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Epoxy resin composition, preparation method of epoxy resin composition and composite material for wind power blade

An epoxy resin and composite material technology, applied in the field of wind power blade materials, can solve the problems of few active functional groups, long operating time, and short operating time.

Inactive Publication Date: 2015-05-13
广东博汇新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when using vacuum infusion molding technology to prepare carbon fiber composites, there are several problems: First, due to the smooth surface of carbon fibers, less active functional groups, low surface energy, and surface chemical inertness
[0006] CN101880443A discloses a low-viscosity epoxy resin system for resin transfer molding and its preparation and use method. The epoxy resin system includes epoxy resin, reactive diluent, disinfectant Foaming agent and curing agent, but its operating time is short, still not suitable for the preparation of carbon fiber composites
[0007] CN101693765B discloses a silicone infusion resin and a preparation method thereof. The vacuum infusion resin is a silicone modified epoxy resin system, but the system has disadvantages such as poor bonding performance and low cured product strength.
[0008] CN104151780A discloses a vacuum infusion epoxy resin composition for wind turbine blades, while using a variety of different types of epoxy resins to reduce the viscosity of the composition, but the composition also has the problem of short operating time
[0009] In summary, although a variety of resin systems for wind turbine blades have been disclosed in the prior art, these materials either do not have low viscosity, or do not have high strength after making composite materials, or do not have Long operating time, not suitable for the preparation process of carbon fiber composite materials

Method used

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  • Epoxy resin composition, preparation method of epoxy resin composition and composite material for wind power blade
  • Epoxy resin composition, preparation method of epoxy resin composition and composite material for wind power blade
  • Epoxy resin composition, preparation method of epoxy resin composition and composite material for wind power blade

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Embodiment 1: the preparation of epoxy resin composition of the present invention

[0076] (1) Take by weighing 60 parts of E-54 type bisphenol A epoxy resin and 40 parts of 1,4-butanediol diglycidyl ether according to the parts by weight of each component in the component (A), the E-54 Add type bisphenol A epoxy resin into the reaction kettle, heat with temperature control, and the heating temperature is 70°C; then add 1,4-butanediol diglycidyl ether, stir for 30 minutes, evacuate until the vacuum degree is equal to 80mbar, and remove Bubbles, continue to stir for 2 hours to make the mixture uniform, stop stirring after breaking the vacuum with nitrogen, and let stand for 0.5 hours to obtain component (A), sealed and preserved;

[0077] (2) Weigh 70 parts of T403 polyetheramine, 10 parts of N-aminoethylpiperazine and 20 parts of 3,3-dimethyl-4,4 according to the parts by weight of each component in component (B). -Diamino-dicyclohexylmethane, add T403 type polyetheram...

Embodiment 2

[0080] Embodiment 2: the preparation of epoxy resin composition of the present invention

[0081] (1) Take by weighing 95 parts of E-51 type bisphenol A epoxy resin and 5 parts of 1,4-butanediol diglycidyl ether according to the parts by weight of each component in component (A), and E-51 Add type bisphenol A epoxy resin into the reaction kettle, heat with temperature control, and the heating temperature is 60°C; then add 1,4-butanediol diglycidyl ether, stir for 30 minutes, evacuate until the vacuum degree is equal to 70mbar, and remove Bubbles, continue to stir for 2 hours to make the mixture uniform, stop stirring after breaking the vacuum with nitrogen, and let stand for 0.5 hours to obtain component (A), sealed and preserved;

[0082] (2) Weigh 50 parts of D403 type polyetheramine, 20 parts of 1,3-bis(aminomethyl)cyclohexane and 30 parts of 4,4-dicyclohexane according to the parts by weight of each component in component (B). Amino-dicyclohexylmethane, add D403 type poly...

Embodiment 3

[0085] Embodiment 3: the preparation of epoxy resin composition of the present invention

[0086](1) Take by weighing 60 parts of E-44 type bisphenol A epoxy resin and 40 parts of 1,6-hexanediol diglycidyl ether according to the parts by weight of each component in the component (A), the E-44 Add type bisphenol A epoxy resin into the reaction kettle, heat with temperature control, and the heating temperature is 70°C; then add 1,6-hexanediol diglycidyl ether, stir for 25 minutes, evacuate until the vacuum degree is equal to 60mbar, and remove Bubbles, continue to stir for 2 hours to make the mixture uniform, stop stirring after breaking the vacuum with nitrogen, and let stand for 0.8 hours to obtain component (A), sealed and preserved;

[0087] (2) Weigh 50 parts of D400 type polyether amine, 15 parts of isophorone diamine and 35 parts of 3,3-dimethyl-4,4- Diamino-dicyclohexylmethane, add D400 type polyetheramine, isophorone diamine and 3,3-dimethyl-4,4-diamino-dicyclohexylmet...

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Abstract

The invention relates to an epoxy resin composition, a preparation method of the epoxy resin composition, as well as a composite material prepared by using the composition and used for a wind power blade and a preparation method of the composite material. The epoxy resin composition comprises epoxy resin, a diluting agent, polyether amine and alicyclic amine; by virtue of the synergistic effect of all the components, the composition has low viscosity, low exothermic peak time and long exothermic peak time and is applicable to a vacuum assisted resin infusion technique; a wind power blade composite material prepared from the composition and a carbon fiber reinforced material has relatively light weight and relatively high mechanical property, is applicable to large-scale production of the wind power blade and has bright application prospect and high market value.

Description

technical field [0001] The present invention relates to a resin material, more specifically to an epoxy resin composition and a preparation method thereof, and a composite material for wind power blades prepared by using the epoxy resin composition and a preparation method thereof, belonging to wind power blade materials field. Background technique [0002] In the current wind power industry, almost all commercial-grade wind power blades are made of composite materials, especially glass fiber composite materials. The method of preparing composite materials mainly adopts a relatively low-cost liquid molding technology, that is, vacuum infusion molding technology. This technology is to introduce epoxy resin into a vacuum system with reinforcing materials, so that the epoxy resin is soaked in the reinforcing materials, after curing, the two finally form a composite material with good performance. [0003] In order to meet the increasing energy demand in production and life an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/20C08G59/50C08L63/00C08K7/14C08K7/06B29C70/44
Inventor 兰军炎蓝军良
Owner 广东博汇新材料科技有限公司
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