MAIN PROCESSING METHODS OF GRAPHITE SHEET

With the characteristics of ultra-high thermal conductivity, low thermal resistance and light weight, thermal conductive graphite sheet is a very popular high thermal conductivity material in recent years. Graphite can conduct uniform heat conduction in two directions, so as to realize the function of rapid thermal diffusion. It can also shield heat sources and components and improve the performance of consumer electronic products. At present, it can be divided into two types: artificial graphite sheets and natural graphite sheets.

At present, the main application fields of graphite sheet are IC, MOS, LCD-TV, notebook computer, communication equipment, wireless switch, router, smart phone and other industries.

Because graphite sheets are easy to break, poor toughness, etc., graphite sheets need to be processed when they are applied to thermally conductive materials. The current main processing methods include:

1. Adhesive processing:

Mainly in order to better adhere to the IC and electronic component circuit boards, it is necessary to carry out the adhesive processing on the surface of the thermal conductive graphite sheet, which can be divided into two types: double-sided adhesive and single-sided adhesive.

2. Film processing:

Because some electronic products need insulation and heat insulation in circuit design, and the graphite sheet itself is electrically conductive, at this time, the surface of the graphite sheet needs to be covered with PET film to achieve product performance optimization.

3. Edging processing:

Graphite in the die-cutting process, the edge of the powder is easy to drop, so most of the application process of heat-conducting graphite sheet needs to be edge covering.