A petroleum-refining residue has been selected for the production of petroleum pitch with low content in carcinogenic polyaromatic hydrocarbons, sulphur and ashes, in comparison with traditional coal tar pitches.
An adequate route has been identified for the production of such a pitch with characteristics that are suitable for carbon fibre elaboration. The main properties consist of low mesophase content (less than 5% w/w) and high softening point (greater than 230º C).
Further processing developed by the University of Alicante consists of spinning, stabilisation and carbonisation. Beginning with the petroleum pitch produced by Repsol, and following the process developed by the University of Alicante, carbon fibres and activated carbon fibres can be elaborated with the same characteristics than commercial products.
Carbon fibre is a high modulus material that shows high stability and excellent electrical and thermal conductivity. These characteristics made this product suitable for portable power, automotive and construction industries.
Activated carbon fibre is a high modulus material that shows high stability and high adsorption capacity. These characteristics made this product suitable for pollution control devices, gas-adsorption masks and clothing, and gas storage.