Application direction of Mesophase Pitch-based Carbon Fiber (1) - Field of Carbon/Carbon and Carbon/Ceramic Composites
Application direction of Mesophase Pitch-based Carbon Fiber (1) - Field of
Carbon/Carbon and Carbon/Ceramic Composites
1. About Mesophase Pitch-based Carbon Fibers
Mesophase pitch-based carbon fiber (MPCF) is processed by a series of
processes such as spinning, oxidation,
carbonization, and
graphitization,using mesophase pitch, a material that is easy to graphitize, as a
precursor. The lamellar macromolecules composed of carbon elements are
aligned along the fiber axis, and the fibers are in a highly graphitized
state, showing excellent macroscopic properties such as high modulus, high
thermal conductivity, electrical conductivity, electromagnetic shielding,
damping, and low thermal expansion coefficient. The modulus can reach more
than 900GPa, and the thermal conductivity can reach 1200w/m﹒k or more.
As a reinforcing material, MPCF endows the composite material with high mechanical properties, and the parts are not prone to brittle cracking, breakage, deformation and other problems under harsh conditions such as high temperature and high pressure;
The thermal conductivity of MPCF is greater than 1200W/m﹒K, the thermal conductivity of the processed carbon/carbon composite material is greater than 700W/m﹒K;
The thermal expansion coefficient of MPCF is low, and the overall expansion coefficient of the composite material can be close to 0 through reasonable design;
The ash content of MPCF is close to 0, which avoids the interference of impurity elements on the process, and can produce high-purity, large-size silicon crystals;
The product forms are diversified, which can meet the needs of different processes and application scenarios.
2. Typical applications of MPCF carbon/carbon and carbon/ceramic composites
Monocrystalline silicon/polycrystalline silicon smelting furnace
Aircraft and heavy duty equipment brake pads
solid rocket motor nozzle
launch vehicle throat liner
Large-area thin-plate structure for spacecraft
Hypersonic vehicle hot end components
Thermal field material
Aircraft and heavy duty equipment brake pads
Rocket Throat Liner
Mesophase pitch-based carbon fiber integrates many characteristics such as light weight, high modulus, high strength, high thermal conductivity, electrical conductivity, electromagnetic shielding, low thermal expansion coefficient, and strong process designability, and will become a key material in many fields. Material core competitiveness.