E-Mail:sales@czgraphite.com
Tel:+86 15533739372
Heat Resistance: Carbon-carbon composites can withstand temperatures up to 3000°C (5432°F) without significant degradation. This makes them ideal for use in aerospace, rocket engines, and brake systems where extreme heat is common.
Thermal Stability: These composites retain their strength and structural integrity at elevated temperatures, unlike metals or polymers that may weaken or deform.
High Strength-to-Weight Ratio: Carbon-carbon composites are lightweight yet extremely strong, offering a remarkable strength-to-weight ratio. This makes them ideal for applications where minimizing weight is crucial, such as in aerospace and high-performance vehicles.
Compressive Strength: They have good compressive strength, making them effective in resisting forces that push the material together.
Impact Resistance: They are tough and resistant to impact, though they can be brittle under certain conditions.
Carbon-carbon composites are relatively light compared to metals, giving them a low density while maintaining excellent mechanical properties. This is a key factor for aerospace applications, where weight reduction is essential for fuel efficiency and performance.
Friction Resistance: These composites are highly resistant to wear and friction, making them ideal for brake systems and other applications where surfaces experience repeated rubbing or high contact stress.
Long Service Life: Due to their high wear resistance, carbon-carbon composites typically have a long lifespan in high-performance applications, especially in high-temperature environments.
Low to Moderate Thermal Conductivity: Carbon-carbon composites generally have low to moderate thermal conductivity compared to metals, making them effective as heat insulators. However, thermal conductivity can vary depending on the fiber alignment and the amount of porosity within the matrix.
Chemical Stability: Carbon-carbon composites are highly resistant to corrosion, unlike metals, which can degrade over time due to environmental factors like moisture and salt.
Oxidation Resistance: Although carbon is susceptible to oxidation, the use of special coatings or operating in controlled atmospheres (e.g., vacuum or inert gases) helps prevent oxidation at high temperatures.
Good Electrical Conductivity: Carbon-carbon composites exhibit good electrical conductivity, making them useful in applications where electrical properties are needed, such as in certain aerospace or defense applications.
Carbon-carbon composites are resistant to creep, meaning they do not deform under long-term stress or high temperatures, which is critical for parts exposed to constant pressure or thermal loads for extended periods.
Brittleness: Although they are strong and tough, carbon-carbon composites can be brittle under certain conditions, particularly under sudden or high-impact loads.
Fracture Toughness: The material is somewhat prone to cracking if subjected to sharp, localized stresses, especially if there are manufacturing defects or internal voids in the structure.
Resistance to Fatigue: Carbon-carbon composites are highly resistant to fatigue, meaning they can withstand repeated cycles of stress or strain without significant damage, making them ideal for applications that involve cyclic loading, such as turbine blades or braking systems.
These composites have relatively high damping capabilities, meaning they can absorb and dissipate energy from vibrations or shock loads, which is beneficial for components in high-stress environments.
Anisotropic Material: The properties of carbon-carbon composites depend heavily on the orientation of the carbon fibers. If the fibers are aligned in one direction, the material will exhibit high strength and stiffness in that direction, but its performance may be less in other directions. However, when woven or laid out in multiple orientations, the material can be designed to provide balanced strength and resistance in all directions.
Recycling Challenges: Carbon-carbon composites are difficult to recycle due to their high-temperature processing and the carbon matrix, though research into sustainable practices is ongoing.
Environmental Resistance: They can endure harsh environmental conditions like extreme temperatures, oxidative environments, and chemical exposure without significant degradation, reducing maintenance needs.
Densification and Processing: Carbon-carbon composites often require a complex and labor-intensive production process, including the pyrolysis of precursor materials and multiple densification steps to ensure a dense, well-bonded structure.
Customization: Because of the manufacturing process, carbon-carbon composites can be tailored to meet the specific mechanical and thermal needs of the application.
Characteristics
1. High Strength: Carbon fiber has extremely high tensile strength, providing excellent structural strength for the parts manufactured.
2. High modulus: Carbon fiber has a high stiffness and modulus of elasticity, making the material less prone to deformation and bending when subjected to force.
3. Lightweight: Carbon fiber has a very low density, lighter than metallic aluminum, which helps to achieve lightweight products.
4. Corrosion resistance: good stability to acid, alkali and other chemicals, able to resist corrosion and extend the service life.
5. High Temperature Resistance: It can maintain good performance under high temperature conditions and is suitable for high temperature working environment.
In terms of application, the deposited laminated carbon fiber material is widely used in the following fields due to its excellent performance mentioned above.
