Carbon-carbon composites use the strength and modulus of carbon fibers, reinforcing the carbon matrix to withstand harsh extreme environments. Pyrocarbon, coke residues of thermosetting resins or oil pitch are used as a matrix, high-strength carbon fibers - filaments (continuous and chopped), bundles, fabrics, spatial fiber structures are used as filler fibers.
Advantages of Carbon composite products:
Thermal conductivity 1050 ° С
Пластина, диск 1000*1000
U-образное изделие (60*40*60)
L-образное изделие (65*65)
PAN-based soft graphite felt
It is made on the basis of carbon felt from PAN fiber, which is subjected to a graphitization process.
Properties of soft graphite felt on a PAN basis:
Viscose-based soft graphite felt
It is made from viscose based on carbon fiber, which was first subjected to carbonization (at a temperature of 600-800 ° C), and then graphitization (at a temperature of 1500 to 2200 ° C).
Properties of soft graphite felt based on viscose::
5 , 10 , 12
To improve the thermal insulation properties, hard carbon felt is reinforced with carbon cloth and laminated with graphlex (graphite foil), which provides heat reflection to the inside of the furnace, and also serves as an obstacle for convection of hot gases. The resulting material undergoes a graphitization process.
Properties of hard graphite felt:
RFA, MFA, RFAC, RFACC, MFAC, MFACC
Standard plate size
A graphite felt cylinder is formed by combining graphite paper, carbon fiber and carbon fabric, which subsequently undergo subsequent high-temperature cleaning treatment.
Screen and tooling properties:
Given the specific operating conditions of the product, in practice, a combination of various technological methods with high-temperature processing in an inert medium or vacuum is carried out, which allows you to change the structure of the material and adjust the pore volume. The strength of a carbonized carbon-carbon composite is proportional to density. Graphitization of a carbonized carbon-carbon composite material increases its strength.
Application fields for carbon-carbon composite materials and graphite:
Metallurgical industry: for the production of molds, for hot pressing of refractory metals and alloys.
Engineering: as bearings for friction units and o-rings, etc.
Nuclear power engineering: due to the high radiation resistance, products from carbon-carbon composite materials are used for core assemblies of high-temperature gas-cooled reactors, up to the use as core materials, etc.
Medicine: for the manufacture of reinforcing plates for joining bones in fractures, the manufacture of heart valves, implant teeth, hinge joints.
Electrical engineering: in high-temperature vacuum and gas-filled furnaces as a lining and thermal insulation, as heaters of various sizes during work associated with the release of corrosive metal vapors, as an insulating material in growth equipment, etc. This is not a complete list of the using areas of products from carbon-carbon composite materials and graphite, the possibilities of their application are very wide and constantly replenished.
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