Surface Treatment and Oxidation The newly carbonized fibre has a smooth, inert surface that does not bond well with resin matrices used in composite parts. Automated systems use sophisticated sensors and imaging to detect defects such as voids, misaligned fibres, or surface irregularities.
Solvent Spinning Carbon Fiber Filaments: Creating the Precursor Strands
Carbonization in an Oxygen-Free Environment With stabilization complete, the spools move to a carbonization oven, the heart of the transformation. Here, the temperature is ramped up to between 1,500°C and 2,000°C in a meticulously controlled inert atmosphere, typically involving nitrogen or argon.
This creates a key for the resin to grip, ensuring the final composite component is strong and durable. This stage is where the material gains its defining high-strength properties.
Solvent Spinning Carbon Fiber Filaments: The Process of Drawing and Solidifying Strands
Heat causes the fibres to oxidize, creating cross-links that prevent the strands from melting when exposed to extreme heat later. Alternatively, routes using coal or petroleum pitch exist, but PAN remains the dominant standard due to its uniformity and resulting mechanical properties.
More About Making of carbon fibre
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