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In-mold gel coat for wind power blades

A technology for wind turbine blades and gel coats, applied in coatings, polyurea/polyurethane coatings, etc., can solve the problems of low weather resistance and long curing time, and achieve obvious weather resistance, short mold time, and low irritation Effect

Active Publication Date: 2018-12-28
MEGA P&C ADVANCED MATERIALS SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In view of the problems of long curing time and low weather resistance existing in the existing in-mold gel coat, the main purpose of the present invention is to provide a high weather resistance and fast curing polyurea in-mold gel coat for wind power blades

Method used

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  • In-mold gel coat for wind power blades
  • In-mold gel coat for wind power blades
  • In-mold gel coat for wind power blades

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] This example provides a highly weather-resistant and fast-curing polyurea in-mold gel coat for wind power blades. The in-mold gel coat includes a main agent and a curing agent.

[0068] The main ingredient comprises the following components by weight:

[0069] Resin A1 100 parts;

[0070] Pigment and filler 0-100 parts;

[0071] Auxiliary 0-10 parts;

[0072] The resin A1 is a polymer formed by Michael addition reaction of diethyl maleate and hexamethylene diamine.

[0073] The pigment and filler are specifically weather-resistant rutile titanium dioxide.

[0074] Curing agent wherein is Desmodur N100, Desmodur N3300, DesmodurN3600 of Covestro Company, Tolonate HDT of Vencorex Company or similar products of other companies or isocyanate (NCO) weight content is a kind of in the aliphatic prepolymer of 1~20%

[0075] And the dosage of the curing agent is 50-100% of the weight of the resin A1 in the main agent.

[0076] Based on this, a weather-resistant fast-curing p...

Embodiment 2

[0078] This example provides a highly weather-resistant and fast-curing polyurea in-mold gel coat for wind power blades. The in-mold gel coat includes a main agent and a curing agent.

[0079] The main ingredient comprises the following components by weight:

[0080]

[0081] The resin A1 is a polymer formed by Michael addition reaction of diethyl maleate and hexamethylene diamine.

[0082] Resin B1 is a polymer formed by Michael addition reaction of diethyl maleate and amino-terminated polyether with a molecular weight of 230.

[0083] The pigment and filler are specifically weather-resistant rutile titanium dioxide.

[0084] Curing agent wherein is Desmodur N100, Desmodur N3300, DesmodurN3600 of Covestro Company, Tolonate HDT of Vencorex Company or similar products of other companies or isocyanate (NCO) weight content is a kind of in the aliphatic prepolymer of 1~20%

[0085] And the dosage of the curing agent is 50-100% of the weight of the resin in the main agent.

...

Embodiment 3

[0088] This example provides a highly weather-resistant and fast-curing polyurea in-mold gel coat for wind power blades. The in-mold gel coat includes a main agent and a curing agent.

[0089] The main ingredient comprises the following components by weight:

[0090]

[0091] Resin A2 wherein is the polymer that diethyl maleate and 4.4' diaminodicyclohexylmethane form by Michael addition reaction.

[0092] Resin B2 is a polymer formed by Michael addition reaction of dimethyl maleate and amino-terminated polyether with a molecular weight of 230.

[0093] The pigment and filler are specifically weather-resistant rutile titanium dioxide.

[0094] Curing agent wherein is Desmodur N100, Desmodur N3300, DesmodurN3600 of Covestro Company, Tolonate HDT of Vencorex Company or similar products of other companies or isocyanate (NCO) weight content is a kind of in the aliphatic prepolymer of 1~20%

[0095] And the dosage of the curing agent is 50-100% of the weight of the resin in th...

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Abstract

The invention discloses wind turbine blade in-mold gel coat, which comprises a main agent and a curing agent, wherein the main agent is prepared from the following ingredients in parts by weight: 50 to 100 parts of resin A, 0 to 50 parts of resin B; 0 to 100 parts of fillers and 0 to 10 parts of auxiliary agents; the resin A is an non-polyetheramine di-amine compound; the resin B is a polyetheramine di-amine compound; the dosage of a curing agent in the in-mold gel coat is 50 to 100 percent of the weight of the resin. Through experimental test, compared with the existing in-mold gel coat, the in-mold gel coat formed in such a way has the advantages that the curing time is greatly shortened; meanwhile, the weathering performance is greatly improved; high weathering performance and fast curing performance of the in-mold gel coat are realized; a blade paint coating can be directly replaced.

Description

technical field [0001] The invention relates to a composition, in particular to a gel coat for protecting wind power blades. Background technique [0002] At present, large-scale wind turbine blades with a power greater than 1MW at home and abroad generally use conventional airless spraying or roller coating of polyurethane coatings outside the mold to add protective coatings to the epoxy substrate. The basic construction process of this paint coating is as follows: [0003] 1. The liquid infusion resin of the base of the blade is poured onto the surface of the mold, cured to form a blade, and then released from the mold. [0004] 2. The blades after demoulding are subjected to pre-construction treatment procedures such as grinding. [0005] 3. Paint the surface of the blade to form a blade with a protective layer. [0006] Since the paint coating is applied outside the mold, the paint only needs to ensure the adhesion of the paint film on the cured blade resin, without c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/02C09D7/61
CPCC08K3/22C08K2003/2241C09D7/61C09D175/02
Inventor 刘正伟
Owner MEGA P&C ADVANCED MATERIALS SHANGHAI CO LTD
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