The heat dissipation of 5G smart terminals is the key, and the market demand for heat dissipation materials has increased greatly!
With the rapid development of 5G, 5G mobile phone manufacturers have taken the lead in layout, and 5G mobile phone heat dissipation requirements continue to increase, and mobile phone heat dissipation materials continue to innovate and improve. According to the heat dissipation requirements of various components of the whole phone, different heat dissipation materials are used to solve the heat dissipation difficulties of mobile phones. Materials include graphite sheet, thermal conductive grease, VC soaking plate, etc. Today we will take a look at these heat dissipation materials.
Everyone knows that not only mobile phones, but various smart terminal products are constantly being updated. Thinner, thinner, smarter, and multifunctional have made power consumption higher and higher, and heat is getting bigger and bigger, especially in the 5G communication era. 5G high-power chips and the development of folding screens and full screens have caused the heat generation of terminal equipment to increase sharply. Studies have shown that when the temperature of electronic components increases by 2°C, their reliability decreases by about 10%. Heat dissipation becomes an urgent problem for smart terminals. Therefore, heat dissipation materials are constantly upgraded and iterated to meet higher heat dissipation requirements.
At present, the heat dissipation materials of common smart terminal products include thermally conductive graphite, thermally conductive interface material (TIM), heat pipe/VC soaking plate, graphene, etc.
The heat-dissipating graphite film is a very thin GTS, heat-conducting material with comprehensive properties, also known as thermally conductive graphite film, thermally conductive graphite sheet, graphite heat sink, etc. Due to its special hexagonal planar network structure crystal, graphite has better properties than aluminum and copper. And other metals have higher heat transfer efficiency.
Graphite film can be divided into natural graphite film and artificial graphite film. The natural graphite film is usually made of natural graphite as a raw material, which is first converted into expanded graphite, and then made into graphite film material; artificial graphite film is generally made of polyimide film through high-temperature carbonization and graphitization, which conducts heat The coefficient is higher and the flexibility is stronger.
Graphite has outstanding anisotropy and heat soaking performance, which can replace traditional aluminum or copper radiators, and can be used in intelligent, miniaturized, and integrated electronic devices, such as smart phones, ultra-thin laptops, tablet computers, 5G communication base station, wireless charging, etc.
The heat pipe uses the low boiling point characteristics of the liquid under high vacuum to quickly evaporate and absorb the heat, and then absorb the heat through the radiating fins or metal shell frame, and return to the liquid state through the capillary effect after cooling, completing the heat dissipation cycle.
The VC soaking plate is similar in principle to the heat pipe. It also uses the physical principle of water circulation for heat conduction and heat dissipation. The VC soaking plate is an extension of the heat pipe. The heat conduction extends from one dimension to two dimensions. The heat dissipation speed is faster than the heat dissipation performance of the heat pipe. Increased by 20%~30%. The heat pipe/heating plate can be applied to mobile phones, servers, data centers, 5G base stations, handheld high-end game consoles, etc.
In 2020, 5G will enter large-scale construction, and the coverage of 5G network will drive the growth of demand for smart terminal equipment. According to the forecast of market research organization IDC, it is expected that the Chinese market will have close to 100 million 5G smart terminal shipments in 2020, including 5G. Smartphones, tablets, notebooks, VR/AR and many other products, by 2023, the annual shipment of 5G terminal products will exceed 400 million units, and the market demand for heat dissipation materials will usher in a period of vigorous development.
