Preparation method and system of high-toughness thermosetting resin-based prepreg

A thermoplastic resin and thermosetting technology, applied in the field of materials, can solve the problems of composite material stability and poor internal quality, and achieve the effect of solving preparation problems and improving the degree of infiltration.

Pending Publication Date: 2022-03-04
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method and system for preparing a high-toughness thermosetting resin-based prepreg to solve the technical problem of poor stability and internal quality of the composite material caused by the concentration of toughening agent particles under high toughness requirements

Method used

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  • Preparation method and system of high-toughness thermosetting resin-based prepreg
  • Preparation method and system of high-toughness thermosetting resin-based prepreg
  • Preparation method and system of high-toughness thermosetting resin-based prepreg

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preparation example Construction

[0030] Such as image 3 As shown, the preparation method of the high toughness thermosetting resin-based prepreg provided by the invention comprises the following steps:

[0031] Preparation of thermoplastic resin particle suspension: disperse thermoplastic resin particles used for toughening in a poor solvent to obtain thermoplastic resin particle suspension;

[0032] Preparation of thermosetting resin matrix adhesive film: heating and mixing the thermosetting resin matrix components to form a homogeneous resin matrix, and coating to form a thermosetting resin matrix adhesive film;

[0033] Slurry infiltration: soak the reinforcement material into the thermoplastic resin particle suspension and dry it to obtain the reinforcement material after the dry slurry infiltration;

[0034] Hot-press infiltration: Pull the reinforcing material soaked in the dry slurry into the hot-melt prepreg machine, and heat-press infiltrate with the thermosetting resin matrix film to obtain a ther...

Embodiment 1

[0047] Preparation of modified bismaleimide resin prepreg reinforced with thermoplastic polyimide resin:

[0048] The thermoplastic polyimide resin particles were dispersed in water using a planetary disperser, and the thermoplastic polyimide suspension was obtained by vigorously dispersing, with a solid content of 20%. Use a film machine to coat the modified bismaleimide resin matrix into a film, and the surface density of the film is 25g / m 2 . Install the 280-axis carbon fiber on the creel and pull it to the traction roller for production. Start the prepreg machine, the carbon fiber first goes through the yarn spreading and then enters the slurry tank, is evenly impregnated with the thermoplastic polyimide suspension, and then enters the high-temperature oven to dry the water in the suspension. Then the carbon fiber enters the hot-melt prepreg part, and the upper and lower adhesive films are covered on the carbon fiber. Under the heat and pressure of multiple pairs of hot ...

Embodiment 2

[0051] Preparation of modified bismaleimide resin prepreg toughened by thermoplastic polyaryletherketone resin:

[0052] The thermoplastic polyaryletherketone resin particles were dispersed in ethanol using a planetary disperser, and the thermoplastic polyimide suspension was obtained by strong dispersion, with a solid content of 16%. Use a film machine to coat the modified epoxy amine resin matrix into a film, and the surface density of the film is 33g / m 2 . Install the 120-axis carbon fiber on the creel and pull it to the traction roller for production. Start the prepreg machine, the carbon fiber first goes through the yarn spreading and then enters the slurry tank, is evenly impregnated with the thermoplastic polyimide suspension, and then enters the high-temperature oven to dry the water in the suspension. Then the carbon fiber enters the hot-melt prepreg part, and the upper and lower adhesive films are covered on the carbon fiber. Under the heat and pressure of multiple...

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Abstract

The invention relates to the technical field of materials, in particular to a preparation method and system of a high-toughness thermosetting resin-based prepreg. According to the preparation method and system, thermoplastic resin particles and a resin matrix are prepared separately, and a reinforcing material is infiltrated separately; the method comprises the following steps: independently dispersing thermoplastic resin particles for toughening in a poor solvent, infiltrating a reinforcing material in the form of a thermoplastic resin particle suspension, drying the solvent to obtain a reinforcing material with uniformly distributed thermoplastic resin particles, and infiltrating the reinforcing material with other resin matrixes by a hot melting method to obtain the thermoplastic resin composite material. The thermoplastic resin particles of the high-toughness thermosetting resin-based prepreg are uniformly distributed, and the resin matrix of the high-toughness thermosetting resin-based prepreg is fully infiltrated; the prepreg preparation method provided by the invention can improve the infiltration degree of the resin on the reinforcing material and the consistency of the internal quality of the prepreg, and solves the preparation problem of the high-toughness resin-based composite material.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a preparation method and system for a high-toughness thermosetting resin-based prepreg. Background technique [0002] At present, in the existing technology, high-performance carbon fiber composite materials have been favored by engineering designers and widely used due to their advantages of high strength, high stiffness, light weight, fatigue resistance, corrosion resistance, and unique designability. Together with aluminum alloy and titanium alloy, it has become the three main materials of aviation. Since the breakthrough in the continuous preparation technology of polyacrylonitrile-based carbon fibers in the 1960s, the strength and modulus of carbon fibers have been continuously improved through years of continuous research and development and application practices in the industry. [0003] The continuous improvement of the tensile strength and modulus of carbon fiber requ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/24C08L79/08C08L71/10C08K7/06B29C70/50
CPCC08J5/24B29C70/50C08J2379/08C08J2479/08C08J2471/10
Inventor 闫鸿琛石峰晖张宝艳
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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