What Are The Commonly Used Shielding Adhesive Materials?

With the development of functional industries such as electronics, technology, and communication, we need to use shielding adhesive materials in many products. While ensuring product connectivity, we also need to have shielding effects; Do you know what are the commonly used shielding adhesive materials?
According to the editor's understanding, five types of shielding adhesive materials have been sorted out. As follows:
1. Aluminum foil tape
2. Copper foil tape
3. Conductive cloth tape
4. Conductive non-woven tape
5. Absorbing materials
The shielding effects of these five materials are sorted in ascending order, and of course, their costs also increase in order. Let's take a look at the specific situation of various shielding adhesive materials together!
The main reason why copper foil tape and aluminum foil tape can shield electromagnetic signals is that they form a closed shielding chamber with the surrounding metal; Aluminum foil or copper foil can form continuous conductivity with metal, so they generally need to prepare conductive adhesive, otherwise the shielding effect will be much worse. Under normal circumstances, copper foil/aluminum foil with conductive adhesive can reach 90dB or more, while copper foil/aluminum foil with non-conductive adhesive can only reach about 40dB. These two types of shielding tapes are mainly used in the conductive shielding of electronic products.
The conductive cloth is made of copper nickel alloy, and the back adhesive is usually conductive adhesive. The shielding efficiency is generally 66.6DB. The conductive tape combines the softness of the cloth with the high conductivity of the conductive medium, making it suitable for many electronic products such as plasma TVs, LCD displays, mobile phones, laptops, desktop computers, PDAs, MP3, MP4, etc. Especially in today's trend towards miniaturization and ultra-thin electronic products, the application of conductive tape in consumer electronics is very common.
Conductive non-woven fabric, also known as conductive non-woven fabric, is a type of electrical fabric that does not require spinning. It simply orients or randomly supports conductive fibers to form a woven network structure, which is then reinforced by mechanical, thermal adhesive, or chemical methods. The surface color is generally gray. The surface resistance value is usually maintained below 0.05 ohms, which is suitable for electronic components with high conductivity requirements and can provide shielding effect. Mainly used for conductive fixation and shielding of electronic devices.