Wet-laid nonwovens made of high-performance fibers and their potential for use in composites

摘要

Increasing amounts of wastes of partly extreme expensive reinforcing fiber materials direct the attention of the plastics industry to the reutilization of high-grade reclaimed fibers. Recycling technologies developed at TITK provide an opportunity to produce reinforc-rning fibers with sufficient fiber length, high mechanical parameters and low dust content. These fibers enable the use of textile utilization strategies with applications in the fields of fiber reinforced composites. Here the technology of wet-laid nonwovens provides a suitable and safe production of semi-finished products. The nonwovens can be applied, for instance, in the LFT D process. With this a proper fiber metering and direct production of the construction components becomes possible. Initial trials with reclaimed glass fibers showed that in some cases the resulting properties of the composites are comparable to that ones of standard materials with virgin fibers. The implemented investigations demonstrate not only opportunities of a reutilization of high-performance fibers, but provide useful workable technol-ogies based on textile machinery.%Zunehmende Abfallmengen teilweise extrem hochpreisiger Verstärkungsfasermaterialien rücken den Gedanken einer Wiedergewinnung qualitativ hochwertiger Recyclingfasern in den Blickpunkt der Verarbeiter. Die im TITK entwickelten Recyclingtechnologien ermöglichen die Gewinnung von Ver-stärkungsfasem mit ausreichenden Faserlängen, hohen mechanischen Eigenschaften und geringen Staubanteilen. Diese Fasern ermöglichen die Anwendung textiler Verwertungsstrategien mit Einsatzmöglichkeiten im Bereich der Faserverbunde.