IMPROVED STITCH-BONDED AND LENO-WOVEN MULTIPLIESFOR COMPOSITES

摘要

The potential of stitch-bonded multiaxial multi-plies for use as reinforcements in composites hasrnbeen proven in applications as diverse as carbon fiber reinforced plastics and textile reinforcedrnconcrete. With the newly developed extended stitch-bonding process, restrictions have beenrnovercome, which until now have limited the free arrangement of the individual layers in thernmulti-ply. In glass fiber – polypropylene (GF/PP) composites, the comparison betweenrnconventional and improved stitch-bonded multi-plies shows increased tensile strength and anrnimproved Young’s modulus. The benefits of the improved stitch-bonding process are furtherrnunderlined by improved productivity and reduced fiber damage. A second new technology,rnwhich supplements the extended stitch-bonding process, is the improved leno weaving process. Itrnis now possible to produce woven fabrics which are very similar to biaxial stitch-bonded multiplies.rnTo assess the potential of such fabrics, this paper provides a comparison of GF/PPrncomposites based on stitch-bonded and leno woven multi-plies.