| abstract |
The invention relates to fibre composites with excellent dimensional stability, weather resistance and flameproofing properties. Said composites have a semi-interpenetrating network structure which consists of between 60 and 95 wt.- % fibrous material and/or wood particles and between 5 and 40 wt.- % hydrophobed melamine resin. The composites are produced by a method, in which fibrous materials and/or wood particles with a residual water content of between 0.5 and 5 wt.- % are subjected to the sorption of a non-aqueous ammoniac dispersion or solution of a hydrophobed melamine resin precondensate, the plastic reaction mixture is discharged, after degasification of the volatile components, as a strand or raw film and the granulate is then subjected to an extrusion process or an injection moulding process to obtain moulded materials, at processing temperatures of up to 200 °C, or the raw film is subjected to post-processing by compression moulding or calendering, at processing temperatures of up to 180 °C, the fibre composite being cured during said process. The fibre composites are suitable for use as high-performance wood products and moulded wood semi-finished products in the form of panels, sections, hollow sections and tubes with a low-water absorption and excellent dimensional stability, weather-resistance and flameproofing properties, in particular in the furniture industry, in automotive construction and for construction applications such as façade elements. |