EFFICIENT PRODUCTION OF COMPOSITE SEMIFINISHED PRODUCTS AND COMPONENTS IN A WET PRESSING METHOD USING HYDROXY FUNCTIONALIZED (METH)ACRYLATES WHICH ARE DUROPLASTICALLY CROSSLINKED USING ISOCYANATES OR URETDIONES

摘要

The invention relates to a method for producing composite semi finished products and components. In order to produce the semifinished products or components (meth)acrylate monomers (meth)acrylate polymers multi functionalized (meth)acrylates hydroxy functionalized (meth)acrylate monomers and/or hydroxy functionalized (meth)acrylate polymers are mixed with di or poly isocyanates or uretdione materials. The liquid mixture is applied onto fiber materials such as carbon fibers glass fibers or polymer fibers for example using known methods and polymerized using a first temperature increase a redox accelerator or a photo initiation. After the polymerization process for example at room temperature or a temperature of up to 120 °C thermoplastics are produced which can then still be deformed. The hydroxy functionalized (meth)acrylate components can then be crosslinked with the isocyanates or uretdiones which are already present in the system in a press at a second temperature which is at least 20 °C higher than the polymerization temperature. At the same time the final component is shaped in said press. In this manner dimensionally stable duroplastics or crosslinked composite components can be produced.