DoITPoMS

Micrograph 594 and full record

Link to image file for micrograph 594
Micrograph no
594
Brief description
Carbon string
Keywords
carbon, carbon fibres Link to MATTER Glossary entry for carbon fibres, composite material Link to MATTER Glossary entry for composite material, fibre Link to MATTER Glossary entry for fibre, polymer Link to MATTER Glossary entry for polymer
Categories
Polymer
System
C
Composition
Not specified
Standard codes
Reaction
Carbon fibres are produced by oxidising polyacrylonitrile in air at 230 deg C whilst applying tension, and then carbonising the product in nitrogen at 1000 deg C
Processing
Carbon string is woven from the fibres that result from the drawing of carbonised PAN
Applications
Carbon fibre composites are used as a structural material in the aerospace and automotive industries, as well as in certain high-performance sporting equipment. They present exceptional stiffness and can be structurally optimised for particular load-bearing applications.
Sample preparation
Technique
Scanning electron microscopy (SEM)
Length bar
400 μm
Further information
Carbon string is used as a conducting bridge in the preparation of specimens for observation in the scanning electron microscope (SEM). It is also representative of the preforms used in the manufacture of some carbon fibre based composite components. Fibres can be woven into appropriate shapes using traditional weaving technology. The preforms can then be injected with the resin matrix by processes such as resin transfer moulding (RTM) or resin film infusion (RFI).
Contributor
J A Curran
Organisation
Department of Materials Science and Metallurgy, University of Cambridge
Date
03/10/02
Licence for re-use
Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales

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