Microwave-assisted efficient construction method for high-strength interface of carbon-based reinforcement/resin composite material

Abstract

The invention discloses a microwave-assisted efficient construction method for a high-strength interface of a carbon-based reinforcement / resin composite material, and belongs to the field of compositematerials. The method comprises the following step: modifying a carbon-based reinforcement by nanoparticles through a synergistic effect of physical coating and chemical grafting so as to form an interface (a cage-shaped interface structure) coated with a cage-shaped structure carbon source material shell. Based on the microwave irradiation activation principle, the activation of the carbon-basedreinforcement and the uniform self-assembly of the nanoparticles are realized by adjusting the ratio of the transition metal catalyst to the carbon source material to the nanoparticles. Compared withcomposite material traditional interface enhancement, the method of the invention is more efficient and faster, realizes the nanometer reinforcement of the interface of the carbon-based reinforcement / resin composite material, solves the problem that the structural integrity and strength of the carbon-based reinforcement are damaged by discharging and sparking of the carbon-based reinforcement ina microwave field, and has important significance in preparing the high-performance carbon-based reinforcement / resin composite material; and the high-strength interface can be applied to the high-techfields of composite material pressure containers, aerospace crafts and the like.

Description

technical field [0001] The invention belongs to the field of composite materials, and mainly relates to a microwave-assisted high-efficiency construction method for a carbon-based reinforcement / resin composite material interface. Background technique [0002] Carbon-based reinforcement / resin composites are widely used in the fields of transportation, aerospace and sporting goods due to their excellent properties such as high specific strength, high specific modulus, low density and corrosion resistance. In the field of carbon fiber reinforced resin composites, the carbonization process of carbon fiber production leads to the chemical inertness of the fiber surface, resulting in poor bonding at the fiber and resin interface in carbon matrix reinforcement / resin composites, especially under extreme conditions when it is easily damaged from the interface. It is difficult to control the dispersion of carbon-based nanoparticles in carbon-based nanoparticle-reinforced resin composi...

AI Technical Summary

Problems solved by technology

However, the application of microwave in carbon-based reinforcement / resin composites has the disadvantages of low practical application efficiency and poor controllability.

In summary, the main problems in the application of microwave in the construction of carbon-based reinforcement / resin composite material interface are as follows: 1. Carbon-based reinforcement is prone to discharge in the microwave field, and the modification of carbon-based reinforcement can be modified simultaneously. The degree and uniformity are not easy to control, and it is easy to cause detonation. The discharge at the defect and the tip seriously affects the interface strength and mechanical properties of the carbon-based reinforcement / resin composite; 2. Microwave etching has certain effects on the mechanical properties of the carbon-based reinforcement itself damage to the carbon-based reinforcement, its own structure, defects, etc. all affect the degree of microwave absorption, and it is difficult to control the degree of etching when the carbon-based reinforcement is activated; 3. In the traditional construction of the carbon-based reinforcement / resin composite interface , the interface sizing agent mainly enhances the interface through adhesion, and the interface connection is weak, and the sizing agent required for different carbon-based reinforcements is very different; 4. The traditional method of carbon-based reinforcement / resin composite interface construction is too It is cumbersome, requires long-term and multi-process processing, and also has certain damage to the performance of carbon-based reinforcements

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