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A process for preparing a composite of long carbon fibers and a thermoplastic material
A process for preparing a composite of long carbon fibers and a thermoplastic material
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机译:一种制备长碳纤维和热塑性材料的复合材料的方法
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摘要
1. Process using a fluidized bed of thermoplastic material particles in order to prepare carbon fibers rows impregnated with said thermoplastic material, precursor of composite materials ; said impregnated rows having a thickness less than 5 mm, composed of 20 to 65% in volume of oriented carbon fibers and of said thermoplastic material filling the whole space between the fibers ; wherein : - after introduction in said fluidized bed of thermoplastic material particles, said carbon fibers, stretched between two electrical contacts, are heated by Joule effect, for a duration of about 0.5 to 60 secs at a temperature at least equal to the adhering temperature of the thermoplastic material ; - then said carbon fibers coated with the thermoplastic material are brought out of said fluidized bed and subjected to a second heating by Joule effect for a duration of about 0.10 to 60 secs at about the same temperature as the melting temperature of the thermoplastic material.
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