Aerospace: Used in the manufacture of aircraft and spacecraft components, such as fuselage, wings, etc., to meet the demand for light weight and high strength.Automotive industry: used in the manufacture of automotive drive shafts, leaf springs, frames, brake pads and other components, as well as the body and chassis, to achieve automotive lightweight and enhance vehicle performance.
Sporting Goods: Used in the manufacture of golf club bodies, bicycle frames, fishing rods, etc., the use of carbon fiber lightweight and high strength characteristics to improve the performance of sports equipment.
In addition, deposited laminated carbon fiber materials are also used in marine engineering, racing car manufacturing and other fields that require lightweight and high strength. The main products are monocrystalline furnace, polycrystalline furnace cover plate, top plate, gasket, high temperature furnace inner guard plate, sintering pallets, etc..
Rational Performance Index
| Products |
CFC |
| Grades | Laminated |
| Bulk Density（g/cm³） | 1.2-1.5 |
| Carbon Content（%） | ≥98.5-99.9 |
|
Bending Strength（MPa） |
100~150 |
|
Tensile Strength（MPa） |
90~130 |
| Bending Strength（MPa） | 100-200 |
| Interlayer Shear Strength（MPa） | ≥13 |
|
Compressive Strength（MPa） |
130~170 |
| Tensile Modulus（GPa） | 25~35 |
| Coefficient of Linear Expansion（10-6/K） |
0.3~1.2 |
| Resistivity（μΩ·k） |
30~43 |
| Heat Conductivity（W/m·k） | 10-30 |
| Ash（PPM） | ≤65 |
|
Processing Temperature（℃） |
2400 |
Note
The entire chemical vapor deposition furnace deposition, imported Toray carbon fiber yarn T700 pre-woven body three-dimensional needle punching knitting method, the thickness can be done 25mm.
Characteristics
Excellent Mechanical Properties: carbon fiber itself has the characteristics of high strength and high modulus, which makes the 2.5D braided composite material excellent in mechanical properties and able to withstand large loads and stresses.
Light weight: Compared with metal materials, carbon fiber braided materials have lower density, so they are lighter in weight, which helps to realize lightweight design of products.
Strong designability: 2.5D braiding technology allows fibers to intertwine in three dimensions to form a more complex structure, a structure that allows for greater flexibility in the design and manufacturing process of the material, which can be customized to meet specific needs.
Improved impact resistance: Through 2.5D braiding technology, composites are able to better disperse and absorb impact energy, thus improving the impact resistance of the material.
High interlaminar strength: Compared with traditional plywood composites, 2.5D woven composites enhance interlaminar bonding through the interweaving effect of fibers, which improves interlaminar strength and avoids interlaminar separation and spalling.
In terms of application, 2.5D carbon fiber braided materials are mainly used in.
Aerospace field: due to its lightweight and high strength characteristics, 2.5D carbon fiber braided materials are widely used in structural components of aerospace vehicles such as aircraft, rockets and satellites, such as hatches, body structures, engine fan magazines, etc.
Automobile manufacturing field: In automobile manufacturing, 2.5D carbon fiber woven materials can be used to manufacture key components such as body and chassis to achieve lightweight design of automobiles and improve fuel efficiency and driving performance.
Other fields: In addition, 2.5D carbon fiber braided materials can be used in sports equipment, photovoltaic thermal field, brake discs and other fields, to give full play to its lightweight and high strength, corrosion resistance, high temperature resistance and other excellent performance.
The main products are screw nut for fixing, monocrystalline furnace inner pot holder, monocrystalline heater, monocrystalline deflector, heat preservation cylinder, polycrystalline top plate, polycrystalline furnace cover, hot pressing mold jacket, impeller rod and so on.
Physical and chemical performance index
Grades
2.5D
Density (g/cm³)
1.5~1.8
Bending Strength (MPa)
120~180
Tensile Strength (MPa)
100~140
Interlayer Shear Strength (MPa)
10~15
Z-Direction Compression Strength (MPa)
120~150
XY Direction Compression Strength (MPa)
180~250
Tensile Modulus (GPa)
25~35
Coefficient of Linear Expansion (10-6/K)
0.5~1.3
Resistivity (μΩ-k)
15~40
Thermal Conductivity （W/m·k）
30-50
Ash (PPM)
≤100
Note
Carbon carbon composite material has designability, customized according to the customer's use of the environment, in a certain direction to make the technical indicators higher. To meet the customer's needs.
Characteristics
High strength, low density, lightweight: this composite material combines the high strength and lightweight properties of carbon fiber, making it possible to achieve a lightweight design while maintaining high strength, which is essential for improving the performance of vehicles such as airplanes and automobiles.
