Views: 0 Author: Site Editor Publish Time: 2026-08-04 Origin: Site
Natural graphite sheets are special because they have layers of carbon. These layers give the sheets amazing properties. The sheets are important in materials that control heat. They help devices get rid of heat well. In- conductivity is between 100 and 350 Wm−1K−1. Through- conductivity is from 2 to 6 Wm−1K−1. If you press the sheets, conductivity can go up by more than 100%. Engineers use these properties to keep electronics cool and safe.
Natural graphite sheets have layers of carbon. These layers give them strength and let them bend. This special structure helps them move heat and electricity well.
Graphite sheets are very good at moving heat. This makes them great for cooling things like phones and laptops. They can move heat faster than 1500 W/mK.
When graphite sheets are denser, they get stronger and move heat better. Engineers should pick denser sheets for tough jobs that need more heat control.
DASEN's graphite sheets are very pure and can be made in many ways. This makes them good for many uses, like electronics, cars, and s.
Tests like the Light Flash Method check if graphite sheets are high quality. These tests help engineers pick the best materials for their work.
Natural graphite sheet is different because it has layers of carbon. Each layer has carbon atoms in flat shapes. The layers sit on top of each other. This makes the material strong and bendy. The layers can slide because weak forces hold them together. This makes the sheet feel slippery. It can bend without breaking.
Scientists use special tools to look at the layers. The table below shows what they learn:
Evidence Type | Description |
|---|---|
Raman Spectroscopy | No D peak means the graphite is good quality. The 2D band fit shows AB stacking. |
High-Resolution TEM | The atoms look neat and have no problems. AB stacking shows up in patterns. |
Interlayer Distance | The space between layers is about 0.338 nanometers. This matches AB-stacked graphite. |
This structure gives the sheet great strength and flexibility. It also helps heat and electricity move through it.
The graphite sheet has many important features. These features help in lots of industries. They include how well it moves heat and electricity, how much it grows with heat, and how heavy it is. The table below shows some values:
Property | Value Range |
|---|---|
Through- thermal conductivity | 2 Wm⁻¹K⁻¹ to 6 Wm⁻¹K⁻¹ |
In- thermal conductivity | 100 Wm⁻¹K⁻¹ to 350 Wm⁻¹K⁻¹ |
Through- electrical conductivity | 3 Scm⁻¹ to 25 Scm⁻¹ |
In- electrical conductivity | 500 Scm⁻¹ to 1700 Scm⁻¹ |
Density influence on conductivities | Conductivity gets better with more density |
Coefficient of thermal expansion (in-) | -0.6×10⁻⁶K⁻¹ to -1.4×10⁻⁶K⁻¹ |
Coefficient of thermal expansion (through-) | 10×10⁻⁶K⁻¹ to 33×10⁻⁶K⁻¹ |
The graphite sheet moves heat well along the layers.
It also moves electricity better than many materials.
The layers let the sheet grow or shrink in different ways.
If the sheet is denser, these features get even better.
Note: The special layers and features of natural graphite sheet make it great for keeping electronics cool and safe.
DASEN makes natural graphite sheets that are very pure. The sheets have 99.7% carbon. They come from Jiangxi, China. The brand name is DSN. DASEN sells industrial-grade sheets that meet tough rules. The sheets help devices lose heat. Each sheet is 25 micrometers thick. The density is more than 2 grams per cubic centimeter. Thermal conductivity is between 1400 and 1600 watts per meter-kelvin. This means the sheet moves heat really well. The color is black gray. The shape and size can be what the customer wants. DASEN lets people buy just one square meter.
Feature | Details |
|---|---|
C Content (%) | 99.7% |
Place of Origin | Jiangxi, China |
Model Number | DSN5000 |
Brand Name | DSN |
Application | Heat dissipation |
Grade | Industrial Grade |
Product name | Graphite sheet |
Material | High Pure Graphite |
Thickness | 25um |
1400~1600 w/mk | |
Density | >2g/cm3 |
Color | Black Gray |
Shape | Shape Requested |
Size | Size Requested |
MOQ | 1 SQM |
DASEN’s graphite sheets work well for electronics, energy, and medical devices. The products help keep things cool and safe.
DASEN uses new technology to make graphite sheets. The company follows ISO9001 quality rules. Workers use machines to press and shape the sheets. The process keeps the carbon layers neat and strong. DASEN checks every step to keep the sheets pure and the thickness the same. The workshop is over 10,000 square meters. It can make lots of sheets. DASEN makes up to 6 million square meters each year. The company has more than ten patents. The team checks each sheet before sending it out. Customers get products that meet strict rules.
DASEN works hard to make new and good products. The company’s skill makes sure every graphite sheet works well in tough jobs.
Natural graphite sheets have a special structure. The layers stack in a neat pattern. Each layer has carbon atoms in flat sheets. The space between layers is about 0.335 to 0.337 nanometers. This close stacking makes the sheet strong and hard to bend. Scientists learned that the structure changes how heat and electricity move. If the layers stay neat, the sheet works better for heat and electricity.
