Super-heat-resistant high-strength metamaterial and preparation method thereof

Abstract

The invention discloses a super-heat-resistant high-strength metamaterial and a preparation method thereof. The super-heat-resistant high-strength metamaterial comprises the following components: 50-120 parts of a base material, 30-50 parts of a wave-absorbing material, 20-30 parts of a heat-resistant heat-conducting material, 20-30 parts of a structure reinforcing material and 3-5 parts of an auxiliary agent, wherein the base material comprises a metal framework material and macromolecular resin, and the proportion of the materials is 1.5: 1; the metamaterial structure prepared by the process has excellent wave-absorbing performance, heat resistance, insulating performance and higher structural strength, and can have a good wave-absorbing effect in a specific frequency band; good performance can be kept in a high-temperature environment; meanwhile, the tensile strength and the bending strength are high, and the mechanical requirements of different application scenes are met.

Description

Technical Field

[0001] The present invention belongs to the technical field of metamaterials and relates to a super heat-resistant and high-strength metamaterial and a preparation method thereof. Background Art

[0002] With the continuous development of science and technology, the requirements for material properties are also increasing day by day. As an emerging material, metamaterials have shown great application potential in many fields due to their unique structures and properties, such as electromagnetics, optics, acoustics, etc. However, in practical applications, the heat resistance and wear resistance of metamaterials often become important factors limiting their wide application.

[0003] In terms of heat resistance, when metamaterials are exposed to high-temperature environments for a long time, deformation, cracking, and even failure are likely to occur inside the materials. Moreover, during use, the mechanical properties such as hardness and toughness of metamaterials may also be inferior to those of traditional wear-resistant materials, posing great challenges in wear-resistant applications. Therefore, how to improve the heat resistance and wear resistance of metamaterials is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A super heat-resistant and high-strength metamaterial, calculated by mass fraction, includes the following components: 50 - 120 parts of matrix material, 30 - 50 parts of wave-absorbing material, 20 - 30 parts of heat-resistant and heat-conducting material, 20 - 30 parts of structure-enhancing material, and 3 - 5 parts of additives;

[0006] Among them, the matrix material includes: a metal skeleton material and a polymer resin, and the material ratio is: 1.5:1;

[0007] The wave-absorbing material includes but is not limited to: one or a combination of more of graphene, graphite, carbon fiber, ferrite, magnetic iron, silicon carbide;

[0008] The heat-resistant and heat-conducting material uses ceramic fiber and silicon dioxide as the main materials; boron nitride, polyphenylene sulfide, and polyimide are selected as auxiliary materials and are selectively used according to the actual environmental requirements of the metamaterial during preparation;

[0009] The structure-enhancing material includes but is not limited to: one or a combination of more of carbon fiber, glass fiber, and alumina.

[0010] As a further solution of the present invention: the additives include but are not limited to: coupling agents, antioxidants, and lubricants.

[0011] As a further solution of the present invention: the heat-resistant and heat-conducting material includes but is not limited to: one or a combination of more than one of boron nitride, polyphenylene sulfide, and polyimide.

[0012] A preparation method of a super heat-resistant and high-strength metamaterial, which comprises the following preparation steps:

[0013] S1: Pretreatment of raw materials:

[0014] Perform surface treatment on carbon fiber, glass fiber, and ceramic fiber in the raw materials;

[0015] Perform grinding and dispersion treatment on the remaining wave-absorbing material, heat-resistant and heat-conducting material, and structural reinforcement material;

[0016] S2: Mixing and stirring:

[0017] Add the pretreated wave-absorbing material, heat-resistant and heat-conducting material, and structural reinforcement material and the metal skeleton material into a high-speed mixer in a certain proportion for sufficient mixing;

[0018] Then add a polymer resin as an adhesive, and add auxiliary agents such as a coupling agent, an antioxidant, and a lubricant, and continue stirring to make each component uniformly dispersed;

[0019] S3: Molding process:

[0020] Through compression molding or injection molding, etc., make the mixed material into the required shape and size, so as to complete the preparation work of the metamaterial.

