Introduction to the material of die-cutting graphite sheets for heat dissipation materials

Graphite sheet is a novel die-cutting material for heat conduction and dissipation, which conducts heat uniformly in two directions, shields heat sources and components, and simultaneously enhances the performance of consumer electronic products.

I. Overview of Graphite Sheets:

With the accelerated upgrading of electronic products and the growing demand for thermal management in miniaturized, highly integrated, and high-performance electronic devices, this new natural graphite solution offers high thermal efficiency, small footprint, and lightweight. It conducts heat uniformly in both directions, eliminating "hot spot" areas, shielding heat sources and components, and simultaneously improving the performance of consumer electronic products.

II. Main applications of graphite sheets:

1. Applied to laptops, high-power LED lighting, flat panel displays, digital cameras, mobile phones, etc.; product characteristics: the surface can be combined with other materials such as metal, plastic, adhesive, etc. to meet more design functions and needs.

2. Die-cutting principle of graphite sheet heat dissipation material: A typical thermal management system consists of an external cooling device, a heat sink, and a thermal interface. The important function of the heat sink is to create the largest effective surface area, where heat is transferred and carried away by an external cooling medium.

3. Graphite heat sinks effectively transfer heat by distributing it evenly on a two-dimensional plane, ensuring that precision die-cut components operate within their tolerable temperature range. With an excellent thermal conductivity of 150-1200W/m.k, they outperform metals in heat conduction.   

4. Lightweight, with a specific gravity of only 1.0 to 1.3. Soft and easy to handle. Thickness: 0.012-1.0mm. Adhesive layer: 0.03mm. Ultra-thin 0.012mm. Heat conduction coefficient: Planar conduction 300-1200W/m.k. Vertical conduction 20-30 W/m.k. Temperature resistance: 400℃. Low thermal resistance and lightweight. Low thermal resistance: 40% lower than aluminum and 20% lower than copper. Lightweight: 25% lighter than aluminum and 75% lighter than copper.

III. Physical Parameter Table of Graphite Sheets:

test project

test method

unit

3K-SBP test value

Color (颜色)

Visual

black

Material (材质)

Natural graphite

Thickness

ASTM D374

Mm

0.03-2.0

Specific Gravity

ASTM D792

g/cm

1.5-1.8

Temperature tolerance range Continuous use Temp

EN344

℃

-40~+400

tensile strength

Tensil Strength

ASTM F-152

4900kpa

715PS

volume resistance

Volume Resistivity

ASTM D257

Ω/CM

3.0*10

Hardness

ASTM D2240

Shore A

>80

Flame Rating

UL 94

V-0

Thermal conductivity (vertical direction)

ASTM D5470

w/m-k

twenty-five

Thermal conductivity (horizontal direction)

ASTM D5470

w/m-k

500-1200

   Graphite heat sinks can smoothly adhere to any flat and curved surfaces, and can be cut into any shape according to customer needs.