Carbon fiber prepreg product and coating method thereof

A technology of carbon fiber prepreg and coating method, which is applied in the field of fiber products, can solve the problems of long solvent-based coating cycle, harsh working environment for workers, and great fire safety hazards, and achieve various decorative effects, good hardness, and zero VOCs Effect

Active Publication Date: 2019-12-31
FOSHAN YIKEJU NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, solvent-based coatings have a long coating cycle, serious coating waste, serious VOCs emissions, serious air pollution, great fire safety hazards, and harsh working conditions for workers. Solvent-based coatings are restricted by the National Environmental Protection Agency.

Method used

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  • Carbon fiber prepreg product and coating method thereof
  • Carbon fiber prepreg product and coating method thereof
  • Carbon fiber prepreg product and coating method thereof

Examples

Experimental program
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Effect test

Embodiment example

[0068] As a preferred embodiment of the present invention, the raw materials of the ultra-low temperature powder coating include: polyester resin, epoxy resin and auxiliary agents, and the auxiliary agents include one or more of catalysts, anti-sticking agents and defoamers .

[0069] Wherein, the main material of the ultra-low temperature powder coating is the main polyester resin containing carboxyl groups, the glass transition temperature is 40-60°C, the acid value is 10-75, and the curing temperature is 110-120°C. Then use low-temperature curing (80-90°C) liquid or low-viscosity solid epoxy resin, and use high-efficiency catalysts to perform low-temperature ring-opening reaction on epoxy resin, add a new type of defoamer for degassing and defoaming, and add a new type of anti-foaming agent. Adhesive, to better solve the problem of adhesion and agglomeration.

[0070] The catalyst can specifically be selected from 2-methylimidazole, 2-phenylimidazoline, tertiary amine and ...

Embodiment 1

[0100] (1) Select a carbon fiber prepreg product and perform dust removal and cleaning treatment. The carbon fiber prepreg product is a cured carbon fiber prepreg product.

[0101] (2) Grinding the carbon fiber prepreg product after dust removal and cleaning.

[0102] (3) Perform preheating treatment on the surface of the carbon fiber prepreg product after the grinding treatment, the preheating temperature is 70° C., and the preheating time is 5 minutes.

[0103] (4) Carry out one or more powder coatings on the surface of the preheated carbon fiber prepreg product, each coating thickness is 5 μm to form a powder coating, wherein, the powder coating adopts commercially available ultra-low temperature Powder coating, the ultra-low temperature powder coating has a spraying particle size of 5-25 μm, a D90 of less than 25 μm, a glass transition temperature of 40°C, a gelling time of 50s at 110°C, a curing temperature of 90°C, and a curing time of 3 minutes.

[0104] (5) Infrared c...

Embodiment 2

[0108] (1) Select a carbon fiber prepreg product and perform dust removal and cleaning treatment. The carbon fiber prepreg product is a cured carbon fiber prepreg product.

[0109] (2) Carrying out sticker treatment on the carbon fiber prepreg product after dust removal and cleaning treatment.

[0110] (3) Preheating the surface of the carbon fiber prepreg product after the sticker treatment, the preheating temperature is 80° C., and the preheating time is 10 minutes.

[0111] (4) Carry out one or more powder coatings on the surface of the preheated carbon fiber prepreg product, each coating thickness is 8 μm, to form a powder coating, wherein, the powder coating adopts commercially available ultra-low temperature Powder coating, the ultra-low temperature powder coating has a spraying particle size of 5-25 μm, a D90 of less than 25 μm, a glass transition temperature of 50°C, a gelling time of 60s at 110°C, a curing temperature of 100°C, and a curing time of 4 minutes.

[0112...

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Abstract

The invention discloses a coating method of a carbon fiber prepreg product. The coating method comprises the following steps: (1) selecting a carbon fiber prepreg product, and carrying out dust removal cleaning treatment; (2) carrying out sealing treatment on the carbon fiber prepreg product; (3) preheating the surface of a sealed carbon fiber prepreg product; (4) carrying out one time of a plurality of times of powder coating on the surface of the preheated carbon fiber prepreg product to form a powder coating layer; (5) carrying out curing treatment on the powder coating layer on the surfaceof the carbon fiber prepreg product; (6) carrying out decoration treatment on the cured carbon fiber prepreg product; and (7) carrying out quality inspection packaging on the decorated carbon fiber prepreg product to obtain a finished product. Correspondingly, the invention also provides the carbon fiber prepreg product prepared by the method. The method is simple, the process is controllable, nosolvent participates in the reaction, VOCs are not released, and no waste is generated.

Description

technical field [0001] The invention relates to the technical field of fiber products, in particular to a carbon fiber prepreg product and a coating method thereof. Background technique [0002] Carbon fiber refers to high-strength and high-modulus fibers with a carbon content of more than 90%. High temperature resistance ranks first among all chemical fibers. Carbon fiber is made of acrylic fiber and viscose fiber, which is oxidized and carbonized at high temperature. It is an excellent material for manufacturing high-tech equipment such as aerospace and aviation. [0003] Carbon fiber prepreg products are generally prepreg compounded with liquid epoxy resin, and its curing temperature is 80-100 degrees, and it is relatively brittle in the thickness direction. In addition, the surface of carbon fiber is relatively inert and not easy to wet, so the carbon fiber pre-impregnated epoxy composite material has many pores, so the carbon fiber pre-impregnated epoxy composite mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C08J7/00C09D167/00C09D163/00C09D5/03C09D7/61C08L63/00
CPCC08J7/00C08J7/04C08J7/08C08J2363/00C08J2463/00C08J2467/00C08K2003/2227C08K2201/011C08K2201/014C08L2205/03C09D5/031C09D5/033C09D163/00C09D167/00C08L63/00C08K3/22C08K3/36C08L67/00
Inventor 伍明
Owner FOSHAN YIKEJU NEW MATERIAL CO LTD
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