The table below shows how changing the layer pattern can make properties better:
Property | Before TEG Addition | After TEG Addition | Improvement |
|---|---|---|---|
Electrical Conductivity | 10−15 S cm−1 | 10−5 S cm−1 | Increased by 10^10 |
Thermal Stability | 340 °C | 480 °C | Increased by 140 °C |
Mechanical Strength | N/A | Increased by >30% | N/A |
Sheets with low density have more space between layers. This can make conductivity and strength lower. When the structure gets tighter, the sheet becomes stronger and works better.
Compaction changes how dense and strong graphite sheets are. When pressure goes up, density gets higher. This makes the layers closer and helps conductivity. The table below shows how pressure changes density:
Pressure (MPa) | Density (g cm−3) |
|---|---|
31 | 1.73 |
200 | 1.89 |
0.5 | 0.5 - 1.7 |
0.55 | 20 MPa (tangent modulus) |
1.05 | 50 MPa (tangent modulus) |
1.54 | 170 MPa (tangent modulus) |
1.7 | 220 MPa (tangent modulus) |
Graphite sheets with low density are not as strong. When compaction goes up, density gets close to 2.26 g/cm³. This higher density helps the sheet handle more pressure and makes conductivity better. The structure gets more stable and works well for tough jobs.
Tip: Engineers pick graphite sheets with higher density for stronger properties and better heat control.
Common values for natural graphite sheets are:
Density is between 1.8 and 2.26 g/cm³, based on compaction and holes.
Space between layers stays near 0.335–0.337 nm.
Surface area is from 1.5 to 8.0 m²/g.
Lithium capacity can reach about 372 mAh/g.
The structure and density of graphite sheets are very important. Low density sheets are good for lighter uses. High density sheets are stronger and conduct heat and electricity better.
Thermal conductivity means how well something moves heat. Natural graphite sheets move heat really well. The carbon layers let heat travel fast along the sheet. This helps devices stay cool and safe. Engineers use graphite sheets in electronics for this reason.
The way heat moves depends on the direction. Heat goes much faster along the layers than across them. In- thermal conductivity is between 100 and 350 Wm⁻¹K⁻¹. Through- thermal conductivity is between 2 and 6 Wm⁻¹K⁻¹. This big difference is why people use graphite sheets for heat control.
Tip: Graphite sheets are great for cooling phones, computers, and batteries because they move heat so well.
Electrical conductivity means how well something lets electricity flow. Graphite sheets are good at this because of their carbon layers. Electricity moves better along the layers than across them. This helps in things like sensors and energy storage.
The table below shows the values for electrical conductivity in natural graphite sheets:
Conductivity Type | Range (Wm⁻¹K⁻¹) | Range (Scm⁻¹) |
|---|---|---|
Through- | 2 to 6 | 3 to 25 |
In- | 100 to 350 | 500 to 1700 |
These numbers show graphite sheets can handle both heat and electricity well. Engineers use these features to make better products.
Thermal expansion means how much something grows or shrinks with heat or cold. Graphite sheets are special here. The sheet expands differently along the layers and across them. In- thermal expansion is very low, and sometimes it is even negative. This means the sheet stays steady when it gets hot. Through- thermal expansion is higher, so the sheet grows more in that way.
Low thermal expansion helps graphite sheets keep their shape in hot devices. This protects electronics from heat damage.
Emissivity tells how well something gives off heat as infrared radiation. Graphite sheets have a medium emissivity value. This helps them send heat into the air, which is good for cooling.
The table below shows the usual emissivity value for graphite:
Material | Emissivity |
|---|---|
Graphite | 0.42 |
A value of 0.42 means graphite sheets can give off heat well. This helps them work in heat management systems.
Anisotropy means a material acts differently in different directions. Graphite sheets show strong anisotropy. The sheet moves heat and electricity much better along the layers than across them. Scientists use special tools to measure anisotropy. They look at the shape and direction of the carbon particles. X-ray analysis shows the layers line up in one main direction. Kearns parameters help measure how much the properties change with direction.
Anisotropy makes graphite sheets useful for engineers. They can control how heat and electricity move in a device. This helps designers make products that stay cool and work well.
Note: The special properties of graphite sheets, like thermal conductivity, electrical conductivity, and anisotropy, make them important for today’s technology.
Engineers use tests to check graphite sheet properties. These tests show how well sheets move heat and electricity. For thermal conductivity, they use the Light Flash Method or the Transient Plane Source method. The Light Flash Method uses a tool called NETZSCH LFA467. This tool checks how fast heat moves along the sheet. The Transient Plane Source method uses the Hot Disk TPS 2500S. It can test both across and along the sheet. These tests give important data for studying materials.
