In the 5G era, the demand for thermal film for electronic products increases, and the development of graphene thermal film blowout.
Oct 18,2024
Enray
High temperature will have a serious impact on most components, making the performance of most electronic components change or even fail, resulting in the failure of the entire electronic equipment. On the one hand, electronic componentsThe "10 ℃ rule" shows that the failure rate of electronic components increases exponentially with the increase of working temperature, and the reliability of the system decreases by 50% for every 10 ℃ increase in temperature. On the other hand, thermal failure is the main reason for the failure of electronic equipment, and 55% of the failure of electronic equipment is caused by high temperature. Electronic equipment will continue to generate heat during operation and accumulate in the body, so it is very important to apply heat dissipation means inside the electronic equipment to keep the equipment at the right temperature.
to5G mobile phones, for example, functional innovation leads to increased power consumption and increased cooling requirements. The main heat sources are processors, batteries, cameras and LED modules. 5G mobile phones need to support more frequency bands and realize more complex functions. The number of antennas is doubled, the RF front end is increased, and the performance of processors is improved. At the same time, smart phones are upgraded to large-screen folding screens, multi-camera high-definition camera upgrades, and high-power fast charging upgrades, making the functional modules integrated in the mobile phones more and more compact.
5G mobile phone chip power consumption of about 11W, about 2.5 times that of 4G mobile phones, thermal demand is strong. At present, the thermal materials widely used in 4G are graphite sheets, thermal interface materials, etc., subject to the limit of its thermal conductivity, it has been difficult to meet the needs of 5G mobile phones.
Graphene (Graphene) is a two-dimensional carbon nanomaterial with hexagonal honeycomb lattice composed of carbon atoms in sp² hybrid orbitals separated from graphite by micromechanical exfoliation method in 2004. The perfect structure of graphene gives it material properties such as super conductivity, good thermal conductivity, good light transmittance, high flexibility and high strength, and is widely used in the fields of new energy batteries, coatings, flexible screens and sensors. The upstream of graphene is graphite, and the downstream application is mainly divided into two aspects: one is graphene powder, which is mostly doped in other materials, and is mostly used in the field of coatings and new energy batteries; the other is graphene film, which is transparent., Conductivity, good flexibility and other advantages, it is widely used in the fields of heat dissipation materials, flexible displays and sensors, and has a good development prospect.
In 2018, Huawei's mate20 X mobile phone adopted a heat dissipation system combining graphene heat dissipation film and liquid cooling heat sink for the first time, while Apple's iPhone XS Max mobile phone motherboard introduced in the same year adopted a three-layer superimposed packaging technology, using a combination of regular graphite heat dissipation film and metal frame to dissipate heat. Samsung Note 9 was equipped with a water-carbon cooling heat dissipation system, I .e. a combination of water-storing copper heat pipe and carbon fiber TIM (thermal interface material) to dissipate heat dissipation. Measured data show that the heat dissipation effect of Huawei's mate20 X mobile phone is far better than that of the other two mobile phones. In the 5G mobile phones released in the first quarter of 2020, OPPO, Xiaomi, vivo, Samsung, ZTE and other brands still use VC all-hot plate ultra-thin heat pipe for heat dissipation, but Huawei insists on using graphene heat dissipation film for heat dissipation and extends its application to tablet computers, at present, Huawei Mate 20 X to Mate 30 Pro to Huawei P40 series and Huawei MatePad Pro 5G tablet computers all use graphene cooling technology; Xiaomi 10, released in February 2020, uses a three-dimensional cooling scheme of graphene cooling film/VC/multi-layer graphite sheet.
With the continuous change and progress of smart phone cooling technology, graphene cooling film technology is in.The 5G era has gradually become the mainstream cooling technology. With the rise of mobile phone flexibility, foldable trend, graphene thermal film with its excellent thermal conductivity and flexibility, will be with the future development of 5G smart phones in many thermal technology solutions to stand out, ushered in high-speed development.
Hunan enrui professional custom high temperaturegraphitization furnaceEquipment.
Related News