Patent ID: 6743832
Filing Date: 2004-06-01
Classification: C08K,Y10T

Abstract:
A thermosetting resin SMC article comprising a thermosetting resin composition containing a radically curable resin mixture as matrix, in which 2D-randomly distributed, discontinuous carbon fibres and other additives are present, wherein the radically curable resin mixture consists of:(a) 50-100 parts by weight of a radically curable resin that also contains a free monomer capable of copolymerising with it (b) 0-50 parts by weight of a shrink-resistant compound that may also contain an amount of copolymerisable free monomer, the total of (a) and (b) adding up to 100, and in that the discontinuously distributed carbon fibres are obtained by chopping split, continuous carbon fibre bundles, which carbon fibre bundles are provided with a sizing that is at least partially chemically bonded thereto and with a binder whose solubility at room temperature in the copolymerisable free monomer present in the radically curable resin mixture amounts to at least 10% by weight, and in that the weight percentage of carbon fibres relative to the resin composition is between 5 and 65% by weight, wherein the sizing and binder may be the same component or different ones, and in that optionally also a filler is present in the resin composition.