This technology takes graphene as raw material and adopts a highly oriented thermal conductive film formed by stacking multiple graphene layers. It has the characteristics of good mechanical properties, high thermal conductivity, light weight, thin material and good flexibility.
It is worth mentioning that Huawei recently invested in Changzhou Fuen Technology to further deploy graphene technology. The latter's existing products include graphene thermal conductive film, graphene thermal conductive sheet and graphene foam film used by Huawei and Honor mobile phones. Graphene liquid cooling solution is a material provided by Fuene Technology.
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The improvement of heat dissipation performance of mobile phones provides an opportunity for the development of heat conductive materials. There are many heat dissipation schemes for mobile phones, including graphite sheet, graphite film, metal back plate, thermal conductive gel, liquid cooling technology (steam chamber) and so on. In the future, we will consider various combinations or develop more feasible methods.
With the wave of 5G mobile phone replacement and the arrival of the peak of base station construction, graphene is expected to rapidly expand its application in heat dissipation solutions for electronic equipment.
In terms of industrialization, graphene plays an important role in strategic frontier materials. Graphene is currently on the eve of scale, and the industry expects that the industrial application of graphene is expected to accelerate significantly. China plans to achieve the development goal of graphene industry. By 2020, the industrial scale will reach 10 billion, and by 2025, the overall industrial scale will reach 654.38+000 billion.
Graphene is a two-dimensional crystal stripped from graphite material, which consists of carbon atoms with only one atomic thickness. Because of its special structure, graphene has excellent mechanical properties, electromagnetic properties, thermal properties, light transmittance and magnetic permeability, which makes it a research hotspot in materials science and has application prospects in many fields.
Graphene is the thinnest material (0.34nm) and the strongest material in the world at present, with strength as high as 130GPa and excellent elasticity, and can be stretched to 120% of its own size.
Graphene has strong thermal conductivity. The thermal conductivity of single-layer graphene can reach 5000 W/m·K, which is three times that of pure diamond at room temperature and 12 times that of metallic copper. Graphene also has excellent light transmittance, with photon transmittance as high as 97.4% and theoretical specific surface area as high as 2630m2 g-1.
According to the data of Graphene Industry Alliance, in terms of patent technology sources, graphene patents in China have the highest priority, accounting for 66.6%, followed by South Korea, the United States and Japan, accounting for 12.3%, 9.7% and 3. 1% respectively. . China's graphene patents have been far ahead of other countries/regions.
The upstream of graphene includes resources, equipment and systems such as graphite. Downstream applications include thermal conductivity, electrical conductivity, flexible display screen and ink coating. In the intermediate process, graphene powder and graphene film have two product forms.
The speed and coverage of domestic policies are increasing, attracting a large amount of industrial capital to continue to invest in graphene-related research and commercial applications. At present, many graphene industrial parks and graphene alliances have been established in China.
Changzhou, Ningbo, Qingdao, Chongqing, Wuxi and other places have taken the lead in establishing graphene industrial parks, and Jiangsu, Inner Mongolia, Shandong and other places have also established graphene alliances, which is conducive to further integrating upstream and downstream resources and improving the industrial chain. Graphene innovation system promotes the development of graphene industry and is also conducive to national macro-control.
At the same time, various excellent graphene companies in China are constantly emerging. Although it is difficult for high-end products to achieve a large-scale breakthrough in a short time due to cost and technical problems, some low-end products have been commercialized in some companies.
The main products of domestic manufacturers Qingdao Haoxin and Tiannai Technology are graphene and carbon nanotube conductive agent. The main products of the sixth element are graphene powder and graphene film, and the main products of Sanshun Nano and Fangde Nano are carbon nanotube conductive agents.
The main customers of Qingdao Haoxin are BYD, Guo Xuan Hi-Tech, Dongguan xintaitong, Jiangxi Xi 'an Chi and Wuhu Tianyi. Tiannai Technology's customers include Contemporary Amperex Technology Co., Limited and BYD. The sixth largest customers are Daopeng Technology, Aiwang New Materials and Huaqi Electronics. The main customers of German Nano are Contemporary Amperex Technology Co., Limited, Jin Quan, BYD, Aerospace Power and Ganfeng Lithium Battery.
Since 20 12 "Twelfth Five-Year Plan" for new materials industry, China has gradually adopted various preferential policies to promote graphene industrialization, and the new "Thirteenth Five-Year Plan" has also been issued. Materials are also dominated by graphene. With the gradual clarification of the industrialization direction of graphene, graphene has become one of the key industries in China in the future.