Pultruded carbon fibre profiles made from HT carbon fibres (Torayca T300 or equivalent) that are drawn continuously through a die. This production method causes the fibres to be oriented unidirectionally, i.e. along the length of the pultruded form. The result is a high fibre volume fraction of 58 % with a very low air voids content.
Please note: Internal release agents are used in the pultrusion process, which migrate to the part's surface. A pre-treatment of the adherent due to this is nescessary. These have to be roughened (abrasive paper 220 grit) and cleaned very thoroughly. Epoxy resin or cyanacrylate (superglue) is used for the bonding itself.