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Preparation and application of high-wettability epoxy resin composite material

A technology of epoxy resin and composite material, applied in the field of polymer material preparation, can solve the problem of lack of high wettability epoxy resin, etc., and achieve the effect of huge industrial production potential, low cost and low porosity

Inactive Publication Date: 2016-07-20
JIANGSU ZHAOJUN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: In order to overcome the problem of lack of high wettability epoxy resin in the preparation of carbon fiber prepregs in the prior art, the present invention proposes a preparation of a high wettability epoxy resin composite material with high wettability to carbon fibers and applications

Method used

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  • Preparation and application of high-wettability epoxy resin composite material

Examples

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Effect test

Embodiment 1

[0024] A kind of high wettability epoxy resin composite material is prepared by using epoxy resin, curing agent, defoamer and accelerator as raw materials. The epoxy resin is composed of liquid epoxy resin and solid epoxy resin. The preparation steps are as follows:

[0025] (1) Put 33kg of liquid epoxy resin bisphenol A type 128 and 67kg of solid epoxy resin bisphenol A type 901 in a 500L reaction kettle with a vacuum device, stir at 80-90℃ for 30 minutes, and mix them completely , Get mixed solution A;

[0026] (2) Add 2kg of defoamer A530 to the mixed solution A obtained in step (1), stir at 80-90°C for 30 minutes, and stir evenly to obtain a mixed solution B;

[0027] (3) Add 5 kg of curing agent 100S to the mixed solution B obtained in step (2), and stir at 70-80°C for 30 minutes to obtain a mixed solution C;

[0028] (4) Add 0.8kg of accelerator UR500 to the mixed solution B obtained in step (3), and stir at 70-80°C for 10 minutes to obtain mixed solution D, the viscosity of wh...

Embodiment 2

[0032] A kind of high wettability epoxy resin composite material is prepared by using epoxy resin, curing agent, defoamer and accelerator as raw materials. The epoxy resin is composed of liquid epoxy resin and solid epoxy resin. The preparation steps are as follows:

[0033] (1) Put 33kg of liquid epoxy resin bisphenol A type 128 and 67kg of solid epoxy resin bisphenol A type 901 in a 500L reaction kettle with a vacuum device, stir at 80-90℃ for 30 minutes, and mix them completely , Get mixed solution A;

[0034] (2) Add 2kg of defoamer A530 to the mixed solution A obtained in step (1), stir at 80-90°C for 30 minutes, and stir evenly to obtain a mixed solution B;

[0035] (3) Add 5 kg of curing agent 100S to the mixed solution B obtained in step (2), and stir at 70-80°C for 30 minutes to obtain a mixed solution C;

[0036] (4) Add 2kg of accelerator UR500 to the mixed liquid B obtained in step (3), and stir at 70-80°C for 10 minutes to obtain mixed liquid D, the viscosity of which is...

Embodiment 3

[0041] The application of the high wettability epoxy resin composite material of the above embodiment 1-2 is specifically:

[0042] Put the mixed solution D in the glue spreader, detect the thickness of the glue film or the surface density of the glue film through an infrared meter, reduce the temperature of the glue film through the cooling plate, reduce its curing degree, and make the glue film used for the prepreg; Then the above-mentioned film is drawn from the upper and lower film rolls of the prepreg machine, and forms a sandwich structure with the carbon fiber. It passes through several sets of hot pressing rolls to melt the resin matrix, and the carbon fiber is embedded in the resin matrix to cool down the prepreg. Temperature, trimming, PE film, and rewinding are performed to obtain a resin content of 25% high wettability epoxy resin carbon fiber prepreg, and the same resin content as the one prepared without defoaming agent A530 % Epoxy resin carbon fiber prepreg for co...

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Abstract

The invention discloses a high-wettability epoxy resin composite material and an application. The high-wettability epoxy resin composite material is prepared from the raw materials including epoxy resin, a curing agent, an accelerant and an antifoaming agent. Based on the antifoaming effect of the antifoaming agent on the epoxy resin and a perfect wetting effect on carbon fiber when the proportion of the antifoaming agent in the epoxy resin system is over 1% and with the supplemented synergistic effect between appropriate curing agent and accelerant and excellent mechanical properties of the epoxy resin, the composite material shows good wetting property on the carbon fiber in use, and a carbon fiber prepreg with low resin content can be prepared; and moreover, the preparation method of the carbon fiber prepreg with low resin content has the advantages of easiness, high efficiency, low cost and huge potential of industrial production while the product has the characteristics of low porosity, high strength and the like.

Description

Technical field [0001] The invention relates to the technical field of polymer material preparation, in particular to the preparation and application of a highly infiltrating epoxy resin composite material. Background technique [0002] Carbon fiber prepreg is a composite material made of carbon fiber yarn, epoxy resin and other materials through coating, hot pressing, cooling, laminating, coiling and other processes, also known as carbon fiber prepreg; It is called prepreg because it is only the initial impregnation of resin and carbon fiber, and it is the final impregnation when the product is formed. Carbon fiber prepreg is widely used in fishing tackle, sports equipment, sporting goods, aerospace and other fields. [0003] Existing epoxy resins have the disadvantage of poor wettability for the preparation of carbon fiber prepregs, especially in applications requiring extremely low porosity carbon fiber paper products, which require higher wettability. The existing epoxy resins ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K7/06
CPCC08L63/00C08L2203/16C08L2205/025C08K7/06
Inventor 鲁平才赵钎杨智明
Owner JIANGSU ZHAOJUN NEW MATERIAL CO LTD
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