Highly designable: Due to the various anisotropic properties of carbon fibers, their strength is particularly high along the direction of the fibers. Therefore, composites can be tailored to meet specific performance needs based on the direction of forces in the use scenario.
High temperature resistance: compared to metallic materials or aluminum alloys, carbon fiber composites have a much lower degree of mechanical property degradation at high temperatures, giving them better stability in high temperature environments.
Good safety: This composite material has good impact resistance and is highly safe as a molded part, protecting users and equipment to a certain extent.
Good fatigue resistance: after repeated stress, carbon fiber composites can still maintain their strength, which is another major advantage.
In terms of application, 3D deposited carbon fiber composites are mainly used in.
Aerospace field: due to its characteristics of high strength, low density and high temperature resistance, this composite material is widely used to make structural parts of aerospace vehicles such as airplanes and satellites to improve the performance and reliability of the vehicles.
Automobile manufacturing field: the lightweight and high strength characteristics of carbon fiber composites make them widely used in automobile manufacturing, such as for the manufacture of body, chassis and other key components to achieve lightweight design of automobiles and improve fuel efficiency.
Thermal field of electronic equipment: With the rapid development of electronic technology, the power of electronic components is getting higher and higher, and the requirements for heat dissipation performance are also getting higher and higher.
3D deposited carbon fiber composites can form a continuous thermal conductivity pathway, which has a significant effect on the thermal conductivity enhancement of composites, and therefore is widely used in the field of heat dissipation of electronic equipment.
Carbon-carbon composites are materials made by combining carbon fibers with a carbon matrix. The carbon fibers are typically woven or aligned, and the matrix is often created through a high-temperature process known as pyrolysis, which converts a precursor material like pitch or resin into carbon. The result is a material that is lightweight, strong, and heat-resistant.
High Strength-to-Weight Ratio: Carbon-carbon composites are strong yet lightweight, making them ideal for aerospace and high-performance applications. High Temperature Resistance: They can withstand extremely high temperatures, often up to 3000°C, without losing their structural integrity, making them useful in environments like jet engines, rocket nozzles, and braking systems for aircraft. Durability and Toughness: Carbon-carbon composites have excellent wear resistance and can endure fatigue and impact better than metals in many cases. Corrosion Resistance: Unlike metals, carbon-carbon composites are resistant to corrosion from environmental factors, making them suitable for harsh conditions.
Aerospace: Components like rocket nozzles, heat shields, and turbine blades. Automotive: High-performance brake discs in sports cars and race cars (e.g., carbon-carbon brake rotors). Defense and Military: Lightweight armor and other high-performance applications. Industrial Applications: Tools and parts used in extreme environments, such as furnaces and high-temperature processing equipment.
The process generally involves: Fiber Preform Creation: Carbon fibers are woven into a specific pattern, or they can be aligned in a desired direction. Impregnation with Precursor Material: The fiber preform is impregnated with a resin or polymer precursor. Pyrolysis: The impregnated fibers are heated in an oxygen-free environment (a process called pyrolysis) at high temperatures, transforming the matrix into carbon and fusing it with the carbon fibers. The material can then undergo further processing, such as densification (to fill in gaps and pores) and heat treatment, to enhance its properties.
While the terms "carbon composite" and "carbon-carbon" are often used interchangeably, carbon-carbon composites are specifically characterized by having a carbon matrix, as opposed to other composites that might use materials like polymers or ceramics as matrices. Carbon-carbon composites are more specialized, typically designed for extreme temperature and stress conditions.
Cost: The production process is expensive, especially due to the high temperatures involved in the pyrolysis step. Brittleness: While carbon-carbon composites are tough and resistant to wear, they can be brittle and prone to cracking under certain stresses. Complex Manufacturing: The process of making carbon-carbon composites is labor-intensive and requires specialized equipment, making scaling up production difficult.
Recycling carbon-carbon composites is challenging. Since they are made of carbon fibers and carbon matrices, recycling often involves breaking down the material through high temperatures or chemical processes. However, the recycling of carbon-carbon composites is still an emerging field with limited infrastructure and techniques.
Matrix Material: Carbon-carbon composites have a carbon matrix, while CFRP uses a polymer matrix (typically epoxy or vinyl ester). High-Temperature Performance: Carbon-carbon composites excel at high temperatures, whereas CFRPs are often limited to temperatures below 250-300°C. Applications: CFRPs are more commonly used in applications where weight reduction and moderate strength are essential (e.g., automotive and sporting goods), while carbon-carbon composites are typically reserved for extreme conditions, such as aerospace and high-performance braking systems.
Russian