Zhengzhou Protech Technology Co., Ltd
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email info@lab-furnace.com
Zhengzhou Protech Technology Co., Ltd
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Graphite felt

Graphite felt


Description:Graphite felt is using polyamide membrane sintering into the new diaphragm material, with high thermal conductivity and excellent product design flexibility.

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Advantage of Graphite Felt
1. High heat transfer efficiency: The thermal conductivity of synthetic graphite sheet is 800-1500w/mk (highest specification series thermal conductivity is 5 times that of copper,which is 8.3 times that of aluminum)
2. Easy processing: A flexible diaphragm, easy cutting and processing into any shape and can be repeated bending 
3. Light weight density: Synthetic graphite sheet 1.6-2.1g/cm3 (About 1/3 of the aluminum and equivalent to 1/5-1/4 of the copper)
4. Low resistant: Can be used for electromagnetic shielding.
Certification of Graphite Felt
 Our products have passed the ISO9000 certification, CE certification, all products are in accordance with ISO9000:2000 quality management.Our diversity of products, to meet all kinds of consumer demand.
Application of Graphite Felt
Mainly used as insulation in high-vacuum and inert atmosphere furnaces. This kind of high-vacuum is widely used for metal heat treatment, meticulous and ceramic sintering, different kinds of crystallization production, sintering silicon for semiconductors.
1. Power conversion, power supply equipment and the surrounding equipment;
2. Large communications equipment and peripheral equipment;
3. Computers, tablet computers, smart phone, smart terminal, high-power LED applications;
4. PV power generation equipment and peripherals;
5. Other special industries.


Technology of Graphite Felt 
Trademark Rayon-based
Carbon Felt
Graphite Felt
Carbon Felt
Graphite Felt
Bulk  density  g/cm 3 0.10-0.12 0.08-0.10 0.14-0.15 0.12-0.14
Carbon  % ≥98.5 ≥99 ≥98.5 ≥99
Thermal conductivity
1150 o C W/m .k
0.08-0.15 0.06-0.14 0.12-0.18 0.08-0.14
Tensile Strength (Mpa) 0.13 0.1 0.15 0.14
Crushing stress at 10% compression N/cm 2 6-10 5-8 8-12 8-10
Ash  % ≤0.05 ≤0.005 ≤0.05 ≤0.005
Processing temperature 1200 o C 2300 o C 1200 o C 2300 o C
Operating Condition in the air ≤400 o C ≤400 o C ≤400 o C ≤400 o C
in the vacuum ≥1500 o C ≥2300 o C ≥1500 o C ≥2300 o C
In the inert atmosphere ≥2300 o C ≥3300 o C ≥2300 o C ≥3300 o C
Spec length (m) 16 - 18 9 - 12
Wide (mm) 1000-1300
Thickness (mm) 3,5,8,10,12

Our Other High Temperature Material
No Product name Applications
1 Ceramic fiber blanket Thermal insulation for spaceflight, steel plant, petrochemical plant, 
military equipment, high temperature pipelines, electrical components; 
Lining of industrial furnaces, heating equipment; 
also used to make high temperature gasket, module and collapse block.
2 Ceramic fiber board Lining of cement kiln and other architectural furnaces and kilns; 
lining of industrial furnaces and kilns in petrochemical, metallurgy, ceramic, glass, heat treatment, nonferrous metals field; lining of high-temperature reaction and heating equipment.
3 Ceramic fiber rope Sealing and thermal insulation of door, flue, brick expansion gap of industrial 
furnaces and kilns; sealing and packing of burner, heat ex-changer, high temperature pipeline of industrial furnaces and kilns.
4 Ceramic fiber paper Thermal insulation, sealing, electric insulation, sound absorption, 
filter in high temperature environment.
5 Ceramic fiber cotton Lining of industrial furnaces and kilns, boiler; thermal insulation in thermal equipment like steam engine, gas engine; flexible thermal insulation material for high temperature pipeline, thermal reactor; high temperature gasket; high temperature filter; fireproofing of industrial furnaces and kilns, electrical components; thermal insulation of incinerator, investment casting; also used to make module and collapse block, veneering modules.
6 Ceramic fiber cloth Thermal insulation of industrial furnaces and kilns, high temperature pipeline and container, engine and instrument; fireproofing equipment and thermal cover; fire-proof suit; sound absorption; substitute of asbestos cloth.
7 Ceramic fiber module Lining of industrial furnaces and kilns in petrochemical, metallurgy, ceramic, 
glass, heat treatment field.

Transaction process

  After-sales Service

1.We provide one year warranty for our equipment (Except the quick-wear part),Equipment damage or malfunction during the guarantee period due to equipment quality reasons, all be free maintenance.After the warranty expires, still offer lifetime and high quality service.

2.In case of failure in the process of equipment used, our company will make a deal as soon as possible, to ensure the normal operation of equipment.

3.Our company provide free equipment operation training and simple troubleshooting and maintenance training.

4.My company's technical staff can provide door-to-door service (product installation, debugging, maintenance, technical advice and instructions, etc.).

5.Our company provides transport services, packaging are carried out in accordance with the safety standard packing.Random complete technical data (user manual, maintenance manuals, relevant materials and accessories, random tools, etc.).

6.All the equipment has the CE certificate.

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