How to prepare high-performance graphene absorbing materials?

With the rapid development of modern electronic technology, electromagnetic wave pollution and electromagnetic interference problems have become increasingly prominent, and the research and development of high-performance absorbing materials have become particularly important. Graphene, as a two-dimensional nanomaterial with excellent conductivity, high thermal conductivity, and mechanical strength, has shown great potential in the field of absorbing materials. This article will provide a detailed introduction on how to prepareHigh performance graphene absorbing materialAnd introduce Advanced Institute (Shenzhen) Technology Co., Ltd. and its research platinum brand graphene absorbing materials as a case study for illustration.

Key steps in preparing high-performance graphene absorbing materials

1. Preparation of Graphene

There are various methods for preparing graphene, including chemical vapor deposition (CVD), mechanical exfoliation, redox methods, etc. Among them, the oxidation-reduction method is widely used due to its low cost and relatively simple process. During the preparation process, it is necessary to ensure the quality and purity of the graphene layers in order to achieve good conductivity and dispersibility.

2. Modification of Graphene

In order to improve the absorption performance of graphene, it is usually necessary to modify it. Modification methods include chemical modification, surface functionalization, and composite with other materials. For example, by adding materials such as magnetic particles and conductive polymers, the electromagnetic parameters of graphene can be adjusted to enhance its ability to absorb electromagnetic waves.

3. Preparation of composite materials

Mix modified graphene with other high-performance materials (such as metal oxides, ceramics, conductive polymers, etc.) in a certain proportion to form composite materials. In the preparation process of composite materials, it is necessary to control the proportion, dispersion uniformity, and interfacial bonding strength of each component to ensure that the composite material has excellent comprehensive performance.

4. Molding and curing

Process composite materials into the desired shape and size through hot pressing, injection molding, or other curing processes. During the molding process, it is necessary to strictly control parameters such as temperature, pressure, and time to ensure that the internal structure of the material is dense and defect free.

5. Performance optimization and testing

Conduct electromagnetic performance tests on the prepared high-performance graphene absorbing materials, including indicators such as reflection loss, absorption frequency band, and shielding effectiveness. Based on the test results, optimize the material composition, structure, and process to meet the requirements of specific application scenarios.

Case Study of Advanced Institute (Shenzhen) Technology Co., Ltd

Advanced Institute (Shenzhen) Technology Co., Ltd. has profound technical accumulation and rich practical experience in the field of graphene absorbing materials. itsResearch Platinum Graphene Absorbing MaterialsAdopting advanced preparation technology and optimized formula design, it has excellent absorption performance and stability.

Example of Preparation Process

Taking the preparation of research platinum brand graphene absorbing materials as an example, the company adopts the following process route:

1. Modification of graphene: Introducing specific functional groups on the surface of graphene through chemical modification methods to enhance its binding ability with other materials.
2. Preparation of composite materials: Modified graphene is mixed with metal oxides (such as ferrite), conductive polymers and other materials in a certain proportion, and a uniform composite material slurry is prepared by solution blending, ultrasonic dispersion and other methods.
3. Molding and curing: Coating or injection molding composite material slurry into a mold, and forming the desired shape of absorbing material through hot pressing or curing treatment.
4. Performance optimization: Based on the electromagnetic performance test results, adjust the material formula and process parameters to further optimize the absorption performance.

reference data

Experimental data shows that,Research Platinum Graphene Absorbing MaterialsIt exhibits excellent absorption performance in the frequency range of 2-18GHz. When the thickness of the composite material is 2mm, the frequency bandwidth with a reflection loss below -10dB can reach 4.5GHz (10.9~15.4GHz), and the reflection loss can even reach -32dB or more at specific frequencies, indicating that more than 99% of electromagnetic waves are absorbed by the material. These data fully verify the leading position of the material in the field of high-performance absorbing materials.

conclusion

The preparation of high-performance graphene absorbing materials is a complex and delicate process that requires comprehensive consideration of graphene preparation and modification, formulation design of composite materials, molding and curing processes, and performance optimization.Advanced Institute (Shenzhen) Technology Co., LtdThrough its advanced technology and rich experience, the R&D Platinum brand graphene absorbing material has been successfully developed, providing strong support for the solution of electromagnetic wave pollution and electromagnetic interference problems. In the future, with the continuous advancement and innovation of technology, high-performance graphene absorbing materials are expected to play an important role in more fields.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.