Effective production of composite material semi-finished products and composite parts in a wet process under the use of hydroxy-functionalized (meth) acrylates crosslinking thermosettically by isocyanate or uretdione

摘要

The present invention relates to a composite material semifinished product and a method of manufacturing a composite material member. (Meth) acrylate monomers, (meth) acrylate polymers, polyfunctionalized (meth) acrylates, hydroxy functionalized (meth) acrylate monomers and / or hydroxy functionalized (meth) acrylate monomers, for the preparation of semi-The acrylate polymer is mixed with a diisocyanate or polyisocyanate or uretdione material. This liquid mixture is applied on a fiber material, for example carbon fiber, glass fiber or polymer fiber, in a known manner and is polymerized by a first temperature increase, redox accelerator or photoinitiation. For example, polymerization at room temperature or up to 120 C. produces a thermoplastic resin which can be further deformed later. The hydroxy-functionalized (meth) acrylate component can subsequently be crosslinked in the compressor with an isocyanate or uretdione already present in the system at a second temperature at least 20 C. above the polymerization temperature. In this case, shaping is simultaneously carried out in this compressor into the final member. In this way, shape-stable thermosetting resins or crosslinked composite parts can be produced.