Advanced Institute (Shenzhen) Technology Co., Ltd.: The Path to Enhancing the Oxidation and Corrosion Resistance of Graphene Absorbing Materials

In today's era of rapid technological development, the electromagnetic environment is becoming increasingly complex, and the demand for absorbing materials is becoming more urgent. Graphene absorbing materials have shown great potential in the field of absorption due to their unique physical and chemical properties, such as high conductivity and large specific surface area. However, its lack of oxidation and corrosion resistance limits its application in some harsh environments. Advanced Institute (Shenzhen) Technology Co., Ltd. has been committed to overcoming this challenge and exploring a series of effective methods to enhance the oxidation and corrosion resistance of graphene absorbing materials through continuous research and innovation.

Material composite reinforcement protection

Composite with metal oxides

Metal oxides have good chemical stability and antioxidant properties. Advanced Institute (Shenzhen) Technology Co., Ltd. combines graphene with metal oxides such as titanium dioxide (TiO ₂), zinc oxide (ZnO), etc. Taking TiO ₂ as an example, it has high chemical inertness and photocatalytic activity. During the composite process, TiO ₂ particles are uniformly distributed on the surface of graphene, forming a physical barrier that prevents oxygen and corrosive substances from directly contacting graphene. Meanwhile, the photocatalytic effect of TiO ₂ can decompose organic pollutants adsorbed on the surface of the material, further protecting graphene. The company has prepared graphene TiO ₂ composite microwave absorbing material through the sol gel method. The experimental results show that the stability of the composite material in the high-temperature oxidation environment is significantly improved, and the microwave absorbing performance remains relatively stable in the long-term oxidation process.

Composite with ceramic materials

Ceramic materials usually have excellent oxidation resistance, corrosion resistance, and high temperature stability. The company composites graphene with ceramic materials such as silicon carbide (SiC) and aluminum oxide (Al ₂ O ∝). SiC has high hardness, high strength, and good chemical stability. In graphene SiC composite absorbing materials, SiC forms a robust skeleton structure, enhancing the overall stability of the material. At the same time, the presence of SiC can also regulate the electromagnetic properties of composite materials, making them perform better in absorbing waves. The graphene SiC composite absorbing material prepared by hot pressing sintering and other processes has significantly improved its oxidation resistance and corrosion resistance in strong corrosive environments, and its absorbing performance has not been significantly affected.

coating technology

ORGANIC COATING

Organic coatings have good flexibility and processability, and can tightly adhere to the surface of graphene absorbing materials, forming a continuous protective film. Advanced Institute (Shenzhen) Technology Co., Ltd. has developed a special organic silicon coating that has excellent weather resistance, oxidation resistance, and corrosion resistance. The silicon oxygen bonds in organic silicon coatings have high bond energy and can effectively resist the erosion of oxygen and corrosive substances. During the coating process, the company optimizes the thickness and uniformity of the coating to ensure that it can fully exert its protective effect. Graphene absorbing materials treated with organic silicon coating exhibit good corrosion resistance in salt spray tests, and their absorption performance can still be maintained at a high level in long-term corrosive environments.

inorganic coating

Inorganic coatings such as metal coatings, ceramic coatings, etc. are also used to enhanceGraphene absorbing materialThe antioxidant and anti-corrosion properties. The company uses Physical Vapor Deposition (PVD) technology to deposit a layer of metallic aluminum coating on the surface of graphene absorbing materials. Aluminum can form a dense layer of aluminum oxide protective film in the air, preventing further invasion of oxygen and moisture. Meanwhile, metal coatings can also improve the conductivity and electromagnetic shielding performance of materials. In addition, ceramic coatings such as silicon nitride (Si ∝ N ₄) coatings also have good oxidation and corrosion resistance properties. The Si ∝ N ₄ coating prepared by chemical vapor deposition (CVD) and other methods can provide reliable protection for graphene absorbing materials, enabling them to maintain stable absorbing performance in harsh environments such as high temperature and high humidity.

Structural design optimization

Multi layer structure design

Advanced Institute (Shenzhen) Technology Co., LtdA multi-layer structured graphene absorbing material has been designed to enhance its oxidation and corrosion resistance through the synergistic effect between different layers. For example, in a multi-layer structure, the outer layer is made of materials with good oxidation and corrosion resistance, such as metal oxides or ceramic materials, the middle layer is a graphene absorber layer, and the inner layer is a support layer. The outer layer material can effectively block external oxygen and corrosive substances, protecting the graphene absorbing layer in the middle. At the same time, the multi-layer structure can also increase the reflection and scattering of electromagnetic waves inside the material, improving the absorption performance. The multi-layer structured graphene absorbing material developed by the company has shown excellent oxidation and corrosion resistance in practical applications, and its absorbing performance has also been further improved.

Porous structure design

Porous structures can increase the specific surface area of materials and improve their contact area with the external environment, but at the same time, they may also increase the risk of oxidation and corrosion of materials. The company precisely controls the pore size and porosity of the porous structure, ensuring good absorption performance while improving oxidation and corrosion resistance. In porous structures, pores can serve as buffer spaces, reducing the direct impact of the external environment on the interior of the material. At the same time, some substances with antioxidant and anti-corrosion properties, such as nano metal particles or organic small molecules, can be loaded on the pore surface to further enhance the protective ability of the material. The optimized porous graphene absorbing material has achieved significant improvements in oxidation and corrosion resistance, providing the possibility for its application in harsh environments.

Advanced Institute (Shenzhen) Technology Co., Ltd. has effectively improved the oxidation and corrosion resistance of graphene absorbing materials through various methods such as material composite, surface coating technology, and structural design optimization. These research results not only provide technical support for the wider application of graphene absorbing materials in various fields, but also lay a solid foundation for the company's development in the field of absorbing materials. In the future, the company will continue to conduct in-depth research, constantly explore new methods and technologies, and make greater contributions to improving the comprehensive performance of graphene absorbing materials.