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carbon fibre

carbon fibre

sheshir
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carbon fibre

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  1. Carbon fiber

  2. Prepared By : Prepared By : Mazadul Hasan sheshir ID: 2010000400008 13thBatch (session 2009-2013) Department : Wet Processing Technology Email: mazadulhasan@yahoo.com Blog : www. Textilelab.blogspot.com (visit) Southeast University Department Of Textile Engineering I/A 251,252 Tejgaon Dhaka Bangladesh ©right

  3. My assignment contains….. 1) What is Carbon Fiber ? 2) Structure and properties of cotton fibre 3) Formation of carbon fibre 4) Applications of carbon fibre 5) Manufacturers of carbon fibers 6) Carbon fibre business 7) The effect of carbon fibre

  4. What is Carbon Fiber? Carbon fiber is composed of carbon atoms bonded together to form a long chain. The fibers are extremely stiff, strong, and light, and are used in many processes to create excellent building materials. Carbon fiber material comes in a variety of "raw" building-blocks, including yarns, uni-directional, weaves, braids, and several others, which are in turn used to create compositeparts.

  5. Carbon Fiber Twill Weave Plain Carbon Fiber Weave

  6. Structure and properties of cotton fibre Each carbon filament thread is a bundle of many thousand carbon filaments. A single such filament is a thin tube with a diameter of 5–8 micrometers and consists almost exclusively of carbon. The earliest generation of carbon fibers (e.g. T300, HTA and AS4) had diameters of 7–8 micrometers. Later fibers (e.g. IM6 or IM600) have diameters that are approximately 5 micrometers. The atomic structure of carbon fiber is similar to that of graphite, consisting carbon atoms (graphene regular hexagonal pattern. The difference lies in the way these sheets interlock. Graphite is a crystalline material in which the sheets are stacked parallel to one another in regular fashion. of sheets of a sheets) arranged in

  7. Structure of carbon fibre

  8. Formation of carbon fibre The raw material used to make carbon fiber is called the precursor. About 90% of the carbon fibers produced are made from polyacrylonitrile (PAN). The remaining 10% are made from rayon or petroleum pitch. All of these materials are organic polymers, characterized by long strings of molecules bound together by carbon atoms. The exact composition of each precursor varies from one company to another and is generally considered a trade secret. During the manufacturing process, a variety of gases and liquids are used. Some of these materials are designed to react with the fiber to achieve a specific effect. Other materials are designed not to react or to prevent certain reactions with the fiber. As with the precursors, the exact compositions of many of these process materials are considered trade secrets. The process for making carbon fibers is part chemical and part mechanical. The precursor is drawn into long strands or fibers and then heated to a very high temperature with-out allowing it to come in contact with oxygen. Without oxygen, the fiber cannot burn. Instead, the high temperature causes the atoms in the fiber to vibrate violently until most of the non-carbon atoms are expelled. This process is called carbonization and leaves a fiber composed of long, tightly inter-locked chains of carbon atoms with onlya few non-carbon atoms remaining.

  9. Applications of carbon fibre  Carbon fiber is most notably used to reinforce composite materials, particularly the class of materials known as carbon fiber or graphite reinforced polymers. Non-polymer materials can also be used as the matrix for carbon fibers. metal carbides and corrosion considerations, carbon has seen limited success inmetal matrix composite applications. Reinforced carbon- carbon (RCC) consists of carbon fiber-reinforced graphite, and is used structurally in high-temperature applications. The fiber also finds use in filtration of high-temperature gases, as an electrode with high surface area and impeccable corrosion resistance, and as an anti- static component. Molding a thin layer of carbon fibers significantly improves fire resistance of polymers or thermoset composites because a dense, compact layerof carbon fibersefficiently reflects heat. Due to the formation of

  10. The global demand on carbon fiber composites was valued at roughly US$10.8 billion in 2009, which declined 8–10% from the previous year. It is expected to reach US$13.2 billion by 2012 and to increase to US$18.6 billion by 2015 with an annual growth rate of 7% or more. Strongest demands come from aircraft & aerospace, wind energy, automotive industrywith optimized resin systems. as well as from the

  11. Application of carbon fibre

  12. Manufacturers of carbon fibers Major include Hexcel, SGL Carbon, Toho Tenax, Tora Industries and Zoltek. Manufacturers typically make different grades of fibers for different applications. Higher modulus carbon fibers are typically more expensive manufacturers of carbon fibers

  13. Carbon fibre business The market has experiencd a good growth in recent years and there is veryoptimistic growth expectation in coming years. The average growth rate for the last 23 years was about 12%. For the last four years, carbon fiber world market is soaring. There is a huge demand for aerospace and windmill industry. Market analysts have predicted that world market for carbon fiber will reach $12 billion by 2011.

  14. The effect of carbon fibre Thermosetting and reinforced with carbon fibres of high strength and elastic modulus, and their friction and wear properties examined. During dry sliding against steel, randomly oriented chopped fibres reduce both the coefficients of friction and the wear rates of polymers to levels which are approximately independent of the matrix material. Fibre orientation is also important, and minimum wear is obtained when the fibres are normal to the sliding surface. Carbon fibre reinforced polymers are less abrasive than those containing glass, exhibit lower friction and have greater moduli of elasticity; the flexural strengths are also often greater, and particularly so with polytetrafluoroethylene (PTFE). It is concluded that the carbon fibres reduce the friction and wear of polymers by preferentially supporting part of the applied load, and in addition by smoothing the surface of the steel counterface. thermoplastic polymers have been

  15. Conclusion A carbon fiber reinforced composite coil spring is provided which is made from a braid formed of carbon fibers oriented at a preferred angle to the braid axis of approximately plus or minus 45 a resin which serves as a substantially continuous reinforcing fiber may be incorporated into the braid to prevent it from straightening under longitudinal tension. The carbon fiber reinforced composite coil spring is formed by wrapping the braid, impregnated with a non-solidified resin, within a groove which extends helically along the surface of a helical mandrel and solidifying the resinous matrix material, and then removing the solid composite coil spring from the helical mandrel. matrix phase. Longitudinal

  16. ©right

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