Graphene heat dissipation coating
With the development of electronic circuits and communication technology, electronic devices and high-performance chips are constantly developing in the direction of miniaturization, light weight, and high efficiency.
The size of the device is gradually shrinking, and the high temperature generated by poor heat dissipation not only causes the equipment to run unstable, shorten the service life, and even burn out some parts. Therefore, heat dissipation is a bottleneck restricting the development of lightweight and high-performance devices. The current market mainly solves the heat dissipation problem of electronic components with fin heat dissipation. However, fin heat sinks are limited by volume and quality, and the heat dissipation efficiency is limited, and it is difficult to meet the heat dissipation requirements of high-power electronic components.
Thermal management is the core component of electronic product components, and has received more and more attention with the continuous improvement of assembly density and integration. There are many downstream applications of heat dissipation, including consumer electronics, automobiles, base stations, servers, and data centers, with a market space of hundreds of billions. According to the forecast of the Prospective Industry Research Institute, the compound annual growth rate of the heat dissipation industry will reach 8% from 2018 to 2023, and the market size is expected to grow from 149.7 billion yuan in 2018 to 219.9 billion yuan in 2023. 、
Mobile phone heat dissipation accounts for about 7% of the total scale of the heat dissipation industry. In 2018, it was about 10 billion yuan. Although the proportion is low, in the future, driven by the continuous upgrade of 5G smart terminals, the mobile phone cooling market is expected to maintain high growth, and the average annual compound growth rate from 2018 to 2022 is expected to reach 26%. In addition, the large-scale construction of 5G commercial base stations is also expected to drive the expansion of the heat dissipation market for semi-solid die-cast housings and inflatable plates. In terms of long-term development trends, with the increase in network traffic brought about by 5G, the server cooling market will continue to expand. In view of the seriousness of the heat dissipation problem, researchers applied heat dissipation coatings to the electronic field to solve the heat dissipation problem. General heat-dissipating coatings are based on polymers, and some metal fillers with good thermal conductivity are added, mainly including traditional gold, copper, aluminum, and some non-metallic fillers with high thermal conductivity such as aluminum nitride and silicon nitride. , Alumina, Magnesium Oxide, etc.
Because graphene has extremely high thermal conductivity and strong emissivity, the thermal conductivity can reach 5300 W/m·K, and the emissivity coefficient is above 0.95. Therefore, the graphene heat-dissipating paint prepared from graphene is painted on After the surface of the substrate, the thermal radiation coefficient of the substrate surface can be greatly increased (up to 0.9), and the heat exchange efficiency of the surface of the object can be greatly improved. At the same time, the graphene heat dissipation coating can quickly take away the heat from the surface of the substrate in the form of infrared radiation, improve the heat exchange effect, and reduce the surface and internal temperature of the object.
In addition to excellent radiation heat dissipation performance, graphene heat dissipation coatings also have excellent adhesion, good weather resistance and salt spray resistance, excellent temperature resistance, and rich use scenarios. They can be widely used in large-scale applications. Power LED radiator, CPU radiator, industrial equipment heat dissipation, auto parts heat dissipation and other fields.
Because filler graphene has good thermal conductivity, anti-corrosion and mechanical properties, our company can adjust and optimize the formulation according to the specific application scenarios and use needs of the coating, so as to maximize its heat dissipation, anti-corrosion and anti-corrosion properties in various coatings. Excellent performance such as wear resistance. The graphene material itself is non-toxic and harmless, and can reduce or replace the use of inorganic fillers in traditional coatings, enhance the heat dissipation effect and reduce costs. Graphene heat dissipation paint is suitable for spraying on magnesium alloy and aluminum alloy radiators to improve the heat dissipation effect of the radiator.