[0021] As a further solution of the present invention: in step S1, after the wave-absorbing material, heat-resistant and heat-conducting material, and structural reinforcement material are subjected to grinding and dispersion treatment, drying and screening treatment are also required.

[0022] As a further solution of the present invention: in step S3, after the molding work of the metamaterial is completed, the product also needs to be heat-treated.

[0023] The beneficial effects of the present invention: The metamaterial structure prepared by the process of the present invention has excellent wave-absorbing performance, heat-resistant performance, insulating performance, and has relatively high structural strength, and can have good wave-absorbing effect in a specific frequency band; it can maintain good performance in a high-temperature environment; at the same time, it has relatively high tensile strength and bending strength, meeting the mechanical requirements of different application scenarios. Specific embodiments

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. It should be understood that the present application is not limited by the exemplary embodiments described herein. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0025] In an embodiment of the present invention, a super heat-resistant and high-strength metamaterial, calculated by mass fraction, includes the following components: 50 - 120 parts of a matrix material, 30 - 50 parts of an electromagnetic wave absorbing material, 20 - 30 parts of a heat-resistant and heat-conducting material, 20 - 30 parts of a structure reinforcing material, and 3 - 5 parts of an additive.

[0026] Among them, the matrix material includes: a metal framework material and a polymer resin, and the material ratio is: 1.5:1; among them, the metal framework material serves as the matrix structure material of the metamaterial, playing the role of overall structure support, while the polymer resin serves as the matrix auxiliary material, playing the role of component bonding, forming a complete overall structure;

[0027] The electromagnetic wave absorbing material includes but is not limited to: one or a combination of more of graphene, graphite, carbon fiber, ferrite, magnetic iron, and silicon carbide; combined with the matrix material, it provides the characteristic of effectively absorbing electromagnetic waves;

[0028] The heat-resistant and heat-conducting material uses ceramic fiber and silicon dioxide as the main materials, and also includes but is not limited to: one or a combination of two of boron nitride, polyphenylene sulfide, and polyimide; among them, the ceramic fiber combines with the matrix material to provide high-temperature resistance; silicon dioxide combines with the matrix material to provide insulation characteristics and at the same time enhance the heat resistance of the material;

[0029] While boron nitride, polyphenylene sulfide, and polyimide are used as auxiliary materials and are selectively used according to the actual environmental requirements of the metamaterial during the preparation process; among them: boron nitride: has good insulation and heat conduction properties, which helps to improve the heat dissipation performance of the material; polyphenylene sulfide: can endow the material with good heat resistance and chemical stability; and polyimide provides excellent properties at high temperatures, enhancing the heat resistance and insulation of the material;

[0030] The structure reinforcing material includes but is not limited to: one or a combination of more of carbon fiber, glass fiber, and alumina; combined with the matrix material, it can effectively enhance the mechanical properties of the material, improve the toughness and impact resistance of the material, increase the structural hardness and wear resistance, thereby effectively increasing the service life of the metamaterial in different environments.

[0031] Furthermore, the additive includes but is not limited to: coupling agent, antioxidant, and lubricant.

[0032] Among them: The coupling agent can, during the processing and use: improve the interfacial bonding force between the fiber and the matrix, and enhance the comprehensive performance of the material.

[0033] The antioxidant can prevent the material from undergoing oxidative degradation during processing and use, and improve the stability of the material.

[0034] The lubricant can reduce the friction during the processing of the material, achieve the lubrication effect, and improve the forming performance of the material.

