EMI Shielding Spray Paint
EMI Shielding Spray Paint – Spray Coating System – Cheersonic
Electromagnetic shielding coating is a kind of functional coating that incorporates conductive particles into organic resin and can be sprayed on non-metallic substrates such as composite materials, engineering plastics, wood, and cement surfaces. It has the advantages of curing at room temperature and strong adhesion. It is the easiest way to deal with electromagnetic shielding of non-metallic shells such as military equipment or household appliances. The biggest advantage of electromagnetic shielding coatings is low cost, simple and practical, and widely applicable. Foreign advanced developed countries, especially the United States, the United Kingdom, Japan and other countries have formed an electromagnetic shielding coating industry of various categories and series of specifications, and the products have been applied on a large scale. At the end of the last century, there were more than 50 companies producing shielding coatings in the United States, and their annual sales were increasing at an annual rate of 50%. The products of traditional electromagnetic shielding coatings are mainly divided into four types: silver series, copper series, nickel series and carbon series. The advantage of metal shielding coatings is high shielding performance, but the disadvantage is high density (coating surface density is greater than 200g/m2). Poor corrosion resistance (salt spray resistance for 48h), while carbon electromagnetic shielding coatings mainly use carbon black and carbon fiber as fillers. , Although the density is small, the conductivity is not high, and it is difficult to apply to the occasions with high shielding performance requirements. Throughout the research situation at home and abroad, electromagnetic shielding coatings are developing in the direction of low cost, nanometer, broadband, and corrosion resistance.
The preparation method of ultrasonic electromagnetic shielding coating uses non-metallic components as the application object. Through breakthroughs in graphene surface modification, graphene conductive network structure design and other key technologies, it solves the problem of agglomeration of stone blackene and gives full play to the high conductivity of graphene. Developed a lightweight, long-lasting, serialized electromagnetic shielding coating material based on high-conductivity graphene functional fillers. After being applied to weapons and equipment, it can not only effectively improve the electromagnetic protection capability of the equipment, but also meet the needs of lightweight equipment , It can also significantly reduce the electromagnetic radiation of civil electronic products.
