Cable shielding material is a material used to protect cables. It mainly plays the role of shielding against interference. It can effectively reduce electromagnetic interference during cable transmission and improve the quality and speed of power transmission.
Types of shielding materials
Conductive shielding material
Conductive coating
Conductive coating is a commonly used shielding material in cables. This is a method of applying a conductive material to the outer sheath of the cable. This allows a thin film to form on the outer surface of the cable. This thin film helps to partially suppress radiation and electromagnetic interference, thus ensuring a shielding effect. Commonly used materials for conductive coating include copper, aluminum or silver, often in the form of aluminum foil, galvanized steel strip, etc. These materials offer good electrical conductivity, which helps reduce external interference. Conductive coatings are generally used to cover low voltage cables. The conductive coating material is characterized by its low cost and ease of construction. It is also commonly used for domestic cables, IT data cables, etc.
Plastic conductors
Conductive plastic materials are similar to conductive coverings. They also cover the surface of the cable with a driver's layer of material for electromagnetic armor. SO, carbon black represents a material commonly used for conductive plastics. Of course, It can also be prepared using materials such as highly conductive metal powders.
Driver
The conductive foam is a light cable shielding material. It is generally made of foam made up of a driver's material. The conductive foam can form an electromagnetic shielding layer on the outer sheath of the cable. The advantages of conductive foam lie in its lightness, its flexibility, its ease of use and its excellent electrical conductivity properties. Conductive foam is able to well isolate interference from external electromagnetic waves and is suitable for applications such as mobile communications equipment, data lines, etc.
Conductive coating
Conductive coatings are a new type of shielding material for cables. And it is a coating made from conductive materials, usually a mixture of conductive particles and resin. Conductive coatings exhibit good conductivity and adhesion properties. They can be effectively applied to the outer surface of cables to form a uniform conductive shielding film, which effectively blocks interference from external electromagnetic fields.
Conductive polymers
Conductive polymers Conductive polymers are polymer materials with electrical conductivity properties, which allows them to effectively filter interference from high frequency electromagnetic waves. Conductive polymers are widely used in communication cables, Automotive cables, Aerospace cables, etc.
Metal shielding material
Metal shielding materials
Metal shielding material is a traditional cable shielding material. And it is generally made up of a metal trellis, of a copper ribbon, aluminum leaf, of a copper sheet, a tinned copper wire, etc. These materials of metal shield offer good protection against electromagnetic waves and can effectively block interference from external electromagnetic fields. They are often used for shielding from high-frequency electromagnetic wave interference and are suitable for high-frequency and communications cables. Metallic shielding materials are widely used in a variety of applications, including communication cables, electronic equipment, Automotive cables, medical instruments, etc.
Copper foil shielding material is a material made of thin copper foil. Copper foil has excellent electrical conductivity and shielding properties against electromagnetic waves.
Copper Foil Shielding Materials
Copper foil shielding materials are made from thin copper foils and provide excellent electrical conductivity and electromagnetic wave shielding properties. They are commonly used in low voltage cables, communications cables and internal computer cables.
Metal sheath
Metallic sheath is a shielding material used for high voltage cables. It is made of metals such as copper, aluminum or steel. The metal sheath is wrapped around the cable to form a metal shield. This can effectively reduce interference from external electromagnetic waves. Metal conduits are generally used in high voltage transmission lines and underground cables.
Metal braiding
Metal braiding is an effective shielding material because it creates a complete electromagnetic shielding environment around the cable, effectively protecting internal electronic components. Braided metal shielding is usually prepared from silver-plated copper wire or stainless steel wire.
Metal foil shielding
Shielding metal foil is similar to conductive coating, But it is thicker and offers additional protection. Materials commonly used for shielding metal sheets include aluminum sheet or plated copper sheet.
Alloy shielding materials
Alloy shielding materials are materials made up of different metals, such as copper, aluminum and nickel. They are generally made from alloys such as copper-nickel alloy, Silver Cuivre alloy, etc. Alloy shielding materials offer good electrical conductivity and good flexibility, as well as excellent protection against electromagnetic waves. And their malleability and processing capacity are also improved, making them suitable for a variety of cable structures and usage environments. What's more, they have good resistance to oxidation and corrosion, and do not age easily when used for a long term. They therefore constitute stable and reliable cable shielding materials. Alloy shielding materials are generally used in medium and high voltage cables and communication cables.
Others
Fiber Felt Shielding Material
Resin shielding material is a material used to protect cables from external electromagnetic interference. Resin shielding materials are usually coated on the cable jacket. It gives the cable good resistance to abrasion and good chemical stability. Resin shielding is commonly used in low and medium voltage cables and communication cables.
Shield Braid Material
Shield braiding material is made from braided metal wire or wire, which allows the cable to benefit from a good shielding effect. And this material is widely used in cable manufacturing, especially in high frequency cables.
Shield ring material
Ring shield material is a ring-shaped shield material that can be applied to the exterior of a cable to provide shielding. Shield ring materials are mainly used for power cables and underground cables.
Shield ring material is mainly used for power cables and underground cables.
Different types of cable shielding materials have different characteristics and applications. Choosing an appropriate shielding material helps protect the cable from external interference. This makes energy transmission more reliable and efficient.
Applications
Electrical cables
When transporting electricity at high voltage, electrical cables are susceptible to disruption by external electromagnetic interference. To ensure the stability and security of energy transmission, Metallic shielding materials are usually added to the exterior of power cables. And for example, copper sheets, aluminum sheets, etc. This allows for shielding and isolation of electromagnetic waves..
Data cables
In modern society, the use of various data cables is widespread, such as USB cables, HDMI cables, etc. To ensure the stability and high speed of data transmission, conductive foam materials, conductive coating materials, etc. are usually added outside the data cable. This allows for shielding and isolation of electromagnetic waves..
Cable shielding is an essential technology in the electrical industry. It effectively protects the electronic components inside the cable.
In practice, it is necessary to choose appropriate shielding materials and technology according to different industrial environments and cable types. SO, only in this way can a good electromagnetic shielding effect be achieved.
ZMS is committed to producing various types of high-quality cables. With more than 30 years of experience in cable manufacturing, ZMS produces a wide range of cables, especially shielded cables, XLPE insulated cables, rubber insulated cables, etc. If you don't know how to choose the right shielding material or cable, you can contact us.