All about Carbo Fiber


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All about Carbo Fiber

  1. 1. Presenter : Professor : S.Rohol Amin Isazadeh Dr.Mohammd Riahi
  2. 2.  Carbon fiber is defined as a fiber containing at least 92 wt % carbon, while the fiber containing at least 99 wt % carbon is
  3. 3.  Firstly manufactured by Mr.Edison in the 1879s by heating bambo.  Then manufactured by Dr. Roger Bacon in the 1985s by heating strands of rayon until they carbonized.  The first strong Carbon fibers were developed in the 1963s as a reinforcement for high-temperature molded plastic components on airplane engine.
  4. 4. Major raw materials polyacrylonitrile (PAN) and pitch .  Typical sequence of operations used to form carbon fibers from polyacrylonitrile (PAN):  ◦ ◦ ◦ ◦ ◦ Thermoset treatment Carbonizing Graphitizing Surface Treating Epoxy Sizing
  5. 5.  THERMOSET TREATMENT Fibers are stretched and heated to no more than 400° C. Cross-links carbon chains so that the fibers will not melt in subsequent treatments.  CARBONIZING fibers are heated to about 800° C in an oxygen free environment. removes non-carbon impurities.  GRAPHITIZING heats them to temperatures ranging from 1100° C to 3000° C. stretches the fibers between 50 to 100% elongation. The stretching ensures a preferred crystalline orientation.
  6. 6.  Surface Treating ● After carbonizing, the fibers have a surface that does not bond well with the epoxies and other materials used in composite materials. ● To give the fibers better bonding properties, their surface is slightly oxidized. ● provides » better chemical bonding properties . » better mechanical bonding properties. ● The surface treatment process must be carefully controlled to avoid forming tiny surface defects, such as pits, which could cause fiber failure.
  7. 7.  Epoxy Sizing ● Fibers are coated to protect them from damage during winding or weaving. This process is called sizing. ● Typical coating materials include epoxy, polyester, nylon, and others. ● The coated fibers are wound onto cylinders called spools. ● The spools are loaded into a spinning machine and the fibers are twisted into yarns of various sizes.
  8. 8.  High tensile and compressive strength.  Low thermal expansion.  Electrically and thermally conductive.  Light weight and low density.  High abrasion and wear resistance.  Long service life.
  9. 9.  The main disadvantage of carbon fiber is its cost.  This fiber will cause some forms of cancer of the lungs.
  10. 10. Carbon Fiber is actually 5 times stronger than steel.  It is also 2 times more stiff.  This material has a really very strength-toweight ratio, which makes it great for almost anything that requires high strength and low weight. 
  11. 11.           Aerospace and Aircraft Industry. Rechargeable batteries and fuel cell electrodes. Energy production; windmill blades. Building and construction materials. Fiber reinforced plastics, FRP. Sports equipments. Automotive parts. Civil Engineering. Portable power. Acoustics.
  12. 12. Musical Instruments Air Craft Mobile Case Car Parts
  13. 13. Wind Turbine Blades Helmets
  14. 14.  The future efforts on carbon fiber research will be focused on cost reduction and property improvement.
  15. 15. • Moving towards large production series cars. • Wind turbines, compressed natural gas storage and transportation fuel cells. • Light weight pre-cast concrete, earthquake protection. • Deep sea drilling platforms, choke and drill pipes.
  16. 16. It revolutionized the field of light weight materials. The new substitute for metals. In short it is the future manufacturing material.
  17. 17.         
  18. 18. B.M.W