High density carbon fiber composite normally means material with density higher than 1.80g/cm3. CFCCARBON LTD can produce carbon fiber composite with density upto 1.90g/cm3 or 1.95g/cm3. This density is the limit for CFC composite material already. Because its almost the real density for graphite, which is only 2.2g/cm3, nobody can make it higher than 1.95g/cm3 in the world, and there is no such technics for now.
There are different names of the material: CFC, Carbon composite, C/C, carbon fiber composite, carbon carbon composite, carbon reinforced carbon, carbon fiber reinforced carbon, carbon carbon… but its the same material. its different from carbon fiber products. because the C/C composite material can withstand high temperature, but the carbon fiber products can not.
Our company can supply high density carbon fiber composite with stable and reliable quality. We can produce all kinds of High density CFC. with upto 1.9g/cm3 density. CVI , CVD or Pitch coke based processing. temperature: >2000C. Density: 3D, 4D upto 1.9g/cm3. as per customers’ requests.
We can also produce pitch coke based CFC composite, with density higher then 1.9g/cm3. Hoop structure.
Please see the data sheet of high density C/C composite with CVD/CVI process, with 3D structure :
| Specification | Requirements | Test results |
| Bulk density | 1.85 g/cm3 min | A1: 1.87g/cm3 |
| 1.85 g/cm3 min | A2: 1.87 g/cm3 | |
| 1.85 g/cm3 min | B1: 1.88 g/cm3 | |
| 1.85 g/cm3 min | B2: 1.87 g/cm3 | |
| Make of fibers | Four dimensions (4D) | Four dimensions (4D) |
| Tensile strength | X-Y: ≥130MpaZ:: ≥70Mpa | X-Y: 165MpaZ:: 78Mpa |
| Tensile Modulus | X-Y: ≥50GpaZ: ≥30Gpa | X-Y: 56GpaZ: 36Gpa |
| Flexural strength | X-Y: ≥120Mpa | X-Y: 139Mpa |
| Compressive strength | X-Y: ≥160MpaZ:: ≥220Mpa | X-Y: 164MpaZ:: 273Mpa |
| Thermal Conductivity | X-Y: ≥40 W/mkZ: ≥20W/mk 900°C | X-Y: 49 W/mkZ: 25W/mk 900°C |
| C.T.E （1000°C） | X-Y:0.5-1 ×10-6/KZ: 1-1.5 ×10-6/K | X-Y:0.62×10-6/KZ: 1.23×10-6/K |
| Porosity | 3-5% | 4.2% |
| Cp at RT-590°C | Report | X-Y:1.553 103J/(Kg.K)Z:1.635 103J/(Kg.K) |
| X-ray Inspection | No significant defects | No significant defects |
This is one order for our customer. and we have other customers require density of 1.90g/cm3 min. see bellow the hoop structure properties:
3D polar woven cylindrical carbon-carbon composite, pitch based:
Fiber volume percent: 40-45%
Fiber volume percent hoop: 45% ± 5
Fiber volume percent axial: 36% ± 4
Fiber volume percent radial: 19% ± 4
Bulk density: ≥ 1.9 (g/cm )
Tensile strength (hoop): ≥ 100 MPa
Tensile strength (axial): not tested MPa
Compressive strength (hoop): ≥ 80 MPa
Compressive strength (axial): ≥ 71 MPa
Thermal conductivity (hoop): ≥ 40 W/m.K at 900 °C
Thermal conductivity (axial): ≥ 22 W/m.K at 900 °C
Thermal expansion: < 3.1 1/ºC*10 -6
Open porosity: < 5%
Carbon Content: 99.9%
Graphitization Temperature: @ 2500 °C
Special Properties of carbon fiber composite: High Acid-resisting and alkali-resisting properties; Low density compared to metals; High temperature, cold-resistant, tensile strength is 7-9times than Steel; very good thermal shock resistance…
Note: We can do X-RAY tests and other tests.
We can produce with all shapes of High density CFC, as per customers’ special request.
Our Products were sold throughout the country and exported to Europe, America, Southeast Asia and other countries and regions which enjoy a high reputation all over the world. We hope to establish a good business relationship with you; we will serve you with the best quality, best delivery time and best solutions