[0035] In order to achieve the preparation of the above-mentioned super heat-resistant and high-strength metamaterial, in the embodiments of the present invention, a preparation method of the super heat-resistant and high-strength metamaterial is further provided, which specifically includes the following preparation steps:

[0036] S1: Pretreatment of raw materials:

[0037] Perform surface treatment on the carbon fiber, glass fiber, and ceramic fiber in the raw materials to improve the surface performance of the reinforcing fiber, thereby enhancing its compatibility with the matrix material;

[0038] Grind and disperse the remaining wave-absorbing material, heat-resistant and heat-conducting material, and structural reinforcing material to ensure that they can achieve a uniform distribution effect in the metamaterial;

[0039] Dry and screen the heat-resistant and heat-conducting material powder to remove impurities and agglomerates;

[0040] S2: Mixing and stirring:

[0041] Add the pretreated wave-absorbing material, heat-resistant and heat-conducting material, and structural reinforcing material and the metal skeleton material into a high-speed mixer in a certain proportion for sufficient mixing;

[0042] Then add a polymer resin as an adhesive, and add auxiliary agents such as a coupling agent, an antioxidant, and a lubricant, and continue stirring to make each component uniformly dispersed;

[0043] S3: Molding process:

[0044] Through compression molding or injection molding, etc., the mixed material is made into the required shape and size, thereby completing the preparation work of the metamaterial.

[0045] Further, in step S1, after the wave-absorbing material, heat-resistant and heat-conducting material, and structural reinforcing material are ground and dispersed, they also need to be dried and screened to remove impurities and agglomerates in the material and improve the preparation quality.

[0046] Further, in step S3, after the molding work of the metamaterial is completed, the product also needs to be heat-treated to improve the stability of the structural performance of the metamaterial.

[0047] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A super heat-resistant and high-strength metamaterial, characterized in that, by mass fraction, it comprises the following components: 50 - 120 parts of a matrix material, 30 - 50 parts of an electromagnetic wave absorbing material, 20 - 30 parts of a heat-resistant and heat-conducting material, 20 - 30 parts of a structure reinforcing material, and 3 - 5 parts of an additive; Among them, the matrix material includes: a metal framework material and a polymer resin, and the material proportion is: 1.5:1； The absorbing material includes but is not limited to: a combination of one or more of graphene, graphite, carbon fiber, ferrite, magnetic iron, and silicon carbide; The heat-resistant and thermally conductive materials are mainly made of ceramic fiber and silicon dioxide; boron nitride, polyphenylene sulfide and polyimide are selected as auxiliary materials. During the preparation process, they are selectively used according to the actual environmental requirements of the metamaterial. The structural reinforcement material includes, but is not limited to, a combination of one or more of carbon fiber, glass fiber, and alumina.

2. The ultra-heat-resistant and high-strength metamaterial according to claim 1, wherein Additives include but are not limited to coupling agents, antioxidants and lubricants.

3. The ultra-heat-resistant and high-strength metamaterial according to claim 1, characterized in that, The heat-resistant and heat-conductive material includes, but is not limited to, a combination of one or more of boron nitride, polyphenylene sulfide, and polyimide.

4. A method for preparing an ultra-heat-resistant and high-strength metamaterial, for preparing an ultra-heat-resistant and high-strength metamaterial according to any one of claims 1 to 3, comprising the following preparation steps: S1: Raw material pretreatment: Surface treatment of carbon fiber, glass fiber and ceramic fiber in raw materials; Grind and disperse the remaining absorbing materials, heat-resistant and heat-conductive materials, and structural reinforcement materials; S2: Mixing and stirring: Add the pretreated absorbing material, heat-resistant and heat-conductive material, structural reinforcement material and metal skeleton material into a high-speed mixer in a certain proportion and mix them thoroughly; Then add polymer resin as adhesive, add coupling agent, antioxidant and lubricant and other additives, continue stirring to make the components evenly dispersed; S3: Molding process: The mixed materials are formed into the desired shape and size through compression molding or injection molding, thereby completing the preparation of metamaterials.

5. The preparation method of a super heat-resistant and high-strength metamaterial according to claim 4, characterized in that, In step S1, after the absorbing material, the heat-resistant and heat-conductive material and the structural reinforcement material are ground and dispersed, they need to be dried and sieved.

6. The preparation method of a super heat-resistant and high-strength metamaterial according to claim 4, characterized in that, In step S3, after the metamaterial is formed, the product needs to be heat treated.