Electromagnetic shielding material is a necessary protective functional material to prevent electronic pollution in the era of rapid development of electronic industry. The use of thermoplastic modified materials with EMI electromagnetic shielding function will not affect the sensitive electronic components in your product. These modified materials allow product designers more flexibility in product design. Thermoplastic modified materials with EMI electromagnetic shielding function can also be combined with wear resistance, flame retardant, dyeing and structural enhancement. Electromagnetic shielding is mainly used to prevent the influence of high frequency electromagnetic field, so as to effectively control the electromagnetic wave radiation from one region to another. The basic principle is that the shielding effect (SE) is use conductor materials with low resistance, reflecting electromagnetic wave on the shield surface, absorbing electromagnetic wave inside the conductor, and loss in transmission process.The basic principle is to use a low-resistance conductor material, and use the reflection of electromagnetic waves on the surface of the shield and the absorption inside the conductor, as well as the loss during transmission to produce a shielding effect, which is usually expressed in terms of shielding effectiveness (SE).

With the high integration and miniaturization of electronic and electrical components, the components of weak working circuit emit electromagnetic waves of different frequencies to the outside. The external electromagnetic waves are similar to the power of the control signal, which results in the obstruction of information transmission and electromagnetic interference. With the development of lightweight, plastic shell components replace metal shell, but plastic products are insulated, non-conductive, easy to accumulate charges, unable to reflect and absorb electromagnetic waves, no shielding ability. Plastics with electromagnetic shielding function can absorb electromagnetic radiation in a wide frequency band, and have the characteristics of high temperature resistance, corrosion resistance and climate resistance.

Main Classification of Electromagnetic Shielding Plastics:

Conductive coatings can be formed in complex shapes,with less equipment investment, low cost of research and development, simple and practical. The disadvantage is that the coatings and the coated parts have different thermal expansion coefficients with the increase of temperature, which makes the coatings easy to fall off. Electroless gold plating refers to electroplating a layer of metal on the plastic surface, which has excellent conductivity and is harmful to the environment.

NFD conductive plastic is a material that mixes conductive fillers with resin and has electromagnetic shielding effect through die-casting, injection molding, and extrusion molding. Common fillers include metal fibers, metal sheets, carbon fibers, superconducting carbon black, and metal alloys. NFD uses ultra-fine stainless steel fibers and graphene, graphite nickel-plated fibers, and superconducting carbon black as the main raw materials to prepare electromagnetic shielding plastics. Compared with other electromagnetic shielding plastics, it has more excellent electromagnetic shielding effects, mechanical properties, thermal properties, Physical properties and processing properties. In practical applications, the wave impedance is low, the reflection loss is small, the three-dimensional conductive network in the shielding material has high conductivity, strong absorption loss, and permeability is much higher than ordinary electromagnetic shielding plastics and conductive coating electromagnetic shielding plastics. Traditional magnesium aluminum alloys have high electrical conductivity, strong reflection, and low permeability. They are not as good as electromagnetic shielding plastics in absorbing electromagnetic waves in a wide frequency band.

The shielding effect of electromagnetic shielding material mainly lies in the merits and demerits of conductive fillers and the forming process. Using conductive fibers with large aspect ratio, it is easier for fibers to form conductive networks with high conductivity. Compared with ordinary fibers, NFD uses electromagnetic shielding plastics formed from Conductive fibre fabrics and resin materials, three-dimensional conductive network structures has high conductivity and thermal conductivity. It has excellent absorption effect in wide band,  can withstand strong pulse attack and protect electronic components from damage.

Electronic equipment

High-quality medical equipment

Communication instrument

Electronic/Microelectronic Components

Military project

Aerospace