Time：2021-04-09 Edit：小編Number hits：261
2020 is known as the first year of 5g. Under the background of accelerating the construction of 5g network, many cities in China are accelerating their layout and embracing 5g in an all-round way.
5g network is a multi network, multi band, multi standard hybrid network, the relative 4G spectrum efficiency will be significantly improved, the higher performance of 5g network also put forward higher requirements for equipment manufacturing, especially in the electromagnetic interference (EMI) caused by electromagnetic waves, 5g electromagnetic interference is more serious, and the requirements for electromagnetic shielding are more stringent.
When the electronic equipment is working, the radiated electromagnetic wave will often cause interference to the outside world, which is called electromagnetic interference, also known as EMI (electromagnetic interference).
Electromagnetic shielding glue is a kind of shielding means using the properties of electromagnetic wave. Its principle is to use electromagnetic shielding glue to make a circle of glue around a certain area of space to form a closed loop, so as to cut off the transmission path of electromagnetic wave, weaken the field strength caused by some sources, and eliminate electromagnetic interference. In many ways to solve the problem of electromagnetic interference, electromagnetic shielding glue is the most basic and effective.
At present, the mainstream electromagnetic shielding material in the market is conductive silicone rubber, and the conductive fillers are generally silver, copper, nickel powder, graphite and some conductive compounds.
The conductive silver adhesive has the best conductivity and electromagnetic shielding effect, but it is expensive. The conductivity of conductive silver adhesive is related to the amount of silver powder, and the higher the silver content is, the more conductive it is. Eca48 conductive silver adhesive of cemedine brand in Japan contains 70% silver and has excellent conductivity. It is used for electromagnetic shielding applications in high-end market, such as high-end mobile phone camera module, etc.
Electromagnetic interference will not only cause interference and damage to the components of electronic equipment, affect their normal work, but also pollute the environment and endanger human health. Therefore, the research on electromagnetic shielding adhesive will never change in the 5g era.
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