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Introduction of graphite paper

What is graphite paper

Graphite paper is made of high carbon flake graphite through chemical treatment and high temperature expansion rolling. Its appearance is smooth, without obvious bubbles, cracks, wrinkles, scratches, impurities and other defects.

It is the base material for the manufacture of various graphite seals. It is widely used in dynamic and static sealing of machines, pipes, pumps and valves in electric power, petroleum, chemical, instrumentation, machinery, diamond and other industries. It is an ideal new sealing material to replace traditional seals such as rubber, fluoroplastics and asbestos.

1.Classification

The specification of graphite paper mainly depends on its thickness. It with different specifications and thicknesses has different uses. Generally, there are specifications such as 0.05mm~3mm, and the thickness below 0.1mm can be called ultra-thin graphite paper.

It is divided into flexible graphite paper, ultra-thin graphite paper, sealed graphite paper, thermally conductive graphite paper, conductive graphite paper, etc. Different types of graphite paper can play their due roles in different industrial fields.

It mainly uses expanded graphite as raw material. After a series of processing techniques, graphite powder is pressed and rolled into flexible and thin paper-like graphite products.

2.Cutting

At present, most manufacturers of graphite paper cutting on the market in China use circular diamond wire saws for cutting. Below the graphite paper cutting video for reference:

 

3.Uses

It is widely used in dynamic and static sealing of machines, pipes, pumps and valves in electric power, petroleum, chemical, instrumentation, machinery, diamond and other industries. It is an ideal new sealing material to replace traditional seals such as rubber, fluoroplastics and asbestos.

The main uses application technology: used in notebook computers, flat panel displays, digital cameras, mobile phones and personal assistant devices.

4.Development

With the acceleration of the upgrading of electronic products and the growing demand for heat dissipation management of mini, high-integration and high-performance electronic devices, a new new technology for heat dissipation of electronic products has also been launched, that is, a new solution of graphite material heat dissipation.

This new natural graphite solution utilizes it for high heat dissipation efficiency, small footprint, light weight, and uniform heat conduction in both directions, eliminating “hot spots” and improving the performance of consumer electronics while shielding heat sources and components.

 5.Characteristics

1. Ease of processing: It can be die-cut into different sizes, shapes and thicknesses, and die-cut flat boards can be provided, and the thickness can range from 0.05 to 1.5m.

2. High temperature resistance: the maximum temperature of graphite paper can reach 400℃, and the minimum can be lower than -40℃.

3. High thermal conductivity: The maximum in-plane thermal conductivity of graphite paper can reach 1500W/mK, and the thermal resistance is 40% lower than that of aluminum and 20% lower than that of copper.

4. Flexibility: Graphite paper can be easily made into laminates with metal, insulating layer or double-sided tape, which increases design flexibility and can have adhesive on the back.

5. Lightness and thinness: Graphite paper is 30% lighter than aluminum of the same size and 80% lighter than copper.

6. Ease of use: The graphite heat sink can be smoothly attached to any flat and curved surface.

According to these six characteristics, it can be processed into graphite products such as flexible graphite packing rings, flexible graphite plates, graphite gaskets, and graphite washers.

6. When storing graphite paper, pay attention to the following two matters:

1. Storage environment: It is more suitable to be placed in a dry and flat place, and it is not exposed to the sun to prevent it from being squeezed. During the production process, it can reduce collisions; it has a certain degree of conductivity, so when it needs to be stored, it should be kept away from the power source. electric wire.

2. Prevent breakage: It is very soft in texture, we can cut it according to the requirements, in order to prevent them from breaking during storage, it is not suitable for folding or bending and folding at a small angle. The general graphite paper products are suitable for cutting into sheets, for example: rolled into barrels or A4 paper for flat storage.

With the acceleration of the upgrading of electronic products and the growing demand for heat dissipation management of mini, high-integration and high-performance electronic devices, a new new technology for heat dissipation of electronic products has also been launched, that is, a new solution for graphite material heat dissipation.

This new natural graphite solution utilizes it for high heat dissipation efficiency, small footprint, light weight, and uniform heat conduction in both directions, eliminating “hot spots” and improving the performance of consumer electronics while shielding heat sources and components.


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