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. Il est également couramment en usage pour les câbles domestiques, les câbles de données informatiques, etc.
Plastiques conducteurs
Les matériaux plastiques conducteurs sont similaires aux revêtements conducteurs. Ils permettent également de recouvrir la surface du câble d’une couche de matériau conducteur pour le blindage électromagnétique. SO, le noir de carbone représente un matériau couramment utilisés pour les plastiques conducteurs. Of course, il peut également se préparer à l’aide de matériaux tels que des poudres métalliques hautement conductrices.
Mousse conductrice
La mousse conductrice est un matériau de blindage de câble léger. Elle est généralement faite de mousse composée d’un matériau conducteur. 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. Les polymères conducteurs sont largement utilisés dans les câbles de communication, les câbles automobiles, les câbles aérospatiaux, etc.
Matériau de blindage en métal
Matériaux de blindage métallique
Le matériau de blindage métallique est un matériau de blindage de câble traditionnel. Et il est généralement constitué d’un treillis métallique, d’un ruban de cuivre, d’une feuille d’aluminium, d’une feuille de cuivre, d’un fil de cuivre étamé, etc. Ces matériaux de blindage métallique offrent une bonne protection contre les ondes électromagnétiques et peuvent efficacement bloquer les interférences des champs électromagnétiques externes. 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, les câbles automobiles, 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, mais elle est plus épaisse et offre une protection supplémentaire. Les matériaux couramment utilisés pour les feuilles métalliques de blindage comprennent la feuille d’aluminium ou la feuille de cuivre plaqué.
Matériaux de blindage en alliage
Les matériaux de blindage en alliage sont des matériaux composés de différents métaux, tels que le cuivre, l’aluminium et le nickel. Ils sont généralement fabriqués à partir d’alliages tels que l’alliage cuivre-nickel, l’alliage argent-cuivre, etc. Les matériaux de blindage en alliage offrent une bonne conductivité électrique et une bonne flexibilité, ainsi qu’une excellente protection contre les ondes électromagnétiques. 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.