Advanced Institute (Shenzhen) Technology Co., Ltd.: Overcoming the problem of stable high and low temperature performance of graphene absorbing materials

In many application scenarios of modern technology, such as aerospace, national defense and military, as well as electronic devices in extreme environments, absorbing materials need to maintain stable performance in high or low temperature environments. Graphene absorbing materials have become a research hotspot in the field of absorption due to their unique advantages, but the stability of their performance in high and low temperature environments has always been a key factor restricting their widespread application.Advanced Institute (Shenzhen) Technology Co., LtdWith its strong scientific research capabilities and innovative spirit, it actively explores solutions and is committed to solving the performance stability problem of graphene absorbing materials in high and low temperature environments.

Performance Challenges and Response Strategies in High Temperature Environments

The Effect of High Temperature on Graphene Absorbing Materials

Graphene absorbing materials face many challenges in high-temperature environments. On the one hand, high temperatures can cause chemical bond breakage and structural changes within materials, thereby affecting their electromagnetic properties. For example, high temperature may cause distortion in the crystal structure of graphene, reducing its conductivity and electron mobility, thereby affecting its ability to absorb electromagnetic waves. On the other hand, high temperatures may also trigger chemical reactions between materials and the surrounding environment, accelerate material aging and degradation, and lead to a decrease in absorption performance.

Material composite enhances thermal stability

Advanced Institute (Shenzhen) Technology Co., Ltd. adopts the method of material composite to improveGraphene absorbing materialHigh temperature stability. Composite graphene with materials with good thermal stability such as ceramics, metal oxides, etc. Ceramic materials have high melting points, low coefficients of expansion, and good chemical stability, which can maintain structural integrity at high temperatures. Metal oxides such as alumina and titanium dioxide also have high thermal stability and chemical inertness. By combining these materials with graphene, a stable structure can be formed, reducing the impact of high temperatures on graphene. For example, the graphene alumina composite absorbing material developed by the company can be supported and protected by alumina at high temperatures, preventing damage to the graphene structure and maintaining the material's absorbing performance.

Optimizing the preparation process to improve crystallinity

Optimizing the preparation process is also an important means to improve the high-temperature stability of graphene absorbing materials. The company has improved the crystallinity of graphene by improving preparation methods such as chemical vapor deposition (CVD). Graphene with high crystallinity has a more stable structure and better thermal stability. During the preparation process, precise control of parameters such as reaction temperature, gas flow rate, and reaction time enables graphene to form a complete crystal structure. In addition, post-treatment processes such as high-temperature annealing can be used to further improve the crystallinity and thermal stability of graphene.

Introduce thermal protective coating

In order to further protect the performance of graphene absorbing materials in high-temperature environments, Advanced Institute (Shenzhen) Technology Co., Ltd. has introduced thermal protective coatings. Thermal protective coatings can provide insulation, oxidation resistance, and corrosion protection, reducing the direct impact of high temperatures on materials. The company has developed a new type of ceramic based thermal protection coating, which has good thermal insulation performance and high temperature stability, and can effectively block the transfer of heat, protecting the internal structure of graphene absorbing materials. At the same time, the coating also has certain oxidation and corrosion resistance, which can prevent the material from being oxidized and corroded in high temperature environments.

Performance challenges and coping strategies in low-temperature environments

The Effect of Low Temperature on Graphene Absorbing Materials

In low-temperature environments, graphene absorbing materials also face the problem of performance degradation. Low temperature can increase the brittleness of materials, making them prone to cracking and fracture, thereby affecting their structural integrity and absorption performance. In addition, low temperature can also affect the electronic motion and polarization process inside the material, reducing its ability to absorb electromagnetic waves.

Choose the appropriate matrix material

In order to improve the performance stability of graphene absorbing materials in low-temperature environments, Advanced Institute (Shenzhen) Technology Co., Ltd. has chosen a matrix material with good low-temperature toughness. For example, some rubber materials can maintain good flexibility and elasticity at low temperatures, effectively buffering the stress caused by low temperatures and preventing material cracking and fracture. The company has composite graphene with rubber matrix to prepare absorbing materials with good low-temperature performance. At low temperatures, the rubber matrix can provide good support and protection for graphene, maintaining the structural stability of the material.

Optimize microstructure design

Optimizing the microstructure of graphene absorbing materials is also key to improving their low-temperature performance. The company improves the flexibility and low-temperature resistance of materials by designing special microstructures such as porous structures, layered structures, etc. Porous structures can increase the elasticity and buffering capacity of materials, reducing stress concentration caused by low temperatures. Layered structure can enhance the material's deformation ability at low temperatures and prevent crack propagation. For example, the porous graphene rubber composite absorbing material developed by the company has a porous structure that can effectively absorb and disperse stress at low temperatures, maintaining the material's absorbing properties.

Add low-temperature plasticizer

In order to further improve the flexibility and processing performance of graphene absorbing materials in low-temperature environments, Advanced Institute (Shenzhen) Technology Co., Ltd. has added low-temperature plasticizers. Low temperature plasticizers can lower the glass transition temperature of materials, allowing them to maintain good fluidity and plasticity at low temperatures. The company has screened multiple low-temperature plasticizers and optimized their formulations to ensure good compatibility and synergistic effects between plasticizers and graphene absorbing materials. After adding low-temperature plasticizers, the flexibility and absorption performance of the material at low temperatures have been significantly improved.

Advanced Institute (Shenzhen) Technology Co., Ltd. has effectively solved the performance stability problem of graphene absorbing materials in high or low temperature environments through various methods such as material composite, optimization of preparation processes, introduction of thermal protective coatings, selection of suitable matrix materials, optimization of microstructure design, and addition of low-temperature plasticizers. These research results provide strong technical support for the application of graphene absorbing materials in extreme environments, and 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 innovate, and provide better solutions to address more material performance issues.