程研究中心有限公司
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