Electrical conductivity tests use special tools too. The same methods can check how electricity moves in different ways. The table below lists the main ways to test conductivity in graphite sheets:
Method | Equipment Used | Measurement Direction |
|---|---|---|
Light Flash Method | NETZSCH LFA467 | In- |
Transient Plane Source | Hot Disk TPS 2500S | In- and through- |
Testing is very important for factories. Companies must know the exact properties of each sheet. This helps them pick the right material for every job.
Thermal expansion tests show how much a graphite sheet changes size with heat or cold. Engineers use a tool called a dilatometer for this test. The dilatometer heats the sample and measures its size change. This helps them see if the sheet will stay stable in different temperatures.
To check emissivity, engineers use infrared cameras or spectrometers. These tools show how well the sheet gives off heat as infrared energy. Knowing emissivity helps design better cooling systems.
Measuring these properties carefully makes sure graphite sheets work well in real products. Good data helps make safer and better designs.
Electronics need materials to move heat away fast. Graphite sheet helps keep devices cool. Phones, laptops, and LED lights use graphite sheet to spread heat. This protects devices and makes them last longer. Engineers pick graphite sheet because it moves heat and electricity well. It moves heat quickly along the layers. This is important for battery packs and control units in electric cars. Graphite sheet can transfer heat at rates over 1500 W/mK. Devices stay safe and work better.
Evidence Description | Key Points |
|---|---|
Different ways to make graphite sheets | Methods include compression molding, rolling, and heat treatment for anisotropic properties. |
Using graphite heat spreaders in electronics | Important for getting rid of heat in devices. |
Making natural graphite heat spreaders with thermal vias | Helps fix low through-thickness thermal conductivity problems. |
Graphite sheet is used more in electronics to cool phones and computers.
In electric cars, graphite sheet spreads heat fast and helps batteries stay cool.
Industries need materials that handle heat and pressure well. Graphite sheet is used in factories, energy storage, and transportation. The need for light and strong materials has grown by 36%. Flexible graphite sheet is used for battery insulation and heat dissipation in electric cars. This helps the industry move toward greener travel. Renewable energy uses graphite sheet for high-efficiency thermal interface materials. There has been a 32% rise in flexible graphite sheets with multi-directional reinforcement. These sheets help seal machines and improve thermal performance.
Electric car battery insulation and heat dissipation have gone up by 30%.
Need for thermal interface materials in renewable energy has increased by 26%.
Making new graphite-based products has grown by 34%.
DASEN gives graphite sheet solutions to many industries. The company helps electronics, energy, cars, space, and wearables. DASEN’s graphite sheet has high thermal conductivity and electrical conductivity. It is light and reliable. DASEN’s products make batteries and supercapacitors safer and more efficient. In cars, DASEN’s graphite sheet controls heat in engines and electronic parts. This lowers fuel use and boosts performance. Aerospace companies use DASEN’s graphite sheet for thermal management. Wearable devices stay cool and last longer with DASEN’s products.
Industry | Application Description | Benefits |
|---|---|---|
Electronics | Used in smartphones, laptops, LED lights, and battery packs. | High thermal conductivity, lightweight, reliable. |
Energy Storage | Makes batteries and supercapacitors work better. | Improves safety and efficiency. |
Automotive | Controls heat in engines and electronic parts. | Lowers fuel use and boosts performance. |
Aerospace | Gives thermal management for different parts. | Light and good at getting rid of heat. |
Wearables | Keeps devices cool and helps them last longer. | Makes devices stronger and work better. |
DASEN’s graphite sheet helps many industries solve heat and energy problems. The products support modern technology and improve thermal performance.
Natural graphite sheet is special in today’s technology because of its layers. DASEN’s sheets move heat well and bend easily. They also do not stop heat much. Many companies like these sheets because they can be pressed and last a long time. The table below shows how DASEN’s graphite sheets help in different jobs:
Application Area | Benefit |
|---|---|
Electronics | Efficient heat dissipation |
Industrial Equipment | Reliable performance and easy customization |
Chemical Industry | Effective sealing solutions |
Compact Electronics | Design freedom with thin constructions |
DASEN makes light and useful sheets for electronics, batteries, and LED lights.
Picking DASEN means you get good quality and new ideas for heat control.
If you want to know more, DASEN has experts who can help and make special products for you.
DASEN uses new technology and checks quality carefully. The sheets are very pure and move heat well. The company has special rights for inventions and follows ISO9001 rules. Customers get products they can trust for many jobs.
Engineers use tools like the Light Flash Method and Transient Plane Source method. These tests show how quickly heat travels through the sheet. Good results help people pick the right material for their needs.
DASEN lets customers pick the size and shape they want. People can ask for sheets that fit their devices. The company allows small orders, starting with just one square meter.
Many industries use DASEN’s graphite sheets. They are in electronics, energy storage, cars, s, and medical devices. The sheets help control heat and make things safer.
Most DASEN graphite sheets are about 25 micrometers thick. This thin size makes them easy to use in small devices and helps move heat well.